Journal of the American Chemical Society
DOI: 10.1021/jacs.6c02377
benxue liu
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02 Jun 03:24
[ASAP] High-Entropy Alloy Aerogels with High-Density Solid–Solid Heterointerfaces for Alkaline Hydrogen Evolution
by Lingwei Wang, Shiyu Zhen, Varatharaja Nallathambi, Cui Wang, Xiaoyue Shi, Ning Lu, René Hübner, Alexander Eychmüller, Sven Reichenberger, Baptiste Gault, Liang Zhang, and Bin Cai
benxue liu蔡斌的高熵气凝胶合成方法
02 Jun 03:23
[ASAP] Anisotropic Amorphization of Black Titania
by Yikun Kang, Zhi-Pan Liu, and Ye-Fei Li
benxue liu机器学习检索非晶结构和分子动力学模拟
Journal of the American Chemical Society
DOI: 10.1021/jacs.6c05023
02 Jun 03:21
[ASAP] Emissive Colloidal GaAs Quantum Dots
by Jun Hyuk Chang, Danial Zangeneh, Heng-Chi Chu, Justin C. Ondry, Kailai Lin, Yuan Liu, Zirui Zhou, Ahhyun Jeong, James Cassidy, Sungsu Kang, Scott A. Crooker, Alexander S. Filatov, A. Paul Alivisatos, Eran Rabani, Robert F. Klie, Richard D. Schaller, Alexander L. Efros, and Dmitri V. Talapin
benxue liu胶体纳米晶的化学合成
Journal of the American Chemical Society
DOI: 10.1021/jacs.6c03474
02 Jun 01:41
A Eutectic‐interface Engineered Al2TiO5 Nanofibrous Aerogel for Superinsulation Under Extreme Conditions
by Mingyu Liu,
Yanyan Ma,
Yongshi Guo,
Xianlei Shen,
Xiao Wang,
Juejing Dai,
Kang Li,
Qianqian Guo,
Chenhao Ding,
Xinyu Li,
Hayelom Belay,
Cunlei Sun,
Jianhua Yan
benxue liu东华严建华在五邑大学
This study reports a scalable roll-to-roll electrospinning method for creating an elastic Al2TiO5 nanofibrous aerogel. It shows ultralow thermal conductivity from 25°C to 1000°C, resists direct flame at 1300°C without structural failure, and recovers elastically up to 90% after repeated compression. These properties stem from eutectic interfaces that scatter phonons for insulation while ensuring intrinsic thermal stability.
ABSTRACT
Ceramic aerogels that are both thermal super-insulators and mechanically robust under extreme temperatures are urgently needed yet elusive, due to the inherent trade-off between thermal resistance and thermomechanical stability. Here, we solve the problem by reporting a 3D, elastic aluminum titanate (Al2TiO5) nanofibrous aerogel crafted via a eutectic-interface engineering strategy. This approach employs a fully aqueous, scalable roll-to-roll electrospinning process, enabling the low-temperature synthesis of a co-continuous Al2O3–TiO2 eutectic architecture—a structure previously attainable only in dense ceramics through ultra-high-temperature melt growth. The resulting aerogel (density: 25 mg·cm− 3) achieves an ultralow thermal conductivity of 0.033 and 0.103 W·m− 1·K− 1 at 25 and 1000°C, respectively. Moreover, the aerogel can resist direct flame at 1300°C without structural failure, and recovers elastically up to 90% after repeated compression at 50% strain. This superior performance arises from its eutectic interfaces, which act as efficient phonon scatterers for thermal insulation while also providing intrinsic thermal stability. This work not only demonstrates a viable, sustainable path for mass-producing elastic ceramic aerogels but also establishes a new material design paradigm, transforming brittle eutectic oxides into lightweight, elastic thermal super-insulators for aerospace and energy applications.
02 Jun 01:13
Lightweight, Strong, and Resilient 3D Graphene Metamaterial via a Multi‐flow Assembly
by Gangfeng Cai,
Ziqiu Wang,
Wenhao Tong,
Huasong Qin,
Peng Li,
Yicong Qin,
Kaiwen Li,
Zihao Deng,
Songhan Shi,
Haodong Yang,
Yilun Liu,
Zhen Xu,
Yingjun Liu,
Chao Gao
benxue liu浙江大学高超纳米组装多孔复合材料
A multi-flow assembly strategy enables the fabrication of programmable graphene metamaterials with diverse architectures. Inspired by cuttlebone, the resulting low-density lamella-wall metamaterial exhibits robust mechanical performance, including high compressive strength, progressive layer-by-layer compression, and excellent elasticity, enabling applications in high-range pressure sensing.
ABSTRACT
Materials aim to integrate excellent properties, including high strength, stiffness, significant elastic deformation, specifically at low density. However, synthetic materials usually involve trade-offs among these characteristics, resulting in distinct categories, such as hard and soft carbon materials, despite sharing identical elemental composition. Here, we demonstrate a lightweight graphene metamaterial fabricated via multi-flow assembly that integrates the mechanical robustness of low-density hard carbons with the elastic deformability of soft carbons. The representative graphene metamaterial features a cuttlebone-inspired lamella-wall architecture. This architecture reasonably strengthens and stiffens the graphene metamaterial, akin to the house-of-cards carbon layer arrangement in hard carbons. The intrinsic superelasticity under huge deformation (90%) is also retained in these graphene metamaterials. Our multi-flow assembly method is facile to prepare varied metamaterials by directly manipulating the arranged texture of individual graphene sheets, paving the way for exploring the unique properties of metamaterials in the macroscopic world and their applications.
02 Jun 01:02
AI‐Driven Decoding of Material Dynamics: From Machine Learning Potentials and Interpretability to Generative Prediction
by Long Zhao,
Hongxiang Zong
benxue liu比较重要，机器学习势，综述
Artificial intelligence (AI) is transforming the modeling of material dynamics across scales. This Review highlights recent advances in AI-driven machine learning potentials, interpretability, and generative prediction for decoding dynamic processes of phase transitions in transforming materials and plastic deformation in metallic structural materials, outlining future opportunities and challenges for developing AI-powered frameworks to probe atomic-level dynamics and accelerate materials design.
Abstract
Understanding and predicting the dynamic processes that underpin material performance are crucial for designing next-generation materials capable of meeting the evolving demands of modern technologies. These processes—often occurring at atomic or molecular scales in condensed phases—remain notoriously difficult to probe experimentally. Artificial intelligence (AI) now offers a transformative framework that enables unprecedented realism in modeling, interpreting, and even generating multiscale dynamics under various external conditions. In this Review, we highlight recent advances in AI-based machine learning potentials, AI-guided interpretability, and generative AI for dynamic prediction, and demonstrate their applications to key challenges in materials science, including phase transitions in transforming materials and plastic deformation in metallic structural materials. Finally, we discuss the remaining challenges and outline future opportunities, aiming to inspire the development of AI-powered frameworks that can probe atomic-level dynamics and accelerate materials design.
01 Jun 23:57
High‐Entropy Lead‐Free Relaxor Ferroelectric Ceramic with Wide‐Temperature‐Range Self‐Powered X‐Ray Detection
by Yufei Song,
Jiangtao Fan,
Feifei Guo,
LingXiang Wang,
Yifan Hu,
Zheng Cheng,
Zeliang Gao,
Zhanggui Hu
benxue liu高熵铁电陶瓷用于X射线探测-高泽亮胡章贵
The lead-free high-entropy ferroelectric ceramic BNBT-CHTT is first reported for self-powered x-ray detection. The BNBT-CHTT ceramic achieves an impressive combination of high sensitivity (1117.44–1223.55 µC Gyair −1 cm−2) and ultralow detection limits (∼38.7 nGyair s−1). It exhibits unprecedented operational stability across a wide temperature range (25°C–185°C) in both biased and self-powered modes.
ABSTRACT
Sensitive and stable x‑ray detectors are essential for low‑dose medical diagnostics. Achieving wide‑temperature operation in materials remains a key challenge for enabling thermally stable, self-powered x‑ray detection. Herein, a high-entropy lead-free relaxor ferroelectric ceramic, 0.85Bi0.47Na0.47Ba0.06TiO3-0.15Ca0.7Ho0.2Ti0.75Ta0.2O3 (BNBT-CHTT), is fabricated first. The unique entropy-stabilized polar nanoregions (PNRs) endow the system with high resistivity and robust spontaneous polarization, underpinning exceptional self-powered performance across a broad thermal window. Under 70 keV x-ray irradiation, the detector exhibits excellent stability from 25°C to 185°C, delivering record-high specific sensitivities of 1117.44–1223.55 µC Gyair −1 cm−2, self-powered sensitivities of 597.28–699.78 µC Gyair −1 cm−2, and low detection limits of 38.7–160.6 nGya i r s−1. Notably, distortion-free x-ray imaging is demonstrated at 185°C under zero bias, validating the material's practical utility. This work highlights the potential of high-entropy relaxor ferroelectrics to overcome key limitations of existing detectors and provides a robust platform for next-generation, low-power, wide-temperature-range x-ray detection and imaging technologies.
01 Jun 23:52
Bioinspired Ultrastretchable Aramid Triboelectric Aerogels for Intelligent Vehicle Seat
by Mingchao Chi,
Zixi Lin,
Song Zhang,
Tao Liu,
Yanhua Liu,
Chenchen Cai,
Bin Luo,
Jinlong Wang,
Kang Yu,
Qiguan Luo,
Shuangfei Wang,
Shuangxi Nie
benxue liu聂双喜的摩擦电气凝胶
This work has developed an ultrastretchable aramid triboelectric aerogel by programmed ice crystal growth. The orientation fitting degree of the triboelectric aerogel reaches 98%, which is 2.6 times higher than that of conventional freeze-casting methods. This ordered structure disperses tensile stresses during stretching, enabling the triboelectric aerogel to sustain an unprecedented 539% strain.
ABSTRACT
Aerogels have demonstrated considerable potential in the field of flexible sensors owing to the tunability of porous architectures. The brittleness and low stretchability induced by high porosity remain key limitations restricting aerogel applications. Inspired by the orientation of muscle fibers, an ultrastretchable aramid triboelectric aerogel is developed by programmed ice crystal growth. The orientation fitting degree of the triboelectric aerogel reaches 98%, which is 2.6 times higher than that of conventional freeze-casting methods. This ordered structure disperses tensile stresses during stretching, enabling the triboelectric aerogel to sustain an unprecedented 539% strain. Leveraging this aerogel, the triboelectric sensing array with vibration feedback was designed. Combined with deep learning algorithms, it achieved real-time monitoring and vibration feedback alerts of driving behaviors within a single sensor interface for the first time. This study offers a promising strategy for intelligent driving systems to identify and mitigate unsafe driving behaviors.
01 Jun 23:45
Covalently Fused Nanofiber Aerogels With Exceptional Mechanical Robustness and Thermal Insulation for Deployable Space Systems
by Junjie Zheng,
Junyan Zhang,
Zhen Wang,
He Jia,
Tianxiang Bai,
Mengyue Gao,
Chengjian Xu,
Xinhai Zhang,
Meifang Zhu,
Yanhua Cheng
benxue liu纤维和有机硅气凝胶的复合体系，东华大学程艳华
Deployable aerospace applications impose rigorous mechanical and thermal demands on lightweight materials. Based on this, we engineered covalently fused nanofiber aerogels exhibiting super-tough multiaxial shape recovery and superior thermal insulation. Envisioned for drag-augmentation deorbiting spheres and flexible habitation capsules, this resilient aerogel provides a highly versatile material foundation for deep-space exploration.
ABSTRACT
Nanofibrous aerogels exhibit an ultralow bulk density, making them highly desirable for lightweight aerospace structures. Nevertheless, these materials are often hampered by inherent physical brittleness, leading to severe structural failure under complex mechanical loads. To address this challenge, we developed a hybrid aerogel featuring core-shell inter-fiber junctions covalently fused via siloxane bonds, fabricated by in-situ vapor-phase polymerization of poly(vinylsilsesquioxane) (PVSQ) on a continuous and crosslinked native bacterial cellulose (BC) network. This unique architecture endows the aerogel (BC-PVSQ) with outstanding mechanical adaptability and toughness, including >99% compressibility, bending resilience (curvature > 20 mm−1), robust tensile strength, and structural integrity over 10,000 shearing cycles. Significantly, it maintains low density (16.1 mg cm−3) and thermal conductivity (27.0 ± 0.2 mW m−1 K−1). As a proof of concept, we demonstrate the practical potential of the material for space-deployable drag-augmentation deorbiting spheres, enabling reversible folding compaction and reliable deployment, and for flexible habitat insulation, where it shows superior thermal insulation performance relative to conventional aerospace insulation materials under simulated Martian atmospheric conditions. This work successfully resolves the longstanding trade-off between mechanical robustness and thermal insulation, laying a multifunctional technological foundation for next-generation lightweight deployable systems designed for space environments.
19 May 03:05
Ceramic Papermaking: A Facile Route to Fire‐Strengthening, Multifunctional Ultralight SiC Fiber Mat
by Xiaotong Chen,
Wenqing Wang,
Jingyi Chen,
Xiong Gao,
Junzhe Xin,
Chang Liu,
Rujie He,
Ying Li
benxue liu北理工李营陶瓷纤维纸
Inspired by ancient paper-making technology, an ultralight SiC fiber mat is assembled from fibers using an aqueous CTAB-stabilized slurry. The as-obtained ceramic “paper” maintains structural integrity under 1600°C treatment. Fire-strengthened welded junctions deliver enhanced compressive strength, ultralow thermal conductivity, and remarkable flexibility. The mat also integrates real-time temperature measurement capability.
ABSTRACT
High-temperature thermal insulation properties of ultralight SiC materials make them highly promising for extreme environment applications. In this study, inspired by ancient paper-making, we demonstrate the room-temperature assembly of pre-formed SiC fibers into an ultralight ceramic “paper” using an aqueous CTAB-stabilized slurry. Under the baptism of 1600°C the “paper” does not burn and strengthens itself. Aerodynamic heat triggers surface oxidation, welding fiber crossings into stable junctions and boosting compressive strength from 49 to 206 kPa, while the skeleton retains its shape with only 1.23% mass loss. The resultant ultralight SiC fiber mat (SFM) carries an ultralow thermal conductivity of 42 mW m−1 K−1 and a density of 0.13 g cm−3, yet survives 80% compression, 135° bending and 45° twisting without fracture. Repeated flame impingement, cyclic airflow scouring and ten-cycle ablation leave the back-face temperature below 400°C, evidencing reliable reusability. Because the “ceramic papermaking” route relies solely on gravity sedimentation and pH-triggered structural assembly, meter-scale or intricately patterned parts can be molded in hours, then dried at 80°C, avoiding complex sol-gel chemistry or high-temperature carbothermal synthesis. The same Seebeck-principle network further endows SFM with real-time temperature measurement (±10°C accuracy), integrating insulation and damage tolerance in one fire-strengthened sheet.
benxue liu likes this
10 May 09:14
Strain‐Tunable Thermal Conductivity in Largely Amorphous Polyolefin Fibers via Alignment‐Induced Vibrational Delocalization
by Duo Xu,
Buxuan Li,
You Lyu,
Vivian J. Santamaria‐Garcia,
Yuan Zhu,
Svetlana V. Boriskina
benxue liu应变引起热导率变化，传播子的非局域化效应
A fast, reversible, and recyclable thermal switch is realized using largely amorphous polyolefin fibers. Mechanical strain induces polymer chain alignment, which triggers vibrational delocalization, experimentally quantified via Raman spectroscopy, to open new heat transport channels. This mechanism enables continuous thermal conductivity tuning with high switching ratios and sub-second response times across a broad temperature range.
ABSTRACT
Developing fast, reversible, and recyclable thermal switches is essential to advance adaptive thermal management. Here, we present a strain-tunable thermal switch based on largely amorphous olefin block copolymer (OBC) fibers, achieving a continuous switching ratio above 2 over 1000 cycles, as well as very short response times below 0.22 s. Using Raman spectroscopy, we quantify vibrational delocalization with increasing strain and demonstrate its direct connection to the observed thermal conductivity changes. We show that unlike prior assumptions linking propagating heat carriers primarily to crystalline domains, alignment in amorphous systems can enable phonon-like modes that dominate transport. To our best knowledge, this work is the first to experimentally probe vibrational delocalization using Raman spectroscopy and to demonstrate that alignment alone can govern the dominant carrier in disordered polymers. These findings establish design strategies for fatigue-resistant, high-performance, and recyclable polymer thermal switches for advanced thermal energy transport applications.
benxue liu likes this
10 May 09:08
Reactive Laser Additive Manufacturing of Hierarchically Structured Aerogels
by Shuichiro Hayashi,
Ankit Das,
Marco Rupp,
Elizabeth Stump,
Joshua Miller,
Michele L. Sarazen,
Craig B. Arnold
benxue liu普林斯顿增材制造碳气凝胶
Reactive laser additive manufacturing transforms printing into a chemically active synthesis step. Salt-enabled transient reaction environments drive in situ formation of hierarchically structured graphitic aerogels with microtubular and nanoscale features in seconds. This internally programmed reactivity yields over tenfold capacitance enhancement, establishing a scalable solvent-free pathway for reaction-driven materials-by-design.
ABSTRACT
As demands for sustainable and scalable energy materials manufacturing accelerate, additive manufacturing (AM) remains largely limited to passive shaping of predefined precursors. Here, we introduce reactive laser AM, in which precursor composition is designed to transform the printing step itself into a chemically active stage of materials synthesis. Incorporating eutectic alkali halide salts into protein-based powders converts localized laser heating into transient reaction environments that drive vapor-phase chemistry, surface etching, and in situ hierarchical growth without external reagents or solvents. This internally activated reactivity enables the rapid formation of graphitic aerogel monoliths with multilevel architecture—macroporous frameworks decorated with microtubular arrays and nanoscale features—within seconds in a single process. As energy storage electrodes, these hierarchically structured aerogels exhibit a tenfold enhancement in gravimetric capacitance (∼162 F g−1) relative to salt-free counterparts. By engineering reactivity through feedstock design, this work reframes laser AM as a dynamic platform for reaction-driven materials-by-design.
10 May 09:05
Toward Human Thermal Comfort: An Adaptive Solar‐Radiative Thermoregulator
by Yang Li,
Zhuoyuan Zhang,
Sai Liu,
Meng Li,
Chi‐Yan Tso,
Deqing Mei,
Keqiao Li,
Baoling Huang
benxue liu香港科技大学黄宝龄自适应热舒适结构
A thermal-comfort-oriented design paradigm for smart thermoregulators is proposed based on predicted mean vote. By integrating responsiveness to temperature, humidity, and solar irradiance, the developed multi-stimuli-responsive device achieves stepless thermal regulation. It offers a significant regulation potential from 850 W m−2 (heating) to −114 W m−2 (cooling), ensuring year-round indoor comfort and substantial energy savings across diverse climates.
ABSTRACT
While adaptive thermoregulators are promising green solutions for buildings, current designs often focus solely on air temperature, neglecting the multifaceted nature of human thermal sensation. Here, we proposed a thermal-comfort-oriented design paradigm that integrates responsiveness to multiple environmental stimuli, including temperature, humidity, and solar irradiance. We demonstrated a proof-of-concept thermoregulator capable of perceiving environmental changes and adjusting its configuration accordingly, offering a stepless thermal regulation potential within a range of 824 W m−2 (heating) to −114 W m−2 (cooling). Field tests affirmed that model houses with this intelligent thermoregulator could maintain thermal comfort for up to 6 h with zero energy consumption during the daytime. The device also exhibited exceptional mechanical strength, adhesion properties, and resistance to adverse weather conditions, ensuring its service reliability. Simulations indicate the device can reduce energy consumption by 15%–50% compared to standard roofs while maintaining indoor thermal comfort across different climates worldwide, highlighting the great potential of multi-stimuli-responsive thermoregulators for building thermal management.
10 May 09:03
[ASAP] Fast Single-Nucleus Growth of Subcentimeter Monolayer MoS2 Single Crystals via an All-in-One Precursor
by Shengxue Zhou, Jianwei Cai, Yaming Zhou, Weijia Mu, Xiaotong Feng, Shaoxuan Luo, Xiaofan Ping, Lina Liu, Dake Hu, Jing Li, Muhammad Asif, Yue Liu, Xinsheng Wang, Wen Zhao, Wenqing Yao, Liming Xie, Feng Ding, and Liying Jiao
benxue liu二合一前驱体用于合成MoS2
Journal of the American Chemical Society
DOI: 10.1021/jacs.6c02743
05 May 13:35
Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT
by David McArthur,
George Maddison,
Jaianth Vijayakumar,
Paul Tafforeau,
Kathy Christofidou,
Peter David Lee,
PJ Tan,
Chu Lun Alex Leung
benxue liu利用CT图像生成的结构进行FEM模拟
Triply-twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High-resolution synchrotron XCT and image-based simulations reveal how meta-grain architecture, defects, and AM build orientation govern failure pathways. This study demonstrates a design strategy for lightweight metamaterials with enhanced performance and reliability.
ABSTRACT
We designed and engineered a novel class of triply-twinned Body-Centred Cubic (BCCT) lattices that achieved up to three-fold improvements in mechanical performance over conventional BCC lattice architecture. Inefficient strut deformation and defect-sensitive failure limit the performance and reliability of architected metamaterials. Triply-twinned meta-crystal architectures transform the dominant strut-scale deformation from bending to stretching in both polymeric (Rigid 4K) and metallic (Ti-6Al-4V) Additively Manufactured (AM) BCCT lattices, significantly enhancing their stiffness (+380%) and strength (+279%). Using high-resolution synchrotron X-ray computed tomography, image-based finite element models, scanning electron microscopy, and pyrometry, we correlate fracture mechanisms to the architecture design and as-built defects in these AM lattices. We further reduce defect-driven fracture by 50% without altering the global failure mode by adjusting the build orientation of the lattices. This integrated, multi-scale approach links fundamental deformation mechanics to manufacturability, providing a broadly applicable design strategy for next-generation architected metamaterials with exceptional performance and reliability.
benxue liu likes this
05 May 13:27
The Coupling of Ferroelectric Polarization and Oxygen Vacancy Migration Enables Electrically Controlled Thermal Memories
by Dídac Barneo,
Miquel Royo,
Rafael Ramos,
Jesús Carrete,
Hugo Romero‐Bernad,
Ricardo Jiménez,
Víctor Leborán,
César Magén,
Noa Varela‐Domínguez,
Miguel Algueró,
Riccardo Rurali,
José A. Pardo,
Francisco Rivadulla,
Eric Langenberg
benxue liu锆铪质材料
Ferroelectric Hf0.5Zr0.5O2 epitaxial thin films exhibit a non-volatile, electrically controlled thermal conductivity enabled by the coupling between oxygen vacancy migration, acting as phonon scatterers, and ferroelectric polarization, acting as ion migration valve. The resulting hysteretic thermal response allows reversible access to distinct thermal states, establishing hafnia-based ferroelectrics as a promising platform for solid-state thermal memories and advanced thermal management technologies.
ABSTRACT
Here we investigate epitaxial Hf0.5Zr0.5O2 ferroelectric thin films as potential candidates to be used as non-volatile electric-field-modulated thermal memories. The electric-field dependence of the thermal conductivity of metal/Hf0.5Zr0.5O2/Y2O3:ZrO2 devices is found to be hysteretic—resembling a polarization vs. electric field hysteresis loop—, reaching a maximum (minimum) at large applied positive (negative) electric fields from the top metallic electrode. This dynamic thermal response is compatible with the effects of the coupling between the ferroelectric polarization and oxygen ion migration in the Hf0.5Zr0.5O2 layer, in which the oxygen vacancies are the main phonon scattering centers and the polarization acts as an electrically active ion migration barrier that creates the hysteresis. This new mechanism enables two non-volatile states: high (ON) and low (OFF) thermal conductivity states when the electric field is removed, with an ON/OFF ratio of 1.6, which can be switched with applied voltages lower than -5 and +5 V, respectively. Both the ON and OFF states exhibit high stability over time, though the switching speed is limited by ion mobility in the Y2O3:ZrO2 electrode.
benxue liu likes this
05 May 12:39
Transpiration‐Inspired Radiative Cooling Metafabric for Efficient Personal Thermal and Moisture Management
by Peibo Du,
Jinping Zhang,
Haoye Tian,
Kefan Zhang,
Xiaoyan Li,
Jie Wang,
Li Lv,
Chengcheng Li,
Weiguang Liu,
Fengyan Ge,
Zaisheng Cai
benxue liu梯度孔辐射制冷织物
This work presents a bioinspired transpiration-inspired metafabric with a gradient porous structure, designed to enhance personal thermal and moisture management. The metafabric integrates superior radiative cooling, thermal conductivity, and moisture-wicking properties, achieving a 20.2°C temperature reduction in sweaty conditions. It offers a sustainable, energy-efficient solution for cooling textiles, promising substantial comfort and environmental benefits.
ABSTRACT
Advanced radiative cooling textiles represent a promising avenue for improving human thermal comfort in the face of global warming. However, their limited sweat evaporation capacity and low thermal conductivity significantly reduce the cooling efficiency, particularly in hot outdoor climates. Herein, a novel transpiration-inspired metafabric that integrates precise solar spectrum regulation, a high heat conduction pathway, and splendid moisture-wicking capacity was presented through multi-scale electrospun structural design. The gradient micro-nano porous metafabric can broadly scatter the solar spectrum while establishing a gradual refractive index transition to enhance mid-infrared absorption. The solar reflectivity and infrared emissivity of the metafabric reached 99.7% and 93.3%, respectively, inducing a cooling effect of 10.2°C and net cooling power (Pnet) of 110.1 W/m2. Meanwhile, the metafabric with a gradual wettability gradient and capillary force gradient exhibited a high one-way transport index (R) of 1330.7% and a reverse breakthrough pressure of 15.0 cm H2O, effectively preventing liquid pinning and back penetration. What's more, the coupled strategy of thermal radiation, conduction, and evaporation resulted in a temperature drop of 20.2°C in the sweaty state. The metafabric also demonstrated superb mechanical robustness, breathability, and washability. The work may offer a scalable and energy-efficient strategy for advanced thermal and moisture management textiles.
05 May 12:36
Multi‐Field Synergy for Orchestrating Filler Angles in Polyimide Aerogels with Switchable Electromagnetic Interference Shielding
by An Liu,
Yali Zhang,
Xingshen Xu,
Jie Kong,
Junwei Gu
benxue liu气凝胶
By developing the synergistic alignment effect of electric/magnetic fields, precise control over the angle between conductive and magnetic fillers is achieved, enabling the fabrication of heterostructure fillers with diverse morphologies. The resulting bidirectionally aligned rGO@NiNWs-90°/PI aerogels exhibit excellent broadband electromagnetic interference (EMI) shielding performance, remarkable resistance to extreme environments, and wide tunability of EMI shielding effectiveness.
ABSTRACT
The fast-evolving IT sector necessitates intelligent electromagnetic interference (EMI) shielding materials capable of real-time, environment-responsive. While current approaches based on reconstructing conductive networks through mechanical strain enable dynamically responsive shielding, but face a narrow tuning range, inadequate stability, and practical limitations. To address this, we propose an electric/magnetic field synergistic regulation strategy. This approach enables precise control over the alignment angle between reduced graphene oxide (rGO) and nickel nanowires (NiNWs) by manipulating the external field direction, producing rGO@NiNWs/polyimide aerogels with 3D ordered networks. Leveraging this design, the aerogels achieve reversible, wide-range tuning of EMI shielding performance through simple physical rotation, enabling reliable “on/off” switching capability. The oriented structure also optimizes both filler interconnection efficiency and interfacial polarization. With an rGO@NiNWs content of 80 wt.% and an inter-phase angle of 90°, the aerogels demonstrate excellent ultra-wideband EMI shielding performance across gigahertz and terahertz bands, with an average shielding effectiveness of 85 dB in the terahertz band, alongside good stability in extreme environments. Finite element simulations further reveal how the spatial configuration of rGO@NiNWs governs the shielding behavior and intelligent response mechanism. This study paves the way for next-generation intelligent electromagnetic protection materials, with promising potential for aerospace and wearable applications.
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25 Dec 22:08
Ultrathin Van der Waals Lanthanum Oxychloride Dielectric for 2D Field‐Effect Transistors
by Linyang Li,
Weiqi Dang,
Xiaofei Zhu,
Haihui Lan,
Yiran Ding,
Zhu‐An Li,
Luyang Wang,
Yuekun Yang,
Lei Fu,
Feng Miao,
Mengqi Zeng
benxue liu二维镧氧氯材料
The ultrathin van der Waals (vdW) LaOCl is synthesized by controlling the growth kinetics. Due to the considerable dielectric properties of LaOCl and its dangling-bond-free surface, the MoS2 field-effect transistor (FET) with vdW LaOCl dielectric exhibits ultralow hysteresis. LaOCl possesses the tremendous potential to act as an ideal gate dielectric for two-dimensional FETs.
Abstract
Downsizing silicon-based transistors can result in lower power consumption, faster speeds, and greater computational capacity, although it is accompanied by the appearance of short-channel effects. The integration of high-mobility 2D semiconductor channels with ultrathin high dielectric constant (high-κ) dielectric in transistors is expected to suppress the effect. Nevertheless, the absence of a high-κ dielectric layer featuring an atomically smooth surface devoid of dangling bonds poses a significant obstacle in the advancement of 2D electronics. Here, ultrathin van der Waals (vdW) lanthanum oxychloride (LaOCl) dielectrics are successfully synthesized by precisely controlling the growth kinetics. These dielectrics demonstrate an impressive high-κ value of 10.8 and exhibit a remarkable breakdown field strength (E bd) exceeding 10 MV cm−1. Remarkably, the conventional molybdenum disulfide (MoS2) field-effect transistor (FET) featuring a dielectric made of LaOCl showcases an almost negligible hysteresis when compared to FETs employing alternative gate dielectrics. This can be attributed to the flawlessly formed vdW interface and excellent compatibility established between LaOCl and MoS2. These findings will motivate the further exploration of rare-earth oxychlorides and the development of more-than-Moore nanoelectronic devices.
benxue liu, ytdcty likes this
25 Dec 21:59
Exceptionally High Saturation Magnetic Flux Density and Ultralow Coercivity via an Amorphous–Nanocrystalline Transitional Microstructure in an FeCo‐Based Alloy
by Xuesong Li,
Jing Zhou,
Laiquan Shen,
Baoan Sun,
Haiyang Bai,
Weihua Wang
benxue liu相转变过程带来的高饱和磁电流密度
An innovative compositional design concept enables the construction of a unique transitional microstructure between traditional amorphous and nanocrystalline alloys, which results in an alloy with an unprecedented combination of exceptionally high saturation magnetic flux density (B s = 1.94 T) and ultralow coercivity (H c = 4.3 A m−1), breaking the general trade-off between B s and H c in the soft-magnetic-material family.
Abstract
High saturation magnetic flux density (B s) of soft magnetic materials is essential for increasing the power density of modern magnetic devices and motor machines. Yet, increasing B s is always at the expense of high coercivity (H c), presenting a general trade-off in the soft magnetic material family. Here, superior comprehensive soft magnetic properties, i.e., an exceptionally high B s of up to 1.94 T and H c as low as 4.3 A m−1 are unprecedentedly combined in an FeCo-based alloy. This alloy is obtained through a composition design strategy to construct a transitional microstructure between amorphous and traditional nanocrystalline alloys, with nanocrystals (with < 5 nm-sized crystal-like regions around) sparsely dispersed in an amorphous matrix. Such transitional microstructure possesses extremely low magnetic anisotropy caused by the annihilation of quasi-dislocation dipoles, and a strong magnetic exchange interaction, which leads to excellent comprehensive magnetic properties. The results provide useful guidelines for the development of the next generation of soft magnetic materials, which are promising for applications of high-frequency, high-efficiency, and energy-saving devices.
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25 Dec 21:53
Direct Synthesis of Polyimide Curly Nanofibrous Aerogels for High‐Performance Thermal Insulation Under Extreme Temperature
by Sai Wang,
Ruida Ding,
Guoqiang Liang,
Wei Zhang,
Fengjin Yang,
Yucheng Tian,
Jianyong Yu,
Shichao Zhang,
Bin Ding
benxue liu聚酰亚胺纤维气凝胶
A polyimide (PI) nanofibrous aerogel consisted of interlocked curly nanofibrous networks (crimp percentage 28.5%) is directly assembled by electrospinning. Benefiting from strong porous aerogel structure (porosity 99.8%), the PI aerogel achieves ultralight property (density 2.4 mg cm−3), mechanical robustness at extreme conditions, and ultralow thermal conductivity (22.4 mW m−1 K−1), thereby offering a promising candidate for thermal insulation under extreme temperature.
Abstract
Maintaining human body temperature is one of the basic needs for living, which requires high-performance thermal insulation materials to prevent heat exchange with external environment. However, the most widely used fibrous thermal insulation materials always suffer from the heavy weight, weak mechanical property, and moderate capacity to suppress heat transfer, resulting in limited personal cold and thermal protection performance. Here, an ultralight, mechanically robust, and thermally insulating polyimide (PI) aerogel is directly synthesized via constructing 3D interlocked curly nanofibrous networks during electrospinning. Controlling the solution/water molecule interaction enables the rapid phase inversion of charged jets, while the multiple jets are ejected by regulating charge density of the fluids, thus synergistically allowing numerous curly nanofibers to interlock and cross-link with each other to form porous aerogel structure. The resulted PI aerogel integrates the ultralight property with density of 2.4 mg cm−3, extreme temperature tolerance (mechanical robustness over −196 to 300 °C), and thermal insulation performance with ultralow thermal conductivity of 22.4 mW m−1 K−1, providing an ideal candidate to keep human thermal comfort under extreme temperature. This work can provide a source of inspiration for the design and development of nanofibrous aerogels for various applications.
houxiaoyu, benxue liu likes this
01 Dec 23:14
Additive Manufacturing of Poly(phenylene Sulfide) Aerogels via Simultaneous Material Extrusion and Thermally Induced Phase Separation
by Garrett F. Godshall,
Daniel A. Rau,
Christopher B. Williams,
Robert B. Moore
benxue liuPPS气凝胶的热致相分离和同步3D打印
Polyphenylene sulfide (PPS) aerogels formed from an environmentally benign, nontoxic solvent are fabricated using material extrusion (MEX) and in situ thermally induced phase separation (TIPS). Printed aerogels demonstrate geometric flexibility and hierarchical porosity while maintaining physical properties inherent to cast analogs. This new additive manufacturing process chain presents a straightforward method for developing printed polymer aerogels from TIPS systems requiring high processing temperatures.
Abstract
Additive manufacturing (AM) of aerogels increases the achievable geometric complexity, and affords fabrication of hierarchically porous structures. In this work, a custom heated material extrusion (MEX) device prints aerogels of poly(phenylene sulfide) (PPS), an engineering thermoplastic, via in situ thermally induced phase separation (TIPS). First, pre-prepared solid gel inks are dissolved at high temperatures in the heated extruder barrel to form a homogeneous polymer solution. Solutions are then extruded onto a room-temperature substrate, where printed roads maintain their bead shape and rapidly solidify via TIPS, thus enabling layer-wise MEX AM. Printed gels are converted to aerogels via postprocessing solvent exchange and freeze-drying. This work explores the effect of ink composition on printed aerogel morphology and thermomechanical properties. Scanning electron microscopy micrographs reveal complex hierarchical microstructures that are compositionally dependent. Printed aerogels demonstrate tailorable porosities (50.0–74.8%) and densities (0.345–0.684 g cm−3), which align well with cast aerogel analogs. Differential scanning calorimetry thermograms indicate printed aerogels are highly crystalline (≈43%), suggesting that printing does not inhibit the solidification process occurring during TIPS (polymer crystallization). Uniaxial compression testing reveals that compositionally dependent microstructure governs aerogel mechanical behavior, with compressive moduli ranging from 33.0 to 106.5 MPa.
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01 Dec 23:10
High Mechanical Strength Alloy‐like Minerals Prepared by Inorganic Ionic Co‐cross‐linking
by Zaiqiang Ma,
Kangren Kong,
Yu Yin,
Zhengxi Guo,
Xiaoming Ma,
Qingyun Lin,
Jie Wang,
Yinlin Shen,
Xingyu Lu,
Xurong Xu,
Xueqian Kong,
Zhaoming Liu,
Ruikang Tang
benxue liu无机离子交联化学
This work develops inorganic ionic co-cross-linking by using calcium carbonate oligomers and calcium phosphate oligomers (CCOs and CPOs) to produce a group of compounds with the chemical formulas Ca(CO3) x (PO4)2(1- x )/3 (0 < x < 1), referred to as CaCPs. They exhibit molecular homogeneity, a single-transition temperature and adjustable chemical compositions, and they are readily transformed to high strength alloy-like minerals (ALMs) by heat-induced crystallization.
Abstract
Alloys often combine different metals to generate superior mechanical properties. However, it is challenging to prepare high mechanical strength minerals with similar strategies. Using calcium carbonate (CaC) and calcium phosphate (CaP) as examples, this work synthesizes a group of compounds with the chemical formulas Ca(CO3) x (PO4)2(1- x )/3 (0 < x < 1, CaCPs) by cross-linking ionic oligomers. Unlike mixtures, these CaCPs exhibit a single temperature for the phase transition from amorphous to crystallized CaC (calcite) and CaP (hydroxyapatite). By heat-induced synchronous crystallization, dual-phase CaC/CaP with continuous crystallized boundaries are resembled to alloy-like minerals (ALMs). The mechanical properties of the ALMs are adjusted by tailoring their chemical compositions to reach a hardness of 5.6 GPa, which exceed those of control calcite and hydroxyapatite samples by 430% and 260%, respectively. This strategy expands the chemical scope of inorganic materials and holds promise for preparing high-performance minerals.
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01 Dec 22:56
Robust and Flame‐Retardant Zylon Aerogel Fibers for Wearable Thermal Insulation and Sensing in Harsh Environment
by Peiying Hu,
Fushuo Wu,
Bingjie Ma,
Jie Luo,
Peigen Zhang,
Zhihua Tian,
Jin Wang,
ZhengMing Sun
benxue liu气凝胶纤维
All-organic aerogel fibers stable up to 650 °C derived from Zylon are synthesized by controlled proton absorption gelation spinning and heat-induced cross-linking strategy. The aerogel fibers exhibit high flexibility, high mechanical strength (8.6 MPa), good flame retardancy (LOI = 54.2%), and textiles woven from these aerogel fibers exhibit outstanding thermal insulation and sensing properties.
Abstract
The exceptional lightweight, highly porous, and insulating properties of aerogel fibers make them ideal for thermal insulation. However, current aerogel fibers face limitations due to their low resistance to harsh environments and a lack of intelligent responses. Herein, a universal strategy for creating polymer aerogel fibers using crosslinked nanofiber building blocks is proposed. This approach combines controlled proton absorption gelation spinning with a heat-induced crosslinking process. As a proof-of-concept, Zylon aerogel fibers that exhibited robust thermal stability (up to 650 °C), high flame retardancy (limiting oxygen index of 54.2%), and extreme chemical resistance are designed and synthesized. These fibers possess high porosity (98.6%), high breaking strength (8.6 MPa), and low thermal conductivity (0.036 W m−1 K−1). These aerogel fibers can be knotted or woven into textiles, utilized in harsh environments (−196–400 °C), and demonstrate sensitive self-powered sensing capabilities. This method of developing aerogel fibers expands the applications of high-performance polymer fibers and holds great potential for future applications in wearable smart protective fabrics.
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01 Dec 22:52
Poly(3‐hexylthiophene)/perovskite Heterointerface by Spinodal Decomposition Enabling Efficient and Stable Perovskite Solar Cells
by Yuqian Yang,
Qiu Xiong,
Jihuai Wu,
Yongguang Tu,
Tianxiao Sun,
Guixiang Li,
Xuping Liu,
Xiaobing Wang,
Yitian Du,
Chunyan Deng,
Lina Tan,
Yuelin Wei,
Yu Lin,
Yunfang Huang,
Miaoliang Huang,
Weihai Sun,
Leqing Fan,
Yiming Xie,
Jianming Lin,
Zhang Lan,
Valerio Stacchinii,
Artem Musiienko,
Qin Hu,
Peng Gao,
Antonio Abate,
Mohammad Khaja Nazeeruddin
benxue liu通过旋节线分解，产生异相界面，带来优异性能
A poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface is created by using a novel strategy of spinodal decomposition, which effectively alleviates both energy and carrier losses in perovskite solar cells (PSCs). This innovative approach achieves a remarkable 24.53% power conversion efficiency for PSCs.
Abstract
The best research-cell efficiency of perovskite solar cells (PSCs) is comparable with that of mature silicon solar cells (SSCs); However, the industrial development of PSCs lags far behind SSCs. PSC is a multiphase and multicomponent system, whose consequent interfacial energy loss and carrier loss seriously affect the performance and stability of devices. Here, by using spinodal decomposition, a spontaneous solid phase segregation process, in situ introduces a poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface with interpenetrating structure in PSCs. The P3HT/PVK heterointerface tunes the energy alignment, thereby reducing the energy loss at the interface; The P3HT/PVK interpenetrating structure bridges a transport channel, thus decreasing the carrier loss at the interface. The simultaneous mitigation of energy and carrier losses by P3HT/PVK heterointerface enables n-i-p geometry device a power conversion efficiency of 24.53% (certified 23.94%) and excellent stability. These findings demonstrate an ingenious strategy to optimize the performance of PSCs by heterointerface via Spinodal decomposition.
26 Nov 21:31
UV‐Curing Assisted Direct Ink Writing of Dense, Crack‐Free, and High‐Performance Zirconia‐Based Composites With Aligned Alumina Platelets
by Maoyin Li,
Shuigen Huang,
Evita Willems,
Jeroen Soete,
Masanao Inokoshi,
Bart Van Meerbeek,
Jef Vleugels,
Fei Zhang
benxue liu3D打印氧化锆
A hybrid 3D printing by coupling UV-curing with direct ink writing is proposed to fabricate dense and crack-free ceramics. Non-reactive diluent relieves polymerization-induced stress, avoiding warpage and cracking, and facilitates de-binding. Benefiting from aligned platelets, this work highlights the possibilities of additively fabricating ceramics that are stronger than conventionally manufactured ceramics, along with the unprecedented potentials of locally tunable compositions.
Abstract
Additive manufacturing (AM) of high-performance structural ceramic components with comparative strength and toughness as conventionally manufactured ceramics remains challenging. Here, a UV-curing approach is integrated in direct ink writing (DIW), taking advantage from DIW to enable an easy use of high solid-loading pastes and multi-layered materials with compositional changes; while, avoiding drying problems. UV-curable opaque zirconia-based slurries with a solid loading of 51 vol% are developed to fabricate dense and crack-free alumina-toughened zirconia (ATZ) containing 3 wt% alumina platelets. Importantly, a non-reactive diluent is added to relieve polymerization-induced internal stresses, avoid subsequent warping and cracking, and facilitate the de-binding. For the first time, UV-curing assisted DIW-printed ceramic after sintering reveals even better mechanical properties than that processed by a conventional pressing. This is attributed to the aligned alumina platelets, enhancing crack deflection and improving the fracture toughness from 6.8 ± 0.3 MPa m0.5 (compacted) to 7.4 ± 0.3 MPa m0.5 (DIW). The four-point bending strength of the DIW ATZ (1009 ± 93 MPa) is also higher than that of the conventionally manufactured equivalent (861 ± 68 MPa). Besides homogeneous ceramic, laminate structures are demonstrated. This work provides a valuable hybrid approach to additively manufacture tough and strong ceramic components.
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26 Nov 21:19
Complete Suppression of Phase Segregation in Mixed‐Halide Perovskite Nanocrystals under Periodic Heating
by Shengnan Feng,
Yu Ju,
Rentong Duan,
Zaiqin Man,
Shuyi Li,
Fengrui Hu,
Chunfeng Zhang,
Shuxia Tao,
Weihua Zhang,
Min Xiao,
Xiaoyong Wang
benxue liu利用超快周期性热处理抑制复合卤化物钙钛矿的相分离
When mixed-halide CsPbBr1.2I1.8 nanocrystals are periodically heated with a temperature change of ≈10 °C, the phase-segregation effect can be completely suppressed even under strong light illumination. The above finding marks the emergence of a practical solution to the detrimental phase-segregation problem, given that a small temperature modulation is readily available in various fundamental and practical studies of mixed-halide perovskite nanocrystals.
Abstract
Under continuous light illumination, it is known that localized domains with segregated halide compositions form in semiconducting mixed-halide perovskites, thus severely limiting their optoelectronic applications due to the negative changes in bandgap energies and charge-carrier characteristics. Here mixed-halide perovskite CsPbBr1.2I1.8 nanocrystals are deposited onto an indium tin oxide substrate, whose temperature can be rapidly changed by ≈10 °C in a few seconds by applying or removing an external voltage. Such a sudden temperature change induces a temporary transition of CsPbBr1.2I1.8 nanocrystals from the segregated phase to the mixed phase, the latter of which can be permanently maintained when the light illumination is coupled with periodic heating cycles. These findings mark the emergence of a practical solution to the detrimental phase-segregation problem, given that a small temperature modulation is readily available in various fundamental studies and practical devices of mixed-halide perovskites.
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06 Nov 13:06
Biodegradable Dual‐Network Cellulosic Composite Bioplastic Metafilm for Plastic Substitute
by Dong Wang,
Shuo Shi,
Yanyun Mao,
Leqi Lei,
Shaohai Fu,
Jinlian Hu
benxue liu双网络纤维素复合材料生物塑料介观薄膜用于塑料替代物
The novel dual-network design strategy is proposed to prepare a high-performance cellulosic composite bioplastic metafilm with exceptional mechanical toughness (23.5 MJ m−3), flame retardance, and solvent resistance. Moreover, it has a high maximum usage temperature (245 °C), lower thermal expansion coefficient (15.19 ppm °C−1), good biocompatibility, and natural biodegradation, which is competitive for plastic substitute.
Abstract
With the escalating environmental and health concerns over petroleum-based plastics, sustainable and biodegradable cellulosic materials are a promising alternative to plastics, yet remain unsatisfied properties such as fragility, inflammability and water sensitivity for practical usage. Herein, we present a novel dual-network design strategy to address these limitations and fabricate a high-performance cellulosic composite bioplastic metafilm with the exceptional mechanical toughness (23.5 MJ m−3), flame retardance, and solvent resistance by in situ growth of cyclotriphosphazene-bridged organosilica network within bacterial cellulose matrix. The phosphorus, nitrogen-containing organosilica network, verified by the experimental and theoretical results, plays a triple action on significantly enhancing tensile strength, toughness, flame retardance and water resistance of composite bioplastic metafilm. Furthermore, cellulosic bioplastic composite metafilm demonstrates a higher maximum usage temperature (245 °C), lower thermal expansion coefficient (15.19 ppm °C−1), and better solvent resistance than traditional plastics, good biocompatibility and natural biodegradation. Moreover, the composite bioplastic metafilm have a good transparency of average 74 % and a high haze over 80 %, which can serve as an outstanding substrate substitute for commercial polyethylene terephthalate film to address the demand of flexible ITO films. This work paves a creative way to design and manufacture the competitive bioplastic composite to replace daily-used plastics.
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06 Nov 11:56
Scalable Photochromic Film for Solar Heat and Daylight Management
by Weihao Meng,
Augustinus J.J. Kragt,
Yingtao Gao,
Eleonora Brembilla,
Xiaowen Hu,
Julia S. van der Burgt,
Albertus P.H.J. Schenning,
Tillmann Klein,
Guofu Zhou,
Eric R. van den Ham,
Longfei Tan,
Laifeng Li,
Jingxia Wang,
Lei Jiang
benxue liu中科院理化所大面积光致变色薄膜用于太阳热和日光管理实现节能和低碳
A photochromic (PC) film that simultaneously regulates solar heat and visible light entrance is introduced. On a sunny day, the film tints and blocks sunlight, which reduces energy consumption for cooling and preventing excessive brightness and glare. With weak sunlight intensity, the photochromic film becomes transparent to let sunlight enter the room, which prevents additional heating and lighting energy use.
Abstract
The adaptive control of sunlight through photochromic smart windows could have a huge impact on the energy efficiency and daylight comfort in buildings. However, the fabrication of inorganic nanoparticle and polymer composite photochromic films with a high contrast ratio and high transparency/low haze remains a challenge. Here, a solution method is presented for the in situ growth of copper-doped tungsten trioxide nanoparticles in polymethyl methacrylate, which allows a low-cost preparation of photochromic films with a high luminous transparency (luminous transmittance T lum = 91%) and scalability (30 × 350 cm2). High modulation of visible light (ΔT lum = 73%) and solar heat (modulation of solar transmittance ΔT sol = 73%, modulation of solar heat gain coefficient ΔSHGC = 0.5) of the film improves the indoor daylight comfort and energy efficiency. Simulation results show that low-e windows with the photochromic film applied can greatly enhance the energy efficiency and daylight comfort. This photochromic film presents an attractive strategy for achieving more energy-efficient buildings and carbon neutrality to combat global climate change.
wanghonglanzhou, houxiaoyu and one other like this
03 Nov 22:40
Mechanically Strengthened Aerogels through Multiscale, Multicompositional, and Multidimensional Approaches: A Review
by Vinayak G. Parale,
Taehee Kim,
Haryeong Choi,
Varsha D. Phadtare,
Rushikesh P. Dhavale,
Kazuyoshi Kanamori,
Hyung‐Ho Park
benxue liu机械增强的气凝胶综述
It has already been ≈90 years since the first development of aerogels, and many researchers have devoted tremendous efforts to enhance their mechanical properties, which is yet completely achieved. This review presents multiscale, multicompositional and multidimensional strategies, resulting from flexible synthesis techniques for 0D–1D, 0D–2D, 1D–2D, and 0D–1D–2D combined aerogels.
Abstract
In recent decades, aerogels have attracted tremendous attention in academia and industry as a class of lightweight and porous multifunctional nanomaterial. Despite their wide application range, the low mechanical durability hinders their processing and handling, particularly in applications requiring complex physical structures. “Mechanically strengthened aerogels” have emerged as a potential solution to address this drawback. Since the first report on aerogels in 1931, various modified synthesis processes have been introduced in the last few decades to enhance the aerogel mechanical strength, further advancing their multifunctional scope. This review summarizes the state-of-the-art developments of mechanically strengthened aerogels through multicompositional and multidimensional approaches. Furthermore, new trends and future directions for as prevailed commercialization of aerogels as plastic materials are discussed.
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