Shared posts

08 Apr 06:04

Exploration of the form factors of turbulence kinetic energy transfer for shear exfoliation of graphene

by Kangwei Liu, Sum-Wai Chiang, Bin Liang, Caiwu Liang, Yiming Sui, Wanyu Dai, Min Wang, Shengyu Hu, Feiyu Kang and Cheng Yang
Mass production of defect-free and large-lateral-size 2D materials via cost-effective methods is very important. Recently, shear exfoliation has shown great promise for large-scale production due to its simple operation, environmental-benignity and wide adaptability. However, a long-standing challenge is that with the production of more nanosheets, a ceiling yield and shattered products are encountered, which significantly limits their wider application. The method and efficiency of energy transfer in fluid is undoubtedly the key point in determining exfoliation efficiency, yet its in-depth mechanism has not yet been described. Thus, a thorough investigation of turbulence energy transfer is critically necessary. Herein, we identify two main factors that critically determine the exfoliation yield and provide a statistical analysis of the relationship between these factors and the exfoliation yield. In the initial shearing process, the coexistence of the 2D nanosheets and raw part...
16 Jan 17:10

Parameterization of a COMPASS force field for single layer blue phosphorene

by Tingting Zhang, Xiaona Di, Guibin Chen and Liyan Zhu
We parameterize an accurate force field for single-layer blue phosphorene based on the framework of COMPASS (a nomenclature of condensed-phase optimized molecular potentials for atomistic simulation studies). During parameterization, the biaxial-strained samples and blue phosphorene nanotubes, as well as the phonon dispersion, are adopted as training sets. The combination of genetic algorithm and the simplex method finally leads to optimized parameters of the COMPASS force field whose accuracy is manifested by the excellent agreement between mechanical and vibrational properties predicted by our best-fitted COMPASS model and the ones by first-principles calculations. Such a high-accurate force field would be a good starting point for studying many physical properties of blue phosphorene based materials.
23 Mar 06:09

Interactions of an Emerging Fungal Pathogen Scedosporium aurantiacum with Human Lung Epithelial Cells

by Jashanpreet Kaur

Interactions of an Emerging Fungal Pathogen Scedosporium aurantiacum with Human Lung Epithelial Cells

Interactions of an Emerging Fungal Pathogen <i>Scedosporium aurantiacum</i> with Human Lung Epithelial Cells, Published online: 22 March 2019; doi:10.1038/s41598-019-41435-3

Interactions of an Emerging Fungal Pathogen Scedosporium aurantiacum with Human Lung Epithelial Cells
22 Mar 00:56

A guide to the Nature Index

A guide to the Nature Index

A guide to the Nature Index, Published online: 20 March 2019; doi:10.1038/d41586-019-00834-2

A description of the terminology and methodology used in this supplement, and a guide to the functionality available free online at natureindex.com
22 Mar 00:56

Japan expands international scientific links

by Catherine Armitage

Japan expands international scientific links

Japan expands international scientific links, Published online: 20 March 2019; doi:10.1038/d41586-019-00829-z

The country hopes building connections with overseas researchers will help lift its research performance.
22 Mar 00:56

Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice

by K. L. Zhang

Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice

Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice, Published online: 21 March 2019; doi:10.1038/s41598-019-41529-y

Majorana flat band edge modes of topological gapless phase in 2D Kitaev square lattice
07 Feb 08:10

−60 °C solution synthesis of atomically dispersed cobalt electrocatalyst with superior performance

by Kai Huang

−60 °C solution synthesis of atomically dispersed cobalt electrocatalyst with superior performance

−60 °C solution synthesis of atomically dispersed cobalt electrocatalyst with superior performance, Published online: 05 February 2019; doi:10.1038/s41467-019-08484-8

Rapid nucleation and growth hinder the formation of atomically dispersed metals on solid supports in solution. Here the authors report a low-temperature solution-phase synthesis for isolated cobalt atoms on nitrogen-doped carbon, with electrocatalytic activity for oxygen reduction in a microbial fuel cell.
26 Jul 14:00

Addendum: Preventing the return of fear in humans using reconsolidation update mechanisms

by Daniela Schiller

Addendum: Preventing the return of fear in humans using reconsolidation update mechanisms

Addendum: Preventing the return of fear in humans using reconsolidation update mechanisms, Published online: 26 July 2018; doi:10.1038/s41586-018-0405-7

Addendum: Preventing the return of fear in humans using reconsolidation update mechanisms
20 Jul 13:13

Lithium–Sulfur Batteries: 3D CNTs/Graphene‐S‐Al3Ni2 Cathodes for High‐Sulfur‐Loading and Long‐Life Lithium–Sulfur Batteries (Adv. Sci. 7/2018)

by Zeqing Guo , Huagui Nie , Zhi Yang , Wuxing Hua , Chunping Ruan , Dan Chan , Mengzhan Ge , Xi'an Chen , Shaoming Huang
Advanced Science, Volume 5, Issue 7, July 2018.
30 Jan 12:35

Highly Conductive and Thermally Stable Ion Gels with Tunable Anisotropy and Modulus

by Ying Wang, Ying Chen, Jianwei Gao, Hyun Gook Yoon, Liyu Jin, Maria Forsyth, Theo J. Dingemans, Louis A. Madsen
Thumbnail image of graphical abstract

A new liquid-crystalline ion gel exhibits unprecedented properties: conductivity up to 8 mS cm−1, thermal stability to 300 °C, and electrochemical window to 6.1 V, as well as adjustable transport anisotropy (up to 3.5×) and elastic modulus (0.03–3 GPa). The combination of ionic liquid and magnetically oriented rigid-rod polyanion provides widely tunable properties for use in diverse electrochemical devices.