Last week’s DDoS attack on Dyn that shut down portions of the internet was fueled by bots created from hacked connected devices, like internet-connected cameras and DVRs, but can also theoretically include connected routers, printers, and more. While there’s not exactly a fix for this problem, IoT Scanner is a tool that can at least tell you if a device in your house is creating a vulnerability.
This one is dedicated to my like, dozen friends who just had kids this year. There’s still a week left if you wanna get on this, you’ve still got time, only a couple years until they’re too big to carry on your back all night.
Props to by buddy Leigh Anna, who came up with this joke by suggesting this exact costume to a dad with his little Batman son at FanExpo one year. He was really excited at the prospect of putting it together for the next year, as most dads I know would be.
To apply electrically nonconductive metal–organic frameworks (MOFs) in an electrocatalytic oxygen reduction reaction (ORR), we have developed a new method for fabricating various amounts of CuS nanoparticles (nano-CuS) in/on a 3D Cu–MOF, [Cu3(BTC)2⋅(H2O)3] (BTC=1,3,5-benzenetricarboxylate). As the amount of nano-CuS increases in the composite, the electrical conductivity increases exponentially by up to circa 109-fold, while porosity decreases, compared with that of the pristine Cu-MOF. The composites, nano-CuS(x wt %)@Cu-BTC, exhibit significantly higher electrocatalytic ORR activities than Cu-BTC or nano-CuS in an alkaline solution. The onset potential, electron transfer number, and kinetic current density increase when the electrical conductivity of the material increases but decrease when the material has a poor porosity, which shows that the two factors should be finely tuned by the amount of nano-CuS for ORR application. Of these materials, CuS(28 wt %)@Cu-BTC exhibits the best activity, showing the onset potential of 0.91 V vs. RHE, quasi-four-electron transfer pathway, and a kinetic current density of 11.3 mA cm−2 at 0.55 V vs. RHE.
A new method for fabricating CuS nanoparticles in/on a Cu-MOF was developed. The conductivity of the composites is up to 109-fold higher than that of the pristine MOF. They also show excellent activities for the oxygen reduction reaction, affording more positive onset potentials, higher electron transfer numbers, and greater kinetic current densities than the pristine MOF.