Category Chemistry/Nanotechnology

1, Schematic shows a perovskite sample (black) examined by the photothermal induced resonance technique. When the sample absorbs pulses of light (depicted as disks in purple cones), the sample expands rapidly, causing the cantilever of an atomic force microscope (AFM) to vibrate like a struck tuning fork. The cantilever’s motion, which is detected by reflecting the AFM laser light (red) off the AFM detector, provides a sensitive measure of the amount of light absorbed.  2. Image recorded by an atomic force microscope reveals the topography of a polycrystalline sample of the perovskite, including the boundaries between crystals. 3...

a) Synthetic scheme of MoNi4 electrocatalyst supported by the MoO2 cuboids on nickel foam; b) polarization curves of the MoNi4 electrocatalyst supported by the MoO2 cuboids, pure Ni nanosheets and MoO2 cuboids on the nickel foam; c) calculated adsorption free energy diagram for the Tafel step.
Credit: Image courtesy of Technische Universitaet Dresden

1. Lithium metal coats the hybrid graphene and carbon nanotube anode in a battery created at Rice University. The lithium metal coats the three-dimensional structure of the anode and avoids forming dendrites. Courtesy of the Tour Group.
2. A graphic shows carbon nanotubes covalently bonded to a graphene substrate. The material created at Rice University is being tested as an anode for high-capacity lithium metal batteries. Courtesy of the Tour Group – See more at: http://news.rice.edu/2017/05/18/graphene-nanotube-hybrid-boosts-lithium-metal-batteries-2/#sthash.eX5HvXSE.dpuf
3. An electron microscope image shows a carbon nanotube evenly coated with lithium metal...

A self-assembling membrane for water purification. Credit: Image courtesy of Weizmann Institute of Science