Category Chemistry/Nanotechnology

(a) Crystal structure of MoS2: S atoms in gold and Mo in black with unit cell parameter a and b, (b) top view of a single-layer MoS2 structure in honeycomb shape; (c) HRTEM of 2H-MoS2 (top insert is the Fast Fourier Transform (FFT) image showing the planes; slight distortion is due to the tilting of the flake in the TEM; a1, a2 and a3 presented HRTEM image is the Mo-Mo interatomic distance of 2.8 Å for 2H-MoS2 (d–e) schematic of the indirect electron transition in bulk MoS2 and direct electron transition in single layer MoS2 respectively.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used in a variety of applications, including microscopic actuators and grippers for surgical robots...

Los Alamos Center for Advanced Solar Photophysics researchers hold a large prototype solar window. From left to right: Jaehoon Lim, Kaifeng Wu, Victor Klimov, Hongbo Li. Credit: Los Alamos National Laboratory

Los Alamos National Lab team demonstrates an important step in taking quantum dot, solar-powered windows from the laboratory to the construction site by proving that the technology can be scaled up from palm-sized demonstration models to windows large enough to put in and power a building. “We are developing solar concentrators that will harvest sunlight from building windows and turn it into electricity, using quantum-dot based luminescent solar concentrators (LSCs),” said lead scientist Victor Klimov.

LSCs are light-management devices that can serve as large-area sunlight collectors...

A: 3D scaffold of the microbattery machined in a silicon substrate to form double microtubes. B: schematic of a 3D Li-ion microbattery showing the stacking of materials deposited in thin layers using ALD. C: Transmission electron microscopy analysis of thin film coatings

In the race towards miniaturization, a French-US team has succeeded in improving the energy density of a rechargeable battery without increasing its size (limited to a few square millimeters in mobile sensors). This feat was achieved by developing a 3D structure made of microtubes, the first step towards producing a complete microbattery. The first experiments have demonstrated the excellent conductivity of the battery’s solid electrolyte/.

In the era of connected devices, intelligent connected microsensors require miniatu...

© Photo Fraunhofer IGB Various raw materials as building blocks for plastics.

A process for manufacturing high-quality plastics from terpenes, a waste stream of the cellulose production has been developed by Fraunhofer researchers. Even if fossil resources got much cheaper in the last years there are big efforts to replace standard plastics by substances made from renewable resources. A reduced consumption of fossil resources is especially important because of the climate change caused by the release of CO2. Apart from the production of biodegradable polymers, for example for packaging applications, there is a big interest in high performance materials made from renewable resources.

The synthesis of polyamides from terpenes was developed at BioCat – Bio, Electro and Chemocataysis, the Str...