Science

Tags:

Channeling valleytronics in graphene: Berkeley Lab researchers discover 1-D conducting channels in bilayer graphene

To the list of potential applications of graphene - a two-dimensional semiconductor of pure carbon that is stronger and much faster than silicon - we can now add valleytronics, the coding of data in the wavelike motion of electrons as they speed through a conductor. Berkeley Lab researchers have discovered topologically protected one-dimensional electron conducting channels at the domain walls of bilayer graphene. These conducting channels are "valley polarized," which means they can serve as filters for electron valley polarization in future devices such as quantum computers.

51438.jpg
In this near-field infrared nanoscopy image of bilayer graphene, domain walls are revealed by bright lines that arise because of the walls' local electronic structures and IR responses.

Tags:

Field-effect transistors on hybrid perovskites fabricated for first time

Researchers from Wake Forest University and the University of Utah are the first to successfully fabricate halide organic-inorganic hybrid perovskite field-effect transistors and measure their electrical characteristics at room temperature.

"We designed the structure of these field-effect transistors that allowed us to achieve electrostatic gating of these materials and determine directly their electrical properties," said lead author, Oana Jurchescu, an assistant professor of physics at Wake Forest. "Then we fabricated these transistors with the Utah team and we measured them here in our lab."

Tags:

Testing Facility for Graphene Enhanced Composite Pipes

EPL Composite Solutions (EPL), a subsidiary of Haydale, has developed an in-house testing facility to measure and demonstrate the durability of a new generation of graphene enhanced composite gas pipes and pipeline materials.

51426.jpg

Tags:

Iranian Scientists Present Model to Study Mechanical Vibrations of Structures Containing Nanocomposites

Iranian researchers studied the mechanical vibrations of structures containing nanocomposites reinforced with carbon nanotubes.

50482.jpg

Tags:

Souped-up Remote Control Switches Behaviors On-and-off in Mice

DREADD_mouse_brain_receptor_protein_149999_2_0.jpg
The updated DREADD (Designer Receptors Activated Exclusively by Designer Drugs) achieves bidirectional remote control of a neuron (bottom) and behavior by introducing a synthetic, experimental chemical messenger system into specific brain circuits in mice. It consists of a receptor protein (top) and matching inert chemical (middle) for increasing neuronal activity (red) and another set for reducing activity (blue).

Tags:

Time Dependant Spectroscopy of Microscopic Samples: CRAIC TimePro™ software is used with CRAIC Technologies microspectrometers to measure the kinetic UV-visible-NIR, Raman and fluorescence spectra of microscopic sample areas

CRAIC Technologies, a leading innovator of UV-visible-NIR microanalysis solutions, is proud to introduce CRAIC TimePro™ kinetic spectroscopy software. This software package is designed to be used with CRAIC Technology’s microspectrophotometers and their controlling Lambdafire ™ software. CRAIC TimePro™ allows the user to monitor changes in the spectra over time. The most unique feature is that this software will allow users to measure the time dependant changes in full UV-visible-NIR range reflectance, absorbance and even emission spectra of microscopic samples. This will provide a unique and valuable tool for everything from chemistry to biological research.

51412.jpg

Tags:

Novel superconducting undulator provides first x-ray light at ANKA

Synchrotron radiation facilities provide insights into the world of very small structures like microbes, viruses or nanomaterials and rely on dedicated magnet technology, which is optimized to produce highest intensity beams. The ANKA synchrotron radiation facility at KIT and Babcock Noell GmbH now took a technological leap forward: They have successfully developed, installed, and tested a novel full-length superconducting undulator, for the first time providing higher peak magnetic fields for the production of x-rays than traditional permanent-magnet undulators currently in use in facilities around the world.

51409.jpg
SCU15 is a unique superconducting undulator for production of high-brilliance x-rays installed in the ANKA storage ring.

Tags:

NASA Completes MESSENGER Mission with Expected Impact on Mercury's Surface

15-079.jpg

Tags:

ORNL researchers probe chemistry, topography and mechanics with one instrument

The probe of an atomic force microscope (AFM) scans a surface to reveal details at a resolution 1,000 times greater than that of an optical microscope. That makes AFM the premier tool for analyzing physical features, but it cannot tell scientists anything about chemistry. For that they turn to the mass spectrometer (MS).

51411_1.jpg
For a 500-nanometer-deep polymeric thin film made of polystyrene (lighter) and poly-2-vinylpyridine (darker), one multimodal instrument imaged, from left, surface topography, elasticity of the bulk material and buried chemical behavior.

Tags:

Production of Industrial Nano-Membrane for Water, Wastewater Purification Device in Iran

Ab Roobesh Rosoob (Mahsar) Engineering and Productive Company produced and presented to the market water and wastewater purification devices using nanotechnology.

51410.jpg