By merely slightly adjusting positions of insulator or semiconductor cylinders (nanorods) in a honeycomb lattice, electromagnetic waves can propagate without being scattered even at corners of crystal or by defects.
Invisibility cloaks are a staple of science fiction and fantasy, from Star Trek to Harry Potter, but don't exist in real life, or do they? Scientists have devised an ultra-thin invisibility 'skin' cloak that can conform to the shape of an object and conceal it from detection with visible light. Although this cloak is only microscopic in size, the principles behind the technology should enable it to be scaled-up to conceal macroscopic items as well.
Scientists have investigated a way to create linear chains of carbon atoms from laser-melted graphite. The material, called carbyne, could have a number of novel properties, including the ability to adjust the amount of electrical current traveling through a circuit, depending on the user?s needs.
Germanium defects in a diamond crystal lattice act as a reliable source for single photons, new research shows. The results provide a promising new route to building components for quantum cryptography and biomarkers.
Scientists have developed a new material that combines both electrical and magnetic order at room temperature, using a design approach which may enable the development of low-energy computer memory technologies.
A co-op partnership of Drexel U with Korea's National Research Foundation will give the students a chance to apply their talents in the nanofabrication center frequented by companies like Samsung and Hyundai, using the latest nanomaterials developed by Drexel's materials scientists.
Researchers report on the first terahertz (THz) emitter based on femtosecond-laser-ablated gallium arsenide (GaAs), demonstrating a 65% enhancement in THz emission at high optical power compared to the nonablated device. Counter-intuitively, the ablated device shows significantly lower photocurrent and carrier mobility.
The National Science Foundation has selected the Cornell NanoScale Science and Technology Facility (CNF) to be part of the newly established National Nanotechnology Coordinated Infrastructure (NNCI). Cornell will receive $8 million from the federal agency over five years.
The award, which carries $2.5 million in funding for five years and is renewable for a second five-year period, will establish the Virginia Tech National Center for Earth and Environmental Nanotechnology Infrastructure.