While investigating the behavior of a hybrid nanomaterial made from carbon nanotubes and tin oxide nanoparticles, University of Wisconsin-Milwaukee scientists synthesized an entirely new graphene-based material they are calling graphene monoxide. The notable feature of the material, which does not exist in nature, is its ordered, semiconducting properties.
In optomechanics studies, most researchers use a moving mirror made up of 16 to 40 layers of dielectric film with different indices of refraction, culminating in a stack structure a few micrometers thick. With this they measure the force of light on mechanical features. A team of scientists in Germany, however, have designed and tested a device that is both smaller and two orders of magnitude more effective.
Researchers in the U.K. have demonstrated that a honeycomb pattern of nano-sized magnets, in a material known as spin ice, introduces competition between neighboring magnets, and reduces the problems caused by these interactions by two-thirds. Large arrays of these nano-magnets, they say, can store computable information.
At this week’s American Chemical Society meeting in San Diego, Rice University chemist James Tour revealed a new device his laboratory has invented. Using silicon oxide as the active component, his team has made a transparent, flexible memory technology that could be combined with other see-through components such as integrated circuits and batteries.
Previous efforts to integrated lasers in silicon chips have relied on and air-and-semiconductor interface, but this has resulted in poor emission efficiency. Researchers in Singapore have invented a solution called a micro-loop mirror that acts as a waveguide to improve operation to 98% light reflection efficiency.
Researchers at the University of Notre Dame and Pennsylvania State University have announced breakthroughs in the development of tunneling field effect transistors (TFETs), a semiconductor technology that takes advantage of the quirky behavior of electrons at the quantum level.
So far, quantum bits have only existed in relatively large vacuum chambers. A research team in Germany, with help from colleagues in Japan and France, has now generated them in a high-quality gallium arsenide crystal.
Researchers at CRANN, a nanoscience institute based in Trinity College Dublin, have discovered a new material could fill a previously missing component in display electronics—a good quality p-type transparent conducting oxide.
While diamonds may be a girl's best friend, they're also well loved by scientists working to enhance the performance of electronic devices. Two new studies performed at Argonne National Laboratory have revealed a new pathway for materials scientists to use previously unexplored properties of nanocrystalline-diamond thin films.
Researchers at Helmholtz Center in Germany have developed a magnetic valve that could be an enabling technology for spintronics. The new structure allows for data to remain stored even after electric current has been cut, and memory in the valve can be re-written indefinitely.
Broadly speaking, the two major areas of research at Massachusetts Institute of Technology's Microsystems Technology Laboratory are electronics—transistors in particular—and microelectromechanical systems, or MEMS—tiny mechanical devices with moving parts. Both strains of research could have significant implications for manufacturing in the United States, but at least for the moment, the market for transistor innovation is far larger.
Although the tiny device measures no more than 8 x 8 mm it takes eight weeks to produce a silicon drift detector (SDD), or silicon drift diode, which is a basic spectroscopic component of instruments like medical X-ray systems and detectors at CERN. Scientists in Norway represent one of just three worldwide suppliers of these exceedingly sensitive and difficult-to-produce devices.
Researchers at the Max Planck Institute have put together a sandwich of a ferroelectric layer between two ferromagnetic materials that responded to a short electric pulse. This changes the magnetic transport properties of the material in such a way that information can be placed in four states instead of just two. The potential increase in storage density is great.
Scientists using a variant of atomic force microscopy called Kelvin probe force microscopy, at low temperatures and in ultrahigh vacuum, have recently obtained the first image of the charge distribution within a single molecule. The molecule is the same as the type used in IBM’s single-molecule logic switch.
A long-standing controversy regarding the semiconductor gallium manganese arsenide, one of the most promising materials for spintronic technology, looks to have been resolved. Researchers with Lawrence Berkeley National Laboratory and Notre Dame University found the that the spintronic properties do not arise from a valence energy band, as many scientists have argued.
Complex transition metal oxides have for years held great promise for information and energy applications, but reducing the band gaps of these insulators without hurting performance has been a major challenge. A recent layer-by-layer growth method pioneered at Oak Ridge National Laboratory has achieved a 30% reduction in this band gap, a significant improvement.
The smallest transistor ever built—in fact, the smallest transistor that can be built—has been created using a single phosphorous atom by an international team of researchers at the University of New South Wales, Purdue University, and the University of Melbourne.
As integrated circuits and environmentally friendly technologies emerged, R&D 100 Award winners set the pace.
At this week's SPIE Advanced Lithography conference in San Jose, Calif., imec plans to announce the successful implementation of the world's first 300-mm fab-compatible directed self-assembly process line all under one roof.
Engineers at two universities and IBM Research’s Zurich, Switzerland, R&D center have developed an ultrasharp silicon carbide tip that is 10,000 times more wear resistant than previous than previous designs and 100,000 times smaller than the tip of a pencil.
Working together, Cadence Design Systems and Samsung Foundry have developed design-for-manufacturing work flows to tackle physical signoff and electrical variability optimization for 32- and 28-nm system-on-a-chip designs. Now, they extended advanced DFM flow to 20 nm as well.
Although of purely scientific interest for now, a method that researchers at the SLAC National Accelerator Laboratory have invented to alter magnetic properties in manganese-oxide materials without heating them up could greatly speed up low-voltage, non-volatile computer memory.
A research team led by physicists at the University of California, Riverside has identified a property of bilayer graphene (BLG) that the researchers say is analogous to finding the Higgs boson in particle physics. The physicists report that in investigating BLG's properties they found that when the number of electrons on the BLG sheet is close to 0, the material becomes insulating.
Researchers at the Niels Bohr Institute have combined two worlds—quantum physics and nano physics—which have led to the discovery of a new method for laser cooling semiconductor membranes. The cooling method works quite paradoxically by heating the material. Using lasers, researchers cooled membrane fluctuations to -269 C.
Phase-change random access memory (PCRAM) is a promising technology for next-generation non-volatile memory, but it has been limited by room temperature efficiency. A research group in Japan recently invented a variation of PCRAM that achieves a magnetoresistance effect of more than 2000% at room temperature and higher, and doesn’t require the use of magnetic elements such as cobalt and platinum.