By using pulses of light to dramatically accelerate quantum computers, University of Michigan researchers have made strides in technology that could foil national and personal security threats.
It’s a leap, they say, that could lead to tougher protections of information and quicker deciphering of hackers’ encryption codes.
A new process for adjusting the resistance of semiconductor devices by carpeting a small area of the device with tiny pits, like a yard dug up by demented terriers, may be the key to a new class of magnetic sensors, enabling new, ultra-dense data storage devices. The technique demonstrated by researchers at the National Institute of Standards and Technology (NIST)* allows engineers to tailor the electrical resistance of individual layers in a device without changing any other part of the processing or design.
Researchers at the University of Pennsylvania have developed a reliable, reproducible method for parallel fabrication of multiple nanogap electrodes, a development crucial to the creation of mass-produced nanoscale electronics.
A nanoscopic ‘”resonator”‘ that could form the building blocks forof the logic gates inside an electromechanical computer has been developed by US researchers.
Sotiris Masmanidis at the California Institute of Technology in Pasadena and colleagues suggest that computers constructed from nanoscale electromechanical components could be more efficient and robust than purely electronic computers.
The resonator consists of a piece of gallium arsenide crystal 4 micrometres long, 0.8 micrometres wide and 0.2 micrometres deep, attached to a base. One side of the crystal “beam” is doped to provide extra electrons, while the other is doped so that it lacks them. When an alternating current (AC) voltage is applied across the post, an electric field is formed across the centre of the bar. A piezoelectric effect then kicks in, causing the gallium arsenide crystal to deform. If the AC voltage has the right frequency, the bar will resonate, vibrating like a metal bar after being struck.
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Devices made from plastic semiconductors, like solar cells and light-emitting diodes (LEDs), could be improved based on information gained using a new nanoparticle technique developed at The University of Texas at Austin.
We are approaching an evolutionary event horizon, where the organic and the synthetic, the virtual and the “real”, are merging together into an operational ecology, an existence morphology for which there is no precendent in the history of which we are currently aware, catalyzed by nanotechnology
Researchers from the University of Delaware and Washington University in St. Louis have figured out how to train synthetic polymer molecules to behave–to literally “self-assemble” –and form into long, multicompartment cylinders 1,000 times thinner than a human hair, with potential uses in radiology, signal communication and the delivery of therapeutic drugs in the human body. The discovery, a fundamental new tool for nanotechnology, is reported in the Aug. 3 issue of the prestigious journal ‘Science.’