Power/Performance Bits: Aug. 4


Superfast fluorescence Duke University researchers developed an ultrafast light-emitting device, pushing semiconductor quantum dots to emit light at more than 90 gigahertz. This device could one day be used in optical computing chips or for optical communication between traditional electronic microchips. The new speed record was set using plasmonics. When a laser shines on the surface of ... » read more

System Bits: April 7


Ultra-efficient magnetic-field detector In a development that could lead to miniaturized, battery-powered devices for medical and materials imaging, contraband detection, and even geological exploration, MIT researchers have developed a new, ultrasensitive magnetic-field detector they say is 1,000 times more energy-efficient than its predecessors. Magnetic-field detectors, or magnetometers,... » read more

System Bits: Feb. 17


Can you hear light? Silicon photonics has gained increasing attention as a key driver of lab-on-a-chip biosensors and of faster-than-electronics communication between computer chips. The technology builds on tiny structures known as silicon photonic wires. The wires work because light moves slower in the silicon core than in surrounding air and glass. Thus, the light is trapped inside the wire... » read more

Power/Performance Bits: Feb. 10


Solar power technology progresses at a snappy pace and the diversity of approaches keeps expanding. In this edition, investigations in two aspects of solar energy design: understanding a potential solar cell material and a design to make those we use now more effective. Unravelling the peculiarities of nanocrystals Researchers at ETH Zurich conducted an extensive study of nanocrystal ... » read more

Power/Performance Bits: Jan. 13


Glass instead of crystals Since today's lithium-ion batteries are not good enough if our future energy system is to rely on electrical power, researchers around the world are continually looking to improve capacity and energy density. To this end, ETH Zurich researchers have developed a type of glass that can be used as an electrode material in lithium-ion batteries. ETH researchers discove... » read more

System Bits: Oct. 14


Exotic states of light and matter In research that merges two areas that have only been studied separately, ETH researchers are studying solid-state physics and quantum optics as a potential first step toward quantum computing. Specifically, the physicists are looking between tiny mirrors to a special layer of the semiconductor material gallium arsenide, prepared in such a way that the elec... » read more

System Bits: May 13


Bringing hyperbolic metamaterials closer to reality Purdue Researchers have taken a step toward practical applications for hyperbolic metamaterials, which are ultra-thin crystalline films that could bring optical advances for microscopes, quantum computers and high-performance solar cells. Optical metamaterials harness clouds of electrons called surface plasmons to manipulate and control li... » read more

Power/Performance Bits: April 22


Plasmonics could improve solar performance, data storage According to researchers at Purdue University, plasmonic metamaterials that operate at high temperatures could significantly improve solar cell performance and make advanced computer data storage technology possible that uses heat to record information on a magnetic disk. These materials could make it possible to harness clouds of ele... » read more

System Bits: March 11


Colored diamonds: a superconductor’s best friend Researchers from the University of California, Berkeley and Ben-Gurion University of the Negev in Israel and UCLA have figured out that colored diamonds can measure the tiny magnetic fields in high-temperature superconductors, providing a new tool to probe these much ballyhooed but poorly understood materials. Diamond sensors will give us m... » read more

System Bits: Jan. 14


Fastest organic transistor Research teams from the University of Nebraska-Lincoln and Stanford University have worked together to produce what they believe are the world’s fastest thin-film organic transistors, proving that this experimental technology has the potential to achieve the performance needed for high-resolution television screens and similar electronic devices. The researchers sa... » read more

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