Manufacturing Bits: Aug. 2

CMP replacement? For years, chipmakers have used chemical-mechanical-polishing (CMP) tools to smooth or polish the surface of a wafer. CMP works, but the technology is time-consuming and expensive. CMP can also leave unwanted residual patterns and defects near the surface. In response, Russia’s National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) has help... » read more

Power/Performance Bits: June 7

Tiny lasers on silicon A group of scientists from Hong Kong University of Science and Technology, the University of California, Santa Barbara, Sandia National Laboratories, and Harvard University were able to fabricate tiny lasers directly on silicon. To do this, they first had to resolve silicon crystal lattice defects to a point where the cavities were essentially equivalent to those gr... » read more

Power/Performance Bits: Nov. 3

Lithium-air batteries gain ground Scientists at the University of Cambridge have developed a working laboratory demonstration of a lithium-oxygen battery which has very high energy density, is more than 90% efficient, and can be recharged more than 2000 times. Their demonstrator relies on a highly porous, 'fluffy' carbon electrode made from graphene (comprising one-atom-thick sheets of ca... » read more

Power/Performance Bits: Aug. 18

Reducing crosstalk with tantalum oxide memories Scientists at Rice University created a solid-state memory technology that allows for high-density storage with a minimum incidence of crosstalk errors. The memories are based on tantalum oxide. Applying voltage to a 250-nanometer-thick sandwich of graphene, tantalum, nanoporous tantalum oxide and platinum creates addressable bits where the ... » read more