Power/Performance Bits: Nov. 15


Another record-breaking tandem perovskite solar cell University of California, Berkeley, and Lawrence Berkeley National Laboratory scientists report a new design for perovskite solar cells that achieves an average steady-state efficiency of 18.4%, with a high of 21.7% and a peak efficiency of 26%. "This has a great potential to be the cheapest photovoltaic on the market, plugging into any... » read more

Power/Performance Bits: July 26


Flexible MRAM Researchers from the National University of Singapore, Yonsei University, Ghent University and Singapore's Institute of Materials Research and Engineering embedded a magnetic memory chip on a plastic material, flexible enough to be bent into a tube. The new device operates on magnetoresistive random access memory (MRAM), which uses a magnesium oxide (MgO)-based magnetic tunn... » read more

Power/Performance Bits: Feb. 2


Single electron transistors A group coordinated by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) is setting out on a four year program to develop single electron transistors fully compatible with CMOS technology and capable of room temperature operation. The single electron transistor (SET) switches electricity by means of a single electron. The SET is based on a quantum dot (consisting... » 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: April 21


Harvesting more electromagnetic energy Researchers from the University of Waterloo in Canada showed for the first time that it's possible to collect essentially all of the electromagnetic energy that falls onto a surface. Their approach involves the use of metamaterials that can be tailored to produce media that neither reflects nor transmits any power, enabling full absorption of incident w... » read more