Why lithium-ion-batteries fail

Materials in lithium ion battery electrodes expand and contract during charge and discharge. These volume changes drive particle fracture, which shortens battery lifetime. A group of ETH scientists together with colleagues ...

IEEE 802.11ad approval steps up marketplace WiGig

(Phys.org)—IEEE has adopted a new standard, 802.11ad, which marks the advent of 7Gbps wireless. The newly approved standard will be commercially known as WiGig, and the technology behind WiGig is seen as a step forward ...

Silicon nanophotonics: Using light signals to transmit data

(Phys.org)—IBM announced today a major advance in the ability to use light instead of electrical signals to transmit information for future computing. The breakthrough technology – called "silicon nanophotonics" – allows ...

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