US Re­searchers In­vent First Bat­tery-Free Cell­phone

The Day After - - COFFEE HOUSE -

Re­searchers at the Univer­sity of Washington (UW) have in­vented a phone that har­vests the few mi­crowatts of power it re­quires from ei­ther am­bi­ent ra­dio sig­nals or light and re­quires no bat­ter­ies. De­tailed in a pa­per pub­lished in the Pro­ceed­ings of the As­so­ci­a­tion for Com­put­ing Ma­chin­ery on In­ter­ac­tive, Mo­bile, Wear­able and Ubiq­ui­tous Tech­nolo­gies, the bat­tery-free cell­phone marks a ma­jor leap for­ward in mov­ing beyond charg­ers, cords and dy­ing phones, Xinhua news agency re­ported.

The team of com­puter sci­en­tists and elec­tri­cal engi­neers elim­i­nated a power-hun­gry step in cel­lu­lar trans­mis­sions, namely con­vert­ing ana­log sig­nals that con­vey sound into dig­i­tal data that a phone can un­der­stand, which con­sumes so much en­ergy that it’s been im­pos­si­ble to de­sign a phone that can rely on am­bi­ent power sources.

“The CBI has filed a per­sonal FIR on him. There­fore, we ex­pect that he would present a point-wise re­sponse on the case. We will not com­pro­mise with our pol­icy of zero tol­er­ance on cor­rup­tion

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