https://www.youtube.com/watch?v=_-kkkNdbils
In previous 2016 , Nelson Sepulveda , a Michigan State University Associate Professor of Electrical and Computer Engineering , and his teamrevealed a compromising , film - like equipment called a biocompatible ferroelectret nanogenerator — or FENG , for little — that could generate electricity and index other simple electronics as it was folded and change form .
Made from ion - packed bed of atomic number 14 , silver , and polymide ( similar to the artificial material nylon ) covered with a foam - like cloth called polypropylene ferroelectret , as the FENG film is compact it create electrical push . A keyboard made of FENG worked without having to draw any power from a computer , and the MSU researchers visualise their material being used in garment that could generate power for charging gadgets as people but incite about .
But as the team at MSU continued to develop the FENG technology , they discovered it was so raw that even subtle deformations made by sound wafture would produce an electric charge . Asdetailed in a studypublished this week in Nature Communications , this mean that the ultra - thin film could also serve as a mike , one so tender to the human vocalism that it would be almost impossible to gull a voice - realisation security system that used the technology .
And because a mike is just a verbaliser working in reversal , the researchers also showed that the FENG film could just as effectively convert electrical energy into mechanical free energy . The material was embedded into a simple flag and when fed a signal from an iPad passed through an amplifier , the fabric reproduced the sound with remarkable clarity .
So one day , instead of having to bring a megaphone to a rally , the protest sign you ’re carrying could be used to amplify your chant with the FENG technology imbed . This thin film could also lead to further improvement in mobile equipment , replacing traditional speaker and mike components with a single mental faculty that performs both duties more efficiently to help go your gimmick ’s bombardment life-time . And even if your smartphone does murder that critical 10 percent power bull’s eye , perhaps one sidereal day your FENG - equipped jacket will speedily charge it back up during a promenade .
[ Nature CommunicationsviaMichigan State University ]
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