Anthu aku America adaganiza zotolera mphamvu pa intaneti ya Zinthu kuchokera ku maginito a mawaya amagetsi apafupi

Mutu wochotsa magetsi kuchokera ku "mpweya" - kuchokera ku phokoso lamagetsi, kugwedezeka, kuwala, chinyezi ndi zina zambiri - zimadetsa nkhawa ofufuza wamba ndi anzawo ovala yunifolomu. Zomwe mwapereka pamutuwu mothandizidwa ndi asayansi kuchokera ku Pennsylvania State University. Kuchokera ku maginito a mawaya amagetsi apafupi, adatha kuchotsa magetsi ndi mphamvu ya ma milliwatts angapo, omwe ndi okwanira, mwachitsanzo, kuti agwiritse ntchito mwachindunji wotchi ya digito.

Lofalitsidwa m’magazini Energy & Environmental Science M'nkhaniyi, asayansi analankhula za kuwerengera ndi kupanga otembenuza apadera a minda ya electromagnetic kukhala magetsi. Chigawo cha migodi chimapangidwa ngati mbale yopyapyala yambiri yokhala ndi maginito osatha kumapeto kwaufulu (mbali ina ya mbaleyo imakhazikika bwino). Mbale yokha imakhala ndi piezoelectric wosanjikiza ndi wosanjikiza wa magnetostrictive zakuthupi (Fe85B5Si10 Metglas).

Magnetostrictive zinthu ndi zosangalatsa chifukwa pamene dziko maginito kusintha, voliyumu ake ndi mizere mizere kusintha. Kung'ung'udza kokwiyitsa kwa ma coils mu makadi amakanema ndi, monga lamulo, kusintha kwa maginito mu cores. M'malo osinthira maginito a mawaya amagetsi wamba omwe amakhala ndi mafupipafupi a 50 kapena 60 Hz, mbale ya Metglas imayamba kunjenjemera ndikusintha mbale ya piezoelectric yomwe imamatirapo. Current imayamba kuyenda mu netiweki yolumikizidwa ndi mbale.

Komabe, chinthu cha magnetostrictive chophatikizidwa ndi piezoelectric chimatulutsa mpaka 16% ya magetsi opangidwa ndi chinthucho. Chotulutsa chachikulu chimachokera ku kugwedezeka kwa maginito okhazikika m'munda wa electromagnetic. Amanenedwa kuti nsonga yapamwamba yodutsa chinthucho imafika 80 V m'munda wa 300 μT. Koma chinthu chamtengo wapatali kwambiri ndi chakuti chinthu chopangidwacho chikhoza kutulutsa mphamvu zokwanira kuti zithetse mwachindunji wotchi ya digito m'munda wosakwana 50 μT pamtunda wa masentimita 20 kuchokera ku waya wamagetsi.

Asayansi ochokera ku yunivesite ya Pennsylvania State adachita kafukufuku wawo pamodzi ndi ofufuza ochokera ku Virginia Tech ndi gulu la US Army Combat Capabilities Development Command.

Source: 3dnews.ru