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Graphene tso cai rau koj sib cuag lo ntsiab muag mus saib cov duab Infrared

Nws suab zoo li ib tug tub sab nyiag nkab, thiab koj tuaj yeem pom cov duab infrared li koj muab tso rau hauv ib kab kev sib tsoo ntawm lo ntsiab muag. Cov kws tshawb fawb ntawm University of Michigan muab lawv cov tsom iav los ua qhov tseeb, siv graphene los tsim cov ntiv tes ntaiv cov duab ntiv tes tsis muaj qhov xav tau rau cov cua txias. Vim tias nws loj me me, lub cev nyhav, nws muaj peev xwm nkag tau rau hauv kev sib txuas lus los yog xov tooj ntawm tes, hauv cov tub rog, kev ruaj ntseg, kev kho mob thiab lwm qhov chaw muaj ntau hom kev siv.

Txoj kev tshawb no tau luam tawm nyob rau hauv phau ntawv journal Nature Nanotechnology. Infrared wavelength ntawm 760 nm mus rau 1 mm, yog lub qhov ntev tshaj qhov teeb liab dua ntawm qhov pom, muab faib ua ntej ntiv taw, nruab nrab infrared thiab sab qus infrared peb hom. Ob leeg IR thiab cov infrared sensors feem ntau yuav tsum tau ua haujlwm ntawm qhov tsawg kawg kub. Chong (Zhaohui Zhong), tus pab cuam xib fwb ntawm hluav taws xob engineering thiab computer science hauv University of Michigan, thiab nws pab neeg tau tsim cov txheej txheem ntawm hluav taws xob cov teeb tsa los ntawm graphene, teeb ib txheej insulating ntawm ob lub nrig nrog cov hluav taws xob tam sim no.

Thaum lub teeb hits lub sab saum toj graphene, cov ntaus ntawv tso tawm electrons thiab tsim ib qho zoo ntawm lub qhov. Tom qab ntawd, nyob rau hauv cov txiaj ntsim zoo ntawm quantum tunneling, electrons kis tau los ntawm nruab nrab insulating txheej thiab mus txog hauv qab ntawm graphene txheej. Nyob rau ntawm qhov no, qhov zoo ntawm lub qhov tso rau ntawm daim duab sab nrauv yuav tsim ib qho hluav taws xob thiab cuam tshuam rau qhov sib tw ntawm lub graphene sab saud. Los ntawm kev ntsuas qhov kev hloov ntawm qhov tam sim no, qhov ci ntawm lub teeb taws irradiated rau hauv daim duab sab nraud tuaj yeem raug kev cuam tshuam. Chong hais tias tus txheej txheem tshiab ua ntej pub lub rhiab ntawm ob qho tib si IR thiab infrared infrared sensors mus rau ib qhov siab tshiab uas yuav piv rau ib qho infrared sensor uas yuav tsum tau muaj cua txias los khiav.


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