Ib qho khoom siv hluav taws xob hnav tau raug tshawb pom uas tuaj yeem txuas rau ib tus neeg lub cev thiab ua tus hais lus thiab microphone
Kev tshawb nrhiav thiab tsim cov khoom siv hluav taws xob hnav uas tuaj yeem hnav los ntawm cov neeg siv khoom ntawm lawv lub cev tau nce siab hauv ntau xyoo dhau los. Xws li cov cuab yeej siv tau los yog khoom siv tuaj yeem txuas nrog tib neeg daim tawv nqaij thiab muaj peev xwm, piv txwv li, taug qab kev noj qab haus huv lossis kev nyab xeeb ntawm tus kheej. Xws li 'kev noj qab haus huv lossis kev ua haujlwm trackers' thiab smartwatches tam sim no tsim los ntawm ntau tus neeg siv thev naus laus zis hauv kev ua lag luam thiab lawv cov koob meej tau nce. Lawv muaj me me sensors uas tso cai rau syncing nrog mobile pab kiag li lawm. Cov no tau dhau los ua ib feem ntawm lub neej niaj hnub ntawm tib neeg.
Ib tus hais lus thiab microphone uas tuaj yeem hnav!
Cov kws tshawb fawb los ntawm UNIST's School of Energy thiab Chemical Engineering tau tsim ib qho kev siv thev naus laus zis tshiab rau tib neeg cov tawv nqaij uas dhau los ua tus hais lus 'stick-on' thiab microphone. Cov khoom no yog ultrathin, pob tshab hybrid nanomembrane (tsawg dua 100 nanometers) uas yog conductive nyob rau hauv cov xwm. Qhov no nanomembrane tuaj yeem hloov mus ua ib qho loudspeaker uas tuaj yeem txuas rau txhua yam khoom siv los tsim suab. Cov nanomembrane yog qhov yooj yim nyias nyias nyias txheej nrog nanoscale thickness. Lawv yog cov hloov tau yooj yim, ultralight hauv qhov hnyav thiab muaj qhov ua tau zoo dua vim tias lawv tuaj yeem txuas ncaj qha rau txhua hom ntawm qhov chaw. Cov niaj hnub muaj nanomembrane yog qhov tsim kua muag thiab tsis muaj hluav taws xob conductivity thiab qhov no yog vim li cas cov thev naus laus zis tshiab no tau txwv. Txhawm rau hla cov kev txwv no, cov kws tshawb fawb tau kos cov nyiaj nanowire matrix hauv pob tshab polymer nanomembrane. Xws li ib tug hybrid ces muaj cov cuab yeej ntxiv ntawm kev ua ib feem ntawm kev ua ultrathin, pob tshab thiab tag nrho yog unobtrusive nyob rau hauv tsos. Qhov nyias nyias yog qhov zoo tshaj plaws thiab txhais tau tias nws yog 1000 zaug nyias dua li ib daim ntawv! Cov khoom ntxiv pab txhawb kev sib cuam tshuam zoo nrog cov npoo nkhaus thiab dynamic yam tsis muaj rupturing los yog tawg. Siv xws li hybrid nanomembrane uas muaj qhov zoo tshaj plaws kho qhov muag, hluav taws xob, thiab cov khoom siv tshuab ua rau cov kws tshawb fawb los tsim cov suab nrov thiab microphones uas tuaj yeem txuas rau ntawm daim tawv nqaij.
Tus neeg hais lus tau siv AC hluav taws xob hluav taws xob los ua kom sov cov nyiaj nanowire matrix uas tom qab ntawd tsim cov suab nthwv dej (thermoacoustic suab) vim qhov kub thiab txias oscillations nyob rau hauv ib puag ncig huab cua. Rau kev ua qauv qhia, lawv siv lub microphone coj mus muag los ntes thiab kaw lub suab. Cov cuab yeej hais lus txuas rau ntawm daim tawv nqaij ua si zoo thiab lub suab tau yooj yim pom tau. Txhawm rau ua haujlwm raws li lub microphone, hybrid nanomembrane tau muab tso rau ntawm cov yeeb yaj kiab elastic (micropatterned polydimethylsiloxane) nrog cov qauv me me hauv cov khoom sib tsoo zoo li cov qauv. Nws tuaj yeem ntes lub suab thiab kev vibration ntawm lub suab qaum nrog precision. Qhov no tshwm sim vim hais tias ntawm lub triboelectric voltage uas yog generated thaum lub sij hawm sib cuag nrog cov elastic films. Qhov no kuj tau xyaum sim thiab ua haujlwm zoo.
Xws li daim ntawv-nyias, stretchable, pob tshab daim tawv nqaij-txuas tshuab uas hloov cov tawv nqaij ntawm tib neeg mus rau hauv lub suab nrov lossis lub microphone yog qhov txaus nyiam rau cov neeg siv khoom rau kev ua si. Cov thev naus laus zis no kuj tseem tuaj yeem siv tau hauv kev lag luam. Piv txwv li, kev tsim lub microphone tuaj yeem hloov kho los siv los qhib lub suab-activated kev ruaj ntseg systems rau smartphones lossis computers. Nws tuaj yeem siv rau qhov tsis hnov lus thiab hais lus tsis zoo, siv rau hauv cov sensors thiab cov khoom siv kho mob tsis haum. Rau kev lag luam siv cov cuab yeej siv tshuab ua haujlwm ntev thiab kev ua haujlwm yuav tsum tau txhim kho. Txoj kev tshawb no tau teeb tsa txoj hauv kev rau tiam tshiab ntawm cov khoom siv coj los siv tau thiab cov khoom siv. Kev txhawj xeeb txog kev nyab xeeb rau cov khoom siv hnav zoo li no tseem nyob. Txawm hais tias cov ntaub ntawv tshawb fawb tsawg heev muaj los ua pov thawj qhov teeb meem ntawm cov khoom siv no, nws paub zoo tias cov cuab yeej no tawm hluav taws xob, tshwj xeeb tshaj yog cov xov tooj ntawm tes thiab kev sib txuas wi-fi. Nws yog hais txog cov khoom siv hluav taws xob no hnav kom lawv nyob rau hauv kev sib cuag nrog peb lub cev. Muaj peev xwm tshwm sim uas txuas ntxiv raug los ntawm cov cuab yeej no tuaj yeem ua rau muaj kev phom sij rau tib neeg mus ntev. Kev paub ntau ntxiv yog xav tau ob qho tib si ntawm cov tuam txhab tsim khoom thiab cov neeg siv khoom txog seb cov khoom siv no puas tau tsim los ntawm kev ua raws li tag nrho cov txheej txheem kev nyab xeeb kom raug.
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Qhov (s)
Kang S et al. 2018. Transparent and conductive nanomembrane with orthogonal silver nanowire arrays for skin-attachable loudspeakers and microphones. Kev Txhawb Kev Tshawb Fawb. 4 (8).
https://doi.org/10.1126/sciadv.aas8772
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