Ukuthuthukiswa okuqhubekayo kobuchwepheshe be-fiber kwenze kwaba nokwenzeka ukuhlola ububanzi obubanzi bokusetshenziswa kwezindwangu zendabuko. Emvelweni, imicu ivame ukuba nendima ekudluliseni umsindo. Ohlelweni lokuzwa komuntu, isibonelo, i-eardrum, enesibopho sokuxazulula ukungezwani kwe-acoustic impedance phakathi komoya osemseleni wendlebe noketshezi olungaphakathi endlebeni, kwenzeka ukuthi wenziwe ngamafayibha e-modulus ephezulu. Isigubhu sendlebe siguqula ukucindezela komsindo kube ukudlidliza okwenziwa emathanjeni endlebe emaphakathi, abese edluliselwa ku-cochlea engaphakathi kwendlebe. Ku-cochlea, izinyanda zezinwele ezifana nefayibha ziyaphambuka, ekugcineni ziguqule ukudlidliza komshini kube izimpawu zikagesi ezitholwa isimiso sezinzwa.

Ligqugquzelwe indlela yokuqhuba lapho uhlelo lokuzwa luguqula khona ukucindezela komsindo kube ukudlidliza kwemishini, bese kuba ukudlidliza kwemishini kube amasignali kagesi, nokubaluleka kwemicu ohlelweni lokuzwa, ithimba likaSolwazi Yoel Fink e-MIT liklame indwangu ye-acoustic . Ngokungafani nesakhiwo esiyinkimbinkimbi sezinhlangothi ezintathu sesistimu yokuzwa, indwangu iyisicaba, ehlanganisa i-matrix yendwangu enezinzwa ze-fiber ezilukelwe kuyo. I-matrix yendwangu ingaguqula kahle ingcindezi yomsindo ibe ukudlidliza kwemishini njenge-eardrum, futhi inzwa yefayibha ingaguqula ukudlidliza komshini kube amasignali kagesi njenge-cochlea.

Kutholakala ukuthi amandla okuguqula akhiqizwa ukudlidliza komshini angagxiliswa futhi asatshalaliswe ku-fiber core ngokuphumelelayo. Isakhiwo se-asymmetric se-fiber sivumela i-fiber ukuthi ikhiqize ubunzima obukhulu ngesikhathi sokuguqulwa. Ngakho-ke, ithimba locwaningo lasebenzisa ubuchwepheshe bokudweba obushisayo obusekelwe ekukhiqizeni i-fiber ukuze lenze inani elikhulu lemicu eyakhiwe ngezinto eziyisithupha zenzwa, okuhlanganisa ingqikithi eyakhiwe i-P(VDF-TrFe) kanye nezinhlayiya ze-barium piezoelectric titanate (BaTiO3) ze-ceramic, i-electrode eyakhiwe i-nano carbon powder kanye ne-polyethylene, i-electrode yethusi ye-SEBS, i-copper elastomer.

Ukuze silungise izindwangu ze-acoustic ezizwela kakhulu, siklame indwangu elukiwe ehlanganisa intambo kakotini (i-warp) kanye ne-modulus ephezulu ye-Twaron filament (i-weft), bese ilukwa ngokuqondile imicu edonsa ukushisa ibe yi-substrate yendwangu, njengokulawula kwendwangu kakotini emsulwa enosayizi ofanayo. Ekugcineni, kwatholakala ukuthi impendulo ye-acoustic yendwangu ye-Twaron/ kakotini yayiphezulu kakhulu kunaleyo yendwangu kakotini emsulwa. Ngemvamisa efanayo yomsindo, indwangu ye-Twaron/ukotini yayinemodi yokudlidliza yemishini ehlelekile, eyenga i-fiber ukuthi ikhiqize i-amplitude ephakeme yokudlidliza kanye nokuguquguquka okugoba ohlangothini olulodwa kuphela. Ngaphezu kwalokho, ngemuva kwemijikelezo eyi-10 yokugeza imishini, izakhiwo zikagesi neze-acoustic zisengagcinwa.

Uluke indwangu ye-Twaron/cotton acoustic engutsheni ehlonza ngokunembile isiqondiso somthombo womsindo. Ukuqapha okuqondiswayo kwemithombo yomsindo kungaba usizo kakhulu kubantu abagqoke izinsiza-kuzwa, kuthembise ukuqeda umsindo ongemuva ngenkathi kubavumela ukuthi bezwe kuphela imisindo endaweni ethile, kanye nabezomthetho abafuna ukuthola umthombo wesibhamu. Ngaphezu kwalokho, emkhakheni we-biomedicine, ingubo ingasebenza njenge-stethoscope, inikeze isisombululo esisha sokunethezeka, okuqhubekayo, ukuqapha kwesikhathi sangempela kanye nesikhathi eside senhliziyo yomuntu kanye nempilo yokuphefumula.

Ngaphezu kokuzwa umsindo, indwangu ingadlala nemisindo ezwakalayo. Amahembe amabili anika amandla ukuxhumana kwe-acoustic kwe-bidirectional, ne-waveform yesizinda sesikhathi esifaniswayo kanye ne-frequency spectrum phakathi kwenkulumo edlulisiwe neyamukelwe. Lokhu kusiza ekufezekeni kokuxhumana komuntu nomuntu nge-acoustic, futhi kunethuba elihle lokufaka isicelo kubantu abayizithulu noma abangezwa kahle, ukuxhumana okufihliwe, ngisho nokuxhumana ngaphansi kwamanzi.

(Umthombo: I-akhawunti Esemthethweni Yomholi Wezindwangu Wase-China)