Cov txheej txheem tshiab ob-photon polymerization tau tsim los ntawm cov kws tshawb fawb ntawm Purdue University hauv Tebchaws Meskas. Lub tshuab no ntse ua ke ob lub lasers, nrog kev pab los ntawm 3D tshuab luam ntawv, nyob rau hauv cov ntaub ntawv ntawm femtosecond laser zog txo los ntawm 50 feem pua, luam ntawv complex high-resolution 3D qauv. Nws pab txo tus nqi ntawm cov txheej txheem 3D luam ntawv siab, yog li nthuav dav ntxiv rau ntau yam kev siv. Cov ntawv tshawb fawb tau luam tawm nyob rau hauv qhov teeb meem tshiab kawg ntawm phau ntawv xov xwm Optics Express.
Ob-photon polymerization yog ib qho kev tsim khoom siv thev naus laus zis uas ua haujlwm rau kev siv femtosecond lasers los luam cov ntaub ntawv hauv 3D meej. Txawm hais tias cov thev naus laus zis zoo heev ntawm kev tsim cov kev daws teeb meem siab microstructures, nws cov nqi siab tau ua ib txoj hauv kev rau nws txoj kev siv dav.
Nyob rau hauv lub teeb ntawm no, pab neeg muaj tswv yim ua ke ib tug kuj tsis tshua muaj nqi laser uas emits pom lub teeb nrog ib tug femtosecond laser uas emits infrared pulses, txo lub femtosecond laser hwj chim los ntawm 50 feem pua. Txoj hauv kev tshiab no ua rau txo tus nqi luam tawm ntawm tus kheej.
Txoj kev tshiab no sib txuas ua ke ib leeg-photon nqus ntawm 532-nanometer nanosecond laser nrog ob-photon absorption mus kom ze ntawm ib 800-nanometer femtosecond laser. Txhawm rau kom ua tiav qhov zoo sib npaug ntawm ob lub laser luam ntawv, pab pawg kuj tau tsim cov qauv lej tshiab kom nkag siab tob dua ntawm cov txheej txheem photochemical koom nrog thiab suav cov txiaj ntsig zoo ntawm ob-photon thiab ib-photon excitation txheej txheem, yog li ua kom ntseeg tau. tias cov txiaj ntsig luam ntawv zoo tshaj plaws tseem tuaj yeem ua tiav ntawm qis femtosecond laser powers.
Cov txiaj ntsig kev sim qhia tau hais tias rau cov qauv 2D, txoj kev tshiab txo lub zog xav tau los ntawm femtosecond laser los ntawm 80 feem pua; rau 3D qauv, nws raug txo los ntawm 50 feem pua.
Pab neeg no tau hais tias qhov kev daws teeb meem siab tshaj plaws 3D luam ntawv thev naus laus zis muaj ntau qhov kev cia siab, suav nrog tab sis tsis txwv rau kev tsim cov khoom siv hluav taws xob 3D, kev txhim kho micro-robots hauv biomedical field, thiab kev tsim kho 3D qauv lossis scaffolds rau cov ntaub so ntswg engineering. .
Femtosecond laser 3D luam ntawv, luv luv, yog cov tshuaj tiv thaiv photochemical uas tshwm sim hauv lub ntim me me los tsim cov qauv 3D zoo. Nws yog ib qho kev siv thev naus laus zis heev hauv kev tsim khoom siv niaj hnub no, tab sis nws muaj kev txwv ntawm kev luam ntawv ceev thiab peev nyiaj txiag. Tam sim no, pab pawg tau hla tus nqi thaiv los ntawm kev luam ntawv cov qauv kev daws teeb meem ntawm ib nrab ntawm lub zog. Qhov tseem ceeb tshaj plaws, cov cuab yeej tshiab no tseem tuaj yeem ua ke tau yooj yim hauv femtosecond laser 3D tshuab luam ntawv uas twb muaj lawm, ua rau muaj kev paub sai ntawm cov ntawv thov hauv biomedicine, micro-robotics, micro-optics, thiab ntau lwm yam.
