Itsinda ry'Abanyamerika ritanga igitekerezo cy'uburyo bushya bwo gutunganya imirasire ya microdisk

Itsinda ry’abashakashatsi bo mu Ishuri ry’Ubuganga rya Harvard (HMS) n’Ibitaro Bikuru bya MIT bavuga ko bageze ku ihinduka ry’umusaruro wa laser ya microdisk bakoresheje uburyo bwa PEC etching, bigatuma isoko nshya ya nanophotonics na biomedicine "itanga icyizere."

(Umusaruro wa laser ya microdisk ushobora guhindurwa hakoreshejwe uburyo bwa PEC etching)

Mu mirima yananofotonikin'ubuvuzi bw'ibinyabuzima, microdiskimirasire ya laserna nanodisk lasers byatangiye kuba byizaamasoko y'urumurin'ibipimo. Mu bikorwa bitandukanye nko gutumanaho kuri fotoni kuri on-chip, kwishushanya kuri on-chip, kumenya biochemical, no gutunganya amakuru ya fotoni ya quantum, bigomba kugera ku musaruro wa laser mu kumenya uburebure bw'umurambararo n'ubuziranenge bwa ultra-narrow band. Ariko, biracyari ingorabahizi gukora ibyuma bya microdisk na nanodisk bya uburebure bw'umurambararo nyabwo ku rwego runini. Uburyo bwo gukora nanofabrication buriho butanga ubwinshi bw'umurambararo wa disiki, bigatuma bigorana kubona uburebure bw'umurambararo mu gutunganya no gukora uburebure bwa laser. Ubu, itsinda ry'abashakashatsi bo mu Ishuri ry'Ubuganga rya Harvard n'Ikigo cya Wellman cy'Ibitaro Bikuru bya Massachusetts kuriUbuvuzi bw'amatwi bw'ikoranabuhangayateguye uburyo bushya bwo gushushanya hakoreshejwe optochemical (PEC) bufasha gutunganya neza uburebure bw'umurambararo wa laser ya microdisk hakoreshejwe uburyo bworoshye bwo gupima ubuziranenge bwa subnanometer. Ubu bushakashatsi bwasohotse mu kinyamakuru Advanced Photonics.

Gushushanya hakoreshejwe ikoranabuhanga rya fotochemical
Amakuru avuga ko uburyo bushya bw'ikipe butuma habaho gukora lazeri za micro-disk na nanodisk laser arrays zifite uburebure bw'umurambararo buhamye kandi bwagenwe mbere y'igihe. Ipfundo ry'iyi ntambwe ni ugukoresha PEC etching, itanga uburyo bwiza kandi bushobora kwaguka bwo kunoza uburebure bw'umurambararo wa lazeri ya microdisk. Mu bisubizo byavuzwe haruguru, itsinda ryabonye neza indium Gallium arsenide phosphating microdisks zitwikiriwe na silica ku miterere y'inkingi ya indium phosphide. Hanyuma bahinduye uburebure bw'umurambararo wa lazeri y'izi microdisks neza neza ku gaciro kagenwe bakora etching ya photochemical mu gisubizo cya aside sulfurike.
Banasuzumye uburyo n'imikorere y'ibishushanyo mbonera byihariye bya photochemical (PEC). Amaherezo, bimuriye microdisk array ikoze mu buryo bw'uburebure kuri polydimethylsiloxane substrate kugira ngo hakorwe uduce twa laser twigenga kandi twihariye dufite uburebure butandukanye bwa laser. Microdisk yavuyemo igaragaza bandwidth ya ultra-wideband yoherezwa muri laser, hamwe n'laserku nkingi iri munsi ya 0.6 nm n'agace kari ukwako kari munsi ya 1.5 nm.

Gufungura amarembo ku bikorwa by’ubuvuzi
Ibi bitanga umusaruro bifungura amarembo ku buryo bushya bwa nanophotonics na biomedical. Urugero, laser za microdisk zigenga zishobora gukora nk'imirongo ya fiziki-optical ku bipimo bitandukanye bya biyoloji, bigatuma hashyirwaho ibimenyetso by'ubwoko bwihariye bw'ingirabuzimafatizo no kwibasira molekile runaka mu isesengura rya multiplex. Gushyira ibimenyetso ku bwoko bwihariye bw'ingirabuzimafatizo ubu bikorwa hakoreshejwe ibimenyetso bisanzwe, nka fluorophores organic, dots quantum, na fluorescent beads, bifite ubugari bwagutse bw'ibyuka. Bityo, ubwoko buke bw'ingirabuzimafatizo ni bwo bushobora gushyirwaho ibimenyetso icyarimwe. Mu buryo bunyuranye, urumuri rwa ultra-narrow band rwa laser ya microdisk ruzashobora kumenya ubwoko bwinshi bw'ingirabuzimafatizo icyarimwe.
Itsinda ryagerageje kandi rigaragaza neza uduce twa laser ya microdisk twahinduwe neza nk'ibipimo by'ingirabuzimafatizo, ribikoresha mu gushyira amazina ku tunyangingo twa epithelial twa MCF10A twavumbuwe mu mabere. Hamwe n'ingufu zabyo za ultra-wideband, izi laser zishobora guhindura uburyo bwo kumenya biosensing, hakoreshejwe uburyo bwa biomedical na optical bwamenyekanye nka cytodynamic imaging, flow cytometry, na multi-omics analysis. Ikoranabuhanga rishingiye kuri PEC etching rigaragaza iterambere rikomeye muri microdisk lasers. Uburyo bwo kwaguka bw'ubu buryo, hamwe n'ubuhanga bwabwo bwa subnanometer, bifungura amahirwe mashya yo gukoresha lasers nyinshi muri nanophotonics na biomedical devices, ndetse na barcodes ku tunyangingo twihariye n'utunyangingo tw'isesengura.