Chikwata chekuAmerica chiri kupa nzira itsva yekugadzirisa microdisk lasers

Chikwata chevaongorori vanobva kuHarvard Medical School (HMS) neMIT General Hospital vanoti vakwanisa kugadzirisa kubuda kwe microdisk laser vachishandisa nzira yePEC etching, zvichiita kuti pave ne "promising" itsva ye nanophotonics uye biomedicine.

(Kubuda kwe microdisk laser kunogona kugadziriswa nenzira yePEC etching)

Muminda yenanophotonicsuye biomedicine, microdisklasersuye nanodisk lasers zvave zvinovimbisamanyuko echiedzauye ma probes. Mumashandisirwo akasiyana-siyana akadai se on-chip photonic communication, on-chip bioimaging, biochemical sensing, uye quantum photon information processing, vanofanirwa kuwana laser output mukuona wavelength uye ultra-narrow band accuracy. Zvisinei, zvichiri kuoma kugadzira microdisk uye nanodisk lasers yeiyi chaiyo wavelength pamwero mukuru. Maitiro ekugadzira nanofabrication aripo anounza randomness ye disc diameter, izvo zvinoita kuti zviome kuwana set wavelength mu laser mass processing uye production. Iye zvino, timu yevaongorori vanobva kuHarvard Medical School neMassachusetts General Hospital's Wellman Center forMushonga weOptoelectronicyakagadzira nzira itsva yekucheka maoptochemical (PEC) inobatsira kugadzirisa marefu elaser e microdisk laser nemazvo ne subnanometer accuracy. Basa iri rakaburitswa mujenari reAdvanced Photonics.

Kucheka kwe Photochemical
Mishumo inoti nzira itsva yechikwata ichi inogonesa kugadzirwa kwema micro-disk lasers nema nanodisk laser arrays ane ma emission wavelengths chaiwo, akatarwa kare. Chinhu chikuru chekubudirira uku kushandisa PEC etching, iyo inopa nzira inoshanda uye inokwenenzverwa yekugadzirisa wavelength ye microdisc laser. Mumhedzisiro iri pamusoro, chikwata ichi chakabudirira kuwana indium Gallium arsenide phosphating microdisks yakafukidzwa ne silica pa indium phosphide column structure. Vakazogadzirisa wavelength ye laser yema microdisks aya kusvika pahuwandu hwakatarwa nekuita photochemical etching mu diluted solution ye sulfuric acid.
Vakaongororawo mashandiro uye mashandiro emifananidzo chaiyo ye photochemical (PEC). Pakupedzisira, vakatamisa microdisk array yakagadziriswa urefu hwewavelength kuenda ku polydimethylsiloxane substrate kuti vagadzire zvidimbu zve laser zvakazvimiririra, zvakaparadzana zvine mawavelength akasiyana e laser. Microdisk inobuda inoratidza bandwidth ye ultra-wideband ye laser emission, inelaserpakoramu iri pasi pe0.6 nm uye chidimbu chakaparadzaniswa chiri pasi pe1.5 nm.

Kuvhura mukana wekushandisa mishonga yekurapa
Mhedzisiro iyi inovhura mukana wekushandisa nanophotonics itsva uye biomedical. Semuenzaniso, ma microdisk lasers akazvimirira anogona kushanda se physico-optical barcodes emhando dzakasiyana dzebiological samples, zvichigonesa kunyora mazita emhando dzemasero chaiwo uye kunangwa kwemamorekuru chaiwo mukuongorora kwe multiplex. Kunyora mazita emhando yemasero pari zvino kuri kuitwa uchishandisa ma biomarkers akajairwa, akadai se organic fluorophores, quantum dots, uye fluorescent beads, ane wide emission linewidths. Saka, mhando shoma dzemasero chaiwo dzinogona kunyorwa mazita panguva imwe chete. Kusiyana neizvi, ultra-narrow band light emission ye microdisk laser ichakwanisa kuziva mhando dzakawanda dzemasero panguva imwe chete.
Chikwata chakaedza uye chakabudirira kuratidza zvidimbu zve microdisk laser zvakagadziriswa nemazvo se biomarkers, vachizvishandisa kunyora mazita emasero e epithelial emazamu akakura MCF10A. Nekubuda kwawo kwe ultra-wideband, ma laser aya anogona kuchinja biosensing, achishandisa nzira dzakasimbiswa dze biomedical uye optical dzakadai se cytodynamic imaging, flow cytometry, uye multi-omics analysis. Tekinoroji iyi yakavakirwa paPEC etching inoratidza kufambira mberi kukuru mu microdisk lasers. Kukura kwenzira iyi, pamwe nekunyatsojeka kwayo kwe subnanometer, kunovhura mikana mitsva yekushandisa ma lasers akawanda mu nanophotonics ne biomedical devices, pamwe ne barcodes dzehuwandu hwemasero chaiwo uye ma analytical molecules.