I-Waveguide eyakhiwe yi-tungsten disulfide yathuthukiswa onjiniyela baseNyuvesi yaseCalifornia San Diego futhi iyizendlalelo ezintathu kuphela zama-athomu amancane futhi iyisisetshenziswa sokubona esincane kunazo zonke emhlabeni! Abacwaningi bashicilele abakutholile ngo-Aug 12 ngoI-Nanotechnology yemvelo.

I-waveguide entsha, icishe ibe yi-6 angstrom (1 angstrom = 10^-10amamitha), izacile izikhathi ezingu-10,000 kunefayibha ejwayelekile, futhi izacile izikhathi ezingaba ngu-500 kunedivayisi ye-on-chip optical kusekethe ehlanganisiwe yezithombe. Iqukethe ungqimba olulodwa lwe-tungsten disulfide elenga ohlakeni lwe-silicon (ungqimba lwama-athomu e-tungsten luhlanganiswe phakathi kwama-athomu amabili esibabule), futhi ungqimba olulodwa lwakha ikristalu ye-photonic kusukela ochungechungeni lwamaphethini e-nanopore.

Le crystal yesendlalelo esisodwa ikhethekile ngoba isekela amapheya e-electron-hole abizwa ngokuthi ama-exciton, ekamelweni lokushisa, lawa ma-exciton akhiqiza impendulo eqinile ye-optical kangangokuthi inkomba ye-refractive ye-crystal cishe iphindwe kane inkomba ye-refractive emoyeni ezungeze indawo yayo. Ngokuphambene, enye into enogqinsi olufanayo ayinayo inkomba ephezulu ye-refractive. Njengoba ukukhanya kuhamba ngekristalu, kushuthwa ngaphakathi futhi kuqhutshwe eduze kwendiza ngokubonakala okuphelele kwangaphakathi.

Ukukhanya kweziteshi ze-waveguide ku-spectrum ebonakalayo kungesinye isici esikhethekile. I-Waveguiding ike yaboniswa ngaphambilini nge-graphene, nayo ezacile nge-athomu, kodwa ngamaza amaza e-infrared. Ithimba libonise okokuqala lihamba ngezinyawo endaweni ebonakalayo. Izimbobo ezinama-nanosized ezifakwe ku-crystal zivumela ukukhanya okuthile ukuthi kuhlakazeke ngendlela eqondile endizeni ukuze ibonwe futhi iphenywe. Lolu xhaxha lwezimbobo lukhiqiza ukwakheka ngezikhathi ezithile okwenza ikristalu ibe kabili njengeresonator futhi.

Lokhu kuphinda kuyenze ibe i-thinnest Optical resonator yokukhanya okubonakalayo okungake kuboniswe ngokuhlolwa. Le sistimu ayithuthukisi kuphela ngokuzwakalayo ukusebenzisana kwe-light-matter, kodwa futhi isebenza njenge-coupler ye-grating yohlelo lwesibili ukuhlanganisa ukukhanya ku-optical waveguide.

Abacwaningi basebenzisa izindlela ezithuthukisiwe ze-micro- kanye ne-nanofabrication ukuze bakhe i-waveguide. Ukwakha isakhiwo kwakuyinselele ngokukhethekile. Izinto zincane nge-athomu, ngakho abacwaningi bakha inqubo yokuyimisa ohlakeni lwe-silicon bese beyiphethini kahle ngaphandle kokuyiphula.

I-waveguide ye-tungsten disulfide iwubufakazi bomqondo wokwehlisa idivayisi yokubona kumasayizi angama-oda obukhulu obuncane kunamadivayisi anamuhla. Kungaholela ekuthuthukisweni kokuminyana okuphezulu, umthamo ophakeme wama-photonic chips.