I-Waveguide eyenziwe yi-tungsten disulfide iphuhliswe ziinjineli zeDyunivesithi yaseCalifornia San Diego kwaye zimigangatho emithathu kuphela yee-athom ezibhityileyo kwaye sesona sixhobo sibonakalayo sincinci emhlabeni! Abaphandi bapapashe iziphumo zabo nge-12 ka-AgastiUbume beNanotechnology.

I-waveguide entsha, imalunga ne-6 angstrom (1 angstrom = 10^-10iimitha), amaxesha angama-10,000 amancinci kunefayibha eqhelekileyo, kwaye malunga namaxesha angama-500 amancinci kunesixhobo se-optical on-chip kwisekethe edibeneyo yefotonic. Iqulathe umaleko omnye we-tungsten disulfide exhonywe kwisakhelo se-silicon (umaleko wee-athomu ze-tungsten ufakwe phakathi kwee-athom ezimbini zesulfure), kwaye umaleko omnye wenza ikristale yefotonic ukusuka kuthotho lweepateni ze-nanopore.

Le kristale yomaleko omnye ikhethekileyo kuba ixhasa izibini ze-electron-hole ezibizwa ngokuba yi-excitons, kwiqondo lobushushu legumbi, ezi excitons zivelisa impendulo eyomeleleyo ye-optical kangangokuba isalathiso se-refractive sekristale siphantse sibe ngokuphindwe kane isalathisi se-air refractive emhlabeni jikelele. Ngokwahlukileyo, enye imathiriyeli enobungqingqwa obufanayo ayinaso isalathiso serefractive ephezulu. Njengoko ukukhanya kuhamba ngekristale, kubanjwe ngaphakathi kwaye kuqhutywe kunye nenqwelomoya ngokubonakaliswa kwangaphakathi ngokupheleleyo.

Ukukhanya kweetshaneli ze-waveguide kwi-spectrum ebonakalayo lolunye uphawu olukhethekileyo. I-Waveguiding ikhe yaboniswa ngaphambili ngegraphene, ekwancinci ngeathom, kodwa kubude be-infrared. Iqela libonise okokuqala i-waveguiding kummandla obonakalayo. Imingxunya ene-nanosized efakwe kwikristale ivumela ukukhanya okuthile ukuba kusasazeke ngokuthe ngqo kwinqwelomoya ukuze ijongwe kwaye ihlolwe. Olu luhlu lwemingxuma luvelisa ubume bexesha elenza ikristale kabini njengeresonator ngokunjalo.

Oku kukwenza ukuba ibe sesona sixhobo sokukhanya sincinci sokukhanya okubonakalayo owakhe waboniswa ngokomfuniselo. Le nkqubo ayiphuculi kuphela intsebenziswano yokukhanya, kodwa ikwasebenza njenge-coupler yolandelelwano lwesibini lokugalela ukukhanya kwi-optical waveguide.

Abaphandi basebenzise ubuchule obuphambili be-micro- kunye ne-nanofabrication ukwenza i-waveguide. Ukwenza eso sakhiwo kwakulucelomngeni ngokukhethekileyo. Izinto eziphathekayo zincinci nge-atom, ngoko ke abaphandi baqulunqa inkqubo yokuyimisa kwisakhelo se-silicon kwaye bayiphathe ngokuchanekileyo ngaphandle kokuyaphula.

I-waveguide ye-tungsten disulfide bubungqina bengqikelelo yokunciphisa isixhobo sokukhanya ukuya kubungakanani obuyiodolo yobukhulu obuncinci kunezixhobo zanamhlanje. Ingakhokelela kuphuhliso loxinaniso oluphezulu, iichips zefotonic eziphezulu.