Waveguide inogadzirwa ne tungsten disulfide yakagadziridzwa nemainjiniya kuYunivhesiti yeCalifornia San Diego uye inongori matatu akaturikidzana emaatomu akaonda uye ndiyo thinnest Optical mudziyo pasi rose! Vatsvagiri vakaburitsa zvavakawana muna Aug 12 mukatiNanotechnology zvakasikwa.

Iyo itsva waveguide, ingangoita 6 angstroms (1 angstrom = 10^-10metres), ka10,000 kutetepa pane yakajairika faibha, uye kanokwana ka500 kutetepa kupfuura on-chip optical mudziyo mune yakabatanidzwa photonic circuit. Inoumbwa nechikamu chimwe chete chetungsten disulfide yakaturikwa pasilicon furemu (mutsetse wemaatomu etungsten wakaiswa pakati pemaatomu maviri esarufa), uye imwe-layer inoumba photonic crystal kubva munhevedzano ye nanopore mapatani.

Iyi imwe layer yekristaro yakakosha pakuti inotsigira maelectron-hole pairs anonzi maexcitons, pakamuri tembiricha, maexcitons aya anogadzira mhinduro yakasimba yekuona zvekuti iyo refractive index yekristaro inokwana kana kana mhepo inoratidzira indekisi yakatenderedza pamusoro payo. Mukupesana, chimwe chinhu chine ukobvu hwakafanana hachina yakakwira refractive index. Sezvo chiedza chichifamba nekristaro, chinotorwa mukati uye chinoitwa pamwe chete nendege nekunyatsofungisisa kwemukati.

Iyo waveguide chiteshi chiedza mune inooneka spectrum chimwe chinhu chakakosha. Waveguiding yakamboratidzwa negraphene, iyo zvakare yakatetepa atomu, asi painfrared wavelengths. Chikwata chakaratidza kekutanga chichitenderera munzvimbo inooneka. Nanosized maburi akaiswa mukristaro anobvumira kumwe mwenje kuparadzira perpendicular kune ndege kuitira kuti ionekwe nekuferefetwa. Aya maburi akawanda anoburitsa a periodic chimiro chinoita kuti kristaro yakapetwa kaviri seresonator zvakare.

Izvi zvinoitawo kuti ive thinnest optical resonator yechiedza chinooneka chingambo ratidzwa mukuedza. Iyi sisitimu haingo wedzera resonant chete kupindirana kwechiedza-nyaya, asi inoshandawo sechipiri-order grating coupler kubatanidza mwenje mune optical waveguide.

Vatsvagiri vakashandisa advanced micro- uye nanofabrication matekiniki kugadzira waveguide. Kugadzira chivako chacho kwakanga kwakaoma zvikuru. Izvo zvinhu zvakatetepa atomu, saka vaongorori vanogadzira nzira yekuimisa pasilicon furemu uye kuigadzira chaizvo pasina kuityora.

Iyo tungsten disulfide waveguide chiratidzo chepfungwa yekudzikisa pasi mudziyo wekuona kune saizi ari maodha ehukuru hudiki pane zvishandiso zvanhasi. Zvinogona kutungamira mukusimudzirwa kwepamusoro density, yakakwirira yemhando photonic chips.