X-ray emission nemaerekitironi emahara achirovera pane van der Waals zvinhu.Chikwereti: Technion - Israel Institute of Technology
Vatsvagiri veTekinoroji vakagadzira masosi emwaranzi echokwadi anotarisirwa kutungamira mukubudirira mukufungidzira kwekurapa nedzimwe nzvimbo.Vakagadzira manyuko chaiwoiwo emwaranzi angatsiva nzvimbo dzinodhura uye dzinorema dzinoshandiswa pari zvino kuita mabasa akadaro.Chishandiso chinokurudzirwa chinoburitsa mwaranzi inodzorwa ine nhete spectrum inogona kugadziridzwa nepamusoro resolution, pane yakaderera simba rekudyara.Zvakawanikwa zvinogona kutungamira mukubudirira mune dzakasiyana siyana minda, kusanganisira kuongororwa kwemakemikari uye zvipenyu zvipenyu, kufungidzira kwekurapa, X-ray zvishandiso zvekuchengetedza kuchengetedza, uye kumwe kushandiswa kwechokwadi X-ray masosi.

Rakadhindwa mujenari Nature Photonics, chidzidzo ichi chaitungamirwa naProfessor Ido Kaminer nemudzidzi watenzi wake Michael Shentcis sechikamu chekubatana nemasangano akati wandei ekutsvagisa paTechnion: Andrew naErna Viterbi Faculty of Electrical Engineering, Solid State Institute, the Russell Berrie Nanotechnology Institute (RBNI), uye Helen Diller Center yeQuantum Science, Matter uye Engineering.

Pepa revatsvagiri rinoratidza ongororo yekuyedza inopa yekutanga humbowo-hwe-pfungwa yemamodheru edzidziso akagadzirwa mumakore gumi apfuura munhevedzano yezvinyorwa zvinomiririra.Chinyorwa chekutanga pamusoro penyaya iyi chakabudawo muNature Photonics.Yakanyorwa naProf. Kaminer panguva yake postdoc paMIT, pasi pekutariswa kwaProf. Marin Soljacic naProf. John Joannopoulos, bepa iroro rakaratidza kuti zvinhu zviviri-dimensional zvinogona kugadzira X-rays.Maererano naProfessor Kaminer, “chinyorwa ichocho chakaratidza kutanga kworwendo rwokuenda kunzvimbo dzinomwaranzi mwaranzi zvichibva pafizikisi yakasiyana-siyana yezvinhu zvine mativi maviri uye misanganiswa yazvo yakasiyana-siyana—maumbirwo emagetsi.Isu takavaka pamusoro peiyo theoretical budiriro kubva kuchinyorwa ichocho kugadzira nhevedzano yezvinyorwa zvekutevera, uye ikozvino, isu tinofara kuzivisa yekutanga yekuyedza yekutarisa pakusikwa kweX-ray radiation kubva kuzvinhu zvakadaro, tichinyatso kudzora ma paramita eradiation. .”

Maviri-dimensional zvimiro zvakasiyana-siyana zvekugadzira zvakatora nharaunda yesainzi nedutu gore ra2004 nekugadzirwa kwegraphene nenyanzvi dzefizikisi Andre Geim naKonstantin Novoselov, avo vakazohwina Mubairo weNobel muFizikisiki muna 2010. Ukobvu hweatomu humwechete hwakagadzirwa kubva kumaatomu ecarbon.Mavambo ekutanga egraphene akagadzirwa nevaviri vakahwina mubairo weNobel nekubvisa zvidimbu zvitete zvegraphite, "zvinyorwa zvekunyora" zvepenzura, vachishandisa tepi yekudhirowa.Masayendisiti maviri uye vaongorori vakazotevera vakawana kuti graphene ine yakasarudzika uye inokatyamadza zvimiro zvakasiyana kubva kune graphite zvivakwa: kusimba kukuru, kunenge kujeka kwakazara, magetsi conductivity, uye mwenje-kutumira kugona kunobvumira kubuda kwemwaranzi-chinhu chine chekuita nechinyorwa chiripo.Aya akasiyana maficha anoita kuti graphene uye zvimwe-maviri-dimensional zvinhu zvinovimbisa kuzvizvarwa zvinotevera zvemakemikari uye biological sensors, masero ezuva, semiconductors, monitors, nezvimwe.

Mumwe mubairo weNobel anofanira kutaurwa asati adzokera kuchidzidzo chazvino ndiJohannes Diderik van der Waals, uyo akahwina Mubairo weNobel muFizikisi makore zana chaiwo akanga apfuura, muna 1910. Zvishandiso zvino zvakatumidzwa zita rake—vdW zvinhu—ndizvo zvinonyanya kutariswa. Tsvakurudzo yaProf. Kaminer.Graphene zvakare muenzaniso wevdW zvinhu, asi chidzidzo chitsva ikozvino chaona kuti zvimwe zvemberi vdW zvinhu zvinobatsira zvakanyanya nechinangwa chekugadzira X-rays.Vatsvakurudzi veTechnion vakagadzira zvakasiyana-siyana zvevdW uye vakatumira matanda erekitironi kuburikidza nawo pamakona chaiwo akatungamirira ku X-ray kubuda nenzira inodzorwa uye yakarurama.Pamusoro pezvo, vaongorori vakaratidza kukwenenzverwa kweiyo radiation spectrum pakugadziriswa kusati kwamboitika, vachishandisa kuchinjika mukugadzira mhuri dzevdW zvinhu.

Chinyorwa chitsva cheboka rekutsvagisa chine mhedzisiro yekuyedza uye dzidziso itsva iyo pamwe chete inopa humbowo-hwe-pfungwa yekuvandudza kushandiswa kwezvinhu-maviri-maviri seyakabatana system inoburitsa inodzorwa uye yakarurama mwaranzi.

"Kuedza uye dzidziso yatakagadzira kuitsanangura inoita mupiro wakakura mukudzidza kwekusangana kwechiedza-chinhu uye kugadzira nzira yekushandiswa kwakasiyana-siyana mu X-ray imaging (yekurapa X-ray, semuenzaniso), X-ray spectroscopy inoshandiswa. kuratidza zvinhu, uye ramangwana quantum chiedza masosi mu X-ray hurumende, "akadaro Prof. Kaminer.