Nyanzvi dzefizikisi kubva kuMoscow Institute of Physics and Technology pamwe nevanoshanda navo kubva kuMoscow State Pedagogical University uye University of Manchester vakagadzira yakanyanya kucherekedza terahertz radiation detector zvichibva pane tunneling maitiro mugraphene. Kutaura zvazviri, munda-effect tunnel transistor yakashandurwa ikava detector, iyo inogona kuvhurwa nezviratidzo "kubva kumhepo", uye kwete kuendeswa kuburikidza nematunhu akajairika.
Quantum tunneling. Mufananidzo kunobva: Daria Sokol, MIPT press service
Kuwanikwa kwacho, kwaive kwakavakirwa pane pfungwa dzefizikisi Mikhail Dyakonov naMikhail Shur vakakurudzirwa mukutanga kwema1990, inoswededza nguva yewaya terahertz tekinoroji. Izvi zvinoreva kuti kumhanya kwekutaurirana kusina waya kuchawedzera kakawanda pamusoro, uye radar nekuchengetedza matekinoroji, radio astronomy uye kuongororwa kwekurapa kuchakwira kusvika padanho idzva.
Pfungwa yevadzidzisi vefizikisi yeRussia yaive yekuti mugero transistor wakanzi usashandiswe kwete kukwidziridza chiratidzo uye kuderedzwa, asi sechishandiso icho "pachezvacho chinoshandura chiratidzo chakagadziridzwa kuita kutevedzana kwebhiti kana ruzivo rwezwi nekuda kwehukama husina mutsara. pakati pezvino nevoltage." Mune mamwe mazwi, iyo tunneling mhedzisiro inogona kuitika padanho rakaderera rechiratidzo pagedhi retransistor, izvo zvinobvumira iyo transistor kuti itange tunneling ikozvino (yakavhurika) kunyangwe kubva kune isina kusimba chiratidzo.
Sei chirongwa chekare chekushandisa transistors chisina kukodzera? Paunenge uchienda kune terahertz renji, mazhinji aripo ma transistors haana nguva yekugamuchira inodiwa kubhadharisa, saka redhiyo redhisheni ine isina simba chiratidzo amplifier pane transistor inoteverwa nedemodulation inoshaya basa. Izvo zvinodiwa kana kuvandudza transistors, iyo inoshandawo kusvika kune imwe muganhu, kana kupa chimwe chinhu chakasiyana zvachose. Nyanzvi dzefizikisi dzekuRussia dzakanyatsotaura "mumwe" uyu.
Graphene tunnel transistor se terahertz detector. Mufananidzo kunobva: Nature Communications
"Pfungwa yemhinduro yakasimba yetunnel transistor kune yakaderera voltages yave ichizivikanwa kwemakore angangoita gumi nemashanu," anodaro mumwe wevanyori vechidzidzo ichi, mukuru werabhoritari ye optoelectronics yezvinhu zviviri-mativi paCentre for Photonics. uye Two-Dimensional Materials paMIPT, Dmitry Svintsov. "Pamberi pedu, hapana akaziva kuti chivakwa chimwe chete ichi chetunnel transistor chinogona kushandiswa mutekinoroji yeterahertz." Sokuona kwakaita masayendisiti, "kana transistor ikavhura nekuvharika zvakanaka iine simba rakaderera rechiratidzo chekudzora, inofanirawo kunge yakanaka pakunhonga chiratidzo chisina kusimba kubva mumhepo."
Paye kuyedza, yakatsanangurwa mujenari Nature Communications, mugero transistor wakagadzirwa pabilayer graphene. Kuedza kwakaratidza kuti kunzwisiswa kwechishandiso mutunnel modhi maodha akati wandei ehukuru akakwira kupfuura iwo mukirasi yekufambisa modhi. Nekudaro, iyo yekuyedza transistor detector yakave isina kuipa mukunzwa kupfuura yakafanana superconductor uye semiconductor bolometers inowanikwa pamusika. Dzidziso yacho inoratidza kuti iyo yakachena graphene, iyo yakanyanya kunzwisiswa ichave, iyo inodarika zvakanyanya kugona kweazvino terahertz detectors, uye iyi haisi shanduko, asi shanduko muindasitiri.
Source: 3dnews.ru