ofufuza apanga chip chopyapyala kwambiri chokhala ndi mawonekedwe ophatikizika a Photonic omwe angagwiritsidwe ntchito kugwiritsa ntchito zomwe zimatchedwa kuti terahertz gap - yomwe ili pakati pa 0.3-30THz mu electromagnetic spectrum - yowonera ndi kujambula.
Kusiyana kumeneku pakali pano ndi chinthu chakufa kwaukadaulo, kufotokoza ma frequency omwe amathamanga kwambiri pazida zamakono zamagetsi ndi matelefoni, koma ochedwa kwambiri pakugwiritsa ntchito zowonera ndi zojambula.
Komabe, chipangizo chatsopano cha asayansi tsopano chimawathandiza kupanga mafunde a terahertz okhala ndi ma frequency ogwirizana, kutalika kwa mafunde, matalikidwe ndi gawo. Kuwongolera kolondola koteroko kumatha kupangitsa kuti ma radiation a terahertz agwiritsidwe ntchito m'mibadwo yotsatira muzinthu zonse zamagetsi ndi zowonera.
Ntchitoyi, yomwe idachitika pakati pa EPFL, ETH Zurich ndi University of Harvard, idasindikizidwa muNature Communications.
Cristina Benea-Chelmus, yemwe adatsogolera kafukufuku mu Laboratory of Hybrid Photonics (HYLAB) ku EPFL's School of Engineering, adalongosola kuti ngakhale mafunde a terahertz adapangidwa kale mu labu, njira zam'mbuyomu zidadalira kwambiri makhiristo ambiri kuti apange ma frequency oyenera. M'malo mwake, labu yake yogwiritsira ntchito dera la photonic, lopangidwa kuchokera ku lithiamu niobate ndi kukhazikika bwino pa sikelo ya nanometer ndi ogwira nawo ntchito ku yunivesite ya Harvard, imapanga njira yowonjezereka. Kugwiritsiridwa ntchito kwa gawo lapansi la silicon kumapangitsanso chipangizocho kukhala choyenera kuphatikizidwa muzinthu zamagetsi ndi zamagetsi.
"Kupanga mafunde pamayendedwe okwera kwambiri ndizovuta kwambiri, ndipo pali njira zochepa zomwe zingawapangitse kukhala ndi mawonekedwe apadera," adatero. "Tsopano tikutha kupanga mawonekedwe enieni a mafunde a terahertz - kunena kuti, 'Ndikufuna mawonekedwe owoneka ngati awa."
Kuti akwaniritse izi, labu ya Benea-Chelmus idapanga makonzedwe a tchipisi, otchedwa ma waveguides, m'njira yoti tinyanga tating'ono tating'ono titha kugwiritsidwa ntchito kuulutsa mafunde a terahertz opangidwa ndi kuwala kochokera ku ulusi wowonekera.
"Mfundo yakuti chipangizo chathu chimagwiritsa ntchito kale chizindikiro chodziwika bwino ndi chopindulitsa, chifukwa zikutanthauza kuti tchipisi zatsopanozi zingagwiritsidwe ntchito ndi lasers zachikhalidwe, zomwe zimagwira ntchito bwino komanso zimamveka bwino kwambiri. Zikutanthauza kuti chipangizo chathu ndi chogwirizana ndi telecommunications, "adatsindika Benea-Chelmus. Ananenanso kuti zida zazing'ono zomwe zimatumiza ndikulandila ma siginecha mumtundu wa terahertz zitha kutenga gawo lalikulu pamakina am'badwo wachisanu ndi chimodzi (6G).
M'dziko la optics, Benea-Chelmus amawona kuthekera kwa miniaturized lithiamu niobate tchipisi mu spectroscopy ndi kujambula. Kuphatikiza pa kukhala osatulutsa ionizing, mafunde a terahertz ali ndi mphamvu zochepa kwambiri kuposa mafunde ena ambiri (monga ma x-ray) omwe amagwiritsidwa ntchito panopo kupereka chidziwitso chokhudza kapangidwe ka chinthu - kaya ndi fupa kapena penti yamafuta. Chipangizo chophatikizika, chosawononga ngati chip cha lithiamu niobate chitha kupereka njira yocheperako poyerekeza ndi njira zamakono zowonera.
"Mungayerekeze kutumiza ma radiation a terahertz kudzera pa chinthu chomwe mukuchikonda ndikuchisanthula kuti muwone momwe zinthuzo zimayendera, kutengera kapangidwe kake ka maselo. Zonsezi zimachokera ku chipangizo chaching'ono kuposa mutu wa machesi," adatero.
Kenako, Benea-Chelmus akukonzekera kuyang'ana kwambiri pakusintha mawonekedwe a chip ma waveguide ndi tinyanga kuti apange ma waveform okhala ndi matalikidwe okulirapo, komanso kuchunidwa bwino kwambiri komanso kuwola. Amawonanso kuthekera kwaukadaulo wa terahertz wopangidwa mu labu yake kuti ikhale yothandiza pakugwiritsa ntchito kuchuluka.
"Pali mafunso ambiri ofunikira omwe tiyenera kuyankha; mwachitsanzo, tili ndi chidwi chofuna kudziwa ngati titha kugwiritsa ntchito tchipisi totere kuti tipange mitundu yatsopano ya radiation ya quantum yomwe imatha kusinthidwa nthawi yayifupi kwambiri.
Nthawi yotumiza: Feb-14-2023
