Rōpū whakawhitiwhiti whatu, pūoro whatu tino angiangi

Rōpū whakawhitiwhiti whatu, pūoro whatu tino angiangi
Ka taea e ngā pūorooro whatu te tautuhi i ngā roangaru motuhake o ngā ngaru mārama i roto i tētahi wāhi iti, ā, he mea nui ā rātou tono i roto i te taunekeneke mārama-matū.whakawhitiwhiti kōrero whatu, te pūoko whatu, me te whakaurunga whatu. Ko te rahi o te resonator e whakawhirinaki ana ki ngā āhuatanga o te rauemi me te roangaru whakahaere, hei tauira, ko ngā resonator silicon e mahi ana i roto i te roopu infrared tata e hiahia ana ki ngā hanganga whatu o ngā rau nanometer me runga ake. I ngā tau tata nei, kua aro nuihia ngā resonator whatu papatahi tino angiangi nā te mea ka taea te whakamahi i roto i te tae hanganga, te whakaahua holographic, te whakahaere mara mārama me ngā taputapu optoelectronic. Ko te whakaiti i te matotoru o ngā resonator papatahi tētahi o ngā raruraru uaua e pā ana ki ngā kairangahau.
He rerekē i ngā rauemi semiconductor tuku iho, ko ngā ārai topological 3D (pēnei i te bismuth telluride, te antimony telluride, te bismuth selenide, me ētahi atu) he rauemi mōhiohio hou me ngā āhua mata whakarewa me ngā āhua ārai e tiakina ana e te topology. Ka tiakina te āhua mata e te ōritetanga o te hurihanga wā, ā, kāore ōna irahiko e mararahia e ngā poke kore-aukume, he mea nui ngā tūmanakohanga tono i roto i te rorohiko kuantum iti-mana me ngā taputapu spintronic. I taua wā anō, ka whakaatuhia hoki e ngā rauemi ārai topological ngā āhuatanga whatu pai rawa atu, pērā i te taupū whakaata teitei, te kore-raina nui.whatute tauwehenga, te whānuitanga o te whānuitanga mahi, te ngāwari o te whakarerekētanga, te ngāwari o te whakauru, me ētahi atu, e whakarato ana i tētahi tūāpapa hou mō te whakatutukitanga o te whakahaere mārama me tengā taputapu optoelectronic.
Kua whakaarohia e tētahi rōpū rangahau i Haina tētahi tikanga mō te hanga i ngā resonator whatu tino angiangi mā te whakamahi i ngā nanofilms whakapūmau bismuth telluride e tipu haere ana i te rohe nui. E whakaatu ana te kōhao whatu i ngā āhuatanga mimiti oro i roto i te roopu tata-whero. He tino teitei te taupū whakaata o te Bismuth telluride neke atu i te 6 i roto i te roopu whakawhitiwhiti whatu (teitei ake i te taupū whakaata o ngā rauemi taupū whakaata teitei tuku iho pērā i te silicon me te germanium), kia taea ai e te matotoru o te kōhao whatu te eke ki te rua tekau o te roangaru whakaata. I taua wā anō, ka whakatakotoria te resonator whatu ki runga i te karaihe photonic kotahi-ahu, ā, ka kitea he pānga mārama hou i puta mai i te hikohiko i roto i te roopu whakawhitiwhiti whatu, nā te hononga o te resonator ki te plasmon Tamm me tana pokanoa whakangaro. Ko te urupare āwhata o tēnei pānga e whakawhirinaki ana ki te matotoru o te resonator whatu, ā, he pakari ki te huringa o te taupū whakaata taiao. Ka whakatuwherahia e tēnei mahi he huarahi hou mō te whakatutukitanga o te kōhao whatu tino angiangi, te whakahaere i te whānuitanga rauemi whakapūmau topological me ngā taputapu optoelectronic.
E ai ki te whakaaturanga i te Pikitia 1a me te 1b, ko te nuinga o te mea hanga o te resonator whatu he mea hanga mai i te insulator topological bismuth telluride me ngā nanofilms hiriwa. He whānui te horahanga o ngā nanofilms bismuth telluride i hangaia mā te magnetron sputtering, ā, he papatahi pai. Ina he 42 nm me te 30 nm te matotoru o ngā kiriata bismuth telluride me te hiriwa, ka whakaatu te kōhao whatu i te mimiti kaha i roto i te roopu 1100~1800 nm (Pikitia 1c). I te wā i whakauruhia ai e ngā kairangahau tēnei kōhao whatu ki runga i te karaihe photonic i hangaia mai i ngā puranga whakawhiti o ngā paparanga Ta2O5 (182 nm) me SiO2 (260 nm) (Pikitia 1e), ka puta he awaawa mimiti motuhake (Pikitia 1f) i te taha o te tihi mimiti mimiti taketake (~1550 nm), he rite ki te pānga mārama i puta mai i te hikohiko i hangaia e ngā pūnaha ngota.

I tautuhia te rauemi bismuth telluride mā te karu hiko tuku me te ellipsometry. E whakaatu ana te Pikitia 2a-2c i ngā karu hiko tuku (ngā whakaahua taumira teitei) me ngā tauira diffraction irahiko kua tīpakohia o ngā nanofilm bismuth telluride. Ka kitea mai i te pikitia ko ngā nanofilm bismuth telluride kua whakaritea he rauemi polycrystalline, ā, ko te aronga tipu matua ko te papa tioata (015). E whakaatu ana te Pikitia 2d-2f i te taupū whakaata matatini o te bismuth telluride i inehia e te ellipsometer me te āhua mata kua whakauruhia me te taupū whakaata matatini. E whakaatu ana ngā hua he nui ake te tauwehenga whakamōkito o te āhua mata i te taupū whakaata i te awhe o te 230~1930 nm, e whakaatu ana i ngā āhuatanga rite ki te konganuku. Ko te taupū whakaata o te tinana he nui ake i te 6 ina nui ake te roanga ngaru i te 1385 nm, he nui ake i tērā o te silicon, te germanium me ētahi atu rauemi taupū whakaata teitei tuku iho i roto i tēnei roopu, e whakatakoto ana i te turanga mō te whakarite i ngā resonators whatu tino angiangi. E tohu ana ngā kairangahau koinei te kitenga tuatahi o tētahi āputa whatu papatahi whakapūmau topological me te matotoru o ngā tekau nanometer anake i roto i te roopu whakawhitiwhiti whatu. I muri mai, i inehia te whānuitanga mimiti me te roanga ngaru whakaata o te āputa whatu tino angiangi ki te matotoru o te bismuth telluride. Hei whakamutunga, ka rangahauhia te pānga o te matotoru o te kiriata hiriwa ki ngā whānuitanga mārama i puta mai i te hikohiko i roto i ngā hanganga nanocavity/kiriata photonic bismuth telluride.

Mā te whakarite i ngā kiriata angiangi papatahi whānui o ngā ārai topological bismuth telluride, me te whakamahi i te taupū whakaata tino teitei o ngā rauemi Bismuth telluride i roto i te roopu tata-whero-pūwhero, ka puta he kōhao whatu papatahi me te matotoru o ngā tekau nanometer anake. Ka taea e te kōhao whatu tino-angiangi te whakatutuki i te mimiti mārama resonant whai hua i roto i te roopu tata-whero-pūwhero, ā, he uara nui tōna tono i roto i te whanaketanga o ngā taputapu optoelectronic i roto i te roopu whakawhitiwhiti whatu. Ko te matotoru o te kōhao whatu bismuth telluride he rārangi ki te roangaru resonant, ā, he iti ake i te kōhao whatu silicon me te germanium rite. I taua wā anō, ka whakauruhia te kōhao whatu bismuth telluride ki te karaihe photonic hei whakatutuki i te pānga whatu rerekē e rite ana ki te māramatanga hikohiko o te pūnaha ngota, e whakarato ana i tētahi tikanga hou mō te whakahaere i te whānuitanga o te hanganga moroiti. He wāhi nui tā tēnei rangahau ki te whakatairanga i te rangahau o ngā rauemi ārai topological i roto i te whakahaere mārama me ngā taputapu mahi whatu.