Ma mua ua hōʻike mākou i kā mākou и . I kēia lā hiki iā ʻoe ke nānā i ka ʻenehana optical o ka Faculty of Physics and Technology o ITMO University.
Kiʻi: XNUMXD nanolithograph
Aia ka Laboratory of Low-Dimensional Quantum Materials i ka Research Center for Nanophotonics and Metamaterials () ma ke kumu .
Hoʻopaʻa ʻia kāna mau limahana waiwai : plasmons, excitons a me polaritons. Hiki i kēia mau haʻawina ke hana i nā kamepiula optical a me quantum piha. Hoʻokaʻawale ʻia ke keʻena hana i kekahi mau wahi hana e uhi ana i nā pae āpau o ka hana me nā haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa: ka hoʻomākaukau ʻana i ka laʻana, kā lākou hana ʻana, ke ʻano a me nā haʻawina optical.
Hoʻolakoʻia ka'āpana mua me nā mea a pau e pono ai no ka hoʻomākaukauʻana i ka laʻana .
No ka hoʻomaʻemaʻe iā lākou, ua hoʻokomo ʻia kahi mea hoʻomaʻemaʻe ultrasonic, a no ka hōʻoia ʻana i ka hana palekana me nā waiʻona, ua hoʻolako ʻia kahi puʻupuʻu ikaika ma ʻaneʻi. Hāʻawi ʻia kekahi mau mea noiʻi iā mākou e nā limahana hoa hana ma Finland, Singapore a me Denmark.
No ka hoʻomaʻemaʻe ʻana i nā laʻana, hoʻokomo ʻia kahi keʻena hoʻomaloʻo BINDER FD Classic.Line i loko o ka lumi. ʻO nā mea hoʻomehana i loko e mālama i nā mahana mai 10 a 300 ° C. Loaʻa iā ia kahi interface USB no ka nānā mau ʻana i ka wela i ka wā o ka hoʻokolohua.
Hoʻohana pū nā limahana Laboratory i kēia keʻena e hana i nā hoʻokolohua koʻikoʻi a me nā hoʻokolohua ʻelemakule ma nā laʻana. Pono ia mau hoʻokolohua e hoʻomaopopo i ke ʻano o nā mea a me nā mea hana ma lalo o kekahi mau kūlana: maʻamau a ʻoi loa.
Hoʻokomo ʻia kahi nanolithograph ʻekolu-dimensional ma ka lumi aʻe. Hāʻawi ia i ka hana ʻana i nā hale ʻekolu-dimensional he mau haneli nanometer ka nui.
Hoʻokumu ʻia ke kumu o kāna hana ma ke ʻano o ka polymerization ʻelua-photon. ʻO ka mea nui, he mīkini paʻi 3D e hoʻohana i nā lasers e hana i kahi mea mai kahi polymer wai. Paʻa wale ka polymer ma kahi i kau ʻia ai ka kukuna laser.
Kiʻi: XNUMXD nanolithograph
ʻAʻole like me nā ʻenehana lithography maʻamau, i hoʻohana ʻia e hana i nā kaʻina hana a hana me nā ʻāpana lahilahi o nā mea, ʻelua-photon polymerization e ʻae i ka hana ʻana i nā hale paʻakikī ʻekolu-dimensional. No ka laʻana, e like me kēia:
Hoʻohana ʻia ka lumi aʻe o ke keʻena no nā hoʻokolohua optical.
Aia kekahi papaʻaina optical nui kokoke i ʻumi mika ka lōʻihi, hoʻopiha ʻia me nā mea hoʻonohonoho he nui. ʻO nā mea nui o kēlā me kēia hoʻonohonoho ʻana he kumu radiation (lasers a me nā kukui), spectrometers a me nā microscopes. ʻO kekahi o nā microscopes he ʻekolu mau ala ʻike i ka manawa hoʻokahi - luna, ʻaoʻao a me lalo.
Hiki ke hoʻohana ʻia no ke ana ʻana ʻaʻole wale i ka hoʻouna ʻana a me ka noʻonoʻo spectra, akā ke hoʻopuehu pū kekahi. Hāʻawi ka mea hope i ka ʻike waiwai loa e pili ana i nā nanoobjects, no ka laʻana, nā hiʻohiʻona spectral a me nā hiʻohiʻona radiation o nā nanoantennas.
I ke kiʻi: ka hopena o ka hoʻopuʻi ʻana o ka māmā ma nā ʻāpana silika
Aia nā lako a pau ma luna o ka papaʻaina me ka ʻōnaehana hoʻopaʻa haʻalulu hoʻokahi. Hiki ke hoʻouna ʻia ka radiation o kekahi laser i kekahi o nā ʻōnaehana optical a me nā microscopes me ka hoʻohana ʻana i kekahi mau aniani a hiki ke hoʻomau ʻia ka noiʻi.
Hiki ke hana i nā ho'āʻo ʻana i ka laser gase hoʻomau me ka hāiki loa . Hoʻopaʻa ʻia ka kukuna laser ma ka ʻili o ka hāpana, a hoʻopaʻa ʻia ka spectrum o ke kukui i hoʻopuehu ʻia e kahi spectrometer.
ʻIke ʻia nā laina haiki e pili ana i ka hoʻopuʻi ʻana o ka māmā inelastic (me ka hoʻololi ʻana i ka lōʻihi hawewe) i ka spectra. Hāʻawi kēia mau piko i ka ʻike e pili ana i ke ʻano aniani o ka hāpana, a i kekahi manawa e pili ana i ka hoʻonohonoho ʻana o kēlā me kēia mole.
Aia kekahi laser femtosecond i hoʻokomo ʻia i loko o ka lumi. Hiki iā ia ke hoʻohua pōkole loa (100 femtoseconds - hoʻokahi ʻumi-trillionth o kekona) pulses o ka radiation laser me ka mana nui. Ma muli o ka hopena, loaʻa iā mākou ka manawa kūpono e aʻo ai i nā hopena optical nonlinear: ka hoʻokumu ʻana i nā alapine pālua a me nā ʻano kumu ʻē aʻe i hiki ʻole ke loaʻa ma lalo o nā kūlana kūlohelohe.
Aia kā mākou cryostat i loko o ka hale hana. Hāʻawi ia i nā ana optical me ka hoʻonohonoho like o nā kumu, akā ma nā haʻahaʻa haʻahaʻa - a hiki i ʻehiku Kelvin, ʻo ia ka mea like me -266°C.
Ma lalo o ia mau kūlana, hiki ke ʻike ʻia kekahi mau hanana kūʻokoʻa, ʻo ia hoʻi, ke ʻano o ka hoʻopili ikaika ʻana ma waena o ka mālamalama a me ka mea, i ka wā e hana ai kahi photon a me kahi exciton (electron-hole pair) i hoʻokahi particle - he exciton-polariton. Paʻa nā Polaritons i ka ʻōlelo hoʻohiki maikaʻi ma nā kahua o ka computing quantum a me nā mea hana me nā hopena nonlinear ikaika.
Ma ke kiʻi: INTEGRA probe microscope
I loko o ka lumi hope o ke keʻena hana ua kau mākou i kā mākou mau mea hana diagnostic - и . ʻO ka mea mua e ʻae iā ʻoe e kiʻi i kahi kiʻi o ka ʻili o kahi mea me ka hoʻonā spatial kiʻekiʻe a aʻo i ka haku mele ʻana, ka hoʻolālā a me nā waiwai ʻē aʻe o nā papa honua o kēlā me kēia mea. No ka hana ʻana i kēia, ʻike ʻo ia iā lākou me kahi kukui o nā electrons i hoʻolalelale ʻia e ka volta kiʻekiʻe.
Hana like ka microscope probe scan me ka hoʻohana ʻana i ka probe e nānā i ka ʻili o ka hāpana. I kēia hihia, hiki ke loaʻa i ka manawa like ka ʻike e pili ana i ka "'āina" o ka ʻili hoʻohālike a e pili ana i kona mau waiwai kūloko, no ka laʻana, ka mana uila a me ka magnetization.
Kiʻi ʻia: ka nānā ʻana i ka microscope electron S50 EDAX
Kōkua kēia mau mea hana iā mākou e hōʻike i nā laʻana no nā haʻawina optical hou aʻe.
Nā papahana a me nā papahana
ʻO kekahi o nā papahana nui o ka hale hana e pili ana i nā mokuʻāina hybrid o ka māmā a me ka mea i loko o nā mea quantum—exciton-polaritons i ʻōlelo ʻia ma luna. Hāʻawi ʻia kahi mega-grant mai ke Kuhina Hoʻonaʻauao a me ʻEpekema o ka Russian Federation i kēia kumuhana. Ke alakaʻi ʻia nei ka papahana e ke alakaʻi ʻepekema mai ke Kulanui o Sheffield, ʻo Maurice Shkolnik. Hana ʻia ka hana hoʻokolohua ma ka papahana e Anton Samusev, a alakaʻi ʻia ka ʻāpana theoretical e Polofesa o ka Faculty of Physics and Technology Ivan Shelykh.
Ke aʻo nei nā limahana Laboratory i nā ala e hoʻouna ai i ka ʻike me ka solitons. ʻO Soliton nā nalu i hoʻopilikia ʻole ʻia e ka hoʻopuehu ʻana. Mahalo i kēia, ʻo nā hōʻailona i hoʻouna ʻia me ka solitons ʻaʻole i "laha" i ko lākou hoʻolaha ʻana, e hiki ai ke hoʻonui i ka wikiwiki a me ka laulā o ka hoʻouna ʻana.
I ka hoʻomaka ʻana o 2018, ʻepekema mai kā mākou Kulanui a me nā hoa hana mai ke kulanui ma Vladimir kumu hoʻohālike o kahi laser terahertz paʻa. ʻO ka hiʻohiʻona o ka hoʻomohala ʻana, ʻaʻole "hoʻopanee" ka radiation terahertz e nā mea i hana ʻia i ka lāʻau, ka plastic a me nā seramika. Mahalo i kēia waiwai, e hoʻohana ʻia ka laser i nā wahi mākaʻikaʻi a me nā ukana no ka ʻimi wikiwiki ʻana i nā mea metala. ʻO kekahi ʻāpana o ka hoʻohana ʻana ʻo ka hoʻihoʻi ʻana i nā mea kiʻi kahiko. E kōkua ka ʻōnaehana optical i ka loaʻa ʻana o nā kiʻi i hūnā ʻia ma lalo o nā papa pena a i ʻole nā ceramics.
ʻO kā mākou hoʻolālā e hoʻolako i ka hale hana me nā mea hana hou e hana i ka noiʻi paʻakikī. No ka laʻana, kūʻai i kahi laser femtosecond hiki ke hoʻokō, e hoʻonui nui i ka laulā o nā mea e aʻo ʻia. E kōkua kēia i nā hana e pili ana i nā ʻāpana kuantum no nā ʻōnaehana helu hanauna e hiki mai ana.
Pehea ka hana a ke ola ʻana o ITMO University:
Source: www.habr.com