Menene micro-nano photonics?

Micro-nano photonics ya fi nazarin ka'idar hulɗar tsakanin haske da kwayoyin halitta a ma'aunin micro da nano da aikace-aikacensa a cikin tsarar haske, watsawa, tsari, ganowa da ganewa.Micro-nano photonics sub-wavelength na'urorin iya inganta yadda ya kamata matakin photon hadewa, kuma ana sa ran hade photonic na'urorin a cikin wani karamin gani guntu kamar lantarki kwakwalwan kwamfuta.Nano-surface plasmonics wani sabon fanni ne na micro-nano photonics, wanda galibi yana nazarin hulɗar tsakanin haske da kwayoyin halitta a cikin nanostructures na ƙarfe.Yana da halaye na ƙananan girman, babban gudun da kuma shawo kan ƙayyadaddun ƙayyadaddun al'ada.Tsarin Nanoplasma-waveguide, wanda yana da kyawawan haɓakar filin gida da halayen tacewa, shine tushen nano-tace, rarrabuwar raƙuman ruwa, canjin gani, Laser da sauran na'urorin gani na micro-nano.Ƙananan ƙananan ƙwayoyin gani suna taƙaita haske zuwa ƙananan yankuna kuma suna haɓaka hulɗar tsakanin haske da kwayoyin halitta.Sabili da haka, microcavity na gani tare da ma'auni mai inganci shine hanya mai mahimmanci na babban hankali da ganowa.

WGM microcavity

A cikin 'yan shekarun nan, microcavity na gani ya jawo hankali sosai saboda babban damar aikace-aikacensa da mahimmancin kimiyya.Na gani microcavity yafi kunshi microsphere, microcolumn, microring da sauran geometries.Yana da wani nau'i na morphologic dogara na gani resonator.Hasken raƙuman ruwa a cikin ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan hanyoyi suna nunawa sosai a cikin ƙananan ƙananan ƙananan hanyoyi, wanda ya haifar da yanayin resonance da ake kira yanayin raɗaɗi (WGM).Idan aka kwatanta da sauran na gani resonators, microresonators suna da halaye na babban Q darajar (mafi girma fiye da 106), low yanayin girma, kananan size da kuma sauki hadewa, da dai sauransu, kuma an yi amfani da high-sensitivity biochemical ji, matsananci-low kofa Laser da kuma aiki mara kyau.Manufar binciken mu shine ganowa da nazarin halaye na sifofi daban-daban da nau'ikan nau'ikan nau'ikan microcavities, da kuma amfani da waɗannan sabbin halaye.Babban kwatancen bincike sun haɗa da: binciken halayen gani na WGM microcavity, ƙirƙira bincike na microcavity, binciken aikace-aikacen microcavity, da sauransu.

WGM microcavity biochemical sening

A cikin gwajin, an yi amfani da yanayin WGM mai girma-tsari huɗu na M1 (FIG. 1 (a)) don auna ma'auni.Idan aka kwatanta da yanayin ƙananan oda, an inganta haɓakar yanayin babban tsari sosai (FIG. 1 (b)).

Hoto 1. Yanayin Resonance (a) na kogon microcapillary da madaidaicin ma'anar refractive (b)

Tacewar gani mai kunnawa tare da ƙimar Q mai girma

Na farko, radial sannu a hankali canza cylindrical microcavity aka ja daga, sa'an nan da wavelength tuning za a iya cimma ta mechanically motsi da hada guda biyu matsayi bisa ka'idar siffar size tun resonant raƙuman ruwa (Hoto 2 (a)).Ana nuna aikin daidaitawa da bandwidth tacewa a cikin Hoto 2 (b) da (c).Bugu da kari, na'urar zata iya gane matsugunin gani tare da daidaiton sub-nanometer.

Hoto 2. Tsarin tsari na tacewa na gani mai daidaitawa (a), aikin da ake iya daidaitawa (b) da tace bandwidth (c)

WGM microfluidic drop resonator

a cikin guntu microfluidic, musamman ga droplet a cikin mai (digo a cikin man fetur), saboda halaye na tashin hankali, don diamita na dubun ko ma daruruwan microns, za a dakatar da shi a cikin man fetur, samar da kusan kusan. cikakken sarari.Ta hanyar ingantawa na refractive index, droplet kanta shine cikakkiyar resonator mai siffar zobe tare da ma'auni mai mahimmanci fiye da 108. Har ila yau, yana guje wa matsalar rashin ruwa a cikin man fetur.Don ƙananan ƙananan ɗigon ruwa, za su "zauna" a kan bangon gefe na sama ko ƙananan saboda bambance-bambancen yawa.Irin wannan digo na iya amfani da yanayin tashin hankali na gefe kawai.