Micro-nano photonics na-amụkarị iwu nke mmekọrịta dị n'etiti ìhè na ihe na micro na nano scale na ngwa ya na ọgbọ ọkụ, nnyefe, ụkpụrụ, nchọpụta na nghọta. Ngwa micro-nano photonics sub-wavelength nwere ike imeziwanye ogo nke ntinye foton nke ọma, a na-atụkwa anya na ọ ga-ejikọta ngwaọrụ fotonic n'ime obere mgbawa anya dị ka ibe eletrọnịkị. Nano-surface plasmonics bụ ubi ọhụrụ nke micro-nano photonics, nke na-amụkarị mmekọrịta dị n'etiti ìhè na ihe na nanostructures ígwè. Ọ nwere njirimara nke obere nha, oke ọsọ na imeri oke diffraction ọdịnala. Ọdịdị Nanoplasma-waveguide, nke nwere ezigbo nkwalite mpaghara na njirimara nzacha resonance, bụ ihe ndabere nke nano-filter, wavelength division multiplexer, optical switch, laser and other micro-nano optical devices. Microcavities anya na-amachi ọkụ na obere mpaghara ma na-akwalite mmekọrịta dị n'etiti ìhè na ihe. Ya mere, microcavity anya na ihe dị elu dị elu bụ ụzọ dị mkpa nke nghọta na nchọpụta dị elu.
WGM microcavity
N'ime afọ ndị na-adịbeghị anya, microcavity anya adọtala nlebara anya dị ukwuu n'ihi nnukwu ike itinye ya na uru sayensị. Ihe nleba anya nke ọma na-agụnye microsphere, microcolumn, microring na geometry ndị ọzọ. Ọ bụ ụdị resonator anya dabere na morphologic. Ebili mmiri dị na microcavities na-egosipụta n'ụzọ zuru oke na interface microcavity, na-ebute ọnọdụ resonance nke a na-akpọ ọnọdụ njakịrị n'obi (WGM). Tụnyere ndị ọzọ na-ahụ anya resonators, microresonators nwere àgwà nke elu Q uru (karịa 106), ala mode olu, obere size na mfe mwekota, wdg, na etinyere na elu-sensitivity biochemical sensing, ultra-low threshold laser and. omume na-adịghị adị. Ebumnuche nyocha anyị bụ ịchọta ma mụọ njirimara nke ụdị dị iche iche na ọdịdị dị iche iche nke microcavities, na itinye njirimara ọhụrụ ndị a. Isi ntụzịaka nyocha gụnyere: nyocha njirimara ngwa anya nke microcavity WGM, nyocha nrụpụta nke microcavity, nyocha ngwa nke microcavity, wdg.
WGM microcavity biochemical mmetụta
N'ime nnwale ahụ, a na-eji usoro WGM dị elu dị n'usoro anọ M1 (FIG. 1 (a)) iji chọpụta nha. N'iji ya tụnyere usoro dị ala, a na-eme ka uche nke ọnọdụ dị elu dịkwuo mma (FIG. 1 (b)).
Ọnụọgụ 1. Ụdị resonance (a) nke oghere microcapillary na ihe nhụsianya refractive index kwekọrọ (b)
Ihe nzacha anya a na-emegharị emegharị nwere uru Q dị elu
Mbụ, radial ji nwayọọ nwayọọ na-agbanwe cylindrical microcavity na-wepụrụ, na mgbe ahụ wavelength n'iji ya gee ntị nwere ike nweta site mechanically na-akpụ akpụ na njikọ ọnọdụ dabere na ụkpụrụ nke udi size ebe ọ bụ na resonant wavelength (Figure 2 (a)). A na-egosi arụmọrụ a na-atụgharị na bandwidth nzacha na eserese 2 (b) na (c). Na mgbakwunye, ngwaọrụ ahụ nwere ike ịghọta nhụta mbugharị anya na njiri nke sub-nanometer ziri ezi.
Onyonyo 2. Eserese atụmatụ nke nzacha ngwa anya na-atụgharị (a), arụmọrụ a na-emegharị emegharị (b) na bandwidth nyo (c)
WGM microfluidic dobe resonator
na microfluidic mgbawa, karịsịa maka droplet na mmanụ (droplet in-mmanụ), n'ihi na e ji mara nke elu esemokwu, maka dayameta nke iri iri ma ọ bụ ọbụna ọtụtụ narị microns, ọ ga-akwụsịtụ na mmanụ, na-akpụ a fọrọ nke nta. zuru oke gburugburu. Site na njikarịcha nke ntugharị refractive, droplet n'onwe ya bụ resonator sppherical zuru oke na ihe dị mma karịa 108. Ọ na-ezerekwa nsogbu nke evaporation na mmanụ. Maka nnukwu ụmụ irighiri mmiri, ha "ga-anọdụ ala" n'elu mgbidi ma ọ bụ nke dị ala n'ihi ọdịiche dị njupụta. Ụdị droplet a nwere ike iji naanị ọnọdụ mkpali dị n'akụkụ.
Oge nzipu: Ọktoba 23-2023