Txhua yam khoom uas muaj qhov kub siab tshaj xoom kiag li yuav tso tawm lub zog mus rau sab nraud hauv daim ntawv ntawm lub teeb infrared. Cov thev naus laus zis siv hluav taws xob infrared los ntsuas cov khoom siv tseem ceeb hu ua infrared sensing technology.
Cov thev naus laus zis infrared sensor yog ib qho ntawm cov thev naus laus zis uas tsim kho sai tshaj plaws hauv xyoo tas los no, infrared sensor tau siv dav hauv aerospace, astronomy, meteorology, tub rog, kev lag luam thiab pej xeem thiab lwm yam teb, ua lub luag haujlwm tseem ceeb. Infrared, hauv qhov tseeb, yog ib hom electromagnetic radiation wavelength, nws qhov wavelength yog kwv yees li 0.78m ~ 1000m spectrum range, vim nws nyob hauv lub teeb pom kev sab nraum lub teeb liab, yog li hu ua infrared. Txhua yam khoom uas muaj qhov kub siab tshaj xoom kiag li yuav tso tawm lub zog mus rau hauv qhov chaw sab nraud hauv daim ntawv ntawm lub teeb infrared. Cov thev naus laus zis sensing uas siv infrared radiation los ntsuas cov khoom siv lub cev tseem ceeb hu ua infrared sensing technology.
Lub tshuab ntsuas photonic infrared yog ib hom tshuab ntsuas uas ua haujlwm los ntawm kev siv cov teebmeem photon ntawm cov hluav taws xob infrared. Qhov hu ua photon effect txhais tau hais tias thaum muaj qhov xwm txheej infrared ntawm qee cov khoom siv semiconductor, cov photon ntws hauv cov hluav taws xob infrared cuam tshuam nrog cov electrons hauv cov khoom siv semiconductor, hloov lub xeev zog ntawm cov electrons, ua rau muaj ntau yam xwm txheej hluav taws xob. Los ntawm kev ntsuas qhov kev hloov pauv hauv cov khoom siv hluav taws xob ntawm cov khoom siv semiconductor, koj tuaj yeem paub lub zog ntawm cov hluav taws xob infrared sib xws. Cov hom tseem ceeb ntawm cov tshuab ntsuas photon yog cov tshuab ntsuas photon sab hauv, cov tshuab ntsuas photon sab nraud, cov tshuab ntsuas free carrier, QWIP quantum well detector thiab lwm yam. Cov tshuab ntsuas sab hauv kuj muab faib ua hom photoconductive, hom photovolt-generating thiab hom photomagnetoelectric. Cov yam ntxwv tseem ceeb ntawm lub tshuab ntsuas photon yog qhov rhiab heev, qhov teb ceev ceev, thiab qhov teb zaus siab, tab sis qhov tsis zoo yog tias qhov kev ntes kab yog nqaim, thiab nws feem ntau ua haujlwm ntawm qhov kub qis (txhawm rau kom tswj tau qhov rhiab heev, kua nitrogen lossis thermoelectric refrigeration feem ntau siv los txias lub tshuab ntsuas photon kom txias dua qhov kub ua haujlwm).
Cov cuab yeej tshuaj xyuas cov khoom siv raws li infrared spectrum technology muaj cov yam ntxwv ntawm ntsuab, ceev, tsis puas tsuaj thiab online, thiab yog ib qho ntawm kev txhim kho sai ntawm high-tech analytical technology hauv kev tshuaj xyuas chemistry. Ntau cov roj molecules uas muaj cov asymmetric diatoms thiab polyatoms muaj cov absorption bands sib xws hauv infrared radiation band, thiab qhov wavelength thiab absorption zog ntawm cov absorption bands sib txawv vim yog cov molecules sib txawv muaj nyob rau hauv cov khoom ntsuas. Raws li kev faib tawm ntawm cov absorption bands ntawm ntau yam roj molecules thiab lub zog ntawm kev nqus, cov khoom sib xyaw thiab cov ntsiab lus ntawm cov roj molecules hauv cov khoom ntsuas tuaj yeem txheeb xyuas tau. Infrared gas analyzer siv los irradiate cov ntsuas nruab nrab nrog lub teeb infrared, thiab raws li infrared absorption yam ntxwv ntawm ntau yam molecular media, siv infrared absorption spectrum yam ntxwv ntawm roj, los ntawm kev tshuaj xyuas spectral kom ua tiav cov roj sib xyaw lossis concentration tsom xam.
Cov spectrum kuaj mob ntawm hydroxyl, dej, carbonate, Al-OH, Mg-OH, Fe-OH thiab lwm yam molecular bonds tuaj yeem tau txais los ntawm infrared irradiation ntawm lub hom phiaj khoom, thiab tom qab ntawd qhov wavelength txoj hauj lwm, qhov tob thiab dav ntawm lub spectrum tuaj yeem ntsuas thiab tshuaj xyuas kom tau txais nws cov hom, cov khoom thiab piv ntawm cov ntsiab lus hlau tseem ceeb. Yog li, kev tshuaj xyuas cov khoom sib xyaw ntawm cov khoom siv khov kho tuaj yeem ua tiav.
Lub sijhawm tshaj tawm: Lub Xya Hli-04-2023