Kev txheeb xyuas cov qauv ua kua muaj ntau yam kev siv hauv kev tshawb fawb txog lub neej thiab kev saib xyuas ib puag ncig.Hauv kev ua haujlwm no, peb tau tsim lub photometer compact thiab pheej yig raws li hlau waveguide capillaries (MCCs) rau kev txiav txim siab ntawm kev nqus.Txoj kev kho qhov muag tuaj yeem ua tau zoo heev, thiab ntev npaum li lub cev ntev ntawm MWC, vim tias lub teeb tawg los ntawm corrugated du hlau sidewalls tuaj yeem muaj nyob rau hauv capillary tsis hais lub kaum sab xis ntawm qhov xwm txheej.Concentrations tsawg li 5.12 nM tuaj yeem ua tiav siv cov chromogenic reagents vim yog qhov tsis yog-linear optical amplification thiab ceev cov qauv hloov thiab kuaj cov piam thaj.
Photometry yog dav siv rau kev soj ntsuam ntawm cov qauv ua kua vim muaj ntau ntawm cov chromogenic reagents thiab semiconductor optoelectronic devices1,2,3,4,5.Piv nrog rau kev txiav txim siab ntawm cuvette-based absorbance, kua waveguide (LWC) capillaries muaj kev cuam tshuam (TIR) los ntawm kev ua kom lub teeb tsom mus rau hauv lub capillary1,2,3,4,5.Txawm li cas los xij, tsis muaj kev txhim kho ntxiv, txoj kev kho qhov muag tsuas yog ze rau lub cev ntev ntawm LWC3.6, thiab nce LWC ntev tshaj li 1.0 m yuav raug kev txom nyem los ntawm lub teeb muaj zog attenuation thiab muaj kev pheej hmoo siab ntawm npuas, thiab lwm yam.3, 7. mus rau lub tswv yim multi-reflection cell rau optical txoj kev txhim kho, qhov kev kuaj pom tsuas yog txhim kho los ntawm qhov zoo ntawm 2.5-8.9.
Tam sim no muaj ob yam tseem ceeb ntawm LWC, uas yog Teflon AF capillaries (muaj qhov ntsuas qhov ntsuas ntawm tsuas yog ~ 1.3, uas yog qis dua li dej) thiab silica capillaries coated nrog Teflon AF lossis hlau films1,3,4.Txhawm rau ua tiav TIR ntawm qhov sib cuam tshuam ntawm cov khoom siv dielectric, cov khoom siv nrog qhov ntsuas qis qis thiab cov teeb pom kev siab siab yog xav tau 3,6,10.Nrog rau Teflon AF capillaries, Teflon AF yog breathable vim nws cov qauv ntxeem tau 3,11 thiab tuaj yeem nqus cov khoom me me hauv cov qauv dej.Rau quartz capillaries coated sab nraud nrog Teflon AF los yog hlau, qhov refractive index ntawm quartz (1.45) yog siab dua li feem ntau cov qauv ua kua (xws li 1.33 rau dej) 3,6,12,13.Rau capillaries coated nrog ib tug hlau zaj duab xis nyob rau hauv, thauj khoom tau kawm 14,15,16,17,18, tab sis cov txheej txheem txheej yog nyuaj, nto ntawm cov hlau zaj duab xis muaj ib tug ntxhib thiab ntxeem tau qauv 4,19.
Tsis tas li ntawd, kev lag luam LWCs (AF Teflon Coated Capillaries thiab AF Teflon Coated Silica Capillaries, Ntiaj Teb Precision Instruments, Inc.) muaj qee qhov tsis zoo, xws li: rau kev ua txhaum..Qhov loj tuag ntim ntawm TIR3,10, (2) T-connector (kom txuas capillaries, fibers, thiab inlet / qhov hluav taws xob raj) tuaj yeem ntxiab cua npuas10.
Nyob rau tib lub sijhawm, kev txiav txim siab ntawm cov piam thaj hauv cov ntshav yog qhov tseem ceeb rau kev kuaj mob ntshav qab zib, cirrhosis ntawm daim siab thiab mob hlwb20.thiab ntau txoj kev kuaj pom xws li photometry (xws li spectrophotometric 21, 22, 23, 24, 25 thiab colorimetry ntawm daim ntawv 26, 27, 28), galvanometry 29, 30, 31, fluorometry 32, 33, 34, 35, optical 35. nto plasmon resonance.37, Fabry-Perot kab noj hniav 38, electrochemistry 39 thiab capillary electrophoresis 40,41 thiab lwm yam.Txawm li cas los xij, feem ntau ntawm cov txheej txheem no xav tau cov cuab yeej kim, thiab kev kuaj pom cov piam thaj ntawm ntau qhov nanomolar concentration tseem yog qhov nyuaj (piv txwv li, rau kev ntsuas photometric 21, 22, 23, 24, 25, 26, 27, 28, qhov qis tshaj ntawm cov piam thaj).Qhov kev txwv tsuas yog 30 nM thaum Prussian xiav nanoparticles tau siv los ua peroxidase mimics).Nanomolar glucose analytics feem ntau xav tau rau cov kev tshawb fawb molecular-theem cellular xws li inhibition ntawm tib neeg prostate cancer loj hlob 42 thiab CO2 fixation tus cwj pwm ntawm Prochlorococcus nyob rau hauv dej hiav txwv.
Post lub sij hawm: Nov-26-2022