Terahertz technology thiab nws daim ntawv thov

T-txoj kab lus yog ib hom kev ua haujlwm uas siv TSIS terahertz tsis, qhov hu ua terahertz science, los kawm txog ib lub zeem hluav taws xob z-nthwv dej uas tuaj yeem "pom los ntawm" ntau heev. Ntau tshaj li 100 xyoo dhau los, terahertz tau hais nyob rau hauv cov teeb meem astronomy, tab sis nws tsis tshua muaj kev tshoov siab nyob rau hauv kev tshawb fawb thiab kev ua hauj lwm. Nyob hauv microwave, pom lub teeb pom kev zoo thiab duab ci ntsa iab siv dav, qhov laj thawj loj heev rau kev lag luam kev loj hlob ntawm terahertz lus dag nyob rau hauv qhov tsis muaj ntes thiab qhov chaw, txog 10 lub xyoo tsis ntev los no, nrog kev txhim kho cov kev tshawb fawb, cov neeg nyob hauv kev tshawb fawb ntawm no teb muaj kev loj hlob loj. Tam sim no, txoj kev tshawb ntawm terahertz tau tsim rau hauv ib qho tshiab, thiab kev kawm txog terahertz tau loj hlob los ntawm peb pawg 20 xyoo dhau los rau ntau tshaj 200 units thoob ntiaj teb.

Terahertz tsis muaj electromagnetic tsis nrog frequencies xws li ntawm 0.1THz mus 10.0thz. Nws muaj ntau yam khoom zoo tshaj plaws thiab yog los ntawm Tebchaws Meskas raws li ib qho ntawm "saum toj 10 technologies uas yuav hloov lub ntiaj teb ntawm lub neej yav tom ntej." Terahertz spectroscopy, terahertz duab thiab terahertz kev sib txuas lus yog peb txoj kev tshawb fawb loj. Nws muaj cov ntaub ntawv tseem ceeb hauv ntau lub tswv yim xws li kev soj ntsuam xyuas kev nyab xeeb, kev tsis paub txog qhov kev tshawb nrhiav, astrophysics, biology, tshuaj, atmospheric physics, environmental ecology thiab tub rog science. Schottky diode nrog high cutoff zaus muaj peev xwm paub tau tias tov, nrhiav kom tau thiab doubling ntawm terahertz tsis nyob rau hauv chav tsev kub. Tsis tas li ntawd, qhov kev paub ntawm lub vajvoog terahertz ntawm tsawg poob substrate yog lub hauv paus ntawm terahertz technology.

THZ yoj yog 10 THZ zaus nrug ntawm 0.1 T rau (nyob rau hauv 3 hli wavelength mus txog 30 um) ntawm lub electromagnetic spectrum, nws nruab nrab ntawm millimeter yoj thiab lub teeb duab teeb ci, kom deb li deb tsis tau tas nrho tib neeg kev paub thiab kev siv cov spectrum resource, yuav tsum mus rau kev sib txuas lus (broadband communications, radar, electronic countermeasures, electromagnetic riam phom coj profound hloov, kev nyab xeeb kuaj, thiab lwm yam.

Terahertz cim tshwj xeeb rau kev sib txuas lus (xov tooj sib txuas, kev sib txuas lus, xov tooj cua, hluav taws xob, tsom iav, kev tshawb fawb, kev tshawb fawb, Vim tias qhov siab ntawm terahertz, nws qhov kev daws teebmeem tseem muaj siab, nws tseem muaj lub sijhawm daws teeb meem vim tias nws lub luv mem tes (ntawm qhov kev txiav txim siab ntawm picosecond) Terahertz imaging thiab terahertz spectroscopy yog ob qhov tseem ceeb technologies rau kev siv cov lus teb Thaum lub sijhawm no, vim hais tias terahertz yog lub zog me thiab tsis ua teebmeem dabtsi, nws muaj kev zoo dua xoo fais fab, thiab vim tias kev siv tshuaj lom neeg lub cev muaj zog thiab kev sib hloov ntawm cov qoobloos (frequency) yog nyob rau hauv THZ nthwv dej, yog li ntawm terahertz nyob rau hauv cov khoom noj xaiv, kev xaiv ntawm cov hom zoo thiab lwm yam kev ua lag luam thiab cov zaub mov ua kev lag luam muaj ib daim ntawv zoo p rospect. Daim ntawv thov ntawm terahertz tseem nyob hauv kev txhim kho thiab kev tshawb nrhiav, thiab nws lub tswv yim loj heev yog lees paub thoob ntiaj teb.

Tom qab ntau tshaj li kaum xyoo ntawm kev tshawb fawb, thoob ntiaj teb kev tshawb fawb tau lees paub tias Science thiab technology yog ib qho tseem ceeb ntawm kev sib tsoo. Nws muaj qhov kev daws teeb meem siab vim nws txoj kev siab ntev (wavelength yog ntau dua 1000 dua li microwave). Vim tias lub plab tsis yog luv (femtosecond), Thaj hluav taws xob muaj qhov kev daws teeb meem ntawm lub cev. THz imaging thiab THz spectroscopy yog ob qhov tseem ceeb yees hauv Thz application. Ntawm qhov tod tes, lub zog ntawm Thz yog me me, nws tsis rhuav tshem cov khoom, yog li nws muaj ib qho loj zoo tshaj xoo fais fab.

Terahertz tsis tuaj yeem hloov xoo hluav taws xob, tab sis nws muaj qee yam zoo uas x-ray tsis tau. Xoo hluav taws xob thiab ultrasound tuaj yeem nrhiav tau tus qauv qhia thiab lub xeev ntawm tus kwv, tab sis nws tsis tuaj yeem ntes cov tshuaj ntawm cov khoom, tsis paub qhov txawv ntawm cov khoom tawg thiab cov tshuaj, terahertz, tab sis, muaj peev xwm, kev tawm tsam thoob ntiaj teb tiv thaiv kev ua phem yog zoo tseem ceeb. Terahertz tau qhia ntau tshaj li 50 tawm ntawm ntau pua hom khoom tawg thiab mines tam sim no ua los ntawm tib neeg. Qhov tseeb txoj kev loj hlob yog ib ncig ntawm 30 meters, thiab terahertz yuav pom qhov tseeb nplaum. Qhov tseeb, 30 meters tsis yog qhov zoo nrug, tab sis nws yog ib qho cuab tam muaj txiaj ntsim, nws zoo sib xws rau lwm yam kev ruaj ntseg.

Lub neej tom ntej terahertz yuav nthuav daim ntawv thov ntawm qhov plaub yam hauv qab no, ib qho yog kawm txog cov khoom siv khoom, tshwj xeeb tshaj yog lub teeb leb thiab semiconductor, cov yam ntxwv ntawm kev kub siab tshaj qhov kev tshawb fawb yog terahertz spectroscopy daim ntawv sau npe ntawm lwm qhov, qhov thib ob yog THZ kuaj thiab kev tshawb fawb ct, peb yog kev tshawb fawb los ntawm thaj chaw ntawm kev tshawb fawb thiab tshuaj, xws li los ntawm kev mob cancer rau kab mob caj ces, thiab lwm yam. Txoj kev tshawb xyuas tseeb tau pom tias neeg feem ntau haus kasfes yog tias ntsib nrog qee cov tshuaj, nws yuav ua " ", thiab kev siv lub tshuab terahertz, yuav muaj nyob rau hauv pharmacology, mob cancer ntxov ntxov, thiab lwm yam., yuav muaj kev cuam tshuam tshiab.

Tshiab thiab muaj zog tshiab txoj kev tshawb fawb

(1) Thesis imaging thiab THz spectroscopy muaj ntaub ntawv tseem ceeb hauv physics, chemistry, biomedical science, astronomy, cov khoom science thiab environmental science.

(2) tsis tsuas tuaj yeem tuaj yeem siv Teeb duab nrhav thiab tuaj yeem ua haujlwm zoo thiab kev sojntsuam, ua haujlwm kev tshawb fawb rau hauv cov ntaub ntawv hauv, txog kev siv tshuaj lub cev thiab txheeb raws roj ntsha, yam ntxwv ntawm spectral, cov cim, cov kev sib tham ntawm quantum, thiab lwm cov ntaub ntawv tseem ceeb.

Piv txwv: siv cov kev tshawb fawb ntawm CdSe cov teeb meem ntawm cov teeb meem ntawm lub cev, kev tshawb nrhiav Ti02 nanometer kab khiav dej num hauv kev thauj khoom, thiab kev tshawb xyuas kev tswj atoms / molecules tsis muaj hluav taws xob quantum leap, thiab lwm yam tseem ceeb tshiab tau ua tiav. Cov kev ua tau zoo tshaj plaws tau ua nyob rau hauv Cov Kev Lag Luam Thaib, quantum computer applications thiab THz hluav taws xob ntawm cov ntsiab lus nyob rau hauv cov chaw muaj zog magnetic.

Siv zog muaj zog thia hluav taws xob yuav ua rau cov txheej txheem nonlinear puab ntawm cov txheej txheem atoms thiab molecules, thiab yog li muaj hwj chim ultrashort pulsed Thz tuaj yeem kawm cov yam ntxwv ntawm nonlinear ntawm cov khoom ntawm qib molecular.

(3) Tz kuj muaj qhov zoo ntawm qhov kev kuaj kom ntshav. Kev sib kis ntawm qhov sib txawv ntawm qhov kub thiab high density plasma tuaj yeem kuaj tau los ntawm cov hluav taws xob tawg paj. THz sawv tawm hauv daim ntawv thov hauv qhov kev tshawb fawb astronomical, cov kws tshawb fawb hauv South Pole chaw nres tsheb tsim ib lub xov tooj cua, siv cov thes telescopes pom tias ntau lub hnub qub tseem ceeb, kawm txog keeb kwm ntawm lub ntiaj teb thiab kev tsim hnub qub muaj qhov tseem ceeb, nws tsim nyog hais txog nyob rau thaum ntxov 2005 hauv Suav teb, kuj tsim ib qho chaw tshawb fawb hauv Antarctic).

THz technology yuav los ua ib txoj haujlwm tseem ceeb hauv kev txhim kho kev tsim kho ntawm kev ua haujlwm ntawm tsoomfwv

(1) daim ntawv thov ntawm Thz hauv biomedical science yog cov txaus nyiam heev. Hauv kev ntsuam xyuas thiab kev kho mob ntawm daim tawv nqaij mob cancer, DNA tshawb nrhiav, kev siv tshuaj kho mob ntawm Kev Tuab Them Tuab, Siv tshuaj biochemistry, tshuaj ntsuam xyuas thiab nrhiav kom tau, thiab lwm yam, tag nrho qhia nws cov yam ntxwv zoo thiab cov txiaj ntsig.

Kev siv tshuab biomolecular biosolecular tau tsim los ntawm kev kawm txog protein ntau thiab cov yam ntxwv ntawm cov keeb kwm.

Yog li ntawd, nws muaj peev xwm heev txhawb kev loj hlob ntawm molecular biology, thiab muaj ib daim ntawv zoo kawg nkaus hauv kev kho mob thiab kev tshawb fawb thiab kev siv tshuaj.

(2) vim kev sib hloov ntawm qhov kev sib hloov ntawm qhov kev sib hloov thiab biological macromolecules hauv cov thawv band, thiab Tha tshuab hluav taws xob muaj peev xwm muab cov lus qhia tseem ceeb ntawm DNA, vim li ntawd, hauv cov nroj tsuag, tshwj xeeb tshaj yog cov khoom noj xaiv, xaiv hom kabmob zoo tuaj yeem ua si ib qho tseem ceeb. Nyob rau hauv ib lo lus, terahertz science thiab technology yog qhov tseem ceeb rau kev ua liaj ua teb, zaub mov ua noj thiab lwm yam lag luam.

Lawv muaj kev siv dav hauv biomedicine. Daim duab nram qab no qhia tau hais tias kev kuaj mob thiab daim ntawv thov mob cancer hauv Tuam Tseg.

(3) Cov hluav taws xob tawg tuaj yeem nkag mus rau haus luam yeeb thiab txhom tau cov tshuaj lom los yog teeb meem ua rau muaj teeb meem, yog li nws tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev saib xyuas thiab tiv thaiv. Nws tau tshaj tawm tias cov khoom soj ntsuam hluav taws xob (2.5thz uas tau siv cov CO2 lasers ua cov twj tso kua mis) tau muab tso rau hauv peb cov chaw muag khoom.

Thz muaj qhov tshwj xeeb zoo hauv daim ntawv thov kev ruaj ntseg ntawm teb chaws thiab kev tiv thaiv kev ua phem

(1) siv lub vaj tse uas Thiaj muaj peev xwm nkag mus rau cov khoom, thawj lub British tau tsim lub thia koob yees duab thiab tau raug kuaj hauv qhov chaw kuaj kev ruaj ntseg hauv tshav dav hlau, nrog cov txiaj ntsim zoo. Tshwj xeeb, ORNL ua haujlwm nrog lub tsev kawm ntawv Tennessee nyob rau hauv Kev Tshaj Tawm ntawm phab ntsa, uas siv THz mus saib tau cov ntaub ntawv tawm sab nraud. Obviously, cov txheej txheem no muaj nqis heev hauv kev ruaj ntseg hauv teb chaws

Tsis tas li ntawd, kev siv Thaj spectroscopy tuaj yeem ceev nrooj thiab pom tau zoo thiab cim tau cov tshuaj. Lub Tebchaws Asmeskas tau ua tiav cov haujlwm xws li kev siv THz spectroscopy los xyuas kev xa ntawv, nrog rau kev tshawb nrhiav cov tshuaj chemicals thiab tshuaj lom.

(2) Tz kuj muaj zoo peev xwm hauv radar thiab kev sib txuas lus kev sib txuas lus. Yog tsis muaj kev txhawj xeeb txog Thz qhov loj lossis loj hauv chaw sib txuas lus. THz lub qhov atmospheric qhov rai kuj tau kawm (duab 6). THz radar muaj nuj nqi tshwj xeeb hauv kev tiv thaiv kev ruaj ntseg. Tsab xov xwm nram qab no qhia txog qhov teeb meem ntawm lub hwj chim loj Thr radiation sources, uas yog npaj rau THz radar thiab lwm tus. Thaj chaw satellite chaw duab thiab kev sib txuas lus yuav yog qhov tseem ceeb ntawm kev txhawj xeeb rau yav tom ntej.

(3) Tz siv los txhom tau qhov tsis ua hauj lwm ntawm qhov chaw shuttle

Tsocai tom qab kev tsoo ntawm chaw khau av Columbia, kev tsom xam ntawm qhov ua rau kev sib tsoo tau hais raws li cov duab video los ntawm kev tso tawm ntawm qhov chaw shuttle. Ib tug American laboratory tau sim ua kev sim. Lub plawv feem ntawm THz pulse yog lTHz thiab bandwidth yog 3thz. Los ntawm ntau qhov kev sim, tshwj xeeb tshaj qhov kev paub nrhiav tau ntawm PAL ~ Ramp SOFI Insulation npuas txheej, THz pulse tuaj yeem tsis muaj kev soj ntsuam ntawm chaw seem shuttle. Peb qhov kev pabcuam hauv chav yuav yeej xav tau kev pabcuam li no.

Science thiab technology yog lub hauv paus ntawm ib tiam tshiab ntawm IT kev lag luam

(1) cov kws tshawb fawb xav tias THz ua qhov kev sib tw ntawm IT niaj hnub science, technology thiab kev lag luam ib zaug Thaj hluav taws xob thiab Thiaj pom tias cov cuab yeej tsim tawm. Qhov sib txeeb no yeej pib.

(2) nrog rau kev kawm txog science thiab technology, ntau lub tuam txhab muaj ntau lub tuam txhab tau yug los, piv txwv: lub tebchaws Rutherford National Laboratory (Rutherford Appleton Lab (RAL)) thiab European Space Agency (ESA) hauv xyoo 2002, Lub hnub qub Ti ger tom qab ua tiav ntawm txoj kev npaj, txhim tsa ib lub tuam txhab ThruVision tuam txhab, tshwj xeeb hauv kev ua haujlwm, kev lag luam ntawm Tz imaging tsim passive THz imaging, muaj cov yam ntxwv nram qab no: a. Passive tsis tau thx qhov chaw; B. Tiag tiag saib duab. Lub tsev kawm ntawv ntawm Cambridge tau ua rau TeraView Ltd, lub tuam txhab high-tech hu ua Spinoff. Koom rau hauv kev loj hlob ntawm THz lub koob yees duab;

(3) Picometrix tau ua haujlwm ntawm University of Michigen thiab University of Stanford. Physicalscience Inc.; Calabazas Creek Res. Inc. Tuam txhab xws li. Picometrix, raws li hauv Kalifonias, tau ua haujlwm nrog "kev xaij Science thiab kev siv technology rau tsoomfwv thiab tsev kawm ntawv LABS kom lawv tuaj yeem siv rau kev tshawb nrhiav haujlwm".

(4) kuj muaj ntau lub tuam txhab nyob rau hauv Nyij Pooj, uas tau koom nrog txoj kev tshawb fawb, kev tsim kho thiab kev lag luam ntawm Science thiab technology, suav nrog lub siab zog Tz. Nws pom tau tias ib tiam tshiab ntawm IT kev lag luam raws li Science thiab technology tau pib siv cov qauv zoo li qub.

Kev tshawb ntawm Thz technology nws tus kheej yog ib qho tseem ceeb

Xws li lub cim kev tsim ntawm ntau yam thawm tawg, tawm thiab kis ntawm ultra-luv mem tes Thz, kev sib cuam tshuam ntawm Tz thiab teeb meem, thiab lwm yam.

Hauv qab no yog qee cov txheej txheem thaiv duab ntawm Thz imaging thiab THz spectrum. Ib tug ntawm lawv yog ib tug 150-micron THz duab thaiv daim duab uas tsim los ntawm JPL. Txoj kev loj hlob thiab daim ntawv thov Thz imaging thiab THz spectrum tuaj yeem pom ntawm cov kab kos.

Nyob rau tib lub sij hawm tseem tuaj yeem pom tau tias tsim kom muaj kev tha duab thiab THz spectrum yuav tsum tau kawm txog yam khoom siv thiab cov khoom, xws li: Cov kev pabcuam, Lub tswvyim, sib tov, kev xaib, resonant, thiab lwm yam. ntawm Thz imaging thiab THz spectrum. Los ntawm tshooj txuas ntxiv, peb yuav tham txog cov cuab yeej thiab cov khoom no.