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  • 2023

    12-26

    太(tai)陽光(guang)(guang)(guang)(guang)模(mo)(mo)擬器(qi)是利用(yong)人工光(guang)(guang)(guang)(guang)源(yuan)(yuan)在(zai)實(shi)驗(yan)(yan)室(shi)內模(mo)(mo)擬實(shi)現真實(shi)太(tai)陽光(guang)(guang)(guang)(guang)的(de)(de)光(guang)(guang)(guang)(guang)譜分布、輻照(zhao)度(du)(du)等特性的(de)(de)實(shi)驗(yan)(yan)設備,廣泛應(ying)用(yong)于括材料科(ke)學(xue)、光(guang)(guang)(guang)(guang)電(dian)子(zi)學(xue)和(he)太(tai)陽能(neng)等行業。模(mo)(mo)擬太(tai)陽光(guang)(guang)(guang)(guang)的(de)(de)意義在(zai)于能(neng)夠(gou)在(zai)實(shi)驗(yan)(yan)室(shi)或其他(ta)控(kong)制(zhi)環(huan)境下(xia)重現太(tai)陽光(guang)(guang)(guang)(guang)的(de)(de)特性,從(cong)(cong)而(er)進行各種(zhong)科(ke)學(xue)研(yan)究和(he)工程應(ying)用(yong)。太(tai)陽光(guang)(guang)(guang)(guang)模(mo)(mo)擬器(qi)常采用(yong)氙燈作(zuo)為光(guang)(guang)(guang)(guang)源(yuan)(yuan),使(shi)用(yong)濾光(guang)(guang)(guang)(guang)片、反射(she)鏡和(he)其它光(guang)(guang)(guang)(guang)學(xue)器(qi)件從(cong)(cong)而(er)模(mo)(mo)擬出太(tai)陽光(guang)(guang)(guang)(guang),以(yi)克服室(shi)外太(tai)陽光(guang)(guang)(guang)(guang)輻射(she)受時(shi)間(jian)和(he)氣(qi)候(hou)影響,且(qie)總輻照(zhao)度(du)(du)不(bu)能(neng)調節等缺點。太(tai)陽光(guang)(guang)(guang)(guang)模(mo)(mo)擬器(qi)的(de)(de)工作(zuo)原理主要是基于以(yi)下(xia)兩個方(fang)面:1.光(guang)(guang)(guang)(guang)源(yuan)(yuan):該產品(pin)使(shi)用(yong)高亮度(du)(du)的(de)(de)光(guang)(guang)(guang)(guang)源(yuan)(yuan)產生類似太(tai)陽光(guang)(guang)(guang)(guang)的(de)(de)輻射(she)。...

  • 2023

    12-26

    鎢燈絲(si)電(dian)(dian)鏡的(de)(de)(de)工(gong)作(zuo)原理基于電(dian)(dian)子(zi)束(shu)與樣(yang)(yang)(yang)品(pin)之間的(de)(de)(de)相互作(zuo)用(yong)。當高能(neng)電(dian)(dian)子(zi)束(shu)與樣(yang)(yang)(yang)品(pin)表(biao)面相互作(zuo)用(yong)時,發生(sheng)多種物理和(he)化學效應(ying),如(ru)散射(she)、輻(fu)射(she)和(he)吸(xi)收(shou)等。這(zhe)些效應(ying)會(hui)產生(sheng)不同(tong)的(de)(de)(de)信(xin)(xin)號,如(ru)二次電(dian)(dian)子(zi)信(xin)(xin)號、反射(she)電(dian)(dian)子(zi)信(xin)(xin)號、散射(she)電(dian)(dian)子(zi)信(xin)(xin)號和(he)X射(she)線等。SEM在掃(sao)描樣(yang)(yang)(yang)品(pin)表(biao)面時,可以收(shou)集(ji)并檢測到這(zhe)些信(xin)(xin)號,從而獲得(de)樣(yang)(yang)(yang)品(pin)的(de)(de)(de)形貌和(he)成分(fen)信(xin)(xin)息(xi)。優點是可以獲得(de)高分(fen)辨率(lv)的(de)(de)(de)樣(yang)(yang)(yang)品(pin)形貌和(he)成分(fen)信(xin)(xin)息(xi),對樣(yang)(yang)(yang)品(pin)的(de)(de)(de)觀察范(fan)圍(wei)廣泛,從納(na)米尺(chi)度到毫(hao)米尺(chi)度都(dou)可以覆蓋。它(ta)還具有操作(zuo)簡單(dan)、成像速度快、成本較低等優勢。具體來說(shuo),當電(dian)(dian)子(zi)束(shu)作(zuo)用(yong)于樣(yang)(yang)(yang)品(pin)表(biao)面時,會(hui)激發出...

  • 2023

    12-19

    鎢燈絲電鏡(TungstenFilamentElectronMicroscope),又稱為掃描電鏡(ScanningElectronMicroscope,SEM),是(shi)應用(yong)于材料科學和(he)生命科學領(ling)域的高分(fen)(fen)辨率顯微鏡。它(ta)利用(yong)高能(neng)電子束和(he)樣品(pin)之間的相互作(zuo)用(yong),通過掃描樣品(pin)表(biao)面(mian)來獲取樣品(pin)的形(xing)貌和(he)組成(cheng)信息(xi)。基本構成(cheng)包(bao)括電子源(yuan)、透鏡系、樣品(pin)臺、檢測器、顯像(xiang)系統等。電子源(yuan)是(shi)SEM的核心(xin)部件(jian),鎢燈絲作(zuo)為電子源(yuan)放(fang)電時會(hui)釋(shi)放(fang)出高能(neng)電子束。透鏡系用(yong)來聚焦和(he)控制電子束,將其聚焦到樣品(pin)表(biao)面(mian)形(xing)成(cheng)高分(fen)(fen)辨率圖像(xiang)...

  • 2023

    11-25

    場發(fa)射電(dian)(dian)(dian)鏡(FieldEmissionElectronMicroscope,縮寫為FE-SEM)是一種強大的(de)(de)(de)顯(xian)微(wei)鏡技術(shu)。它利用場發(fa)射電(dian)(dian)(dian)子(zi)源產生的(de)(de)(de)高能電(dian)(dian)(dian)子(zi)束來進(jin)行樣(yang)(yang)品(pin)的(de)(de)(de)高分辨率成(cheng)像(xiang),能夠提供(gong)比傳統(tong)掃描(miao)電(dian)(dian)(dian)子(zi)顯(xian)微(wei)鏡更高的(de)(de)(de)分辨率和(he)更強的(de)(de)(de)分析能力。場發(fa)射電(dian)(dian)(dian)鏡的(de)(de)(de)使用步(bu)驟:1.準備(bei)樣(yang)(yang)品(pin):選擇合(he)適的(de)(de)(de)樣(yang)(yang)品(pin),并進(jin)行必要(yao)的(de)(de)(de)預處(chu)理(li)。例如(ru),如(ru)果是固態材(cai)料,可能需要(yao)將樣(yang)(yang)品(pin)切割(ge)成(cheng)適合(he)放入電(dian)(dian)(dian)子(zi)顯(xian)微(wei)鏡的(de)(de)(de)尺(chi)寸,然(ran)后進(jin)行打磨和(he)拋光。2.安裝(zhuang)樣(yang)(yang)品(pin):將樣(yang)(yang)品(pin)安裝(zhuang)到電(dian)(dian)(dian)子(zi)顯(xian)微(wei)鏡的(de)(de)(de)樣(yang)(yang)品(pin)臺上。確保(bao)樣(yang)(yang)品(pin)穩定且位置正確,以確保(bao)獲得...

  • 2023

    11-20

    高(gao)光(guang)(guang)譜(pu)(pu)成(cheng)(cheng)像(xiang)(xiang)(xiang)技(ji)(ji)術(shu)是一(yi)種利(li)用(yong)光(guang)(guang)譜(pu)(pu)信息(xi)(xi)進行(xing)成(cheng)(cheng)像(xiang)(xiang)(xiang)的(de)(de)(de)(de)技(ji)(ji)術(shu)。不同于傳統的(de)(de)(de)(de)RGB三通道的(de)(de)(de)(de)彩色(se)成(cheng)(cheng)像(xiang)(xiang)(xiang),HSI能夠獲取連續的(de)(de)(de)(de)、寬廣的(de)(de)(de)(de)光(guang)(guang)譜(pu)(pu)信息(xi)(xi),為每個像(xiang)(xiang)(xiang)素提(ti)供(gong)一(yi)個連續的(de)(de)(de)(de)光(guang)(guang)譜(pu)(pu)響應曲線(xian)。這種技(ji)(ji)術(shu)能夠提(ti)供(gong)遠超過人眼(yan)識別(bie)能力(li)的(de)(de)(de)(de)光(guang)(guang)譜(pu)(pu)和空間信息(xi)(xi),使(shi)我(wo)們(men)能夠從不同的(de)(de)(de)(de)角(jiao)度和深(shen)度分析目標物體。高(gao)光(guang)(guang)譜(pu)(pu)成(cheng)(cheng)像(xiang)(xiang)(xiang)儀具有快速(su)(su)的(de)(de)(de)(de)數據(ju)(ju)采(cai)(cai)集(ji)和處理能力(li)。高(gao)光(guang)(guang)譜(pu)(pu)相機采(cai)(cai)用(yong)連續掃描的(de)(de)(de)(de)方式(shi)獲取光(guang)(guang)譜(pu)(pu)數據(ju)(ju),具有較(jiao)快的(de)(de)(de)(de)數據(ju)(ju)采(cai)(cai)集(ji)速(su)(su)度。這對于無(wu)損(sun)檢測來說非(fei)常重要,特別(bie)是在實時監測和快速(su)(su)檢測的(de)(de)(de)(de)場(chang)景下。高(gao)光(guang)(guang)譜(pu)(pu)相機可(ke)以實時獲取大量的(de)(de)(de)(de)光(guang)(guang)譜(pu)(pu)數據(ju)(ju),并通過快速(su)(su)的(de)(de)(de)(de)數據(ju)(ju)...

  • 2023

    11-17

    場(chang)發(fa)射(she)(she)電(dian)(dian)(dian)子(zi)(zi)源是場(chang)發(fa)射(she)(she)電(dian)(dian)(dian)鏡(jing)(jing)的(de)(de)核心部件(jian),它利用(yong)電(dian)(dian)(dian)場(chang)作用(yong)使(shi)電(dian)(dian)(dian)子(zi)(zi)從鎢或其(qi)他高(gao)(gao)電(dian)(dian)(dian)子(zi)(zi)親和力材料中釋放出來。場(chang)發(fa)射(she)(she)電(dian)(dian)(dian)子(zi)(zi)源具(ju)有較小的(de)(de)尺寸、高(gao)(gao)亮度(du)(du)(du)和長壽命,能夠提供高(gao)(gao)束流密(mi)度(du)(du)(du)的(de)(de)電(dian)(dian)(dian)子(zi)(zi)束。電(dian)(dian)(dian)子(zi)(zi)光學系(xi)統包括準(zhun)直透(tou)鏡(jing)(jing)、電(dian)(dian)(dian)子(zi)(zi)源支架(jia)、電(dian)(dian)(dian)子(zi)(zi)束磁(ci)透(tou)鏡(jing)(jing)和檢測(ce)器等組成(cheng)。通(tong)(tong)過精確控制(zhi)透(tou)鏡(jing)(jing)的(de)(de)磁(ci)場(chang)分布,可以將電(dian)(dian)(dian)子(zi)(zi)束聚焦到納(na)米尺度(du)(du)(du)下,實現高(gao)(gao)分辨率(lv)成(cheng)像。樣(yang)品臺(tai)是電(dian)(dian)(dian)鏡(jing)(jing)中支持和移動(dong)樣(yang)品的(de)(de)平(ping)臺(tai)。樣(yang)品臺(tai)通(tong)(tong)常(chang)具(ju)有高(gao)(gao)精度(du)(du)(du)的(de)(de)運動(dong)系(xi)統,可以使(shi)樣(yang)品在多(duo)個軸向上進行精確的(de)(de)定位和旋轉,以獲得多(duo)角度(du)(du)(du)、高(gao)(gao)分辨率(lv)的(de)(de)成(cheng)像。場(chang)發(fa)射(she)(she)電(dian)(dian)(dian)鏡(jing)(jing)的(de)(de)應用(yong):1.納(na)米材料...

  • 2023

    10-29

    光(guang)(guang)(guang)(guang)電(dian)探(tan)測(ce)(ce)器(qi)是將光(guang)(guang)(guang)(guang)輻射轉(zhuan)化為電(dian)量(liang)(liang)的(de)(de)(de)一種元器(qi)件(jian),它有(you)(you)(you)著廣泛(fan)的(de)(de)(de)用(yong)途(tu),從粒子(zi)探(tan)測(ce)(ce)望遠鏡(jing)到大型強(qiang)子(zi)對撞機,再到對紫(zi)外(wai)線(xian)敏感的(de)(de)(de)太(tai)陽(yang)鏡(jing),到處都(dou)有(you)(you)(you)光(guang)(guang)(guang)(guang)電(dian)探(tan)測(ce)(ce)器(qi)。光(guang)(guang)(guang)(guang)電(dian)探(tan)測(ce)(ce)器(qi)的(de)(de)(de)原(yuan)理是由輻射引起(qi)被照(zhao)射材料(liao)電(dian)導(dao)率發(fa)生(sheng)改變。光(guang)(guang)(guang)(guang)電(dian)探(tan)測(ce)(ce)器(qi)在(zai)軍事(shi)和國民經濟的(de)(de)(de)各個領域有(you)(you)(you)廣泛(fan)用(yong)途(tu)。在(zai)可見(jian)光(guang)(guang)(guang)(guang)或近紅(hong)外(wai)波段主(zhu)(zhu)要(yao)用(yong)于(yu)(yu)射線(xian)測(ce)(ce)量(liang)(liang)和探(tan)測(ce)(ce)、工業自動(dong)控制、光(guang)(guang)(guang)(guang)度(du)計量(liang)(liang)等(deng);在(zai)紅(hong)外(wai)波段主(zhu)(zhu)要(yao)用(yong)于(yu)(yu)紅(hong)外(wai)熱(re)成(cheng)像(xiang)(xiang)、紅(hong)外(wai)遙(yao)感等(deng)方面(mian)。光(guang)(guang)(guang)(guang)電(dian)導(dao)體(ti)的(de)(de)(de)另一應用(yong)是用(yong)它做(zuo)攝像(xiang)(xiang)管靶面(mian)。為了避免(mian)光(guang)(guang)(guang)(guang)生(sheng)載流子(zi)擴散(san)引起(qi)圖像(xiang)(xiang)模糊,連續薄膜靶面(mian)都(dou)用(yong)高阻(zu)多晶(jing)材料(liao),如PbS-PbO...

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