介電電泳技術(DielectricElectrophoresis，簡稱DEP)是一種應用于微流體芯片、新型分離檢測技術的生物分子操作手段。針對這一目前前沿的研究領域，Aigtek安泰電子為其實(shi)驗提供了切實(shi)可行(xing)的測試(shi)方案，今(jin)天我們(men)就來具(ju)體講解一下如何用高壓放大(da)器驅動(dong)介電電泳（EDP）系統。

　　介(jie)電(dian)介(jie)質材(cai)料(liao)的表面(mian)存在電(dian)極分(fen)布可以通過電(dian)場作(zuo)用把被操作(zuo)物質分(fen)離或(huo)排列成某種特(te)定規則(ze)。介(jie)電(dian)電(dian)泳(yong)技術主要依靠所施(shi)加(jia)電(dian)場與物質本身的介(jie)電(dian)性質不同，從而對其進行分(fen)離操作(zuo)。

　　介電電泳的產生

　　產生(sheng)在微粒上的偶極(ji)矩(ju)可以有(you)兩(liang)個相(xiang)同帶電(dian)量但極(ji)性相(xiang)反的電(dian)荷來(lai)表示，當它們在微粒界面上不對稱分布時，產生(sheng)一(yi)個宏(hong)觀的偶極(ji)矩(ju)。當這個偶極(ji)矩(ju)位于不勻稱電(dian)場中，在微粒兩(liang)邊的局(ju)部電(dian)場強度的不同使(shi)得一(yi)個凈(jing)力(li)(li)產生(sheng)，這個凈(jing)力(li)(li)被稱為介電(dian)電(dian)泳力(li)(li)。

　　由(you)于(yu)懸(xuan)(xuan)(xuan)浮(fu)于(yu)媒介(jie)(jie)(jie)中的(de)(de)(de)(de)微(wei)(wei)粒(li)與媒介(jie)(jie)(jie)有著(zhu)不同的(de)(de)(de)(de)介(jie)(jie)(jie)電(dian)(dian)(dian)能力（介(jie)(jie)(jie)電(dian)(dian)(dian)常數(shu)），微(wei)(wei)粒(li)會被(bei)移動向(xiang)或者(zhe)更強(qiang)的(de)(de)(de)(de)電(dian)(dian)(dian)場強(qiang)度(du)的(de)(de)(de)(de)方向(xiang)，稱(cheng)為陽(yang)性介(jie)(jie)(jie)電(dian)(dian)(dian)電(dian)(dian)(dian)泳(yong)，或者(zhe)更弱的(de)(de)(de)(de)電(dian)(dian)(dian)場強(qiang)度(du)的(de)(de)(de)(de)方向(xiang)，稱(cheng)之(zhi)為陰性介(jie)(jie)(jie)電(dian)(dian)(dian)電(dian)(dian)(dian)泳(yong)。介(jie)(jie)(jie)電(dian)(dian)(dian)電(dian)(dian)(dian)泳(yong)力的(de)(de)(de)(de)大小(xiao)取決于(yu)懸(xuan)(xuan)(xuan)浮(fu)微(wei)(wei)粒(li)的(de)(de)(de)(de)大小(xiao)，懸(xuan)(xuan)(xuan)浮(fu)微(wei)(wei)粒(li)和(he)所懸(xuan)(xuan)(xuan)浮(fu)媒介(jie)(jie)(jie)的(de)(de)(de)(de)電(dian)(dian)(dian)特性（介(jie)(jie)(jie)電(dian)(dian)(dian)常數(shu)和(he)電(dian)(dian)(dian)導率(lv)），電(dian)(dian)(dian)場強(qiang)度(du)和(he)頻率(lv)，懸(xuan)(xuan)(xuan)浮(fu)媒介(jie)(jie)(jie)的(de)(de)(de)(de)粘(zhan)度(du)等參數(shu)。所以，與電(dian)(dian)(dian)泳(yong)或其(qi)他常規分離(li)方法相比較，介(jie)(jie)(jie)電(dian)(dian)(dian)電(dian)(dian)(dian)泳(yong)擁(yong)有更高的(de)(de)(de)(de)選擇性；更易的(de)(de)(de)(de)控制性；更高的(de)(de)(de)(de)分離(li)提取效率(lv)。

　　此(ci)項技術具有操作簡便(bian)(bian)、非侵入性、運輸方便(bian)(bian)等(deng)優(you)點，尤其在(zai)微流體領域(yu)應(ying)用(yong)廣(guang)(guang)泛。應(ying)用(yong)介(jie)電電泳技術可以便(bian)(bian)捷地(di)實現單細(xi)胞操作、蛋白質分離及檢測(ce)等(deng)操作。此(ci)外，介(jie)電電泳技術在(zai)細(xi)菌檢測(ce)、DNA分離、生物芯(xin)片(pian)制作等(deng)方面也(ye)有著廣(guang)(guang)泛的應(ying)用(yong)。

　　近幾(ji)年，隨(sui)著微型化技(ji)術(shu)(shu)在生物(wu)領域(yu)的(de)廣泛(fan)應用(yong)，介電(dian)電(dian)泳(yong)技(ji)術(shu)(shu)也得(de)到了(le)迅速發展(zhan)。這項技(ji)術(shu)(shu)通過優化電(dian)場參數、改善介質材料等方面的(de)創(chuang)新取(qu)得(de)了(le)很大突破使其在實際(ji)應用(yong)中表現出(chu)更加優異的(de)性能。

　　針(zhen)對介(jie)電(dian)電(dian)泳（EDP）系(xi)統的相(xiang)關測試所需要(yao)的高電(dian)壓驅動，ATA-7000系(xi)列高壓放(fang)大(da)(da)器可(ke)以滿足。ATA-7000系(xi)列高壓放(fang)大(da)(da)器最大(da)(da)輸出電(dian)壓20kVp-p（±10kVp），帶寬（-3dB）DC~100kHz

　　，最大輸出電流40mAp。

　　該系(xi)列高(gao)壓(ya)放(fang)大器(qi)，可應(ying)用于：介(jie)電(dian)(dian)(dian)(dian)(dian)彈性(xing)(xing)體(ti)、軟(ruan)體(ti)機器(qi)人(ren)(ren)、HASEL執行器(qi)(人(ren)(ren)造肌肉)、電(dian)(dian)(dian)(dian)(dian)活性(xing)(xing)聚合物(EAP)、離子(zi)(zi)導(dao)電(dian)(dian)(dian)(dian)(dian)聚合物凝膠膜(ICPF)、氣(qi)動人(ren)(ren)工肌肉(PAM)、電(dian)(dian)(dian)(dian)(dian)粘性(xing)(xing)流(liu)(liu)體(ti)(ER流(liu)(liu)體(ti))、磁流(liu)(liu)變液(ye)(MR液(ye))、鐵電(dian)(dian)(dian)(dian)(dian)測(ce)(ce)試(shi)(shi)儀、壓(ya)電(dian)(dian)(dian)(dian)(dian)驅動與控制(zhi)(zhi)、激光調制(zhi)(zhi)，半導(dao)體(ti)研(yan)究，靜(jing)電(dian)(dian)(dian)(dian)(dian)偏(pian)轉(zhuan)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)變液(ye)，交流(liu)(liu)或直流(liu)(liu)偏(pian)置，粒(li)子(zi)(zi)加速器(qi)，質譜儀，材(cai)料(liao)表征，鐵電(dian)(dian)(dian)(dian)(dian)體(ti)，大氣(qi)等離子(zi)(zi)，介(jie)電(dian)(dian)(dian)(dian)(dian)勢壘放(fang)電(dian)(dian)(dian)(dian)(dian)、介(jie)質阻(zu)擋(dang)放(fang)電(dian)(dian)(dian)(dian)(dian)(DBD)、DBD等離子(zi)(zi)致(zhi)動器(qi)、常壓(ya)等離子(zi)(zi)體(ti)、電(dian)(dian)(dian)(dian)(dian)暈放(fang)電(dian)(dian)(dian)(dian)(dian)、靜(jing)電(dian)(dian)(dian)(dian)(dian)懸浮爐(ELF)、靜(jing)電(dian)(dian)(dian)(dian)(dian)觸覺顯示器(qi)、水樹、介(jie)電(dian)(dian)(dian)(dian)(dian)擊穿測(ce)(ce)試(shi)(shi)、離子(zi)(zi)束(shu)偏(pian)轉(zhuan)、電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)束(shu)偏(pian)轉(zhuan)、電(dian)(dian)(dian)(dian)(dian)泳(yong)、介(jie)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)泳(yong)DEP)、閃光燒結、材(cai)料(liao)極化(hua)、離子(zi)(zi)引擎、粒(li)子(zi)(zi)加速器(qi)、材(cai)料(liao)表征、靜(jing)電(dian)(dian)(dian)(dian)(dian)致(zhi)動器(qi)、靜(jing)電(dian)(dian)(dian)(dian)(dian)紡絲、靜(jing)電(dian)(dian)(dian)(dian)(dian)噴涂(tu)、靜(jing)電(dian)(dian)(dian)(dian)(dian)涂(tu)裝、太陽(yang)能電(dian)(dian)(dian)(dian)(dian)池板(ban)(光伏電(dian)(dian)(dian)(dian)(dian)池)測(ce)(ce)試(shi)(shi)、朗繆(mou)爾探針、電(dian)(dian)(dian)(dian)(dian)光調制(zhi)(zhi)、電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)照相、電(dian)(dian)(dian)(dian)(dian)暈發生器(qi)Scorotron網格(ge)耗(hao)材(cai)、主充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(PCR)、顯影輯、電(dian)(dian)(dian)(dian)(dian)暈充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)用品、感光鼓充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)、靜(jing)電(dian)(dian)(dian)(dian)(dian)吸盤、帶電(dian)(dian)(dian)(dian)(dian)粒(li)子(zi)(zi)束(shu)的(de)靜(jing)電(dian)(dian)(dian)(dian)(dian)偏(pian)轉(zhuan)3D打(da)印(電(dian)(dian)(dian)(dian)(dian)液(ye)動力(EHD)技術的(de)應(ying)用）等。

　　ATA-7050高壓放大器

　　帶寬：（-3dB）DC~5kHz

　　電(dian)壓：10kVp-p（±5kVp）

　　電(dian)流：20mAp

　　功率：100Wp

　　壓(ya)擺率：≥111V/μs

　　總的來說，介電電泳技術是一(yi)種先進的、有效的生物分子操(cao)作(zuo)手(shou)段。它(ta)具有操(cao)作(zuo)方便快捷、應用廣泛(fan)等優點，是當前(qian)最為流行的微流體芯片操(cao)作(zuo)技術之一(yi)，相(xiang)信配合(he)高(gao)壓放大(da)器，可以進一(yi)步推動該領(ling)域發(fa)展。

西安(an)安(an)泰電子是專業(ye)從事功(gong)率放(fang)大器、高壓放大器、功率放大器模塊、功率(lv)信號源(yuan)、射頻(pin)功率(lv)放大器、前置微小信(xin)號放大器、高精度電壓源、高精(jing)度(du)電流源(yuan)等(deng)電子測量儀(yi)器(qi)研發、生產(chan)和銷售的(de)(de)高科技(ji)企業，為(wei)用戶提(ti)供具(ju)(ju)有競爭力(li)的(de)(de)測試(shi)方案。Aigtek已經成(cheng)為(wei)在(zai)業界擁有廣泛產(chan)品線，且(qie)具(ju)(ju)有相(xiang)當(dang)規(gui)模的(de)(de)儀(yi)器(qi)設備供應商，樣機(ji)都支持(chi)免費試(shi)用。如想了解更多功率放大器(qi)等(deng)產(chan)品，請(qing)持(chi)續(xu)關注安泰電子官(guan)網hkdyw.cn或撥打029-88865020。