本文選題：電極形狀 + 電極間距與碳納米管長(zhǎng)度之比��； 參考：《傳感技術(shù)學(xué)報(bào)》2017年06期

【摘要】：碳納米管的結(jié)構(gòu)以及微電極的物性參數(shù)是微納器件制備過程中影響介電泳效率與精度的重要因素。微電極形狀和電極間距與碳納米管長(zhǎng)度之比(λ)是兩個(gè)與器件制造成本緊密相關(guān)的可控介電泳參數(shù)。本文根據(jù)有限元方法,研究了這兩個(gè)參數(shù)對(duì)于介電泳力的影響規(guī)律。通過對(duì)3種電極下的碳納米管介電泳速度進(jìn)行歸一化處理,結(jié)果表明碳納米管在分散液中的介電泳速度受電極形狀影響較小。而相比于電極形狀,λ對(duì)介電泳力的影響更加顯著。雖然電極間距越小越有利于碳納米管的組裝,但是考慮微電極加工難度與成本,認(rèn)為λ在0.5~1.0為碳納米管組裝的優(yōu)化區(qū)間。根據(jù)介電泳組裝實(shí)驗(yàn)需要,給出了溶液閾值濃度修正表達(dá)式。本研究對(duì)于提高介電泳組裝效率和實(shí)驗(yàn)精度具有一定的理論指導(dǎo)意義。
[Abstract]:The structure of carbon nanotubes (CNTs) and the physical parameters of microelectrodes are important factors affecting the efficiency and accuracy of dielectric electrophoresis. Microelectrode shape and the ratio of electrode spacing to carbon nanotube length (位) are two controllable dielectric electrophoretic parameters which are closely related to the fabrication cost of the device. Based on the finite element method, the influence of these two parameters on the dielectric electrophoretic force is studied in this paper. The results show that the dielectric electrophoretic rate of carbon nanotubes in the dispersions is less affected by the electrode shape through the normalization treatment of the dielectric electrophoresis rate of carbon nanotubes under three kinds of electrodes. Compared with the electrode shape, 位 has a more significant effect on the dielectric electrophoresis force. Although the smaller the electrode spacing is, the better the assembly of carbon nanotubes is, but considering the difficulty and cost of microelectrode fabrication, it is considered that 位 is the optimal range of carbon nanotubes assembly at 0.5 渭 m 1.0. According to the needs of the dielectric electrophoresis assembly experiment, the modified expression of solution threshold concentration is given. This study is of theoretical significance for improving the assembly efficiency and experimental accuracy of dielectric electrophoresis.
【作者單位】： 太原理工大學(xué)信息工程學(xué)院微納系統(tǒng)研究中心;新型傳感器與智能控制教育部與山西省重點(diǎn)實(shí)驗(yàn)室;高端煤礦機(jī)械裝備協(xié)同創(chuàng)新中心;
【基金】：山西省基礎(chǔ)研究計(jì)劃項(xiàng)目(2015021092) 國(guó)家863項(xiàng)目(2015AA042601) 國(guó)家自然科學(xué)基金重點(diǎn)支持項(xiàng)目(61471255,61474079)
【分類號(hào)】：TB383.1;TQ127.11

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本文編號(hào)：1911343