Review of electric discharge microplasmas generated in highly fluctuating fluids: Characteristics and application to nanomaterials synthesisa)
Review of electric discharge microplasmas generated in highly fluctuating fluids: Characteristics and application to nanomaterials synthesisa)
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高波动流体中产生的放电微等离子体的综述：特性及其在纳米材料合成中的应用a)
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
K. Terashima
中科院分区：
文献类型：
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作者：
S. Stauss;H. Muneoka;K. Urabe;K. Terashima
基于等离子体的新型纳米材料和纳米结构的制造对于开发下一代电子器件和绿色能源应用是不可或缺的。特别是，控制等离子体与材料界面之间的相互作用，以及等离子体的起伏，对于进一步发展基于等离子体的工艺和自下而上生长纳米材料至关重要。超临界流体中产生的放电微等离子体是一类特殊的高压等离子体，分子尺度上的涨落影响着放电性质和纳米材料可能的自下而上的生长。本文讨论了在临界点附近观察到的直流微等离子体的异常现象，即击穿电压的局部下降。这种反常行为被认为是由于临界点附近团簇的形成导致电离势的降低，以及临界点附近高密度涨落导致扩展的电子平均自由程的形成所致。在介质阻挡微放电发生在临界点附近的情况下，超临界流体的高密度涨落仍然存在。综述的最后部分讨论了超临界流体中产生的放电在纳米材料合成中的应用，特别是通过在传统间歇式和连续流动微反应器中产生的微等离子体合成分子金刚石--即所谓的类金刚石。
Plasma-based fabrication of novel nanomaterials and nanostructures is indispensible for the development of next-generation electronic devices and for green energy applications. In particular, controlling the interactions between plasmas and materials interfaces, and the plasma fluctuations, is crucial for further development of plasma-based processes and bottom-up growth of nanomaterials. Electric discharge microplasmas generated in supercritical fluids represent a special class of high-pressure plasmas, where fluctuations on the molecular scale influence the discharge properties and the possible bottom-up growth of nanomaterials. This review discusses an anomaly observed for direct current microplasmas generated near the critical point, a local decrease in the breakdown voltage. This anomalous behavior is suggested to be caused by the concomitant decrease of the ionization potential due to the formation of clusters near the critical point, and the formation of extended electron mean free paths caused by the high-density fluctuation near the critical point. It is also shown that in the case of dielectric barrier microdischarges generated close to the critical point, the high-density fluctuation of the supercritical fluid persists. The final part of the review discusses the application of discharges generated in supercritical fluids to synthesis of nanomaterials, in particular, molecular diamond—so-called diamondoids—by microplasmas generated inside conventional batch-type and continuous flow microreactors.
影响因子：
158.5
作者：
Reisberg, B;Doody, R;Mobius, HJ
通讯作者：
Mobius, HJ