Nanoscale dynamics of Joule heating and bubble nucleation in a solid-state nanopore.
Nanoscale dynamics of Joule heating and bubble nucleation in a solid-state nanopore.
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DOI：
10.1103/physreve.93.013124
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发表时间：
2016-01
期刊：
影响因子：
--
通讯作者：
Golovchenko JA
中科院分区：
文献类型：
--
作者：
Levine EV;Burns MM;Golovchenko JA
提出了纳米孔中电解溶液焦耳加热的数学模型。该模型耦合了导致纳米孔内电解液快速和极端过热的电动力学和热动力学。该模型通过有限元计算实现，得到了纳米孔区的时间和空间分辨的温度分布。在实验上观察到汽泡的爆炸成核之前，预计将达到接近过热热力学极限的温度。对这种温度分布的了解可以评估相关现象，包括气泡成核动力学、弛豫振荡和气泡动力学。47.55.dp、47.55.db、85.35-p、05.70Fh
We present a mathematical model for Joule heating of an electrolytic solution in a nanopore. The model couples the electrical and thermal dynamics responsible for rapid and extreme superheating of the electrolyte within the nanopore. The model is implemented numerically with a finite element calculation, yielding a time and spatially resolved temperature distribution in the nanopore region. Temperatures near the thermodynamic limit of superheat are predicted to be attained just before the explosive nucleation of a vapor bubble is observed experimentally. Knowledge of this temperature distribution enables the evaluation of related phenomena including bubble nucleation kinetics, relaxation oscillation, and bubble dynamics. 47.55.dp, 47.55.db, 85.35.-p, 05.70Fh