[1]曹罚君,高飞,陈敏华,等.微管道内溶液的等效电阻与外加电压相关性[J].东南大学学报(自然科学版),2009,39(5):913-917.[doi:10.3969/j.issn.1001-0505.2009.05.009]
 Cao Fajun,Gao Fei,Chen Minhua,et al.Relationship between equivalent resistance of solution in microtubes and applied voltage[J].Journal of Southeast University (Natural Science Edition),2009,39(5):913-917.[doi:10.3969/j.issn.1001-0505.2009.05.009]
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微管道内溶液的等效电阻与外加电压相关性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第5期
页码:
913-917
栏目:
数学、物理学、力学
出版日期:
2009-09-20

文章信息/Info

Title:
Relationship between equivalent resistance of solution in microtubes and applied voltage
作者:
曹罚君 高飞 陈敏华 陈云飞
东南大学江苏省微纳生物医疗器械设计与制造重点实验室, 南京 211189; 东南大学机械工程学院, 南京 211189
Author(s):
Cao Fajun Gao Fei Chen Minhua Chen Yunfei
Jiangsu Key Laboratory for Design and Manufacture of Micro-nano Biomedical Instruments, Southeast University, Nanjing 211189, China
School of Mechanical Engineering, Southeast University, Nanjing 211189, China
关键词:
微管 等效电阻特性 电极极化 离子电流
Keywords:
microtube equivalent resistance characteristics electric polarization ionic current
分类号:
O552.424
DOI:
10.3969/j.issn.1001-0505.2009.05.009
摘要:
搭建测量微米级管道内溶液电阻的实验平台,研究了直径在50~300 μm玻璃管道内溶液的等效电阻,建立了在直流小电压作用下,微管内溶液的等效电阻与外加电压的相互关系,并对实验中的误差因素进行了分析.结果表明:在一定的电压范围内,微管内溶液的等效电阻与施加在两端的电压成非线性关系.在电压比较小的初始阶段,随着电压值的增大,微管的等效电阻值迅速减少; 当电压增大到临界值(4~6 V)时,等效电阻的变化量减小,最后趋于一定的阻值,该阻值近似为对应本体溶液的电阻值.研究结果表明在电压较小的初始阶段,电解及电极极化作用主导微管等效电阻,随着电压的增大,由于离子电流的增加,这种影响会迅速减少.
Abstract:
A test rig was set up to measure the equivalent resistance of the solution in microtubes with diameters ranging from 50 to 300 μm. The relationship between the equivalent resistance and the direct voltage applied on the two ends of the microtube was built up, and the error was analyzed. The experimental results show that the relationship between the value of the equivalent resistance and the voltage is nonlinear. The equivalent resistance decreases rapidly as the applied voltage increases in a relatively small range. When the voltage exceeds a critical value(4 to 6 V), the decrease of resistance is reduced and finally the equivalent resistance approximately equals the resistance of the corresponding bulk solution. It is believed that the electrolysis and the electric polarization have important influences on the equivalent resistance of the solution in microtubes when voltage is small. At high voltages, the influences decrease quickly because of the relatively large ionic current.

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备注/Memo

备注/Memo:
作者简介: 曹罚君(1982—), 男, 硕士生; 陈云飞(联系人), 男, 博士, 教授,博士生导师,yunfeichen@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50875047,50776017).
引文格式: 曹罚君,高飞,陈敏华,等.微管道内溶液的等效电阻与外加电压相关性[J].东南大学学报:自然科学版,2009,39(5):913-917. [doi:10.3969/j.issn.1001-0505.2009.05.009]
更新日期/Last Update: 2009-09-20