Rectification of Ion Current Determined by the Nanopore Geometry: Experiments and Modelling

doi:10.1088/0256-307X/33/10/108501

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 精准医疗单分子诊断技术研究中心

	Rectification of Ion Current Determined by the Nanopore Geometry: Experiments and Modelling
	Zhou, Da-Ming; Deng, Yun-Sheng; Ying, Cui-Feng; Zhang, Yue-Chuan; Feng, Yan-Xiao; Huang, Qi-Meng; Liang, Li-Yuan; Wang, De-Qiang
刊名	CHINESE PHYSICS LETTERS
	2016
卷号	33 期号:10
ISSN号	0256-307X
DOI	10.1088/0256-307X/33/10/108501
通讯作者	Wang, DQ (reprint author), Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China.
英文摘要	We provide a way to precisely control the geometry of a SiNx nanopore by adjusting the applied electric pulse. The pore is generated by applying the current pulse across a SiNx membrane, which is immersed in potassium chloride solution. We can generate single conical and cylindrical pores with different electric pulses. A theoretical model based on the Poisson and Nernst-Planck equations is employed to simulate the ion transport properties in the channel. In turn, we can analyze pore geometries by fitting the experimental current-voltage (I-V) curves. For the conical pores with a pore size of 0.5-2nm in diameter, the slope angles are around -2.5 degrees to -10 degrees. Moreover, the pore orifice can be enlarged slightly by additional repeating pulses. The conic pore lumen becomes close to a cylindrical channel, resulting in a symmetry I-V transport under positive and negative biases. A qualitative understanding of these effects will help us to prepare useful solid-nanopores as demanded.
语种	英语
WOS记录号	WOS:000386125200038
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/4337]
专题	精准医疗单分子诊断技术研究中心
作者单位	(1) Chongqing Inst Green & Intelligent Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China; (2) Nankai Univ, Sch Phys, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China; (3) Univ Elect Sci & Technol China, Chengdu 611731, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Da-Ming,Deng, Yun-Sheng,Ying, Cui-Feng,et al. Rectification of Ion Current Determined by the Nanopore Geometry: Experiments and Modelling[J]. CHINESE PHYSICS LETTERS,2016,33(10).
APA	Zhou, Da-Ming.,Deng, Yun-Sheng.,Ying, Cui-Feng.,Zhang, Yue-Chuan.,Feng, Yan-Xiao.,...&Wang, De-Qiang.(2016).Rectification of Ion Current Determined by the Nanopore Geometry: Experiments and Modelling.CHINESE PHYSICS LETTERS,33(10).
MLA	Zhou, Da-Ming,et al."Rectification of Ion Current Determined by the Nanopore Geometry: Experiments and Modelling".CHINESE PHYSICS LETTERS 33.10(2016).