| Biphasic Resistive Pulses and Ion Concentration Modulation during Particle Translocation through Cylindrical Nanopores | |
| Alternative Title | JOURNAL OF PHYSICAL CHEMISTRY C |
Chen KK; Shan L; He SY; Hu GQ(胡国庆) ; Meng YG; Tian Y; Tian, Y (reprint author), Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China.
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| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
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| 2015-04-16 | |
| Volume | 119Issue:15Pages:8329-8335 |
| ISSN | 1932-7447 |
| Abstract | We investigated the biphasic resistive pulses during particle translocation through cylindrical nanopores at low salt concentration by simulation, and the effects of electrolyte concentration, surface charge, electric potential, and pore geometry were systematically discussed. The formation of positive peaks in the pulses is ascribed to the surface charge on the particle and the pore. The peak current enhancement/decline ratio increases linearly with the particle surface charge density but decreases with the salt concentration increase. We find that there is an optimum electric potential for the peak current enhancement ratio to reach the maximum value. When a negatively charged particle is at the orifice of the pore on the low/high potential side, the ion concentration inside and around the pore is significantly depleted/enriched, while inverse electric potential or inverse surface charge has an opposite effect. The extent of such ion modulation is larger with a longer pore. The peak current enhancement/decline ratio is quantitatively linked to the percent of ion concentration enrichment/depletion inside and around the pore, by considering particle occupied volume and concentration change. |
| DOI | 10.1021/acs.jpcc.5b00047 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000353249500042 |
| WOS Keyword | SOLID-STATE NANOPORES ; SINGLE-NANOPARTICLE DETECTION ; DNA TRANSLOCATION ; ACCESS RESISTANCE ; SHAPED NANOPORES ; GLASS NANOPORES ; ASPECT-RATIO ; PORE ; CHARGE ; SIMULATION |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| Funding Organization | National Basic Research Program of China [2011CB707603, 2011CB707604] ; National Natural Science Foundation of China [51175281] |
| Department | LNM微纳米流体力学 |
| Classification | 一类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/49981 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Tian, Y (reprint author), Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China. |
| Recommended Citation GB/T 7714 | Chen KK,Shan L,He SY,et al. Biphasic Resistive Pulses and Ion Concentration Modulation during Particle Translocation through Cylindrical Nanopores[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(15):8329-8335. |
| APA | Chen KK.,Shan L.,He SY.,Hu GQ.,Meng YG.,...&Tian, Y .(2015).Biphasic Resistive Pulses and Ion Concentration Modulation during Particle Translocation through Cylindrical Nanopores.JOURNAL OF PHYSICAL CHEMISTRY C,119(15),8329-8335. |
| MLA | Chen KK,et al."Biphasic Resistive Pulses and Ion Concentration Modulation during Particle Translocation through Cylindrical Nanopores".JOURNAL OF PHYSICAL CHEMISTRY C 119.15(2015):8329-8335. |
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| IMCAS-J2015-083.pdf（2911KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-ND | View Download | |
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