IMECH-IR  > 非线性力学国家重点实验室
Effects of access resistance on the resistive-pulse caused by translocating of a nanoparticle through a nanopore
Wang JR(王俊荣); Ma J; Ni ZH; Zhang L; Hu GQ(胡国庆); Hu, GQ (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationRSC Advances
2014
Volume4Issue:15Pages:7601-7610
ISSN2046-2069
AbstractRecent experimental studies showed that the access resistance (AR) of a nanopore with a low thickness-to-diameter aspect ratio plays an important role in particle translocation. The existing theories usually only consider the AR without the presence of particles in the pore systems. Based on the continuum model, we systematically investigate the current change caused by nanoparticle translocation in different nanopore configurations. From numerical results, an analytical model is proposed to estimate the influence of the AR on the resistive-pulse amplitude, i.e., the ratio of the AR to the pore resistance. The current change is first predicted by our model for nanoparticles and nanopores with a wide range of sizes at the neutral surface charge. Subsequently, the effect of surface charges is studied. The results show that resistive-pulse amplitude decreases with the increasing surface charge of the nanoparticle or the nanopore. We also find that the shape of the position-dependent resistive-pulse might be distorted significantly at low bulk concentration due to concentration polarization. This study provides a deep insight into the AR in particle-pore systems and could be useful in designing nanopore-based detection devices.
KeywordStress Ratio Crack Growth Rate Fatigue Strength Very-high-cycle Fatigue Metallic Materials
Subject AreaChemistry
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000330241000035
Funding OrganizationThis work was financially supported by MOST(2011CB707604), NSFC (11272321, 11102214), and MOST(2011CB707601). We thank Drs Xu Zheng and Zhanhua Silber-Li at LNM for the helpful discussion.
DepartmentLNM微纳米流体力学
Classification二类/Q2
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48772
Collection非线性力学国家重点实验室
Corresponding AuthorHu, GQ (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Wang JR,Ma J,Ni ZH,et al. Effects of access resistance on the resistive-pulse caused by translocating of a nanoparticle through a nanopore[J]. RSC Advances,2014,4(15):7601-7610.
APA Wang JR,Ma J,Ni ZH,Zhang L,Hu GQ,&Hu, GQ .(2014).Effects of access resistance on the resistive-pulse caused by translocating of a nanoparticle through a nanopore.RSC Advances,4(15),7601-7610.
MLA Wang JR,et al."Effects of access resistance on the resistive-pulse caused by translocating of a nanoparticle through a nanopore".RSC Advances 4.15(2014):7601-7610.
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