Current rectification with poly-L-lysine-coated quartz nanopipettes

Senkei Umehara, Nader Pourmand, Chris D. Webb, Ronald W. Davis, Kenji Yasuda, Miloslav Karhanek

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

Ion current rectification with quartz nanopipette electrodes was investigated through the control of the surface charge. The presence and absence of a positively charged poly-L-lysine (PLL) coating resulted in the rectified current with opposite polarity. The results agreed with the theories developed for current-rectifying conical nanopores, suggesting the similar underlying mechanism among asymmetric nanostructure in general. This surface condition dependence can be used as the fundamental principle of multi-purpose real-time in vivo biosensors.

Original languageEnglish
Pages (from-to)2486-2492
Number of pages7
JournalNano Letters
Volume6
Issue number11
DOIs
Publication statusPublished - 2006 Nov
Externally publishedYes

Fingerprint

Quartz
Nanopores
lysine
rectification
Surface charge
Biosensors
Lysine
Nanostructures
quartz
Ions
Coatings
Electrodes
bioinstrumentation
ion currents
polarity
coatings
electrodes

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Umehara, S., Pourmand, N., Webb, C. D., Davis, R. W., Yasuda, K., & Karhanek, M. (2006). Current rectification with poly-L-lysine-coated quartz nanopipettes. Nano Letters, 6(11), 2486-2492. https://doi.org/10.1021/nl061681k

Current rectification with poly-L-lysine-coated quartz nanopipettes. / Umehara, Senkei; Pourmand, Nader; Webb, Chris D.; Davis, Ronald W.; Yasuda, Kenji; Karhanek, Miloslav.

In: Nano Letters, Vol. 6, No. 11, 11.2006, p. 2486-2492.

Research output: Contribution to journalArticle

Umehara, S, Pourmand, N, Webb, CD, Davis, RW, Yasuda, K & Karhanek, M 2006, 'Current rectification with poly-L-lysine-coated quartz nanopipettes', Nano Letters, vol. 6, no. 11, pp. 2486-2492. https://doi.org/10.1021/nl061681k
Umehara S, Pourmand N, Webb CD, Davis RW, Yasuda K, Karhanek M. Current rectification with poly-L-lysine-coated quartz nanopipettes. Nano Letters. 2006 Nov;6(11):2486-2492. https://doi.org/10.1021/nl061681k
Umehara, Senkei ; Pourmand, Nader ; Webb, Chris D. ; Davis, Ronald W. ; Yasuda, Kenji ; Karhanek, Miloslav. / Current rectification with poly-L-lysine-coated quartz nanopipettes. In: Nano Letters. 2006 ; Vol. 6, No. 11. pp. 2486-2492.
@article{2cb5d545b851460081ddf09a58a3c28a,
title = "Current rectification with poly-L-lysine-coated quartz nanopipettes",
abstract = "Ion current rectification with quartz nanopipette electrodes was investigated through the control of the surface charge. The presence and absence of a positively charged poly-L-lysine (PLL) coating resulted in the rectified current with opposite polarity. The results agreed with the theories developed for current-rectifying conical nanopores, suggesting the similar underlying mechanism among asymmetric nanostructure in general. This surface condition dependence can be used as the fundamental principle of multi-purpose real-time in vivo biosensors.",
author = "Senkei Umehara and Nader Pourmand and Webb, {Chris D.} and Davis, {Ronald W.} and Kenji Yasuda and Miloslav Karhanek",
year = "2006",
month = "11",
doi = "10.1021/nl061681k",
language = "English",
volume = "6",
pages = "2486--2492",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "11",

}

TY - JOUR

T1 - Current rectification with poly-L-lysine-coated quartz nanopipettes

AU - Umehara, Senkei

AU - Pourmand, Nader

AU - Webb, Chris D.

AU - Davis, Ronald W.

AU - Yasuda, Kenji

AU - Karhanek, Miloslav

PY - 2006/11

Y1 - 2006/11

N2 - Ion current rectification with quartz nanopipette electrodes was investigated through the control of the surface charge. The presence and absence of a positively charged poly-L-lysine (PLL) coating resulted in the rectified current with opposite polarity. The results agreed with the theories developed for current-rectifying conical nanopores, suggesting the similar underlying mechanism among asymmetric nanostructure in general. This surface condition dependence can be used as the fundamental principle of multi-purpose real-time in vivo biosensors.

AB - Ion current rectification with quartz nanopipette electrodes was investigated through the control of the surface charge. The presence and absence of a positively charged poly-L-lysine (PLL) coating resulted in the rectified current with opposite polarity. The results agreed with the theories developed for current-rectifying conical nanopores, suggesting the similar underlying mechanism among asymmetric nanostructure in general. This surface condition dependence can be used as the fundamental principle of multi-purpose real-time in vivo biosensors.

UR - http://www.scopus.com/inward/record.url?scp=33846121634&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846121634&partnerID=8YFLogxK

U2 - 10.1021/nl061681k

DO - 10.1021/nl061681k

M3 - Article

C2 - 17090078

AN - SCOPUS:33846121634

VL - 6

SP - 2486

EP - 2492

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 11

ER -