Trapping and identifying single-nanoparticles using a low-aspect-ratio nanopore

Makusu Tsutsui, Yoichi Maeda, Yuhui He, Sadato Hongo, Sou Ryuzaki, Satoyuki Kawano, Tomoji Kawai, Masateru Taniguchi

研究成果: Contribution to journalArticle査読

24 被引用数 (Scopus)

抄録

Manipulation of particles and molecules in fluid is a fundamental technology in biosensors. Here, we report electrical trapping and identification of single-nanoparticles using a low-aspect-ratio nanopore. Particle trapping and detrapping are implemented through a control of the cross-membrane electrophoretic voltage. This electrical method is found to enable placing an individual nanoparticle in vicinity of a lithographically-defined nanopore by virtue of the balance between the two counteracting factors, electrostatic and electroosmotic forces. We also demonstrate identification of trapped nanoparticles by the ionic current through the particle-pore gap space. This technique may find applications in electrode-embedded nanopore sensors.

本文言語英語
論文番号013108
ジャーナルApplied Physics Letters
103
1
DOI
出版ステータス出版済み - 7 1 2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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