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 |
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論文番号 | 013108 |
ジャーナル | Applied Physics Letters |
巻 | 103 |
号 | 1 |
DOI | |
出版ステータス | 出版済み - 7月 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)