An on-demand micro/nano-convertible channel using an elastomeric nanostructure for multipurpose use
SCOPUS
- Title
- An on-demand micro/nano-convertible channel using an elastomeric nanostructure for multipurpose use
- Authors
- HYUKJIN, J KWON; HONG, SEONG KYUNG; MIN, SOO LEE; LIM, GEUN BAE
- Date Issued
- 2019-09
- Publisher
- ROYAL SOCIETY OF CHEMISTRY
- Abstract
- Recently, nanochannels have been widely adopted in microfluidic systems, especially for biosensing and bio-concentrators. Here, we report an on-demand micro/nano-convertible channel, which consists of a simple configuration of elastic nanostructure underneath a single microchannel. By the degree of pressure applied by a pushrod, the microchannel starts to compress into a size-tunable micro- or nano-porous channel. In this approach, under an electric field, we have successfully derived the electrokinetic characteristics of three different regimes: (1) microchannel regime, (2) microporous regime, and (3) nanochannel regime. Utilizing the practical advantage of the transition between regimes with its low cost and easy integration, we demonstrate the pre-concentration and label-free sensing of DNA using a single on-demand convertible channel. Moreover, we demonstrate an ionic diode by applying asymmetric pressure on the elastic nanostructure to create an asymmetric geometry. We believe that the on-demand convertible channel holds potential for promising applications in bioanalytical and iontronic fields.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100520
- DOI
- 10.1039/C8LC00997J
- ISSN
- 1473-0197
- Article Type
- Article
- Citation
- LAB ON A CHIP, vol. 19, no. 18, page. 2958 - 2965, 2019-09
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.