Non-collapsible PDMS nanochannel fabrication with tunable width and height using single master mold

Chang Beom Kim; Honggu Chun; Jaehun Chung; Ki Bong Song; Sang Hoon Lee

doi:10.1109/NANO.2011.6144473

Non-collapsible PDMS nanochannel fabrication with tunable width and height using single master mold

Chang Beom Kim, Honggu Chun, Jaehun Chung, Ki Bong Song, Sang Hoon Lee

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A tunable polydimethylsiloxane (PDMS) nanoslit fabrication process was developed for biological sample manipulation. A microcontact printing (CP) of laterally spreading self-assembled hexadecanethiol (HDT) layer, combined with in-situ curing of a sliding SU-8 droplet, enabled precise and independent tuning of a nanoslit-mold width and height using single CP master mold. The SU-8 nanoslit-mold was replicated using a hard-soft composite PDMS to prevent channel collapse at low (< 0.2) aspect ratio (height over width). The fluidic characteristics as well as dimensions of nanoslits fabricated with various conditions are analyzed using fluorescein sample and AFM images. Finally, concentration polarization-based sample preconcentration is successfully demonstrated at the nanoslit boundary where an electric double layer is overlapped.

Original language	English
Title of host publication	2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Pages	1723-1727
Number of pages	5
DOIs	https://doi.org/10.1109/NANO.2011.6144473
Publication status	Published - 2011
Event	2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States Duration: 2011 Aug 15 → 2011 Aug 19

Publication series

Name	Proceedings of the IEEE Conference on Nanotechnology
ISSN (Print)	1944-9399
ISSN (Electronic)	1944-9380

Other

Other	2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Country	United States
City	Portland, OR
Period	11/8/15 → 11/8/19

Keywords

Composite PDMS
Ion preconcentration
Microcontact printing
Nanoslit
Sliding mold method

ASJC Scopus subject areas

Bioengineering
Electrical and Electronic Engineering
Materials Chemistry
Condensed Matter Physics

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10.1109/NANO.2011.6144473

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Non-collapsible PDMS nanochannel fabrication with tunable width and height using single master mold. / Kim, Chang Beom; Chun, Honggu; Chung, Jaehun; Song, Ki Bong; Lee, Sang Hoon.

2011 11th IEEE International Conference on Nanotechnology, NANO 2011. 2011. p. 1723-1727 6144473 (Proceedings of the IEEE Conference on Nanotechnology).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, CB, Chun, H, Chung, J, Song, KB & Lee, SH 2011, Non-collapsible PDMS nanochannel fabrication with tunable width and height using single master mold. in 2011 11th IEEE International Conference on Nanotechnology, NANO 2011., 6144473, Proceedings of the IEEE Conference on Nanotechnology, pp. 1723-1727, 2011 11th IEEE International Conference on Nanotechnology, NANO 2011, Portland, OR, United States, 11/8/15. https://doi.org/10.1109/NANO.2011.6144473

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abstract = "A tunable polydimethylsiloxane (PDMS) nanoslit fabrication process was developed for biological sample manipulation. A microcontact printing (CP) of laterally spreading self-assembled hexadecanethiol (HDT) layer, combined with in-situ curing of a sliding SU-8 droplet, enabled precise and independent tuning of a nanoslit-mold width and height using single CP master mold. The SU-8 nanoslit-mold was replicated using a hard-soft composite PDMS to prevent channel collapse at low (< 0.2) aspect ratio (height over width). The fluidic characteristics as well as dimensions of nanoslits fabricated with various conditions are analyzed using fluorescein sample and AFM images. Finally, concentration polarization-based sample preconcentration is successfully demonstrated at the nanoslit boundary where an electric double layer is overlapped.",

keywords = "Composite PDMS, Ion preconcentration, Microcontact printing, Nanoslit, Sliding mold method",

author = "Kim, {Chang Beom} and Honggu Chun and Jaehun Chung and Song, {Ki Bong} and Lee, {Sang Hoon}",

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