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 | Proceedings of the IEEE Conference on Nanotechnology |
| Pages | 1723-1727 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2011 Dec 1 |
| Event | 2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States Duration: 2011 Aug 15 → 2011 Aug 19 |
Other
| Other | 2011 11th IEEE International Conference on Nanotechnology, NANO 2011 |
|---|---|
| Country | United States |
| City | Portland, OR |
| Period | 11/8/15 → 11/8/19 |
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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
Cite this
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.
Proceedings of the IEEE Conference on Nanotechnology. 2011. p. 1723-1727 6144473.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Non-collapsible PDMS nanochannel fabrication with tunable width and height using single master mold
AU - Kim, Chang Beom
AU - Chun, Honggu
AU - Chung, Jaehun
AU - Song, Ki Bong
AU - Lee, Sang Hoon
PY - 2011/12/1
Y1 - 2011/12/1
N2 - 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.
AB - 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.
KW - Composite PDMS
KW - Ion preconcentration
KW - Microcontact printing
KW - Nanoslit
KW - Sliding mold method
UR - http://www.scopus.com/inward/record.url?scp=84858951715&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84858951715&partnerID=8YFLogxK
U2 - 10.1109/NANO.2011.6144473
DO - 10.1109/NANO.2011.6144473
M3 - Conference contribution
AN - SCOPUS:84858951715
SN - 9781457715143
SP - 1723
EP - 1727
BT - Proceedings of the IEEE Conference on Nanotechnology
ER -