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
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
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
T3 - Proceedings of the IEEE Conference on Nanotechnology
SP - 1723
EP - 1727
BT - 2011 11th IEEE International Conference on Nanotechnology, NANO 2011
T2 - 2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Y2 - 15 August 2011 through 19 August 2011
ER -