Abstract
We fabricated ordered micro/nano patterns induced by controlled dewetting on the topographically patterned PS/P4VP bilayer thin film. The method is based on utilizing microimprinting lithography to induce a topographically heterogeneous bilayer film that allows the controlled dewetting upon subsequent thermal annealing. The dewetting that was initiated strictly at the boundary of the thicker and thinner regions was guided by the presence of the topographic structure. The dewetting front velocity of the microdomains in the confined regions was linearly proportional to the measurement time, which enabled us to control the size of the dewet domain with annealing time. In particular, the submicron sized dot arrays between lines were generated with ease when the dewetting was confined into geometry with a few microns in size. The kinetically driven, non-lithographical pattern structures accompanied the pattern reduction to 400%. The pattern arrays on a transparent glass substrate were especially useful for noncircular microlens arrays where the focal length of the lens was easily tunable by controlling the thermal annealing.
| Original language | English |
|---|---|
| Pages (from-to) | 181-186 |
| Number of pages | 6 |
| Journal | Macromolecular Research |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2009 Jan 1 |
| Externally published | Yes |
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Keywords
- Bilayer
- Dewetting
- Microimprinting
- Microlens
- Micropattern
- Self-assembly
ASJC Scopus subject areas
- Chemical Engineering(all)
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
Cite this
Ordered micropatterns by confined dewetting of an imprinted polymer thin film and their microlens application. / Lee, Geuntak; Yoon, Bokyung; Acharya, Himadri; Park, Cheolmin; Huh, June.
In: Macromolecular Research, Vol. 17, No. 3, 01.01.2009, p. 181-186.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ordered micropatterns by confined dewetting of an imprinted polymer thin film and their microlens application
AU - Lee, Geuntak
AU - Yoon, Bokyung
AU - Acharya, Himadri
AU - Park, Cheolmin
AU - Huh, June
PY - 2009/1/1
Y1 - 2009/1/1
N2 - We fabricated ordered micro/nano patterns induced by controlled dewetting on the topographically patterned PS/P4VP bilayer thin film. The method is based on utilizing microimprinting lithography to induce a topographically heterogeneous bilayer film that allows the controlled dewetting upon subsequent thermal annealing. The dewetting that was initiated strictly at the boundary of the thicker and thinner regions was guided by the presence of the topographic structure. The dewetting front velocity of the microdomains in the confined regions was linearly proportional to the measurement time, which enabled us to control the size of the dewet domain with annealing time. In particular, the submicron sized dot arrays between lines were generated with ease when the dewetting was confined into geometry with a few microns in size. The kinetically driven, non-lithographical pattern structures accompanied the pattern reduction to 400%. The pattern arrays on a transparent glass substrate were especially useful for noncircular microlens arrays where the focal length of the lens was easily tunable by controlling the thermal annealing.
AB - We fabricated ordered micro/nano patterns induced by controlled dewetting on the topographically patterned PS/P4VP bilayer thin film. The method is based on utilizing microimprinting lithography to induce a topographically heterogeneous bilayer film that allows the controlled dewetting upon subsequent thermal annealing. The dewetting that was initiated strictly at the boundary of the thicker and thinner regions was guided by the presence of the topographic structure. The dewetting front velocity of the microdomains in the confined regions was linearly proportional to the measurement time, which enabled us to control the size of the dewet domain with annealing time. In particular, the submicron sized dot arrays between lines were generated with ease when the dewetting was confined into geometry with a few microns in size. The kinetically driven, non-lithographical pattern structures accompanied the pattern reduction to 400%. The pattern arrays on a transparent glass substrate were especially useful for noncircular microlens arrays where the focal length of the lens was easily tunable by controlling the thermal annealing.
KW - Bilayer
KW - Dewetting
KW - Microimprinting
KW - Microlens
KW - Micropattern
KW - Self-assembly
UR - http://www.scopus.com/inward/record.url?scp=64249152447&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64249152447&partnerID=8YFLogxK
U2 - 10.1007/BF03218676
DO - 10.1007/BF03218676
M3 - Article
AN - SCOPUS:64249152447
VL - 17
SP - 181
EP - 186
JO - Macromolecular Research
JF - Macromolecular Research
SN - 1598-5032
IS - 3
ER -