Abstract
Colorless polyimide (CPI) is a promising material for flexible substrates because of its excellent mechanical hardness, chemical durability, thermal stability, and high optical transmittance. In particular, its superior durability under heating and mechanical forces compared with other polymeric materials makes polyimide compatible for industrial applications. Thus, it has been actively investigated for use in preparing flexible and transparent substrates for optical devices. Nevertheless, there is little research on the direct pattering of CPI to form structures with various optical functions. In this research, a simple and cost-effective process involving the patterning of optically functional structures and imidization via thermal nanoimprint lithography (NIL) was developed. CPI films patterned with structures such as nanoscale and microscale cones were fabricated by thermal NIL, and their optical functions, including their anti-reflection and high scattering properties, were demonstrated by UV–vis analysis. Moreover, the patterned CPI film has an excellent thermal stability and a mechanical hardness up to 1.12 GPa; this value was nearly maintained even at 400 °C. Therefore, nano- to microscale optical patterns of CPI were successfully formed, and these structures are stable towards mechanical damage and high temperatures.
| Original language | English |
|---|---|
| Pages (from-to) | 881-886 |
| Number of pages | 6 |
| Journal | Applied Surface Science |
| Volume | 423 |
| DOIs | |
| Publication status | Published - 2017 Nov 30 |
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Keywords
- Colorless polyimide
- Nano-patterning
- Optical pattern
- Thermal nanoimprint lithography
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
Fabrication of optically-functionalized colorless polyimide patterns with high durability. / Jun, Junho; Lee, Ji Hyun; Choi, Hak Jong; Moon, Sungjin; Kim, Il Doo; Lee, Heon.
In: Applied Surface Science, Vol. 423, 30.11.2017, p. 881-886.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of optically-functionalized colorless polyimide patterns with high durability
AU - Jun, Junho
AU - Lee, Ji Hyun
AU - Choi, Hak Jong
AU - Moon, Sungjin
AU - Kim, Il Doo
AU - Lee, Heon
PY - 2017/11/30
Y1 - 2017/11/30
N2 - Colorless polyimide (CPI) is a promising material for flexible substrates because of its excellent mechanical hardness, chemical durability, thermal stability, and high optical transmittance. In particular, its superior durability under heating and mechanical forces compared with other polymeric materials makes polyimide compatible for industrial applications. Thus, it has been actively investigated for use in preparing flexible and transparent substrates for optical devices. Nevertheless, there is little research on the direct pattering of CPI to form structures with various optical functions. In this research, a simple and cost-effective process involving the patterning of optically functional structures and imidization via thermal nanoimprint lithography (NIL) was developed. CPI films patterned with structures such as nanoscale and microscale cones were fabricated by thermal NIL, and their optical functions, including their anti-reflection and high scattering properties, were demonstrated by UV–vis analysis. Moreover, the patterned CPI film has an excellent thermal stability and a mechanical hardness up to 1.12 GPa; this value was nearly maintained even at 400 °C. Therefore, nano- to microscale optical patterns of CPI were successfully formed, and these structures are stable towards mechanical damage and high temperatures.
AB - Colorless polyimide (CPI) is a promising material for flexible substrates because of its excellent mechanical hardness, chemical durability, thermal stability, and high optical transmittance. In particular, its superior durability under heating and mechanical forces compared with other polymeric materials makes polyimide compatible for industrial applications. Thus, it has been actively investigated for use in preparing flexible and transparent substrates for optical devices. Nevertheless, there is little research on the direct pattering of CPI to form structures with various optical functions. In this research, a simple and cost-effective process involving the patterning of optically functional structures and imidization via thermal nanoimprint lithography (NIL) was developed. CPI films patterned with structures such as nanoscale and microscale cones were fabricated by thermal NIL, and their optical functions, including their anti-reflection and high scattering properties, were demonstrated by UV–vis analysis. Moreover, the patterned CPI film has an excellent thermal stability and a mechanical hardness up to 1.12 GPa; this value was nearly maintained even at 400 °C. Therefore, nano- to microscale optical patterns of CPI were successfully formed, and these structures are stable towards mechanical damage and high temperatures.
KW - Colorless polyimide
KW - Nano-patterning
KW - Optical pattern
KW - Thermal nanoimprint lithography
UR - http://www.scopus.com/inward/record.url?scp=85021724673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021724673&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2017.06.277
DO - 10.1016/j.apsusc.2017.06.277
M3 - Article
AN - SCOPUS:85021724673
VL - 423
SP - 881
EP - 886
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -