Morphology of nanoimprinted polyimide films fabricated via a controlled thermal history

Sudu Siqing, Hui Wu, Atsushi Takahara

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Fabricating nanopatterns on polyimide (PI) films directly by nanoimprint lithography (NIL) is difficult owing to the high glass transition temperature (T g). In this study, a nanopatterned PI film was successfully obtained by nanoimprinting poly(amic acid) (PAA) film and curing it afterward. Differential scanning calorimetry, thermogravimetry and dynamic mechanical analysis were carried out to study the state of thermal molecular motion in PAA thick films that have the same content of residual solvent as the PAA thin films used in NIL. The thermal and dynamic mechanical behaviors of PI thick films were studied for comparison. An appropriate nanoimprinting process was proposed based on an understanding of the thermal and dynamic mechanical properties of PAA and PI films. Atomic force microscopy showed that the line pattern was transferred without distortion from the PAA film to the PI film, even though a larger shrinkage took place during the hard baking.

Original languageEnglish
Pages (from-to)1036-1041
Number of pages6
JournalPolymer Journal
Volume44
Issue number10
DOIs
Publication statusPublished - Oct 1 2012

Fingerprint

Polyimides
Nanoimprint lithography
Thick films
Dynamic mechanical analysis
Curing
Thermogravimetric analysis
Hot Temperature
Differential scanning calorimetry
Atomic force microscopy
Thin films
Mechanical properties
Acids

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Morphology of nanoimprinted polyimide films fabricated via a controlled thermal history. / Siqing, Sudu; Wu, Hui; Takahara, Atsushi.

In: Polymer Journal, Vol. 44, No. 10, 01.10.2012, p. 1036-1041.

Research output: Contribution to journalArticle

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