Soft nanoimprint lithography

Y. Chen, E. Roy, Y. Kanamori, M. Belotti, D. Decanini

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

We developed a UV assisted soft nanoimprint lithography (UV-SNIL) that can be applied for the reproduction of nanometer features over large areas. Based on a simple argument deduced from the Navier-Stokes equation, we suggest several solutions to enhance the imprinting process ability. One of the solutions is to use tri-layer soft stamps, which consists of a rigid carrier, a low Young's module buffer and a top layer supporting nanostructure patterns to be replicated. Typically, the buffer and the top layer are made of polydimethylsiloxane (PDMS) of 5 mm thickness and polymethylmetacrylate (PMMA) of 10-50 μm thickness respectively. Patterning of the stamp top layer can be done in three different ways, i.e., spin coating, nano-compression and direct writing, all resulting in 100 nm features over a large wafer area. Another solution is to use a bilayer resist system for which imprinting is performed on the top layer while the final pattern is obtained by transferring the top layer image into the bottom layer by reactive ion etching. Comparing to other imprint techniques, UV-SNIL works at room temperature and low pressure, which is applicable for a wafer-scale replication at high throughput. For the research purpose, we also demonstrate nanostructure fabrication by lift-off techniques.

Original languageEnglish
Article number38
Pages (from-to)283-288
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5645
DOIs
Publication statusPublished - 2005 Jun 15
Externally publishedYes
EventAdvanced Microlithography Technologies - Beijing, China
Duration: 2004 Nov 82004 Nov 10

Keywords

  • Molding pattern replication
  • Nanofabrication
  • Nanoimprint
  • Soft lithography
  • Soft stamps

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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