University of Illinois Urbana-Champaign

Soft lithography - materials and applications to plasmonic sensing and surface-enhanced raman scattering

Truong, Tu T.

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https://hdl.handle.net/2142/15547

Description

Title
Soft lithography - materials and applications to plasmonic sensing and surface-enhanced raman scattering
Author(s)
Truong, Tu T.
Issue Date
2010-05-14T20:49:43Z
Director of Research (if dissertation) or Advisor (if thesis)
Rogers, John A.
Doctoral Committee Chair(s)
Rogers, John A.
Committee Member(s)
  • Nuzzo, Ralph G.
  • Kenis, Paul J.A.
  • Bailey, Ryan C.
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • Soft lithography
  • plasmonic crystals
  • Surface enhanced Raman spectroscopy (SERS)
  • Raman scattering
  • polydimethylsiloxane
  • surface plasmon
Abstract
The interest of unconventional techniques for nanofabrication has grown exponentially in recent years due to demanding equirements in micro/nanoscale structures for photonics, microfluidics, biotechnology, and flexible electronics. Soft lithographic methods use elastomeric stamps, molds and conformable photomasks as patterning elements to provide capabilities that are unavailable with conventional techniques: patterning at molecular scale resolution (~1 nm); ability to form three-dimensional (3D) structure directly, in a single step; experimental simplicity and applicability to large areas. This dissertation explores new materials for the soft molds in order to enhance the resolution and application of soft lithographic methods. A commercially available perfluoropolyethylene (a-PFPE) and a synthesized material based on poly[(3-mercaptopropyl) methylsiloxane] (PMMS) are used in a variety of soft lithographic techniques for high fidelity and high resolution patterning. As an application example, I describe a class of quasi-3D plasmonic crystals for biosensing as well as surface-enhanced Raman scattering, with the connection to theoretical results obtained from rigorous electrodynamics simulations.
Graduation Semester
2010-5
Permalink
http://hdl.handle.net/2142/15547
Copyright and License Information
Copyright 2010 Tu Thanh Truong

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