Plastic Substrates for Surface-Enhanced Raman Scattering

详细信息    查看全文

• 作者：Matthias Geissler ; Kebin Li ; Bo Cui ; Liviu Clime ; Teodor Veres
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：October 8, 2009
• 年：2009
• 卷：113
• 期：40
• 页码：17296-17300
• 全文大小：262K
• 年卷期：v.113,no.40(October 8, 2009)
• ISSN：1932-7455

文摘

This paper investigates the fabrication of substrates for surface-enhanced Raman scattering (SERS) using hard thermoplastic polymers in conjunction with sputtering and electroless deposition of a thin Au or Ag film. In contrast to silicon or glass, plastic materials promote the replication of nanoscale structures over large areas in a rapid and cost-effective manner using molding or embossing techniques. However, synthetic polymers are Raman-active compounds, providing a source of interference with signals arising from reporter molecules that may be used for SERS detection. Moreover, most plastics melt and undergo degradation when exposed to a focused laser beam, resulting in irreversible loss of the SERS-active metal features in the detection area. We address these issues and show that proper decoration of the plastic surface with a metal overlayer can suppress Raman background signal of the polymer substrate, as well as any adverse effect arising from laser illumination.