Enhanced gold SERS signals on HSR surface extrutions generated on carboxyl-rich polystyrene beads

Author

Hsieh, Hsin-Yi ; Wang, Pen-Cheng ; Xiao, Jian-Long ; Lee, Chau-Hwang ; Tseng, Fan-Gang

Author_Institution

Inst. of NanoEngineering & Microsyst. (NEMS), Nat. Tsing Hua Univ., Hsinchu, Taiwan

fYear

2011

fDate

23-27 Jan. 2011

Firstpage

245

Lastpage

248

Abstract

This paper reports the employment of carboxyl groups on polystyrene beads surface to generate high aspect ratio (HSR) nano-extrutions by plasma etching for enhancing SERS signal. We investigate the detail mechanism of the surface corrugation formation on PSBs and propose a novel method to produce HSR surface nano-extrutions on carboxyl-rich PSBs surface. By understanding the mechanism of the surface corrugation formation, we can control the HSR. Therefore, a 4-fold Raman signal enhancement was achieved when compared to the result by previous method, using oxygen plasma to generate corrugation surface on PSBs without carboxyl groups.

Keywords

extrusion; gold; nanofabrication; nanostructured materials; polymers; sputter etching; surface enhanced Raman scattering; Au; HSR surface extrusion; PSB; Raman signal enhancement; carboxyl-rich polystyrene beads; enhanced gold SERS signal; high aspect ratio nanoextrusion; plasma etching; surface enhanced Raman scattering; Corrugated surfaces; Etching; Plasmas; Surface morphology; Surface roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2011 IEEE 24th International Conference on

Conference_Location

Cancun

ISSN

1084-6999

Print_ISBN

978-1-4244-9632-7

Type

conf

DOI

10.1109/MEMSYS.2011.5734407

Filename

5734407