FABRICATION, CHARACTERIZATION AND SIMULATION OF GRATING-BASED STRUCTURES FOR SURFACE-ENHANCED RAMAN SPECTROSCOPY (SERS) SUBSTRATES

Nina  Siti Aminah; Mitra  Djamal; Herman  Bahar; Sakoolkan  Boonruang; Mati  Horprathum

Authors

Nina Siti Aminah Theoretical High Energy Physics and Instrumentation Group, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia
Mitra Djamal Theoretical High Energy Physics and Instrumentation Group, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia.
Herman Bahar Theoretical High Energy Physics and Instrumentation Group, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia.
Sakoolkan Boonruang
Mati Horprathum Optical Thin-Film Laboratory, National Electronics and Computer Technology, Thailand.

Keywords:

Surface-enhanced Raman spectroscopy, grating-based structure, surface plasmons resonance, rigorous coupled wave analysis

Abstract

Surface Plasmon Resonance (SPR) is a resonance phenomenon between electron on the metal surface and the incident light which generates quantized-plasmons oscillation. There are several approaches to excite SPR wave, i.e. by using a prism coupler, grating-based structure, waveguide coupling and nanoparticles. Among those methods, diffraction grating offers more simplicity in fabrication and cost-effective. This paper presents the experimental results on the fabrication of grating-based structure and characterization in those fabricated grating. The fabricated structure is also analyzed using Rigorous Coupled-Wave Analysis (RCWA) method to maximize the SERS electromagnetic field as SERS substrates. SERS substrates are a method to enhance Raman signal.

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