Rapid Preparation of Large-Area Densely Packed Plasmonic Hot-Spots for Reliable Sers Sensing

Journal Article · Sat Sep 15 04:00:00 EDT 2018 · Optics and Spectroscopy

DOI:https://doi.org/10.1134/S0030400X18090114· OSTI ID:22786259

Chen, Jian; Huang, Zhenping; Liu, Guiqiang ^[1]

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1. Jiangxi Normal University, Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics and Communication Electronics (China)

A facile, efficient and time-saving strategy is proposed to obtain large-area and reliable surface-enhanced Raman scattering (SERS) substrates via artificial heat-treatment of Au nanoparticles or ultrathin Au films sputtered on the silica substrates. Excellent Raman enhancements with the detection limitation down to 10{sup –9} mol/L are obtained due to the highly-dense plasmonic hot-spots and strong plasmons near-field coupling. Decreased intensity of Raman peaks with the increased sputtering time of Au nanoparticles or ultrathin films mainly originates from the excited and hybridized coupling of multiple surface plasmons. The simple fabrication strategy and superior performance make these substrates promising candidates for the development of inexpensive and reliable SERS substrates.

• OSTI ID: 22786259
• Journal Information: Optics and Spectroscopy, Journal Name: Optics and Spectroscopy Journal Issue: 3 Vol. 125; ISSN 0030-400X; ISSN OPSUA3
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DETECTION
HEAT TREATMENTS
NANOPARTICLES
PLASMONS
RAMAN EFFECT
SILICA
SPUTTERING
SUBSTRATES
SURFACES
THIN FILMS