Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2315
Title: Thermally Stable Plasmonic Nanocermets Grown on Microengineered Surfaces as Versatile Surface Enhanced Raman Spectroscopy Sensors for Multianalyte Detection
Authors: Gupta, Nitant
Gupta, Disha
Aggarwal, Shantanu
Siddhanta, Soumik
Narayana, Chandrabhas
Barshilia, Harish C.
Keywords: Nanoscience & Nanotechnology
Materials Science
Plasmonic Nanocermets
Surface Enhanced Raman Spectroscopy
Ag Nanoparticles
High Thermal Stability
Biomolecule Detection
High-Temperature
Silver Nanoparticles
Ag Nanoparticles
Scattering
Resonances
Molecules
Sers
Size
Morphology
Layer
Issue Date: 2014
Publisher: American Chemical Society
Citation: Gupta, N; Gupta, D; Aggarwal, S; Siddhanta, S; Narayana, C; Barshilia, HC, Thermally Stable Plasmonic Nanocermets Grown on Microengineered Surfaces as Versatile Surface Enhanced Raman Spectroscopy Sensors for Multianalyte Detection. ACS Applied Materials & Interfaces 2014, 6 (24) 22733-22742, http://dx.doi.org/10.1021/am506879h
ACS Applied Materials & Interfaces
6
24
Abstract: Noble metal nanoparticle-based plasmonic sensors, fabricated by top-down and colloidal routes, are widely used for high sensitivity detection of diverse analyte molecules using surface enhanced Raman spectroscopy (SERS). However, most of these sensors do not show stability under harsh environments, which limits their use as versatile SERS substrates. In this work, we report the first use of plasmonic nanocermets, grown on microengineered Si surfaces, as potential candidates for a highly robust SERS sensor. The robustness of the sensor is attributed to the anchoring of the nanoparticles in the nanocermet, which is an important factor for exploiting its reusability. The fairly uniform distribution of nanoparticles in the sensor led to high enhancement factors (10(6)-10(7)) and enabled the detection of low concentrations of a wide range of analytes, including differently charged biomolecules, which is extremely difficult for other SERS sensors. With more precise control over the particle geometry and distribution, plasmonic nanocermets may play an important role in ultrasensitive SERS measurements in adverse conditions such as high temperature.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2315
ISSN: 1944-8244
Appears in Collections:Research Articles (Chandrabhas N.)

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