Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/81433
Title: Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications
Authors: Matham, Murukeshan Vadakke
Hasna, Kudilatt
Lakshmi, Kiran
Ezhuthachan Jayaraj, Madambi Kunjukuttan
Kumar, Kumaran Rajeev
Keywords: Mechanical and Aerospace Engineering
Issue Date: 2016
Source: Hasna, K., Lakshmi, K., Ezhuthachan Jayaraj, M. K., Kumar, K. R., & Matham, M. V. (2016). Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications. Journal of Nanophotonics, 10(2), 026020-.
Series/Report no.: Journal of Nanophotonics
Abstract: Surface-enhanced Raman spectroscopy (SERS) has emerged as one of the thrust research areas that could find potential applications in bio and chemical sensing. We developed colloidal SERS active substrate with excellent sensitivity and high reproducibility using silver nanocube (AgNC) synthesized via the solvothermal method. Finite-difference time-domain simulation was carried out in detail to visualize dipole generation in the nanocube during localized surface plasmon resonance and to locate the respective hot spots in AgNC responsible for the huge Raman enhancement. The prediction is verified by the SERS analysis of the synthesized nanocubes using Rhodamine 6G molecule. An excellent sensitivity with a detection limit of 10^−17  M and a very high enhancement factor of 1.2×10^8 confirms the “hot spots” in the nanocube. SERS activity is also carried out for crystal violet and for food adulterant Sudan I molecule. Finally, label-free DNA detection is performed to demonstrate the versatility of SERS as a potential biosensor.
URI: https://hdl.handle.net/10356/81433
http://hdl.handle.net/10220/40805
ISSN: 1934-2608
DOI: 10.1117/1.JNP.10.026020
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Development of high-sensitive, reproducible colloidal surface-enhanced Raman spectroscopy active substrate using silver nanocubes for potential biosensing applications and is made available as an electronic reprint (preprint) with permission of Society of Photo-Optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/1.JNP.10.026020]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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