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V. V. R. Sai

Researcher at Indian Institute of Technology Madras

Publications -  42
Citations -  1269

V. V. R. Sai is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Optical fiber & Fiber optic sensor. The author has an hindex of 16, co-authored 29 publications receiving 916 citations. Previous affiliations of V. V. R. Sai include Indian Institute of Technology Bombay.

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Controlled In Situ Seed-Mediated Growth of Gold and Silver Nanoparticles on an Optical Fiber Platform for Plasmonic Sensing Applications

TL;DR: In this article, the authors exploit the dual functionality of the U-bent fiber optic sensor (FOS) probes, where the probe acts as, firstly, the substrate for nanoparticles' growth and, secondly, an invaluable tool to monitor as well as control the gold and silver seed binding to the surface amine groups and subsequently their growth in real time by means of the evanescent wave absorbance (EWA) spectral response.
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Emerging trends in point-of-care sensors for illicit drugs analysis.

TL;DR: Point-of-care drug testing devices have become the need of the hour for many sections such as the law enforcement agencies, the workplaces, etc. as mentioned in this paper, which can result in serious safety breaches at critical workplaces.
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Attomolar analyte sensing techniques (AttoSens): a review on a decade of progress on chemical and biosensing nanoplatforms.

TL;DR: In this paper, the authors review the approaches listed for various sensor probe design, and their sensing strategies that paved the way for the detection of attomolar (aM: 10−18 M) concentration of analytes.
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PMMA Surface Functionalization Using Atmospheric Pressure Plasma for Development of Plasmonically Active Polymer Optical Fiber Probes

TL;DR: In this article, the authors demonstrate the development of plasmonically active PMMA optical fiber probes by the attachment of gold nanoparticles to the probe surface functionalized by means of flowing post-discharges from dielectric barrier discharge (DBD) plasmas for the first time.
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Step-Etched U-Bent Silica Fiber Optic Probes - Design and Optimum Geometry for Refractive Index Sensing

TL;DR: In this paper , a ray-optics based model for the multimode U-bent silica fiber optic refractive index (RI) sensor probes is presented, followed by a detailed experimental investigation to identify the optimum fiber core (d) and bend diameter (D), and the optimal bend ratio (D/d).