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Priyamvada Venugopalan on Muck Rack

Priyamvada Venugopalan

As seen in: MDPI
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Articles

Highly Sensitive Plasmonic Sensor with Au Bow Tie Nanoantennas on SiO2 Nanopillar Arrays

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By Priyamvada Venugopalan, Sunil Kumar
| MDPI
Abstract : We report on plasmonic sensors based on arrays of metallic bow tie nanoantennas with high sensitivity and an enhanced figure of merit. In the present sensing device, each gold nanoantenna is positioned on the upper surface of a SiO2 nanopillar that is placed on a quartz substrate. The presence of the nanopillar significantly reduces the coupling of the enhanced electromagnetic field generated at the plasmon resonance to the substrate.
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Magnetic nanoparticle-enhanced surface plasmon resonance biosensor for extracellular vesicle analysis

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By Agnes Reiner, Nicolas Guillermo Ferrer, Priyamvada Venugopalan, Ruenn Chai Lai
| Royal Society of Chemistry Verified
The sensitive analysis of small lipid extracellular vesicles (EVs) by using a grating-coupled surface plasmon resonance (GC-SPR) biosensor is reported. In order to enable the analysis of trace amounts of EVs present in complex liquid samples, the target analyte is pre-concentrated at the sensor surface by using magnetic nanoparticles and its affinity binding is probed by wavelength interrogation of SPR.
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