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Rithvik R. Gutha

Researcher at University of Alabama in Huntsville

Publications -  45
Citations -  530

Rithvik R. Gutha is an academic researcher from University of Alabama in Huntsville. The author has contributed to research in topics: Plasmon & Quantum dot. The author has an hindex of 11, co-authored 37 publications receiving 342 citations. Previous affiliations of Rithvik R. Gutha include University of Exeter.

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Review of biosensing with whispering-gallery mode lasers

TL;DR: The most recent advances in biosensing with whisperinggallery modes (WGMs) are described in this paper, where the basic concepts of WGM resonators, the integration of gain media into various active WGM sensors and devices, and the cutting-edge advances in photonic devices for micro-and nanoprobing of biological samples that can be integrated with WGM lasers.
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Biological sensing using hybridization phase of plasmonic resonances with photonic lattice modes in arrays of gold nanoantennas.

TL;DR: The results show that hybridization phase can occur with slight change in the refractive index (RI), leading to sudden reduction of the linewidth of the main spectral feature of the arrays by about one order of magnitude while it is shifted nearly 140 nm.
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Undamped ultrafast pulsation of plasmonic fields via coherent exciton-plasmon coupling

TL;DR: It is shown that under certain conditions the plasmonic field of a hybrid system consisting of a metallic nanoparticle and a semiconductor quantum dot can be converted into ultrashort stationary pulses with temporal widths as short as 300 ps, indicating total suppression of quantum decoherence of the quantum dot.
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Turning on plasmonic lattice modes in metallic nanoantenna arrays via silicon thin films.

TL;DR: Control of optical coupling of plasmon resonances in metallic nanoantenna arrays using ultrathin layers of silicon is studied, demonstrating a controlled transformation from the localized surface plas mon resonances of individual nanoantennas to their optimized collective lattice modes.
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Using Silver Nanoparticles-Embedded Silica Metafilms as Substrates to Enhance the Performance of Perovskite Photodetectors.

TL;DR: Considering that the synthesis of the Ag NPs-silica metafilms can be readily scaled up to coat both rigid and flexible substrates, this result provides a low-cost metaplatform for a variety of high-performance optoelectronic device applications.