Search Results - "Dwivedi, Ranjeet"

Broadband forward-scattering of light by plasmonic balls: Role of multipolar interferences by Dwivedi, Ranjeet, Lafitte, Maeva, Buisson, Lionel, Mondain-Monval, Olivier, Ponsinet, Virginie, Baron, Alexandre

“…Efficient and broadband forward-scattering is a property of prime importance for meta-atoms if they are to be used in self-assembled metasurfaces. Strong…”
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Propagation characteristics of single and multilayer Ga:ZnO in the epsilon near zero region by Dwivedi, Ranjeet, Toudert, Johann

“…We numerically investigated the propagation characteristics of Ga:ZnO (GZO) thin films embedded in a ZnWO background in the epsilon near zero (ENZ) region. We…”
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A compact and ultra high sensitive RI sensor using modal interference in an integrated optic waveguide with metal under-cladding by Dwivedi, Ranjeet, Kumar, Arun

“…•A compact and ultra high sensitive Integrated Optic refractive index sensor is proposed.•The sensitivity of the proposed sensor is found to vary in between…”
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Refractive index sensing using silicon-on-insulator waveguide based modal interferometer by Dwivedi, Ranjeet, Kumar, Arun

“…We propose a refractive index sensor based on modal interference between the first two TE modes in a silicon-on-insulator dual-mode waveguide. It is shown that…”
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Ultra high sensitive integrated optical waveguide refractive index sensor based on multimode interference by Kumar, Manoj, Kumar, Arun, Dwivedi, Ranjeet

“…We propose an ultra high sensitive integrated optical waveguide refractive index sensor based on multimode interference which can be integrated with other…”
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Ultra High Sensitive Refractive Index Sensor Using a Metal Under-Clad Ridge Waveguide Modal Interferometer Near the Dispersion Turning Point by Dwivedi, Ranjeet, Kumar, Arun, Tripathi, Saurabh Mani

“…It is shown that by optimizing the core dimensions of a metal underclad ridge waveguide (MUCRW), a dispersion turning point (DTP) can be obtained in the dual…”
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Refractive Index Sensing Using Silicon-on-Insulator Waveguide Based Directional Coupler by Dwivedi, Ranjeet, Kumar, Arun

“…We propose a refractive index (RI) sensor based on a vertical directional coupling between two silicon-oninsulator (SOI) waveguides. It is shown that by…”
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A Long Period Waveguide Grating Sensor for Accurate Simultaneous Detection of Dual Analytes by Dandapat, Krishnendu, Saha, Nabarun, Dwivedi, Ranjeet, Tripathi, Saurabh Mani, Kumar, Arun

“…To the best of our knowledge, we are the first to report the existence of two dispersion turning points (DTP) in an optimized planar waveguide long-period…”
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Structural, optical, elemental and photometric properties of Sm3+ activated Ca3Ga4O9 oxide phosphors for WLEDs by Govindan, V., Raja, Arumugam, Mohan Das, Gour, Dwivedi, Ranjeet, Kindrat, I., Daniel, D. Joseph

“…Solid-state lighting systems rely on the exceptional characteristics of phosphor-converted LEDs, including long lifetime, low energy consumption, and high…”
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Colloidal Self-Assembly of Silver Nanoparticle Clusters for Optical Metasurfaces by Lafitte, Maeva, Dwivedi, Ranjeet, Elancheliyan, Rajam, Lagugné-Labarthet, François, Buisson, Lionel, Ly, Isabelle, Barois, Philippe, Baron, Alexandre, Mondain-Monval, Olivier, Ponsinet, Virginie

“…Optical metasurfaces are two-dimensional assemblies of nanoscale optical resonators and could constitute the next generation of ultrathin optical components…”
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An Ultra-Thin Near-Perfect Absorber via Block Copolymer Engineered Metasurfaces by Cummins, Cian, Flamant, Quentin, Dwivedi, Ranjeet, Alvarez-Fernandez, Alberto, Demazy, Nils, Bentaleb, Ahmed, Pound-Lana, Gwenaelle, Zelsmann, Marc, Barois, Philippe, Hadziioannou, Georges, Baron, Alexandre, Fleury, Guillaume, Ponsinet, Virginie

“…[Display omitted] Producing ultrathin light absorber layers is attractive towards the integration of lightweight planar components in electronic, photonic, and…”
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An Ultra-low-loss Compact Phase-Change Material-based Hybrid-mode Interferometer for Photonic Memories by Dwivedi, Ranjeet, Pavanello, Fabio, Orobtchouk, Regis

“…We propose a novel hybrid mode interferometer (HMI) leveraging the interference of hybridized TE-TM modes in a silicon-on-insulator (SOI) waveguide integrated…”
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Effective-medium properties of dense plasmonic balls by Dwivedi, Ranjeet, Aradian, Ashod, Ponsinet, Virginie, Vynck, Kevin, Baron, Alexandre

“…The electromagnetic behavior of dense plasmonic balls under plane wave illumination is investigated. High-precision T-matrix numerical calculations are used to…”
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Effective medium description of dense clusters of plasmonic nanoparticles with spatial dispersion by Dwivedi, Ranjeet, Aradian, Ashod, Ponsinet, Virginie, Vynck, Kevin, Baron, Alexandre

“…We study the electromagnetic behaviour of dense, spherical clusters made of hundreds of plasmonic nanoparticules under illumination by a plane wave. Using…”
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Broadband forward scattering of light by plasmonic balls: role of multipolar interferences by Dwivedi, Ranjeet, Lafitte, Maeva, Buisson, Lionel, Mondain-Monval, Olivier, Ponsinet, Virginie, Baron, Alexandre

“…Efficient and broadband forward-scattering is a property of prime importance for meta-atoms if they are to be used in self-assembled metasurfaces. Strong…”
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Ultra-high Sensitive Surface Plasmon Resonance Based Sensor with Dual Resonance by Kumar, Indrajeet, Dwivedi, Ranjeet, Tripathi, Saurabh Mani

“…We show that for the optimized angle of incidence, the SPR based optical sensors exhibit dual resonance in the near-infrared region around which the sensor…”
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