Search Results - "Chowdhury, Dibakar Roy"

Accessing dual toroidal modes in terahertz plasmonic metasurfaces through polarization-sensitive resonance hybridization by Mallick, Soumyajyoti, Rane, Shreeya, Acharyya, Nityananda, Roy Chowdhury, Dibakar

“…Abstract Plasmonic metasurfaces have been quite a fascinating framework to invoke transformation of incident electromagnetic waves for a while now. Oftentimes,…”
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Thin film sensing near exceptional point utilizing terahertz plasmonic metasurfaces by K N, Indu Krishna, Roy Chowdhury, Dibakar

“…Abstract Non-Hermitian quantum systems along with engineered metasurfaces enable a versatile podium for sensor designs from industrial to medical sectors. The…”
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Deep‐Subwavelength Coupling‐Induced Fano Resonances in Symmetric Terahertz Metamaterials by Karmakar, Subhajit, Banerjee, Sabyasachi, Kumar, Deepak, Kamble, Girish, Varshney, Ravendra K., Roy Chowdhury, Dibakar

“…Fano resonances in metamaterials attract intense attention due to their sharp asymmetric spectral feature and low radiative loss channel. Typically, Fano…”
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Topological edge states in an all-dielectric terahertz photonic crystal by Monika Devi, Koijam, Jana, Sambhu, Roy Chowdhury, Dibakar

“…We present an analysis of the robustness of topological edge states in an all-dielectric photonic crystal slab in the terahertz (THz) frequency domain. We…”
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Polarization-independent tunable terahertz slow light with electromagnetically induced transparency metasurface by Devi, Koijam Monika, Jana, Arun, Punjal, Ajinkya, Acharyya, Nityananda, Prabhu, Shriganesh S, Roy Chowdhury, Dibakar

“…Abstract Tunable slow light systems have gained much interests recently due to their efficient control of strong light–matter interactions as well as their…”
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Terahertz sensing of reduced graphene oxide nanosheets using sub-wavelength dipole cavities by Sajeev, Vaishnavi, Rane, Shreeya, Ghosh, Debal, Acharyya, Nityananda, Roy Choudhury, Palash, Mukherjee, Arnab, Roy Chowdhury, Dibakar

“…Because of extraordinary optoelectronic properties, two-dimensional (2D) materials are the subject of intense study in recent times. Hence, we investigate…”
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Graphene and metal hybridized terahertz metasurfaces toward tunable plasmon-induced transparency effects by Krishna K. N., Indu, Devi, K. Monika, Roy Chowdhury, Dibakar

“…Tunable metasurfaces have attracted much attention recently, owing to their capability of actively controlling electromagnetic waves. Here, we propose tunable…”
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Topological edge state assisted dynamically tunable microwave propagations in photonic crystals by Jana, Sambhu, Devi, Koijam Monika, Kulkarni, Gopal, Mallick, Soumyajyoti, Roy Chowdhury, Dibakar

“…Abstract Topological photonics has emerged as a cutting-edge and intriguing field that permits electromagnetic waves to transmit with minimal losses even when…”
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Ultrafast manipulation of near field coupling between bright and dark modes in terahertz metamaterial by Roy Chowdhury, Dibakar, Singh, Ranjan, Taylor, Antoinette J., Chen, Hou-Tong, Azad, Abul K.

“…We demonstrate ultrafast optical control of near field coupling between bright and dark mode resonances in metamaterials. The meta-molecule design consists of…”
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Magnetotransport‐Induced Non‐Contact Terahertz Detection of Weak Magnetic Fields in Optically Thin Frequency‐Agile Superlattice Metasurfaces by Karmakar, Subhajit, Acharyya, Nityananda, Rane, Shreeya, Varshney, Ravendra K., Roy Chowdhury, Dibakar

“…Magnetotransport, the magnetic field induced electron transport phenomenon through metals and semiconductors, has proven to be a useful technique to tailor the…”
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Magnetically Reconfigurable Toroidal Metasurfaces by Acharyya, Nityananda, Mallick, Soumyajyoti, Rane, Shreeya, Upadhyay Kahaly, Mousumi, Roy Chowdhury, Dibakar

“…Harnessing electron spin within limited dimensions under applied magnetic fields can lead to spin‐assisted tunable light‐matter interactions, which form a…”
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Bandwidth Enhancement of Planar Terahertz Metasurfaces via Overlapping of Dipolar Modes by Kumar, Deepak, Jain, Ravikumar, Shahjahan, Banerjee, Sabyasachi, Prabhu, Shriganesh S., Kumar, Ranjan, Azad, Abul K., Roy Chowdhury, Dibakar

“…We present enhancement of operational bandwidths of planar terahertz metasurfaces by incorporating a complex unit cell that consists of a pair of concentric…”
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New insights into APCVD grown monolayer MoS2 using time-domain terahertz spectroscopy by Sharma, Saloni, Chauhan, Pooja, Rane, Shreeya, Raj, Utkarsh, Srivastava, Shubhda, Ansari, Z. A., Roy Chowdhury, Dibakar, Gupta, Bipin Kumar

“…In modern era, wireless communications at ultrafast speed are need of the hour and search for its solution through cutting edge sciences is a new perspective…”
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Dynamically reconfigurable terahertz metamaterial through photo-doped semiconductor by Roy Chowdhury, Dibakar, Singh, Ranjan, O'Hara, John F., Chen, Hou-Tong, Taylor, Antoinette J., Azad, Abul K.

“…We demonstrate reconfigurable terahertz metamaterial (MM) in which constituent resonators can be switched from split-ring resonators (SRRs) to closed-ring…”
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Coulomb interaction mediated tuning of surface plasmon resonances in terahertz hole arrays by Sajeev, Vaishnavi, Jana, Arun, Mallick, Soumyajyoti, Devi, Koijam Monika, Roy Chowdhury, Dibakar

“…Abstract Resonance excitation of surface plasmons in sub-wavelength periodic apertures (popularly known as hole arrays) is typically decided by its lattice…”
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Tailoring terahertz surface plasmon resonances through near-field coupling in multiple holes-based arrays by Sajeev, Vaishnavi, Acharyya, Nityananda, Mallick, Soumyajyoti, Roy Chowdhury, Dibakar

“…The phenomenon of extraordinary transmission (EOT) through perforated metal sheets (hole arrays) has been an interesting field of research since its discovery…”
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Influence of film thickness in THz active metamaterial devices: A comparison between superconductor and metal split-ring resonators by Singh, Ranjan, Roy Chowdhury, Dibakar, Xiong, Jie, Yang, Hao, Azad, Abul K., Taylor, Antoinette J., Jia, Q. X., Chen, Hou-Tong

“…We experimentally demonstrate thickness-dependent resonance tuning in planar terahertz superconducting metamaterials. Inductive-capacitive resonance of arrays…”
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Operation of resonant-tunneling diodes beyond resonant-state-lifetime limit by Feiginov, Michael N., Roy Chowdhury, Dibakar

“…We show, first, that the charge relaxation (response) time of resonant-tunneling diode (RTD) can be significantly shorter or longer than the resonant-state…”
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Broadside-coupling–enabled insulator-to-metal transition in a terahertz metasurface by Mallick, Soumyajyoti, Chowdhury, Dibakar Roy

“…Abstract We theoretically demonstrate stacked-dipole-resonators–based (broadside near-field coupling configuration) multilayer metasurfaces separated by a…”
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Dynamically tunable slow light characteristics in graphene based terahertz metasurfaces by Kumar, Deepak, Devi, Koijam Monika, Kumar, Ranjan, Roy Chowdhury, Dibakar

“…We propose a graphene based metasurface exhibiting dynamic slow light behavior via electromagnetically induced transparency (EIT) effect in the terahertz…”
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