Dr. Romil Audhkhasi Profile

Dr. Romil Audhkhasi

at Univ of Washington

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 4 October 2024 Presentation

Unidirectional and synergistic imaging in the mid-infrared using metasurfaces with engineered disorder

Romil Audhkhasi, Anna Wirth-Singh, Maksym Zhelyeznyakov, Arka Majumdar

Proceedings Volume PC13149, PC1314902 (2024) https://doi.org/10.1117/12.3026853

KEYWORDS: Diseases and disorders, Infrared radiation, Infrared imaging, Design, Optical metamaterials, Plane waves, Mathematical modeling, Imaging systems, Mid infrared, Metamaterials

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Proceedings Article | 2 October 2024 Presentation

Utilizing statistics dependent spectral properties of random metasurfaces for multiwavelength cryptography

Romil Audhkhasi, Maksym Zhelyeznyakov, Steven Brunton, Arka Majumdar

Proceedings Volume PC13130, PC1313004 (2024) https://doi.org/10.1117/12.3026856

KEYWORDS: Ocean optics, Materials properties, Cryptography, Photonic devices, Design, Optical properties, Image encryption, Diseases and disorders, Visible radiation, Statistical analysis

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Proceedings Article | 1 October 2024 Presentation

Achieving full-spectral image encryption in the infrared using an electrically tunable metasurface and a matched detector

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 13136, 131360B (2024) https://doi.org/10.1117/12.3026852

KEYWORDS: Image encryption, Infrared radiation, Infrared imaging, Infrared sensors, Infrared detectors, Sensors, Optical image encryption, Computer security, Spectral response, Photonic devices

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Proceedings Article | 4 October 2023 Presentation

Electrically-controlled switching of a narrowband absorption resonance

Bo Shrewsbury, Romil Audhkhasi, Michelle Povinelli

Proceedings Volume PC12647, PC126471M (2023) https://doi.org/10.1117/12.2675497

KEYWORDS: Absorption, Switching, Resonators, Refractive index, Plane waves, Modulation, Gallium arsenide, Semiconductors, Infrared radiation, Imperfections

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Proceedings Article | 17 March 2023 Presentation

Graphene-based metamaterial for on-demand spectral absorption shaping in the mid-infrared

Romil Audhkhasi, Mashnoon Sakib, Michelle Povinelli

Proceedings Volume PC12423, (2023) https://doi.org/10.1117/12.2647423

KEYWORDS: Metamaterials, Resonators, Absorption, Mid-IR, Modulation, Infrared radiation, Graphene, Infrared imaging

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Proceedings Article | 17 March 2023 Presentation

Multi-channel encryption scheme for secure optical communication

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 12429, 124291H (2023) https://doi.org/10.1117/12.2647934

KEYWORDS: Optical communications, Image encryption, Image transmission, Receivers, Multiplexing, Imaging systems, Hyperspectral systems, Hyperspectral imaging, Computer security

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Proceedings Article | 17 March 2023 Presentation

Spectral emissivity prediction in multi-resonant metamaterials using temporal coupled-mode theory

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume PC12431, PC124310S (2023) https://doi.org/10.1117/12.2647295

KEYWORDS: Metamaterials, Numerical analysis, Thermal sensing, Resonators, Computing systems, Complex systems

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Proceedings Article | 17 March 2023 Presentation

Reconfigurable thermal emissivity using infrared metamaterials

Michelle Povinelli, Rehan Kapadia, Alok Ghanekar, Hyun Uk Chae, Romil Audhkhasi, Bo Shrewsbury, Ragib Ahsan

Proceedings Volume PC12431, PC124310E (2023) https://doi.org/10.1117/12.2661319

KEYWORDS: Metamaterials, Infrared radiation, Thermography, Switching, Resonators, Optical lithography, Infrared materials, Gallium arsenide

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Proceedings Article | 13 October 2022 Presentation

Graphene-based metamaterial for on-demand spectral shaping in the mid-infrared (Conference Presentation)

Mashnoon Sakib, Romil Audhkhasi, Michelle Povinelli

Proceedings Volume PC12196, PC1219606 (2022) https://doi.org/10.1117/12.2632201

KEYWORDS: Metamaterials, Resonators, Mid-IR, Modulation, Infrared radiation, Graphene, Absorption, Infrared imaging

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Proceedings Article | 3 October 2022 Presentation

Secure multi-channel scheme for optical image encryption (Conference Presentation)

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume PC12225, PC1222507 (2022) https://doi.org/10.1117/12.2631898

KEYWORDS: Optical image encryption, Image encryption, Image transmission, Receivers, Multiplexing, Imaging systems, Hyperspectral systems, Hyperspectral imaging, Computer security

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Proceedings Article | 3 October 2022 Presentation

Spectral emissivity prediction in multi-resonator metamaterials

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 12215, 122150F (2022) https://doi.org/10.1117/12.2631947

KEYWORDS: Metamaterials, Numerical analysis, Thermal sensing, Resonators, Computing systems, Complex systems

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Proceedings Article | 3 October 2022 Presentation

Reconfigurable thermal absorbers and emitters

Michelle Povinelli, Romil Audhkhasi, Alok Ghanekar, Mashnoon Sakib, Ahmed Morsy, Bo Shrewsbury

Proceedings Volume PC12196, PC1219607 (2022) https://doi.org/10.1117/12.2633759

KEYWORDS: Infrared radiation, Absorption, Resonators

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Proceedings Article | 5 March 2022 Presentation

Enhanced thermal emission tunability using vanadium-dioxide microstructures

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume PC12010, PC1201009 (2022) https://doi.org/10.1117/12.2607899

KEYWORDS: Waveguides, Vanadium, Transition metals, Structural design, Solid state physics, Optical properties, Metals, Dielectrics

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Proceedings Article | 1 August 2021 Presentation

Modulation of emissivity in coupled-resonator systems

Michelle Povinelli, Ahmed Morsy, Romil Audhkhasi

Proceedings Volume 11796, 1179623 (2021) https://doi.org/10.1117/12.2595393

KEYWORDS: Resonators, Metamaterials, Control systems

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Proceedings Article | 1 August 2021 Presentation

Vanadium-dioxide microstructures with enhanced thermal emission tunability

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 11796, 1179620 (2021) https://doi.org/10.1117/12.2593422

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Proceedings Article | 5 March 2021 Presentation

Spectral emission tailoring using aluminum-based hybrid gratings

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 11694, 116940U (2021) https://doi.org/10.1117/12.2576933

KEYWORDS: Aluminum, Optical design, Algorithm development, Surface plasmons, Structural design, Skin, Polymers, Infrared radiation, Finite-difference time-domain method

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Proceedings Article | 5 March 2021 Poster + Presentation

Enhanced light trapping in the mid-infrared using gold-black phosphorus nanostructured absorbers

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 11688, 116880Y (2021) https://doi.org/10.1117/12.2576932

KEYWORDS: Phosphorus, Nanostructuring, Gold, Mid-IR, Dielectrics, Absorption, Thin films, Refractive index, Reflectors

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Proceedings Article | 16 October 2020 Poster

Achieving efficient light trapping in the infrared using gold-black phosphorus nanostructured absorbers

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 11503, 115030W (2020) https://doi.org/10.1117/12.2568288

KEYWORDS: Phosphorus, Gold, Nanostructuring, Infrared radiation, Absorption, Dielectrics, Metals, Reflectors, Refractive index, Optoelectronics

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Proceedings Article | 19 August 2020 Poster

Aluminum-based hybrid gratings for spectral synthesis in the infrared

Romil Audhkhasi, Michelle Povinelli

Proceedings Volume 11462, 114622G (2020) https://doi.org/10.1117/12.2568344

KEYWORDS: Infrared radiation, Optical design, Aluminum, Surface plasmons, Algorithm development, Detection and tracking algorithms, Metals, Finite-difference time-domain method, Structural design, Skin

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