Search Results - "Audhkhasi, Romil"

Generalized multi-channel scheme for secure image encryption by Audhkhasi, Romil, Povinelli, Michelle L.

“…The ability of metamaterials to manipulate optical waves in both the spatial and spectral domains has provided new opportunities for image encoding. Combined…”
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Software-defined meta-optics by Audhkhasi, Romil, Fröch, Johannes E., Zhan, Alan, Colburn, Shane, Majumdar, Arka

“…Rapid advancements in autonomous systems and the Internet of Things have necessitated the development of compact and low-power image sensors to bridge the gap…”
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Full Spectral Image Encryption in the Infrared using an Electrically Reconfigurable Metasurface and a Matched Detector by Audhkhasi, Romil, Povinelli, Michelle L.

“…The ability of metasurfaces to manipulate optical waves in the spatial and spectral domain provides new avenues for secure data storage. In this work, an…”
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Gold-black phosphorus nanostructured absorbers for efficient light trapping in the mid-infrared by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose a gold nanostructured design for absorption enhancement in thin black phosphorus films in the 3–5 µm wavelength range. By suitably tuning the design…”
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Spectral emissivity design using aluminum-based hybrid gratings by Audhkhasi, Romil, Povinelli, Michelle L

“…We propose a strategy to design infrared emitters with predefined spectral response using aluminum gratings as building blocks. We begin by identifying 3…”
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Spectral emissivity modeling in multi-resonant systems using coupled-mode theory by Audhkhasi, Romil, Zhao, Bo, Fan, Shanhui, Yu, Zongfu, Povinelli, Michelle L

“…The ability to design multi-resonant thermal emitters is essential to the advancement of a wide variety of applications, including thermal management and…”
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Dynamically switchable self-focused thermal emission by Audhkhasi, Romil, Qu, Yurui, Zhou, Ming, Yu, Zongfu, Povinelli, Michelle L

“…The ability to manipulate thermal emission is paramount to the advancement of a wide variety of fields such as thermal management, sensing and…”
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Non-Volatile Reconfigurable Transmissive Notch Filter Using Wide Bandgap Phase Change Material Antimony Sulfide by Tara, Virat, Chen, Rui, Froch, Johannes E., Fang, Zhuoran, Fang, Jie, Audhkhasi, Romil, Choi, Minho, Majumdar, Arka

“…Reconfigurable free-space metasurfaces with subwavelength-scale tunable nano-scatterers can manipulate light for many applications ranging from bio-medical…”
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Experimental Implementation of Metasurfaces for Secure Multi‐Channel Image Encryption in the Infrared by Audhkhasi, Romil, Lien, Max R., Povinelli, Michelle L.

“…The ability to tailor light–matter interactions using artificially engineered materials has opened up new avenues for secure data storage and communication…”
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Using tunable inter-resonator coupling to reshape the mid-infrared absorption spectrum of graphene-based metamaterials by Sakib, Mashnoon A., Audhkhasi, Romil, Povinelli, Michelle L.

“…We explore the use of tunable inter-resonator coupling to reshape the spectral absorptivity of a graphene-based metamaterial. The metamaterial comprises of a…”
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Spectral emissivity modelling in multi-resonator systems by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose a semi-analytical spectral prediction tool for coupled, multi-resonator systems. We demonstrate the accuracy of our method by predicting and…”
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Multi-channel approach for secure optical image encryption by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose a generalized encryption scheme suited for transmission of image data on multiple wavelength channels. Our key space size grows double-exponentially…”
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Microstructures with designable temperature-dependent thermal emission by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose gold - vanadium dioxide microstructures to achieve structurally tunable difference in thermal radiated power between low and high temperature…”
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Effect of Configuration Statistics on the Spectral Properties of Random Arrays of Particles by Audhkhasi, Romil, Zhelyeznyakov, Maksym, Brunton, Steven, Majumdar, Arka

“…We investigate correlations between the spectral responses of one- and two-dimensional random arrays of particles and their configuration statistics. We…”
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Disordered Metasurface Doublets for Asymmetric Visibility and Synergistic Imaging in the Mid-Infrared by Audhkhasi, Romil, Zhelyeznyakov, Maksym, Wirth-Singh, Anna, Majumdar, Arka

“…We propose an all-silicon metasurface doublet that performs imaging in the mid-infrared only along a predefined light propagation direction. As a second…”
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Statistics dependent spectral properties of random arrays of particles by Audhkhasi, Romil, Zhelyeznyakov, Maksym, Brunton, Steven, Majumdar, Arka

“…The ability to tailor the spectral response of photonic devices is paramount to the advancement of a broad range of applications. The vast design space offered…”
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Spectral emissivity prediction in multi-resonant systems by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose a semi-analytical spectral prediction tool for multi-resonant systems based on temporal coupled-mode theory. We demonstrate the accuracy of our…”
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Designable, temperature-dependent thermal emission using vanadium-dioxide microstructures by Audhkhasi, Romil, Povinelli, Michelle L.

“…We propose gold - vanadium dioxide microstructured emitters to achieve structurally tunable difference in thermal radiated power between low and high…”
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Graphene-based metamaterial for in-situ spectral absorption tailoring in the mid-infrared by Audhkhasi, Romil, Sakib, Mashnoon A., Povinelli, Michelle L.

“…We propose a periodic graphene-based metamaterial consisting of two coupled resonators per unit cell. By modulating the Fermi energy of graphene, we are able…”
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Aluminum-based hybrid gratings for infrared spectral emissivity design by Audhkhasi, Romil, Povinelli, Michelle L.

“…We use aluminum gratings to design emitters with predefined spectral response in the infrared. We create a reference library to investigate the relationship…”
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