Search Results - "Padilla, Willie J."

Experimental realization of a terahertz all-dielectric metasurface absorber by Liu, Xinyu, Fan, Kebin, Shadrivov, Ilya V, Padilla, Willie J

“…Metamaterial absorbers consisting of metal, metal-dielectric, or dielectric materials have been realized across much of the electromagnetic spectrum and have…”
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Deep Learning the Electromagnetic Properties of Metamaterials—A Comprehensive Review by Khatib, Omar, Ren, Simiao, Malof, Jordan, Padilla, Willie J.

“…Deep neural networks (DNNs) are empirically derived systems that have transformed traditional research methods, and are driving scientific discovery…”
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Deep learning for accelerated all-dielectric metasurface design by Nadell, Christian C., Huang, Bohao, Malof, Jordan M., Padilla, Willie J.

“…Deep learning has risen to the forefront of many fields in recent years, overcoming challenges previously considered intractable with conventional means…”
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Metamaterial Electromagnetic Wave Absorbers by Watts, Claire M., Liu, Xianliang, Padilla, Willie J.

“…The advent of negative index materials has spawned extensive research into metamaterials over the past decade. Metamaterials are attractive not only for their…”
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Liquid Crystal Metamaterial Absorber Spatial Light Modulator for THz Applications by Savo, Salvatore, Shrekenhamer, David, Padilla, Willie J.

“…A terahertz (THz) spatial light modulator implemented with metamaterial absorbers (MMAs) functionalized with isothiocyanate‐based liquid crystals (LCs) is…”
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Degenerate critical coupling in all-dielectric metasurface absorbers by Ming, Xianshun, Liu, Xinyu, Sun, Liqun, Padilla, Willie J

“…We develop the theory of all-dielectric absorbers based on temporal coupled mode theory (TCMT), with parameters extracted from eigenfrequency simulations. An…”
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Ultra-thin infrared metamaterial detector for multicolor imaging applications by Montoya, John A, Tian, Zhao-Bing, Krishna, Sanjay, Padilla, Willie J

“…The next generation of infrared imaging systems requires control of fundamental electromagnetic processes - absorption, polarization, spectral bandwidth - at…”
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Surface-wave-assisted nonreciprocity in spatio-temporally modulated metasurfaces by Cardin, Andrew E., Silva, Sinhara R., Vardeny, Shai R., Padilla, Willie J., Saxena, Avadh, Taylor, Antoinette J., Kort-Kamp, Wilton J. M., Chen, Hou-Tong, Dalvit, Diego A. R., Azad, Abul K.

“…Emerging photonic functionalities are mostly governed by the fundamental principle of Lorentz reciprocity. Lifting the constraints imposed by this principle…”
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THz Wave Modulators: A Brief Review on Different Modulation Techniques by Rahm, Marco, Li, Jiu-Sheng, Padilla, Willie J.

“…We review different techniques for modulation of the electromagnetic properties of terahertz (THz) waves. We discuss various approaches for electronic,…”
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A metamaterial absorber for the terahertz regime: design, fabrication and characterization by Tao, Hu, Landy, Nathan I, Bingham, Christopher M, Zhang, Xin, Averitt, Richard D, Padilla, Willie J

“…We present a metamaterial that acts as a strongly resonant absorber at terahertz frequencies. Our design consists of a bilayer unit cell which allows for…”
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Infrared all-dielectric Kerker metasurfaces by Fan, Kebin, Shadrivov, Ilya V, Miroshnichenko, Andrey E, Padilla, Willie J

“…The unidirectional scattering of electromagnetic waves in the backward and forward direction, termed Kerkers' first and second conditions, respectively, is a…”
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Group theoretical description of artificial electromagnetic metamaterials by Padilla, Willie J

“…Point group theoretical methods are used to determine the electromagnetic properties of metamaterials, based solely upon the symmetries of the underlying…”
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Active and tunable nanophotonic metamaterials by Fan, Kebin, Averitt, Richard D., Padilla, Willie J.

“…Metamaterials enable subwavelength tailoring of light–matter interactions, driving fundamental discoveries which fuel novel applications in areas ranging from…”
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Experimental realization of a metamaterial detector focal plane array by Shrekenhamer, David, Xu, Wangren, Venkatesh, Suresh, Schurig, David, Sonkusale, Sameer, Padilla, Willie J

“…We present a metamaterial absorber detector array that enables room-temperature, narrow-band detection of gigahertz (GHz) radiation in the S band (2-4 GHz)…”
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A Zero‐Rank, Maximum Nullity Perfect Electromagnetic Wave Absorber by Suen, Jonathan Y., Fan, Kebin, Padilla, Willie J.

“…Electromagnetic wave absorbers formed from a metamaterial layer are demonstrated and near‐perfect absorption is realized across much of the spectrum…”
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Transfer learning for metamaterial design and simulation by Peng, Rixi, Ren, Simiao, Malof, Jordan, Padilla, Willie J.

“…We demonstrate transfer learning as a tool to improve the efficacy of training deep learning models based on residual neural networks (ResNets). Specifically,…”
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Fundamental absorption bandwidth to thickness limit for transparent homogeneous layers by Padilla, Willie J., Deng, Yang, Khatib, Omar, Tarokh, Vahid

“…Past work has considered the analytic properties of the reflection coefficient for a metal-backed slab. The primary result established a fundamental…”
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Loss compensation in metamaterials through embedding of active transistor based negative differential resistance circuits by Xu, Wangren, Padilla, Willie J, Sonkusale, Sameer

“…Dielectric and ohmic losses in metamaterials are known to limit their practical use. In this paper, an all-electronic approach for loss compensation in…”
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Bi-layer metamaterials as fully functional near-perfect infrared absorbers by Adomanis, Bryan M., Watts, Claire M., Koirala, Machhindra, Liu, Xianliang, Tyler, Talmage, West, Kevin G., Starr, Tatiana, Bringuier, Jonathan N., Starr, Anthony F., Jokerst, Nan Marie, Padilla, Willie J.

“…In this letter, we discuss the design, fabrication, and experimental characterization of a bi-layer fully functional near-perfect metamaterial absorber (MMA)…”
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Ultrathin tunable terahertz absorber based on MEMS-driven metamaterial by Liu, Mingkai, Susli, Mohamad, Silva, Dilusha, Putrino, Gino, Kala, Hemendra, Fan, Shuting, Cole, Michael, Faraone, Lorenzo, Wallace, Vincent P., Padilla, Willie J., Powell, David A., Shadrivov, Ilya V., Martyniuk, Mariusz

“…The realization of high-performance tunable absorbers for terahertz frequencies is crucial for advancing applications such as single-pixel imaging and…”
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