activity
20062023
most citedVanadium dioxide as a natural disordered metamaterial: perfect thermal emission and large broadband negative differential thermal emittance

299 citations · 2.5k across the 42 of their papers we have counts for

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Showing physics.opticsShow all

8 papers · 1 filter

physics.optics2023★ 8 cited

Electrically tunable VO2-metal metasurface for mid-infrared switching, limiting, and nonlinear isolation

Jonathan King, Chenghao Wan, Tae Joon Park +4

We demonstrate an electrically controlled metal-VO2 metasurface for the mid-wave infrared that simultaneously functions as a tunable optical switch, an optical limiter with a tunab…

physics.optics2022★ 1 cited

Wavelength-by-wavelength temperature-independent thermal radiation utilizing an insulator-metal transition

Jonathan King, Alireza Shahsafi, Zhen Zhang +7

Both the magnitude and spectrum of the blackbody-radiation distribution change with temperature. Here, we designed the temperature-dependent spectral emissivity of a coating to cou…

physics.optics2020★ 1 cited

Ultrathin broadband reflective optical limiter

Chenghao Wan, Zhen Zhang, Jad Salman +7

Optical limiters are nonlinear devices that feature decreasing transmittance with increasing incident optical intensity, and thus can protect sensitive components from high-intensi…

physics.optics2019

VO2 Nanocrystals for Designer Phase-Change Metamaterials

Jimmy John, Yael Gutierrez, Zhen Zhang +5

Subwavelength nanoparticles can support electromagnetic resonances with distinct features depending on their size, shape and nature. For example, electric and magnetic Mie resonanc…

physics.optics2019★ 139 cited

Temperature-independent thermal radiation

Alireza Shahsafi, Patrick Roney, You Zhou +11

Thermal emission is the process by which all objects at non-zero temperatures emit light, and is well-described by the classic Planck, Kirchhoff, and Stefan-Boltzmann laws. For mos…

physics.optics2019★ 253 cited

Optical properties of thin-film vanadium dioxide from the visible to the far infrared

Chenghao Wan, Zhen Zhang, David Woolf +13

The insulator-to-metal transition (IMT) in vanadium dioxide (VO2) can enable a variety of optics applications, including switching and modulation, optical limiting, and tuning of o…