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Dynamically Reconfigurable Metadevice Employing Nanostructured Phase-Change Materials
Open accessAbstract
Mastering dynamic free-space spectral control and modulation in the near-infrared (NIR) and optical regimes remains a challenging task that is hindered by the available functional materials at high frequencies. In this work, we have realized an efficient metadevice capable of spectral control by minimizing the thermal mass of a vanadium dioxide phase-change material (PCM) and placing the PCM at the feed gap of a bow-tie field antenna. The device has an experimentally measured tuning range of up to 360 nm in the NIR and a modulation depth of 33% at the resonant wavelength. The metadevice is configured for integrated and local heating, leading to faster switching and more precise spatial control compared with devices based on phase-change thin films. We envisage that the combined advantages of this device will open new opportunities for signal processing, memory, security, and holography at optical frequencies.
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Optical Constants of the Noble Metals
Johnson, P. B., & Christy, R. W. (1972) · Physical Review B · doi:10.1103/physrevb.6.4370 · Cited by 20,094
Magnesium as Novel Material for Active Plasmonics in the Visible Wavelength Range
Sterl, F., Strohfeldt, N., Walter, R., Griessen, R., Tittl, A., & Giessen, H. (2015) · Nano Letters · doi:10.1021/acs.nanolett.5b03029 · Cited by 188
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Spatiotemporal light control with active metasurfaces
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Kruk, S., & Kivshar, Y. (2017) · ACS Photonics · doi:10.1021/acsphotonics.7b01038 · Cited by 643
Active metamaterials and metadevices: a review
Xiao, S., Wang, T., Liu, T., Zhou, C., Jiang, X., & Zhang, J. (2020) · Journal of Physics D: Applied Physics · doi:10.1088/1361-6463/abaced · Cited by 429
Reconfigurable all-dielectric metalens with diffraction-limited performance
Shalaginov, M. Y., An, S., Zhang, Y., Yang, F., Su, P., Liberman, V., Chou, J. B., Roberts, C. M., Kang, M., Rios, C., et al. (2021) · Nature Communications · doi:10.1038/s41467-021-21440-9 · Cited by 428
Recent Advances in Tunable Metasurfaces: Materials, Design, and Applications
Abdelraouf, O. A. M., Wang, Z., Liu, H., Dong, Z., Wang, Q., Ye, M., Wang, X. R., Wang, Q. J., & Liu, H. (2022) · ACS Nano · doi:10.1021/acsnano.2c04628 · Cited by 265
Metadata
- Authors
- Zhu, Z., Evans, P. G., Haglund, R. F., & Valentine, J. G.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-07-28
- Volume
- 17
- Issue
- 8
- Pages
- 4881-4885
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2738707345
- Cited by
- 247
- References
- 2
- FWCI
- 10.37
- Type
- journal article
- Language
- en
- Open access
- green
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