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Outputs (33)

Ultra-stretchable active metasurfaces for high-performance structural color (2023)
Journal Article
Ghasemi, A., Fang, R., Zeze, D. A., & Hedayati, M. K. (2023). Ultra-stretchable active metasurfaces for high-performance structural color. AIP Advances, 13(8), Article 085004. https://doi.org/10.1063/5.0156782

Metamaterials as artificially structural materials exhibit customized properties unattainable in nature. While dynamic response is highly desired, metamaterials are usually passive and cannot be tuned post-fabrication. A conventional active metamater... Read More about Ultra-stretchable active metasurfaces for high-performance structural color.

Mechanically tunable metasurface with large gamut of color: Lateral hybrid system (2022)
Journal Article
Fang, R., Ghasemi, A., Zeze, D. A., & Keshavarz Hedayati, M. (2022). Mechanically tunable metasurface with large gamut of color: Lateral hybrid system. Journal of Applied Physics, 132(13), Article 133102. https://doi.org/10.1063/5.0115964

Hybrid metasurfaces are made of metals and dielectrics in which dielectrics (metals) are sandwiched between metals (dielectrics) to control the reflection and transmission of light. The existing designs have low sensitivity, little color coverage, an... Read More about Mechanically tunable metasurface with large gamut of color: Lateral hybrid system.

Inverse Design of Distributed Bragg Reflectors Using Deep Learning (2022)
Journal Article
Head, S., & Keshavarz Hedayati, M. (2022). Inverse Design of Distributed Bragg Reflectors Using Deep Learning. Applied Sciences, 12(10), Article 4877. https://doi.org/10.3390/app12104877

Distributed Bragg Reflectors are optical structures capable of manipulating light behaviour, which are formed by stacking layers of thin-film materials. The inverse design of such structures is desirable, but not straightforward using conventional nu... Read More about Inverse Design of Distributed Bragg Reflectors Using Deep Learning.

A deep learning approach to the forward prediction and inverse design of plasmonic metasurface structural color (2021)
Journal Article
Roberts, N. B., & Keshavarz Hedayati, M. (2021). A deep learning approach to the forward prediction and inverse design of plasmonic metasurface structural color. Applied Physics Letters, 119(6), Article 061101. https://doi.org/10.1063/5.0055733

This report details a deep learning approach to the forward and inverse designs of plasmonic metasurface structural color. Here, optimized Deep Neural Network models are presented to enable the forward and inverse mapping between metamaterial structu... Read More about A deep learning approach to the forward prediction and inverse design of plasmonic metasurface structural color.

Biodegradable and Insoluble Cellulose Photonic Crystals and Metasurfaces (2020)
Journal Article
Caligiuri, V., Tedeschi, G., Palei, M., Miscuglio, M., Martin-Garcia, B., Guzman-Puyol, S., …Heredia-Guerrero, J. A. (2020). Biodegradable and Insoluble Cellulose Photonic Crystals and Metasurfaces. ACS Nano, 14(8), 9502-9511. https://doi.org/10.1021/acsnano.0c03224

The replacement of plastic with eco-friendly and biodegradable materials is one of the most stringent environmental challenges. In this respect, cellulose stands out as a biodegradable polymer. However, a significant challenge is to obtain biodegrada... Read More about Biodegradable and Insoluble Cellulose Photonic Crystals and Metasurfaces.

Solar Aluminum Kitchen Foils with Omnidirectional Vivid Polarizonic Colors (2019)
Journal Article
Abdelaziz, M., Homaeigohar, S., Hedayati, M. K., Assad, M. A., & Elbahri, M. (2019). Solar Aluminum Kitchen Foils with Omnidirectional Vivid Polarizonic Colors. Advanced Optical Materials, 7(15), Article 1900737. https://doi.org/10.1002/adom.201900737

To meet the need to the “customized eco‐friendly” design of flexible solar materials in vivid colors, here, the solar kitchen foils are devised which are selective, omnidirectional, and colored. The experimental and simulation results enable drawing... Read More about Solar Aluminum Kitchen Foils with Omnidirectional Vivid Polarizonic Colors.

Multifunctional waveguide interferometer sensor: simultaneous detection of refraction and absorption with size-exclusion function (2018)
Journal Article
Zhou, C., Hedayati, M. K., & Kristensen, A. (2018). Multifunctional waveguide interferometer sensor: simultaneous detection of refraction and absorption with size-exclusion function. Optics Express, 26(19), 24372-24383. https://doi.org/10.1364/oe.26.024372

A waveguide Young interferometer is presented with simultaneous detection of complex refractive index of a liquid sample. The real part of the refractive index change (refraction) is detected by tracing phase shifts of the interferogram generated by... Read More about Multifunctional waveguide interferometer sensor: simultaneous detection of refraction and absorption with size-exclusion function.

Optofluidic Sensor for Inline Hemolysis Detection on Whole Blood (2018)
Journal Article
Zhou, C., Hedayati, M. K., Zhu, X., Nielsen, F., Levy, U., & Kristensen, A. (2018). Optofluidic Sensor for Inline Hemolysis Detection on Whole Blood. ACS Sensors, 3(4), 784-791. https://doi.org/10.1021/acssensors.8b00030

Hemolysis is the rupture of red blood cells and constitutes the most common reason for unsuitable blood samples in the clinic. To detect hemolysis, one has to separate the hemoglobin in blood plasma from that in red blood cells. However, current meth... Read More about Optofluidic Sensor for Inline Hemolysis Detection on Whole Blood.

Plasmonic Metaparticles on a Blackbody Create Vivid Reflective Colors for Naked-Eye Environmental and Clinical Biodetection (2017)
Journal Article
Elbahri, M., Abdelaziz, M., Homaeigohar, S., Elsharawy, A., Hedayati, M. K., Roeder, C., …Abdelaziz, R. (2018). Plasmonic Metaparticles on a Blackbody Create Vivid Reflective Colors for Naked-Eye Environmental and Clinical Biodetection. Advanced Materials, 30(4), Article 1704442. https://doi.org/10.1002/adma.201704442

Plasmonic dipoles are famous for their strong absorptivity rather than their reflectivity. Here, the as‐yet unknown specular reflection and the Brewster effect of ultrafine plasmonic dipoles, metaparticles, are introduced and exploited as the basis o... Read More about Plasmonic Metaparticles on a Blackbody Create Vivid Reflective Colors for Naked-Eye Environmental and Clinical Biodetection.

A Novel Nanohybrid Nanofibrous Adsorbent for Water Purification from Dye Pollutants (2016)
Journal Article
Homaeigohar, S., Zillohu, A. U., Abdelaziz, R., Hedayati, M. K., & Elbahri, M. (2016). A Novel Nanohybrid Nanofibrous Adsorbent for Water Purification from Dye Pollutants. Materials, 9(10), Article 848. https://doi.org/10.3390/ma9100848

In this study, we devised a novel nanofibrous adsorbent made of polyethersulfone (PES) for removal of methylene blue (MB) dye pollutant from water. The polymer shows a low isoelectric point thus at elevated pHs and, being nanofibrous, can offer a hug... Read More about A Novel Nanohybrid Nanofibrous Adsorbent for Water Purification from Dye Pollutants.

Broadband Anti-Reflective Coating Based on Plasmonic Nanocomposite (2016)
Journal Article
Hedayati, M. K., Abdelaziz, M., Etrich, C., Homaeigohar, S., Rockstuhl, C., & Elbahri, M. (2016). Broadband Anti-Reflective Coating Based on Plasmonic Nanocomposite. Materials, 9(8), Article 636. https://doi.org/10.3390/ma9080636

We report on the fabrication, the characterization, and the optical simulation of a gold–silica nanocomposite and present its integration into a broadband anti-reflective coating (ARC) for a silicon substrate. The two-layer ARC consists of a nanocomp... Read More about Broadband Anti-Reflective Coating Based on Plasmonic Nanocomposite.

Antireflective Coatings: Conventional Stacking Layers and Ultrathin Plasmonic Metasurfaces, A Mini-Review (2016)
Journal Article
Hedayati, M. K., & Elbahri, M. (2016). Antireflective Coatings: Conventional Stacking Layers and Ultrathin Plasmonic Metasurfaces, A Mini-Review. Materials, 9(6), Article 497. https://doi.org/10.3390/ma9060497

Reduction of unwanted light reflection from a surface of a substance is very essential for improvement of the performance of optical and photonic devices. Antireflective coatings (ARCs) made of single or stacking layers of dielectrics, nano/microstru... Read More about Antireflective Coatings: Conventional Stacking Layers and Ultrathin Plasmonic Metasurfaces, A Mini-Review.