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Search: authors:"Mohamed A. Swillam"

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Broadband MIR harvester using silicon nanostructures

In this work, we propose an all-silicon-based super absorber in the mid infrared (MIR) spectral range. The presented structures are composed of n-doped silicon nanoparticles or nanowires embedded in intrinsic silicon. An intense absorption peak is observed and could be tuned across the MIR range. While nanoparticles give a single broad absorption peak, the nanowires structure...

One step fabrication of Silicon nanocones with wide-angle enhanced light absorption

We report the fabrication of an array of random Silicon nanocones using a KrF excimer laser. A 370 nm thick amorphous Silicon layer deposited on a glass substrate was used in the process. The fabricated nanocones showed a large and broadband absorption enhancement over the entire visible wavelength range. An enhancement up to 350% is measured at λ = 650 nm. Additionally, the...

Tunable Mid IR focusing in InAs based semiconductor Hyperbolic Metamaterial

• Google Scholar Search for Mohamed A. Swillam in:Nature Research journals • PubMed • Google Scholar Contributions M.D. and A.M.M. designed the structure. M.D. conducted the numerical calculations and ... . Corresponding author Correspondence to Mohamed A. Swillam. Rights and permissions Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use