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Full-Text Articles in Engineering
Application-Specific Oxide-Based And Metal-Dielectric Thin-Film Materials Prepared By Radio Frequency Magnetron Sputtering, Mohammad Nur-E-Alam, Wade Lonsdale, Mikhail Vasiliev, Kamal Alameh
Application-Specific Oxide-Based And Metal-Dielectric Thin-Film Materials Prepared By Radio Frequency Magnetron Sputtering, Mohammad Nur-E-Alam, Wade Lonsdale, Mikhail Vasiliev, Kamal Alameh
Research outputs 2014 to 2021
We report on the development of several different thin-film functional material systems prepared by radio frequency (RF) magnetron sputtering at Edith Cowan University nanofabrication labs. While focusing on the RF sputtering process optimizations for new or the previously underexplored material compositions and multilayer structures, we disclose several unforeseen material properties and behaviours. Among these are an unconventional magnetic hysteresis loop with an intermediate saturation state observed in garnet trilayers, and an ultrasensitive magnetic switching behaviour in garnet-oxide composites (GOC). We also report on the unusually high thermal exposure stability observed in some nanoengineered metal-dielectric multilayers. We communicate research results related …
Photonic Microstructures For Energy-Generating Clear Glass And Net-Zero Energy Buildings, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, Kamal Alameh
Photonic Microstructures For Energy-Generating Clear Glass And Net-Zero Energy Buildings, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, Kamal Alameh
Research outputs 2014 to 2021
Transparent energy-harvesting windows are emerging as practical building-integrated photovoltaics (BIPV), capable of generating electricity while simultaneously reducing heating and cooling demands. By incorporating spectrally-selective diffraction gratings as light deflecting structures of high visible transparency into lamination interlayers and using improved spectrally-selective thin-film coatings, most of the visible solar radiation can be transmitted through the glass windows with minimum attenuation. At the same time, the ultraviolet (UV) and a part of incident solar infrared (IR) radiation energy are converted and/or deflected geometrically towards the panel edge for collection by CuInSe2 solar cells. Experimental results show power conversion efficiencies in excess …
Solar Energy Harvesting Clear Glass For Building-Integrated Photovoltaics, Kamal Alameh, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, V. Rosenberg
Solar Energy Harvesting Clear Glass For Building-Integrated Photovoltaics, Kamal Alameh, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, V. Rosenberg
Research outputs 2014 to 2021
We propose and demonstrate the concept of an energy-harvesting clear glass panel based on the use of all-inorganic luminophores embedded into a lamination layer in conjunction with low-emissivity coatings and CIS solar cells. Most of the visible solar radiation is transmitted through the laminated glass panel while UV radiation is down-converted and guided together with a part of infrared radiation to the edges for conversion to electricity by solar cells integrated at the edges of the glass panel. Experimental results demonstrate that a 10cmx10cm energy-harvesting clear glass can pass about 70% of the visible solar radiation, block 90% of UV …
Bimetallic Non-Alloyed Nps For Improving The Broadband Optical Absorption Of Thin Amorphous Silicon Substrates, Chee L. Tan, Sung J. Jang, Young M. Song, Kamal Alameh, Yong T. Lee
Bimetallic Non-Alloyed Nps For Improving The Broadband Optical Absorption Of Thin Amorphous Silicon Substrates, Chee L. Tan, Sung J. Jang, Young M. Song, Kamal Alameh, Yong T. Lee
Research outputs 2014 to 2021
We propose the use of bimetallic non-alloyed nanoparticles (BNNPs) to improve the broadband optical absorption of thin amorphous silicon substrates. Isolated bimetallic NPs with uniform size distribution on glass and silicon are obtained by depositing a 10-nm Au film and annealing it at 600°C; this is followed by an 8-nm Ag film annealed at 400°C. We experimentally demonstrate that the deposition of gold (Au)-silver (Ag) bimetallic non-alloyed NPs (BNNPs) on a thin amorphous silicon (a-Si) film increases the film's average absorption and forward scattering over a broad spectrum, thus significantly reducing its total reflection performance. Experimental results show that Au-Ag …