Md. Abdul Kaium Khan

Electrically Reconfigurable Liquid Metal Nanophotonic Platform for Color Display and Imaging

Md. Abdul Kaium Khan, Shoaib Vasini, Ralu Divan, Peter Qiang Liu

Dynamically tunable optical materials and device architectures are essential for future photonic technologies, yet conventional solid metals lack the intrinsic tunability required for advanced functionalities. Gallium-based liquid metals (LMs) present an appealing alternative thanks to their distinctive mechanical and optical properties; however, …

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Phase Tunable Liquid Metal Reflecting Element for Reconfigurable Reflectarrays

Nathan Chordas-Ewell, Md. Abdul Kaium Khan, Peter Qiang Liu, Jun Hwan Choi

This paper presents the design and implementation of a tunable, liquid metal (LM)-based reflecting element operating in the X-band at 8.5 GHz. The reflecting element achieves phase control by pneumatically extending the liquid metal through fluidic channels molded into polydimethylsiloxane (PDMS) around …

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Wideband SIW antenna for mm-wave band of 5G Communications

Kanaparthi Suresh, Akkala Subba Rao, Jyoti Singhai, Md. Abdul Kaium Khan et autres

Antennas are more effective and useful when they have higher gain along with better efficiency over a larger frequency range. To fulfil this, wide band U type slotted substrate integrated waveguide (SIW) antenna is designed in the context of 5G communications. In …

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Deterministic Fabrication of Liquid Metal Nanopatterns for Nanophotonics Applications

Md. Abdul Kaium Khan, Yaoli Zhao, Shreyan Datta, Puspita Paul et autres

Gallium-based liquid metals (LMs) are widely used for stretchable and reconfigurable electronics thanks to their fluidic nature and excellent conductivity. These LMs possess attractive optical properties for photonics applications as well. However, due to the high surface tension of the LMs, it …

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Carrier transport layer engineering of Cs2TiI2Br4 halide double perovskite solar cell via SCAPS 1D: Approaching the Shockley-Queisser limit

Tasnim Tareq Ferdous, Sadia Sultana Urmi, Md. Abdul Kaium Khan, Mohammad Abdul Alim

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Nanofabrication of EGaIn Liquid Metal Near-Infrared Photonic Structures

Md. Abdul Kaium Khan, Peter Qiang Liu

We demonstrate nanofabrication of eutectic gallium-indium (EGaIn) liquid metal (LM) nanostructures using a facile and reliable method based on selective wetting between gold and EGaIn LM. Nanostructures with critical feature sizes down to ~500 nm are achieved, which show optical responses in …

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Cs2TiI6 (Cs2TiIxBr6-x) Halide Perovskite Solar Cell and Its Point Defect Analysis

Sadia Sultana Urmi, Md. Abdul Kaium Khan, Tasnim Tareq Ferdous, Davoud Adinehloo et autres

This work presents a comprehensive numerical study for designing a lead-free, all-inorganic, and high-performance solar cell based on Cs2TiI6 halide perovskite with all-inorganic carrier transport layers. A rigorous ab initio density-functional theory (DFT) calculation is performed to identify the electronic and optical …

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Highly efficient Cesium Titanium (IV) Bromide perovskite solar cell and its point defect investigation: A computational study

Md. Abdul Kaium Khan, Sadia Sultana Urmi, Tasnim Tareq Ferdous, Sakibul Azam et autres

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2DEG transport properties over temperature for AlGaN/GaN HEMT and AlGaN/InGaN/GaN pHEMT

Md. Abdul Kaium Khan, Mohammad Abdul Alim, Christophe Gaquière

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High-gain and ultrawide-band graphene patch antenna with photonic crystal covering 96.48% of the terahertz band

Md. Abdul Kaium Khan, Md Ibrahim Ullah, Mohammad Abdul Alim

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Numerical development of eco-friendly Cs2TiBr6 based perovskite solar cell with all-inorganic charge transport materials via SCAPS-1D

Saif Ahmed, Farihatun Jannat, Md. Abdul Kaium Khan, Mohammad Abdul Alim

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High-Performance Graphene Patch Antenna with Superstrate Cover for Terahertz Band Application

Md. Abdul Kaium Khan, Md Ibrahim Ullah, Rifat Kabir, Mohammad Abdul Alim

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