A5028559917- Physics of Superconductivity and Magnetism
- Plasmonic and Surface Plasmon Research
- Superconductivity in MgB2 and Alloys
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic Crystals and Applications
- Transition Metal Oxide Nanomaterials
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Metamaterials and Metasurfaces Applications
- Thermal Expansion and Ionic Conductivity
- Neural Networks and Reservoir Computing
- Nanoporous metals and alloys
- Magnetic properties of thin films
- Quantum and electron transport phenomena
- Iron-based superconductors research
- Magnetic and transport properties of perovskites and related materials
- High-pressure geophysics and materials
- Molecular Junctions and Nanostructures
- Magnesium Alloys: Properties and Applications
- Boron and Carbon Nanomaterials Research
- GaN-based semiconductor devices and materials
- Organic and Molecular Conductors Research
- Magnetic Properties of Alloys
- Force Microscopy Techniques and Applications
- Thermal Radiation and Cooling Technologies
Norfolk State University
2018-2022
King Saud University
2009-2020
University of Memphis
2015
Memphis Health Center
2015
Jamia Millia Islamia
2003-2010
National University of Singapore
2003
A high-performance and flexible NiCO<sub>2</sub>O<sub>4</sub>–GO electrode for supercapacitor applications was fabricated using an electrochemical deposition method.
We explore color switching properties of thin polyaniline (PANI) films deposited on plasmonic nanomesh structures in comparison with the flat gold. The nanostructured systems show a much steeper increasing voltage than prepared substrates. A strong difference between and is also observed at small voltages, where samples often demonstrate an additional feature cyclic voltammetry curves nonmonotonous changes optical properties. Possible origins effects are discussed terms acceleration charge...
The present research focuses on the preparation of ZnO thin films both undoped and doped with varying Cu concentrations (0.0%, 0.8%, 3.0%, 5.0%, 10.0% 20.0%) using sol-gel spin coating technique. optical bandgap (Eg) for is recorded as 3.239 eV shows a little increase to 3.248 when it 0.8% concentration whereas further doping concentration, decreased from 3.107 20% Cu. EU (Urbach Energy) improved enhancement concentration. Ultraviolet (UV) bluegreen band emissions are noticed PL...
Significant photovoltages are observed in permalloy grating-like structures response to pulsed laser light illumination. Electrical signals enhanced at plasmon resonance conditions and show a clear dependence on the magnetic field with characteristic hysteresis. Estimations that effect could not be explained solely by laser-induced heating. Alternative mechanisms discussed.
Abstract We have studied optical properties of single-layer and multi-fold nanoporous gold leaf (NPGL) metamaterials observed highly unusual transmission spectra composed two well-resolved peaks. explain this phenomenon in terms a surface plasmon absorption band positioned on the top broader band, latter being characteristic both homogeneous “solid” inhomogeneous “diluted” Au films. The NPGL were shown to be controlled by external dielectric environments, e.g. water applied voltage an...
Possible modifications in electrochemical reaction kinetics are explored a nanostructured plasmonic environment with and without additional light illumination using cyclic voltammetry (CV) method. In gold, the effect of on anodic cathodic currents is much pronounced than that flat system. The electron-transfer rate shows 3-fold increase under photoexcitation. findings indicate possibility excitations for controlling reactions.
Profile-modulated permalloy films are promising for magneto-optical applications. We show that such systems demonstrate plasmonic properties and have uniaxial in-plane anisotropy, which may allow sharp magnetization switching using SAM of light.
Profile-modulated permalloy films are promising for magneto-optical applications. We show that such systems demonstrate plasmonic properties and have uniaxial in-plane anisotropy, which may allow sharp magnetization switching using SAM of light.
Ultra-thin films of Eu(TTA)3(L1a) have been fabricated by Langmuir-Blodgett technique on plasmonic and dielectric substrates used to probe the effect local environment magnetic dipole emission charge transfer processes.
Electrochromic materials demonstrating reversible color upon application of a small voltage are interest for various optoelectronic applications. Polyaniline (PANI) is promising material due to its high conductivity, contrast in coloration change, low operation voltages, and long-term stability without degradation as compared other conducting polymers. However, very slow switching limits use modern In this work, we explore opportunities enhance PANI performance with effects the modified...
We report on the optical properties of nanoporous gold leaf (NPGL) metamaterials consisting single and multiple-fold layers, having different pore ligament sizes. Due to their complex structure, such have a unique property, which distinguishes them from homogeneous films. Thus, transmission spectra NPGLs feature two characteristic peaks positioned at ~ 490 nm ~560 605 nm. The most notable result this study is that can be tuned by changing dielectric environment applying voltage in an...
Plasmon-enhanced photovoltages in 1D profile-modulated permalloy films strongly depend on magnetic field, with a characteristic hysteresis. The effect is discussed terms of the anomalous Nernst effect.