A5045374356- Nanofluid Flow and Heat Transfer
- Heat Transfer and Optimization
- Metamaterials and Metasurfaces Applications
- Heat Transfer and Boiling Studies
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Heat Transfer Mechanisms
- Neural Networks and Reservoir Computing
- Optical Network Technologies
- Electromagnetic Scattering and Analysis
- Advanced Antenna and Metasurface Technologies
- Advanced Fluorescence Microscopy Techniques
- Plasmonic and Surface Plasmon Research
- Random lasers and scattering media
- Solar Thermal and Photovoltaic Systems
- Nanoparticles: synthesis and applications
- Advanced Optical Imaging Technologies
- Microwave Engineering and Waveguides
- Solar-Powered Water Purification Methods
- Microwave Imaging and Scattering Analysis
- Magneto-Optical Properties and Applications
- Magnetic and Electromagnetic Effects
- Orbital Angular Momentum in Optics
University of Pennsylvania
2020-2024
California University of Pennsylvania
2023
Semnan University
2014-2020
Isfahan University of Technology
2018-2019
In this presentation, flow physics and natural heat transfer of water/Ag nanofluid are implemented by utilizing finite volume method (FVM) considering 0–6% solid nanoparticles in fraction an elliptical‐shaped enclosure affected different attack angles range from 45° to 135°. This survey's foremost objective is find the optimum angle for highest performance studied geometry. The attained results demonstrated that Rayleigh number's augmentation leads buoyancy force amplification...
In recent years, wave-based analog computing has been at the center of attention for providing ultra-fast and power-efficient signal processing enabled by wave propagation through artificially engineered structures. Building on these structures, various proposals have put forward performing computations with waves. Most aimed linear operations, such as vector-matrix multiplications. The weak hardly controllable nonlinear response electromagnetic materials imposes challenges in design...
An experimental investigation was performed with the view to assess heat transfer characteristics of a water-based nanofluid in micro exchanger employed quench high flux heater for industrial and microelectronic cooling applications. The experiments were conducted at fluxes 10–70 kW/m2 nanofluids various mass concentrations 0.1–0.3% passing flow rates 0.1–5 l/min. Thermo-physical properties including thermal conductivity, capacity, density viscosity experimentally measured 40 °C close...
Abstract Experimental investigation was conducted on the thermal performance and pressure drop of a convective cooling loop working with ZnO aqueous nanofluids. The used to cool flat heater connected an AC autotransformer. Influence different operating parameters, such as fluid flow rate mass concentration nanofluid surface temperature heater, drop, friction factor overall heat transfer coefficient investigated briefly discussed. Results this study showed that, despite penalty for ZnO/water...
In this paper, the design process of a novel three-port graphene-based circulator in terahertz (THz) and infrared frequencies is presented. This new structure consists three 120° rotational symmetry branches single-mode waveguides coupled to cavity resonator at center. To achieve nonreciprocity response structure, anisotropic property graphene has been utilized resonator. Owing low insertion loss, wide bandwidth (∼15%), small footprint (∼subwavelength dimension), simple configuration our...
In this paper, a novel structure for graphene-based directional coupler in the THz frequency region is presented. This new configuration consists of two single-mode waveguides, placed side by with some connection gaps between them to allow coupling. Two different types couplers (single-gap and double-gap) are designed at 50[THz]. The simulation results show that single-gap has advantages low insertion loss ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline">...
Wave-based analog computing in the forms of inverse-designed metastructures and meshes Mach–Zehnder interferometers (MZI) have recently received considerable attention due to their capability emulating linear operators, performing vector-matrix multiplication, inverting matrices, solving integral differential equations via electromagnetic wave interaction manipulation such structures. Here, we combine these two platforms propose a wave-based metadevice that can compute scattered fields...
Inverse designed metasurfaces can solve prescribed Fredholm integral equations at optical wavelengths. To this end, a mirror is included to provide the feedback required perform Neumann series that solves equation.
We present a metasurface-based platform that solves Fredholm integral equations of the second kind for free-space radiation. An inverse-designed metagrating is coupled to semitransparent mirror providing feedback in order perform an analog version Neumann series.