A5047124571- Advanced Thermoelectric Materials and Devices
- Bone Tissue Engineering Materials
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Magnesium Alloys: Properties and Applications
- Semiconductor materials and interfaces
- Magnetic and transport properties of perovskites and related materials
- Aluminum Alloys Composites Properties
- Heusler alloys: electronic and magnetic properties
- 2D Materials and Applications
- Topological Materials and Phenomena
- Quantum and electron transport phenomena
- Chalcogenide Semiconductor Thin Films
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Intermetallics and Advanced Alloy Properties
- Innovative Energy Harvesting Technologies
- Graphene research and applications
- ECG Monitoring and Analysis
- Advanced Thermodynamics and Statistical Mechanics
- Machine Learning in Materials Science
- Electrospun Nanofibers in Biomedical Applications
- Dental Implant Techniques and Outcomes
- Advanced ceramic materials synthesis
- Physics of Superconductivity and Magnetism
North Carolina State University
2016-2025
North Central State College
2017-2024
Oak Ridge National Laboratory
2024
Shahid Beheshti University of Medical Sciences
2021-2023
Iran University of Medical Sciences
2023
McMaster University
2023
University of Isfahan
2023
Sharif University of Technology
2021-2022
Shahid Beheshti University
2021-2022
Alzahra University
2021-2022
The dimensionless thermoelectric figure of merit (ZT) in bismuth antimony telluride (BiSbTe) bulk alloys has remained around 1 for more than 50 years. We show that a peak ZT 1.4 at 100 degrees C can be achieved p-type nanocrystalline BiSbTe alloy. These materials were made by hot pressing nanopowders ball-milled from crystalline ingots under inert conditions. Electrical transport measurements, coupled with microstructure studies and modeling, the improvement is result low thermal...
In this paper we present a detailed theory of electron and thermoelectric transport perpendicular to heterostructure superlattices. This nonlinear regime above barriers is also called thermionic emission. We show that metal-based superlattices with tall can achieve large effective figure merit (ZT > 5 at room temperature). A key parameter achieving high performance the nonconservation lateral momentum during emission process. Conservation consequence translational symmetry in plane...
Computational efficient, quasi-3D model for designing body wearable thermoelectric generators and experimental verification.
In this paper, we explore electron filtering as a technique to increase the Seebeck coefficient and thermoelectric power factor of heterostructured materials over that bulk. We present theoretical model in which can be increased an ${\mathrm{In}}_{0.53}{\mathrm{Ga}}_{0.47}\mathrm{As}$-based composite material. Experimental measurements cross-plane are presented confirm importance decouple electrical conductivity factor.
This article provides the latest advances from NSF Advanced Self-powered Systems of Integrated sensors and Technologies (ASSIST) center. The work in center addresses key challenges wearable health environmental systems by exploring technologies that enable ultra-long battery lifetime, user comfort wearability, robust medically validated sensor data with value added multimodal sensing, access to open architecture streams. vison ASSIST is use nanotechnology build miniature, self-powered,...
Bone healing can be significantly expedited by applying electrical stimuli in the injured region. Therefore, a three-dimensional (3D) ceramic conductive tissue engineering scaffold for large bone defects that locally deliver is highly desired. In present study, 3D scaffolds were prepared employing biocompatible polymer, ie, poly(3,4-ethylenedioxythiophene) poly(4-styrene sulfonate) (PEDOT:PSS), optimized nanocomposite of gelatin and bioactive glass. For vitro analysis, adult human...
A new composition of gelatin/bioactive-glass/silver nanoparticle was synthesized and employed to prepare antibacterial macroporous scaffolds with potential applications in bone tissue engineering. set nanocomposite were developed from an aqueous solution gelatin by freeze-drying crosslinking using genipin at ambient temperature. Silver nanoparticles successfully situ heat treatment reduction as a simple "green" method which acted natural reducing stabilizing agent. The effect the...
Neutrons spot magnetic fluctuations that propel charges in a novel class of paramagnetic thermoelectrics.
Abstract Harvesting body heat using thermoelectricity provides a promising path to realizing self-powered, wearable electronics that can achieve continuous, long-term, uninterrupted health monitoring. This paper reports flexible thermoelectric generator (TEG) efficient conversion of electrical energy. The device relies on low thermal conductivity aerogel–silicone composite secures and thermally isolates the individual semiconductor elements are connected in series stretchable eutectic...
A detailed theory of nonisothermal electron transport perpendicular to multilayer superlattice structures is presented. The current–voltage (I–V) characteristics and the cooling power density are calculated using Fermi–Dirac statistics, density-of-states for a finite quantum well mechanical reflection coefficient. resulting equations valid in wide range temperatures electric fields. It shown that conservation lateral momentum plays an important role device characteristics. If hot electrons...
We have grown composite epitaxial materials that consist of semimetallic ErAs nanoparticles embedded in a semiconducting In0.53Ga0.47As matrix both as superlattices and randomly distributed throughout the matrix. The presence these particles increases free electron concentration material while providing scattering centers for phonons. measure concentration, mobility, Seebeck coefficient discuss their potential use thermoelectric power generators.