A5020605766- Carbon Nanotubes in Composites
- Graphene research and applications
- Advanced Thermoelectric Materials and Devices
- Additive Manufacturing and 3D Printing Technologies
- Conducting polymers and applications
- Thermal properties of materials
- Supercapacitor Materials and Fabrication
- Advanced Sensor and Energy Harvesting Materials
- Manufacturing Process and Optimization
- Graphene and Nanomaterials Applications
- Thermal Radiation and Cooling Technologies
- Photopolymerization techniques and applications
- Fiber-reinforced polymer composites
- Diamond and Carbon-based Materials Research
- Nanotechnology research and applications
- Polymer composites and self-healing
- Advanced Memory and Neural Computing
- Advancements in Battery Materials
- Organic Electronics and Photovoltaics
- Advanced battery technologies research
- Hydrogels: synthesis, properties, applications
- Electrospun Nanofibers in Biomedical Applications
- Polymer Nanocomposites and Properties
- Membrane Separation Technologies
- Nanopore and Nanochannel Transport Studies
Texas A&M University
2016-2025
Beijing Institute of Technology
2022-2023
Robert Bosch (Germany)
2023
Texas A&M University System
2022
College Station Medical Center
2015-2021
Carnegie Mellon University
2021
Mitchell Institute
2015-2019
Texas Tech University
2007-2016
Institute of Biopolymers and Chemical Fibres
2009
Florida State University
2008
Graphene sheets were produced through chemical exfoliation of natural graphite flake and hydrazine conversion. Subsequently, graphene assembled into a thin film, microscale liquid droplets placed onto the film surface for measurement wettability contact angle. It is found that oxide sheet hydrophilic hydrophobic. Isolated layers seem more difficult to wet in comparison graphite, low adhesion work was graphene-liquid interface. Approximation solid-liquid interfacial energy with equation state...
Isolated graphene sheets were achieved by graphite intercalation and charge-induced exfoliation. The resultant oxide incorporated into polymer composites thermal expansion was investigated a thermo-mechanical analyzer. test results indicated that inclusion of resulted in low coefficients (CTEs), increasing fraction reduced CTEs more significantly. 5 wt % oxide-based composite shows 31.7% reduction below the glass transition temperature. Preliminary measurement conductivity also significantly...
Organic thermoelectric (TE) materials are very attractive due to easy processing, material abundance and environmentally-benign characteristics, but their potential is significantly restricted by the inferior properties. In this work, noncovalently functionalized graphene with fullerene π-π stacking in a liquid-liquid interface was integrated into poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate). Graphene helps improve electrical conductivity while enhances Seebeck coefficient hinders...
Flexible organic-inorganic hybrids are promising thermoelectric materials to recycle waste heat in versatile formats. However, current organic/inorganic suffer from inferior properties due aggregate nanostructures. Here we demonstrate flexible where size-tunable Bi2Te3 nanoparticles discontinuously monodispersed the continuous conductive polymer phase, completely distinct traditional bi-continuous hybrids. Periodic nanofillers significantly scatter phonons while conducting phase provides...
Flexible and solution-printable fullerene/TiS<sub>2</sub> organic/inorganic hybrids with excellent thermoelectric properties are demonstrated.
An effective functionalization method was investigated to take full advantage of the exceptional performance both carbon nanotubes and epoxy polymer for composite application. Epoxy curing agent, EPI-W, grafted single-walled through diazotization. Fourier transformed infrared spectroscopy, Raman differential scanning calorimetry, dynamical mechanical analysis thermo-gravimetric were performed characterize effect. The degree estimated be 1 in 50 carbons nanotube framework. elastic modulus...
We explore the fabric structural effect of thermoelectric textiles on power generation and achieve high density for practical applications.
A super tough hydrogel with tunable mechanical properties was 3D printed.
Freestanding poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires were synthesized by template-confined in situ polymerization, and then integrated into polystyrene sulfonate (PSS)-doped PEDOT tosylate-doped hosts, respectively. The hybrid morphologies characterized atomic force microscopy, indicating the homogeneous dispersion of nanowires. thermoelectric properties resultant hybrids measured, power factor was found to be enhanced 9-fold comparison with PEDOT:PSS mixed 5 vol% dimethyl...
Graphene fiber-based supercapacitors (GFSCs) hold high power density, fast charge–discharge rate, ultralong cycling life, exceptional mechanical/electrical properties, and safe operation conditions, making them very promising to small wearable electronics. However, the electrochemical performance is still limited by severe stacking of graphene sheets, hydrophobicity fibers, complex preparation process. In this work, we develop a facile but robust strategy easily enhance properties...
Hierarchically porous, micropore-domain graphene-based fiber-shaped supercapacitors show high energy density.
Fiber and/or yarn-shaped supercapacitors (FSSCs) have tremendous potential applications in portable and wearable electronics because of their light weight, good flexibility, weavability. However, FSSCs usually show low energy density, which hinders wide electronics. It remains challenging for the to enhance densities without sacrificing flexibility mechanical properties. Herein, we develop a chemical polymerization strategy fabricate core–sheath porous polyaniline nanorods/graphene fibers...
Abstract Single‐walled carbon nanotubes (SWNTs) are functionalized through both covalent and noncovalent bonding approaches to enhance dispersion interfacial bonding. The coefficient of thermal expansion (CTE) the functionalized‐SWNT‐reinforced epoxy composites measured with a mechanical analyzer (TMA). Experimental results indicate that changes glass‐transition temperature ( T g ) in SWNT–polymer dependent upon functionalization methods. CTE below nanocomposites 1 wt % loading is...
The thermogravimetric, mechanical, and electrical properties of composite sheets produced by infiltrating single-wall carbon nanotube films (also known as 'buckypapers') with polycarbonate solution were characterized. showed improved stiffness toughness, while the conductivity decreased, compared to a neat buckypaper. In addition, polycarbonate/buckypaper higher resistance handling processing damages. Experimental results suggest viability infiltration process means toughen buckypapers...
This paper describes an effective method for quantifying the length and distribution of large populations single-wall carbon nanotubes using atomic force microscopy SIMAGIS software. The results measurements were modelled with Weibull distribution, resulting in a statistically confirmed fit. fitted was used to predict effect factor elastic modulus as functions nanotube properties composite materials. prediction shows that tends increase enhanced loading but decrease rising rope diameter....