A5101906521- Carbon Nanotubes in Composites
- Fiber-reinforced polymer composites
- Advanced Sensor and Energy Harvesting Materials
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Graphene research and applications
- High-Velocity Impact and Material Behavior
- Ion-surface interactions and analysis
- Electromagnetic wave absorption materials
- Microstructure and mechanical properties
- Advanced Measurement and Metrology Techniques
- Supercapacitor Materials and Fabrication
- Inertial Sensor and Navigation
- Mechanical and Optical Resonators
- Thermal properties of materials
- Tribology and Wear Analysis
- Synthesis and properties of polymers
- Astronomical Observations and Instrumentation
- Planetary Science and Exploration
- Geophysics and Sensor Technology
- Cellular and Composite Structures
- Smart Materials for Construction
- Metal and Thin Film Mechanics
- Geological and Geochemical Analysis
- Additive Manufacturing and 3D Printing Technologies
Florida Agricultural and Mechanical University
2025
Florida A&M University - Florida State University College of Engineering
2025
University of Wisconsin–Madison
2020-2023
Texas A&M University
2014-2021
Mitchell Institute
2017-2018
Beihang University
2011-2012
Distinct deformation mechanisms that emerge in nanoscale enable the nanostructured materials to exhibit outstanding specific mechanical properties. Here, we present superior microstructure- and strain-rate-dependent penetration energy (up ∼3.8 MJ kg-1) semicrystalline poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) thin films subjected high-velocity (100 m s-1 1 km s-1) microprojectile (diameter: 9.2 μm) impacts. The geometric-confinement-induced nanostructural evolutions...
Achieving extreme dynamic performance in nanofibrous materials requires synergistic exploitation of intrinsic nanofiber properties and inter-fiber interactions. Regardless the superior stiffness strength carbon nanotubes (CNTs), weak nature van der Waals interactions limits CNT mats from achieving greater performance. We present an efficient approach to augment by introducing aramid (ANF) links between CNTs, which forms stronger reconfigurable interfacial hydrogen bonds π-π stacking...
This study explored the use of boron nitride nanotubes (BNNTs) as reinforcing fillers to enhance mechanical properties polymer-derived carbon matrix composites. BNNT-reinforced composites containing 0.5–5 wt% BNNTs were fabricated with pyrolysis conducted at different temperatures. X-ray diffraction and Raman spectroscopy revealed enhanced crystallinity reduced defects in BNNT addition. At 1200 °C temperature, sample shrinkage decreased from 28% control without addition 12% 5 BNNTs,...
Many multifunctional composite structures incorporate porosity at various length scales to increase the available surface area of a functional component. One material system particular interest is activated or porous carbon fibers and nanofibers that can serve as structural reinforcement well providing active for added functionality. A key question in design manufacture these what degree induced pore affects mechanical properties by inducing discontinuities material. To address this problem,...
In this work, a comprehensive multi-resolution two-dimensional (2D) resistor network model is proposed to analyze the electrical conductivity of hybrid nanomaterials made insulating matrix with conductive particles such as CNT reinforced nanocomposites and thick film resistors. Unlike existing approaches, our takes into account impenetrability their random placement within matrix. Moreover, presents detailed description intra-particle via finite element analysis, which authors' best...
We explore the potential for using a brush-coil triblock copolymer to enhance mechanical properties of epoxy resin 3D printing applications. Epoxy resins are widely used in structural material and adhesive have great printing. However, highly brittle nature requires use large concentrations toughening agents that pose significant challenges meeting rheological requirements report reactive block with three distinct blocks can phase separate, chemically crosslink base form spherical...
The shock metamorphism of opal-A induced by supersonic microprojectile impacts in an advanced laser-induced projectile impact test (LIPIT) was investigated using synchrotron X-ray diffraction (XRD) and transmission electron microscopy (TEM). three-dimensional topography the area is similar to meteorite crater that has a circular outline with uplifted rim. post-impact XRD TEM analyses show phase transformation coesite together opal-CT, tridymite, cristobalite. simulation estimates shocked...