A5020566739- Fiber-reinforced polymer composites
- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Graphene research and applications
- Carbon Nanotubes in Composites
- Conducting polymers and applications
- Graphite, nuclear technology, radiation studies
- Fuel Cells and Related Materials
- Advanced ceramic materials synthesis
- Coal and Its By-products
- Adhesion, Friction, and Surface Interactions
- Organic Electronics and Photovoltaics
- Thermography and Photoacoustic Techniques
- Thermal Radiation and Cooling Technologies
- Recycling and Waste Management Techniques
- Transition Metal Oxide Nanomaterials
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Catalysis and Hydrodesulfurization Studies
- Nanopore and Nanochannel Transport Studies
University of Kentucky
2014-2024
UV-induced switching from p- to n-type character is demonstrated during deposition of carbon-nanotube-conjugated polymer composites. This opens the possibility photopattern regions within an otherwise p-type film, which has a potential for complementary circuitry or, as shown here, thermoelectric generators made single solution.
Spray-coated multiwalled carbon nanotube/poly(vinylidene fluoride) (MWCNT/PVDF) composite electrodes, scCNTs, with varying CNT compositions (2 to 70 wt %) are presented for use in a simple thermal energy-scavenging cell (thermocell) based on the ferro/ferricyanide redox couple. Their utility direct thermal-to-electrical energy conversion is explored at various temperature differentials and orientations. Performance compared that of buckypaper, 100% sheet material used as benchmark electrode...
Mechanical and thermal property values of carbon fiber-reinforced polymer (CFRP) composites are readily available. However, the small diameter anisotropy filaments pose significant challenges for measuring diffusivity constituent fibers. As a result, literature describes many techniques to address this issue. Here, new method direct, bulk measurement on-axis matrix-free fiber bundle is reported. Aligned tows were uniformly compacted into collimated, cylindrical bundles using heat-shrink...
Carbon fiber reinforced polymer (CFRP) composites offer advantages over traditional metallic structures, particularly specific strength and stiffness, but at much reduced thermal conductivity. Moreover, fiber-to-fiber heat conduction in the composite transverse directions is significantly lower. When these structures contain electronics (heat generators), shortfalls transport can be problematic. Here we report achievement of a continuous, reel-to-reel process for growing short multiwalled...
The thermoelectric properties of flexible thin films fabricated from two commercial poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) formulations filled with multiwalled carbon nanotubes (MWCNT) and nitrogen-doped MWCNT (N-MWCNT) were investigated. A simple spray-coating method for the fabrication such on a polyethylene terephthalate substrate was developed. While increasing concentration had little effect properties, N-MWCNT resulted in emergence an overall n -type...