56 research outputs found
Failure Mode Predictions in the Compressive Response of Laminated Composites
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106434/1/AIAA2013-1724.pd
Monitoring Charge Exchange in P3HT-Nanotube Composites Using Optical and Electrical Characterisation
Charge exchange at the bulk heterojunctions of composites made by mixing single wall nanotubes (SWNTs) and polymers show potential for use in optoelectronic devices such as solar cells and optical sensors. The density/total area of these heterojunctions is expected to increase with increasing SWNT concentration but the efficiency of solar cell peaks at low SWNT concentrations. Most researchers use current–voltage measurements to determine the evolution of the SWNT percolation network and optical absorption measurements to monitor the spectral response of the composites. However, these methods do not provide a detailed account of carrier transport at the concentrations of interest; i.e., near or below the percolation threshold. In this article, we show that capacitance–voltage (C–V) response of (metal)-(oxide)-(semiconducting composite) devices can be used to fill this gap in studying bulk heterojunctions. In an approach where we combine optical absorption methods withC–Vmeasurements we can acquire a unified optoelectronic response from P3HT-SWNT composites. This methodology can become an important tool for optoelectronic device optimization
Multi-model finite element scheme for static and free vibration analyses of composite laminated beams
The Nonlinear Behavior of Unidirectional and Laminated Composites-A Micromechanical Approach
Thermal transient stresses due to rapid cooling in a thermally and elastically orthotropic medium
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