23 citations · 30 across the 5 of their papers we have counts for
5 papers
Multidimensional coherent spectroscopy of excitons in -conjugated polymers
Elizabeth Gutiérrez-Meza, Alejandro Vega-Flick, Eric R. Bittner +1
The photophysics of -conjugated polymers has been of considerable interest over the last three decades because of their organic semiconductor properties. Primary photoexcitation…
Transient Grating Spectroscopy of Photocarrier Dynamics in Semiconducting Polymer Thin Films
Wenkai Ouyang, Yu Li, Brett Yurash +5
While charge carrier dynamics and thermal management are both keys to the operational efficiency and stability for energy-related devices, experimental techniques that can simultan…
Reduced thermal conductivity of epitaxial GaAs on Si due to symmetry-breaking biaxial strain
Alejandro Vega-Flick, Daehwan Jung, Shengying Yue +2
Epitaxial growth of III-V semiconductors on Si is a promising route for silicon photonics. Threading dislocations and the residual thermal stress generated during growth are expect…
Contact-based and spheroidal vibrational modes of a hexagonal monolayer of microspheres on a substrate
A. Vega-Flick, R. A. Duncan, S. P. Wallen +6
We study acoustic modes of a close-packed hexagonal lattice of spheres adhered to a substrate, propagating along a high-symmetry direction. The model, accounting for both normal an…
Thermal transport in suspended silicon membranes measured by laser-induced transient gratings
Alejandro Vega-Flick, Ryan A. Duncan, Jeffrey K. Eliason +12
Studying thermal transport at the nanoscale poses formidable experimental challenges due both to the physics of the measurement process and to the issues of accuracy and reproducib…