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Summary Sentence: Join Materials Science and Engineering guest speaker Richard Vaia as he presents "From the Beaker to an Engineering Platform: Photonic Nanocomposites".
Full Summary: No summary paragraph submitted.
Richard Vaia From the Beaker to an Engineering Platform: Photonic Nanocomposites
Richard Vaia, Air Force Research National Lab, Materials and Manufacturing Directorate,
Wright-Patterson Air Force Base;
OH, USA 45433-781
Abstract
Efficient focusing of light to the nanoscale is foundational to many emerging technologies, ranging from optogenetics and quantum communication, to chemical sensing, hyperspectral imaging and additive manufacturing. Plasmonic nanoparticles and low-dimensional direct-bandgap semiconductors exhibit some of the strongest optical interactions in nature, with cross-sections equal to or greater than the nanoparticle volume. In addition to composition, the strength of this light-matter interaction, its nonlinearities, and the subsequent radiative and non-radiative processes can be engineered through nanoparticle size, shape and their near-neighbor arrangement. Transitioning this potential to optical-quality coatings and bulk structures however require additional innovations that combine scalable nanoparticle fabrication with modular surface chemistry and robust processability. Focusing on gold nanorods (AuNR) and layered transition metal dichalcogenides, current efforts on nanoparticle scale-up, functionalization, discrete cluster assembly, separation, and post-deposition modification will be discussed. The ensuing control of nanoparticle distribution enables production of voxelated nanocomposites with excellent thermomechanical integrity that exhibit plasmon-plasmon and exciton-plasmon coupling, including polarization sensitivity, fano-resonances, plasmon-induced transparency, enhanced emission efficiency, and nonlinear second harmonic and chiro-optical response.
Biography
Richard A. Vaia is the Technical Director of the Functional Materials Division at the U.S. Air Force Research Laboratory (AFRL). The 200+ scientists and engineers he leads delivers materials and processing solutions to revolutionize AF capabilities in Survivability, Directed Energy, Reconnaissance and Human Performance. Additionally, Rich has published more than 200 articles on nanomaterials, with honors including the AF McLucas Award for Basic Research, ACS Doolittle Award, Air Force Outstanding Scientist, Air Force Office of Scientific Research Star Teams, and Fellow of the Materials Research Society, American Physical Society, American Chemical Society, and the Air Force Research Laboratory.
http://science.dodlive.mil/2014/10/13/meet-the-scientist-dr-richard-vaia/
Reception at 3:30 p.m. in the Georgia Tech Manufacturing Atrium
