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Full-Text Articles in Engineering
Determining Hydrodynamic Forces In Bursting Bubbles Using Dna Nanotube Mechanics, Rizal F. Hariadi, Erik Winfree, Bernard Yurke
Determining Hydrodynamic Forces In Bursting Bubbles Using Dna Nanotube Mechanics, Rizal F. Hariadi, Erik Winfree, Bernard Yurke
Materials Science and Engineering Faculty Publications and Presentations
Quantifying the mechanical forces produced by fluid flows within the ocean is critical to understanding the ocean’s environmental phenomena. Such forces may have been instrumental in the origin of life by driving a primitive form of self-replication through fragmentation. Among the intense sources of hydrodynamic shear encountered in the ocean are breaking waves and the bursting bubbles produced by such waves. On a microscopic scale, one expects the surface-tension–driven flows produced during bubble rupture to exhibit particularly high velocity gradients due to the small size scales and masses involved. However, little work has examined the strength of shear flow rates …
Dna-Mediated Excitonic Upconversion Fret Switching, Donald L. Kellis, Sarah M. Rehn, Brittany L. Cannon, Paul H. Davis, Elton Graugnard, Jeunghoon Lee, Bernard Yurke, William B. Knowlton
Dna-Mediated Excitonic Upconversion Fret Switching, Donald L. Kellis, Sarah M. Rehn, Brittany L. Cannon, Paul H. Davis, Elton Graugnard, Jeunghoon Lee, Bernard Yurke, William B. Knowlton
Materials Science and Engineering Faculty Publications and Presentations
Excitonics is a rapidly expanding field of nanophotonics in which the harvesting of photons, ensuing creation and transport of excitons via Förster resonant energy transfer (FRET), and subsequent charge separation or photon emission has led to the demonstration of excitonic wires, switches, Boolean logic and light harvesting antennas for many applications. FRET funnels excitons down an energy gradient resulting in energy loss with each step along the pathway. Conversely, excitonic energy upconversion via upconversion nanoparticles (UCNPs), although currently inefficient, serves as an energy ratchet to boost the exciton energy. Although FRET-based upconversion has been demonstrated, it suffers from low FRET …