A5040077420- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Space Science and Extraterrestrial Life
- Chalcogenide Semiconductor Thin Films
- melanin and skin pigmentation
- Quantum Dots Synthesis And Properties
The University of Texas at Austin
2020-2023
When aliovalent dopants are sufficiently segregated to the core or near surface of semiconductor nanocrystals, charge carriers donated by also surface, respectively. In Sn-doped indium oxide we find that this contrast in free carrier concentration creates a and shell with differing dielectric properties results two distinctly observable plasmonic extinction peaks. The trends dual-mode optical response growth differ from core/shell nanoparticles composed traditional metals such as Au Ag. We...
Electron transfer to and from metal oxide nanocrystals (NCs) modulates their infrared localized surface plasmon resonance (LSPR), revealing fundamental aspects of photophysics enabling dynamic optical applications. We synthesized chemically reduced dopant-segregated Sn-doped In2O3 NCs, investigating the influence radial dopant segregation on LSPR modulation near-field enhancement (NFE). found that core-doped NCs show large shifts NFE change during chemical titration, broadband in energy over...
Biological communities are changing rapidly in response to human activities, with the high rate of vertebrate species extinction leading many propose that we midst a sixth mass event. Five past events have most commonly been emphasised across Phanerozoic, last occurring at end Cretaceous, 66 million years ago. Life on Earth has, however, always changed and evolved, known existed now extinct. The question is, activities increasing magnitude into realms rarely seen life history? Considering...
Electron transfer to and from metal oxide nanocrystals (NCs) modulates their infrared localized surface plasmon resonance (LSPR) absorption, revealing fundamental aspects of photophysics providing opportunities for sensing dynamic window technologies. However, the achievable shift LSPR is diminished by presence a near-surface depletion layer with low electron concentration. The also separates plasmonic NC core surrounding environment deleterious effect on near-field enhancement (NFE)...