J. Powell
Kansas State University
13 Papers
47 Citations
J. Powell is an academic researcher from Kansas State University. The author has contributed to research in topics: Electron & Laser. The author has an hindex of 4, co-authored 10 publications. Previous affiliations of J. Powell include University of Connecticut.
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Papers
Solubility of gold nanoparticles as a function of ligand shell and alkane solvent
Brandon C. Lohman,J. Powell,Sreeram Cingarapu,Christer B. Aakeröy,Amit Chakrabarti,Kenneth J. Klabunde,Bruce M. Law,Christopher M. Sorensen +7 more
TL;DR: The Solubility of nanoparticles ligated with octane- and hexadecanethiol showed decreasing solubility with increasing solvent chain length, and the octanethiol ligated system showed a nonmonotonic solvent carbon number functionality with even numberedsolvents being better solvents than neighboring even numbered Solvents.
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Interplay of pulse duration, peak intensity, and particle size in laser-driven electron emission from silica nanospheres
J. Powell,Adam M. Summers,Qingcao Liu,S. J. Robatjazi,Philipp Rupp,Johannes Stierle,Carlos Trallero-Herrero,Matthias F. Kling,Artem Rudenko +8 more
TL;DR: The highest photoelectron energies show a strong size dependence, increasing by a factor of six over the range of particles sizes studied at a fixed intensity, while large nanoparticles, which exhibit stronger near-field localization due to field-propagation effects, observe the emission of much more energetic electrons.
22
Temperature dependent solubility of gold nanoparticle suspension/solutions
J. Powell,R. M. Schwieters,K. W. Bayliff,E. N. Herman,N. J. Hotvedt,J. R. Changstrom,Amit Chakrabarti,Christopher M. Sorensen +7 more
TL;DR: In this article, the authors measured the temperature dependence of thermally reversible solubility for a nanoparticle (NP) suspension/solution and derived the minimum of the interparticle potential.
12
Interplay of pulse duration, peak intensity, and particle size in laser-driven electron emission from silica nanospheres.
J. Powell,Adam M. Summers,Qingcao Liu,S. J. Robatjazi,Philipp Rupp,Johannes Stierle,Carlos Trallero-Herrero,Matthias F. Kling,Artem Rudenko +8 more
TL;DR: In this paper, the results of a systematic study of photoelectron emission from isolated dielectric nanoparticles (SiO2) irradiated by intense 25 fs, 780 nm linearly polarized laser pulses as a function of particle size and laser intensity were presented.
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•Dissertation
Strong-field driven dynamics of metal and dielectric nanoparticles
J. Powell
- 01 Jan 2017
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