K
Keith A. Nelson
Researcher at Massachusetts Institute of Technology
Publications - 750
Citations - 30478
Keith A. Nelson is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Terahertz radiation & Femtosecond. The author has an hindex of 85, co-authored 727 publications receiving 26755 citations. Previous affiliations of Keith A. Nelson include Harvard University & Philips.
Papers
More filters
Journal ArticleDOI
Rapid and precise determination of zero-field splittings by terahertz time-domain electron paramagnetic resonance spectroscopy.
Jian Lu,I. Ozge Ozel,Carina Belvin,Xian Li,Grigorii Skorupskii,Lei Sun,Benjamin K. Ofori-Okai,Mircea Dincă,Nuh Gedik,Keith A. Nelson +9 more
TL;DR: Single-cycle THz fields induce free-induction decays from high-spin transition-metal complexes, yielding THz EPR spectra and zero-field splitting parameters from a simple tabletop measurement.
Journal ArticleDOI
Impact-induced glass-to-rubber transition of polyurea under high-velocity temperature-controlled microparticle impact
TL;DR: In this article, the temperature-dependent microscale impact response of polyurea at a fixed impact velocity was investigated, and the soft-segmental α2-relaxation was extracted and fit with a Havriliak-Negami function.
Journal Article
Interferometric analysis of laser-driven cylindrically focusing shock waves in a thin liquid layer
Journal ArticleDOI
Applications of Transient Grating Spectroscopy to Radiation Materials Science
Michael P. Short,Cody A. Dennett,Sara E. Ferry,Yang Yang,Vikash K. Mishra,Jeffrey K. Eliason,Alejandro Vega-Flick,Alexei Maznev,Keith A. Nelson +8 more
TL;DR: In this paper, transient grating (TG) spectroscopy was used to study the effects of ion irradiation on microstructural changes in situ and ex-situ, through a suite of single effect and integrated experiments.
Journal ArticleDOI
Terahertz Kerr effect
Matthias C. Hoffmann,Matthias C. Hoffmann,Nathaniel C. Brandt,Harold Y. Hwang,Ka-Lo Yeh,Keith A. Nelson +5 more
TL;DR: In this article, the authors observed optical birefringence in liquids induced by single-cycle THz pulses with field strengths exceeding 100 kV/cm, where the induced change in polarization is proportional to the square of the THz electric field.