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
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Journal ArticleDOI
Nonlinear high-temperature superconducting terahertz metamaterials
Nathaniel K. Grady,Bradford G. Perkins,Harold Y. Hwang,Nathaniel C. Brandt,Darius H. Torchinsky,Ranjan Singh,Li Yan,Daniel T. Trugman,Stuart A. Trugman,Quanxi Jia,Antoinette J. Taylor,Keith A. Nelson,Hou-Tong Chen +12 more
TL;DR: In this paper, the authors report the observation of a nonlinear terahertz response of split-ring resonator arrays made of high-temperature superconducting films.
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Spatially encoded, single-shot ultrafast spectroscopies
TL;DR: In this article, the authors analyzed the time-resolution constraints for two single-shot, time-resolved femtosecond spectroscopic techniques, an excite-probe method, and a transient-grating method.
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Mechanical spectra of glass-forming liquids. I. Low-frequency bulk and shear moduli of DC704 and 5-PPE measured by piezoceramic transducers
TL;DR: Dynamic shear and bulk modulus measurements of supercooled tetraphenyl-tetramethyl-trisiloxane and 5-phenyl-4-ether over a range of temperatures close to their glass transition conclude that TTS is obeyed to a good approximation for both the bulk and shear moduli.
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Surface acoustic modes in thin films on anisotropic substrates
TL;DR: In this article, the propagation of surface acoustic modes on the (001) and (111) surfaces of Si coated by a thin isotropic overlayer is studied theoretically and experimentally.
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Molecular influence in high-strain-rate microparticle impact response of poly(urethane urea) elastomers
TL;DR: In this paper, the dynamic deformation response of select model poly(urethane urea) elastomers (PUU) at high strain rates was investigated via an all-optical laser-induced projectile impact test (LIPIT).