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David R. Smith
Researcher at Duke University
Publications - 891
Citations - 102589
David R. Smith is an academic researcher from Duke University. The author has contributed to research in topics: Metamaterial & Antenna (radio). The author has an hindex of 110, co-authored 881 publications receiving 91683 citations. Previous affiliations of David R. Smith include Brunel University London & Princeton University.
Papers
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W-Band Sparse Imaging System Using Frequency Diverse Cavity-Fed Metasurface Antennas
TL;DR: The scaling of the cavity-fed metasurface antenna represents a key step in the development of alternative high-frequency apertures for imaging and beam-forming applications.
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Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D
TL;DR: Gohil et al. as mentioned in this paper used 2D turbulence measurements from the DIII-D tokamak to provide an explanation for how resonant magnetic perturbations (RMPs) raise the L-H power threshold P LH in ITER-relevant low rotation plasmas with favorable ion ∇ B direction.
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Planetary X-ray fluorescence analogue laboratory experiments and an elemental abundance algorithm for C1XS
Shoshana Z. Weider,Bruce Swinyard,Barry Kellett,C. J. Howe,Katherine H. Joy,Ian A. Crawford,Jason Gow,David R. Smith +7 more
TL;DR: In this paper, the role of changing incidence (and phase) angle geometry and sample grain-size on the intensity of XRF from regolith-like samples was investigated as an analogue to planetary X-ray fluorescence missions.
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Suppressing Electron Turbulence and Triggering Internal Transport Barriers with Reversed Magnetic Shear in the National Spherical Torus Experiment
J. L. Peterson,R.E. Bell,Jeff Candy,Walter Guttenfelder,Gregory W. Hammett,S.M. Kaye,B.P. LeBlanc,D. R. Mikkelsen,David R. Smith,Howard Yuh +9 more
TL;DR: Ono et al. as mentioned in this paper used the gyrokinetic code GYRO to identify a strongly upshifted nonlinear critical gradient for thermal transport that depends on magnetic shear.
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Broadly tunable quasi-phase-matching in nonlinear metamaterials
Alec Rose,David R. Smith +1 more
TL;DR: In this paper, a nonlinear MM for second-order harmonic generation at terahertz frequencies was proposed, which is predicted to have a tunable bandwidth of over 100%.