K
Karthik Thimmavajjula Narasimha
Researcher at Stanford University
Publications - 6
Citations - 93
Karthik Thimmavajjula Narasimha is an academic researcher from Stanford University. The author has contributed to research in topics: Amplitude & Nonlinear system. The author has an hindex of 4, co-authored 6 publications receiving 82 citations. Previous affiliations of Karthik Thimmavajjula Narasimha include SLAC National Accelerator Laboratory.
Papers
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Journal ArticleDOI
Ultralow effective work function surfaces using diamondoid monolayers
Karthik Thimmavajjula Narasimha,Karthik Thimmavajjula Narasimha,Chenhao Ge,Chenhao Ge,Jason D. Fabbri,Jason D. Fabbri,William A. Clay,Boryslav A. Tkachenko,Andrey A. Fokin,Peter R. Schreiner,Jeremy E. P. Dahl,Robert M. Carlson,Zhi-Xun Shen,Nicholas A. Melosh,Nicholas A. Melosh +14 more
TL;DR: It is reported that monolayers of diamondoids effectively confer dramatically enhanced field emission properties to metal surfaces, suggesting a new paradigm for low-work-function coatings based on the design of nanoparticles with stable radical cations.
Journal ArticleDOI
Simplified experimental technique to extract the acoustic radiation induced static strain in solids
TL;DR: In this article, a simplified experimental technique to measure the acoustic radiation induced static strain during the longitudinal acoustic wave propagation in solids is proposed, which prevents the influence of the filter time response characteristics on the measurement.
Journal ArticleDOI
Issues on the pulse-width dependence and the shape of acoustic radiation induced static displacement pulses in solids
TL;DR: In this paper, a numerical simulation of the finite amplitude longitudinal ultrasonic wave propagation in solids has been performed to further verify the pulse width independence of the static displacement pulse and the flat top shape of static displacement.
Journal ArticleDOI
Monochromatic Photocathodes from Graphene-Stabilized Diamondoids
Hao Yan,Karthik Thimmavajjula Narasimha,Jonathan D. Denlinger,Fei Hua Li,Sung-Kwan Mo,J. Nathan Hohman,Jeremy E. P. Dahl,Robert M. K. Carlson,Boryslav A. Tkachenko,Andrey A. Fokin,Peter R. Schreiner,Zahid Hussain,Zhi-Xun Shen,Nicholas A. Melosh +13 more
TL;DR: A graphene-protected diamondoid monolayer photocathode with 4-fold enhancement of stability compared to the bare diamondoid counterpart is reported, which provides a generic approach for stabilizing volatile species on photocathodes surfaces, which could greatly improve performance of electron emitters.
Proceedings ArticleDOI
Experimental issues in the measurement of nonlinearity parameter from static displacement (dc component) generation experiments
TL;DR: In this paper, the abnormal behavior of the nonlinearity parameter evaluated from static displacement generation-based finite amplitude ultrasonic wave propagation experiments at low input amplitudes is considered and the cause of the abnormal variation is found to be due to the resolution of the digitizer.