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Search Publications by Amit Agrawal

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Displaying 1 - 21 of 21

Revisiting the Photon-Drag Effect in Metal Films

Jared H. Strait, Glenn E. Holland, Wenqi Zhu, Cheng Zhang, Bojan R. Ilic, Amit K. Agrawal, Domenico Pacifici, Henri J. Lezec
The photon-drag effect, the rectified current in a medium induced by conservation of momentum of absorbed or redirected light, is a unique probe of the detailed

Ultrafast Optical Pulse Shaping using Dielectric Metasurfaces

Shawn M. Divitt, Wenqi Zhu, Cheng Zhang, Henri J. Lezec, Amit K. Agrawal
Simultaneous control of individual frequency-comb lines, and their modulation at the repetition-rate of an ultrafast laser represents the ultimate limit of

Origins and Demonstrations of Electrons with Orbital Angular Momentum

Benjamin McMorran, Amit K. Agrawal, Peter Ercius, Vincenzo Grillo, Andrew A. Herzing, Tyler R. Harvey, Martin Linck
The surprising message of the 1992 paper of Allen, Beijersbergen, Spreeuw, and Woerdman (ABSW) was that photons could exhibit orbital motion in free space

Steady State Vapor Bubble in Pool Boiling

An Zou, Ashish Chanana, Amit K. Agrawal, Peter C. Wayner, Jr., Shalabh C. Maroo
Boiling, a dynamic and multiscale process, has been studied for over five decades; however, a comprehensive understanding of the process is still lacking. The

High-contrast and fast electrochromic switching enabled by plasmonics

Ting Xu, Erich C. Walter, Amit K. Agrawal, Christopher C. Bohn, Jeyavel Velmurugan, Wenqi Zhu, Henri J. Lezec, Albert A. Talin
With vibrant colours and simple, room-temperature processing methods, electrochromic polymers have attracted attention as active materials for flexible, low

Efficient diffractive phase optics for electrons

Tyler R. Harvey, Jordan S. Pierce, Amit K. Agrawal, Benjamin McMorran, Peter Ercius, Martin Linck
Electron diffraction gratings can be used to imprint well-defined phase structure onto an electron beam. For example, diffraction gratings have been used to

Effect of Tin Doping on alpha-Fe2O3 Photoanodes for Water Splitting

Christopher C. Bohn, Amit K. Agrawal, Erich C. Walter, Mark D. Vaudin, Andrew A. Herzing, Paul M. Haney, Albert A. Talin, Veronika A. Szalai
Sputtered-deposited films of α-Fe2O3 of thickness 600 nm were investigated as photoanodes for solar water splitting and found to have photocurrents as high as 0

Electron Vortex Beams with High Quanta of Orbital Angular Momentum

Benjamin James McMorran, Amit K. Agrawal, Ian M. Anderson, Andrew A. Herzing, Henri J. Lezec, Jabez J. McClelland, John Unguris
Analogous to vortices in light optical beams, electron optical beams with helical wavefronts carry orbital angular momentum and promise new capabilities for