High-density Au nanorod optical field-emitter arrays
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berggren_High-density.pdf
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Author(s)
Hobbs, Richard
Yang, Y.
Keathley, Phillip D.
Swanwick, Michael E.
Velasquez-Garcia, L. F.
Kaertner, Franz X.
Graves, William S.
Berggren, Karl K.
Date Issued
October 2014
Journal
Nanotechnology
Publisher
IOP Publishing
Citation
Hobbs, R G, Y Yang, P D Keathley, M E Swanwick, L F Velasquez-Garcia, F X Kartner, W S Graves, and K K Berggren. “High-Density Au Nanorod Optical Field-Emitter Arrays.” Nanotechnology 25, no. 46 (October 30, 2014): 465304.
Version
Author's final manuscript
Abstract
We demonstrate the design, fabrication, characterization, and operation of high-density arrays of Au nanorod electron emitters, fabricated by high-resolution electron beam lithography, and excited by ultrafast femtosecond near-infrared radiation. Electron emission characteristic of multiphoton absorption has been observed at low laser fluence, as indicated by the power-law scaling of emission current with applied optical power. The onset of space-charge-limited current and strong optical field emission has been investigated so as to determine the mechanism of electron emission at high incident laser fluence. Laser-induced structural damage has been observed at applied optical fields above 5 GV m[superscript −1], and energy spectra of emitted electrons have been measured using an electron time-of-flight spectrometer.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Microsystems Technology Laboratories
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT Nuclear Reactor Laboratory
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DOI of Published Version
https://doi.org/10.1088/0957-4484/25/46/465304
