Journal
NANO LETTERS
Volume 12, Issue 11, Pages 6000-6004Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl303517v
Keywords
Plasmon; UV; cathodoluminescence; nanoparticle; nanorod; aluminum
Categories
Funding
- Robert A. Welch Foundation [C-1220, C-1222]
- National Security Science and Engineering Faculty Fellowship (NSSEFF) [N00244-09-1-0067]
- Air Force Office of Scientific Research (AFOSR) [FA9550-10-1-0469]
- NSF MRI
- Army's in-house laboratory independent research program
- Army Research Office
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1040478] Funding Source: National Science Foundation
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The use of aluminum for plasmonic nanostructures opens up new possibilities, such as access to short-wavelength regions of the spectrum, complementary metal-oxide-semiconductor (CMOS) compatibility, and the possibility of sustainable, mass-producible plasmonic materials Here we examine the properties of individual Al nanorod antennas with cathodoluminescence (CL). This approach allows us to image the local density of optical states (LDOS) of Al nanorod antennas with a spatial resolution less than 20 nm and to identify the radiative modes of these nanostructures across the visible and into the UV spectral range. The results, which agree well with finite difference time domain (FDTD) simulations, lay the groundwork for precise Al plasmonic nanostructure design for a variety of applications.
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