Journal
NANOTECHNOLOGY
Volume 23, Issue 27, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/27/275604
Keywords
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Funding
- Sustainable Energy Education and Research Center
- Center for Materials Innovation
- Center for Materials Processing
- TN-SCORE
- NSF [CMMI-0855949, DMR-0856707]
- US Department of Energy [DE-FG02-84DR45170]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0856707] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0855949] Funding Source: National Science Foundation
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We demonstrate a promising synthesis route based on pulsed laser dewetting of bilayer films (Ag and Co) to make bimetallic nanoparticle arrays. By combining experiment and theory we establish a parameter space for the independent control of composition and diameter for the bimetallic nanoparticles. As a result, physical properties, such as the localized surface plasmon resonance (LSPR), that depend on particle size and composition can be readily tuned over a wavelength range one order of magnitude greater than for pure Ag nanoparticles. The LSPR detection sensitivity of the bimetallic nanoparticles with narrow size distribution was found to be high-comparable with pure Ag (similar to 60 nm/RIU). Moreover, they showed significantly higher long-term environmental stability over pure Ag.
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