Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 27, Pages 13254-13261Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp204265x
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Funding
- Volkswagen Foundation
- NSF [CBET-0933415]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0933415] Funding Source: National Science Foundation
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Metal nanoparticle structures with a helical arrangement are able to create strong optical chirality and associated circular dichroism (CD). The CD effect in these chiral structures comes from the electromagnetic dipole-dipole interaction between nonchiral nanopartides. In general, the calculated CD spectra are sensitive to the parameters. The shape of the CD spectrum depends on the helix pitch and radius and, sometimes, on the number of particles in a helix. Simulating several geometries, we were able to identify the sets of parameters for which the CD spectrum is very stable against defects or disorder. These results are important for designing novel nanocomposite materials with strong optical chirality in the visible wavelength region.
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