Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3467263
Keywords
biological effects of optical radiation; biomolecular effects of radiation; microorganisms; nanobiotechnology; nanoparticles; photochemistry; plasmonics; silver; surface plasmon resonance; visible spectra
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Funding
- National Science Foundation [CMMI 0757589]
- University of Tennessee, Knoxville
- Consortium for Clean Coal Utilization at Washington University in Saint Louis
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Photoactivity of green microalgae is nonmonotonic across the electromagnetic spectrum. Experiments on Chlamydomonas reinhardtii (green alga) and Cyanothece 51142 (green-blue alga) show that wavelength specific backscattering in the blue region of the spectrum from Ag nanoparticles, caused by localized surface plasmon resonance, can promote algal growth by more than 30%. The wavelength and light flux of the backscattered field can be controlled by varying the geometric features and/or concentration of the nanoparticles. (C) 2010 American Institute of Physics. [doi:10.1063/1.3467263]
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