title: Effect of gold nanoparticles on depolarization characteristics of Intralipid tissue phantom.
abstract: We report results of studies on the effect of different shapes and sizes of gold nanoparticles (GNPs) on the depolarization characteristics of Intralipid tissue phantoms. For a given extinction coefficient, the absorption characteristics of the GNPs contributed more to the depolarization of the turbid medium, and the contribution of scattering was significant only for the larger-sized particles. For rod-shaped GNPs, their depolarization plays an important role in the low scattering regime in which the depolarization properties of the nanoparticles (NPs) dominate in the turbid medium even if the contribution of the scattering from the NPs is about an order of magnitude less. For highly scattering samples, GNP absorption significantly modulates the depolarization spectra of the turbid medium.
authors.affiliation: Laser Biomedical Applications and Instrumentations Division, Raja Ramanna Centre for Advanced Technology, Indore, India.
authors.forename: M K
authors.initials: MK
authors.lastname: Swami
authors.forename: H S
authors.initials: HS
authors.lastname: Patel
authors.forename: P
authors.initials: P
authors.lastname: Geethu
authors.forename: A
authors.initials: A
authors.lastname: Uppal
authors.forename: P K
authors.initials: PK
authors.lastname: Kushwaha
authors.forename: P K
authors.initials: PK
authors.lastname: Gupta
mesh_terms: D000042:Absorption; D006046:Gold / Q000737:chemistry*; D050356:Lipid Metabolism; D053768:Metal Nanoparticles; D055620:Optical Phenomena; D010316:Particle Size; D019047:Phantoms, Imaging
chemical_list: D006046:Gold