title: Simulation and experimental results of optical and thermal modeling of gold nanoshells.
abstract: This paper proposes a generalized method for optical and thermal modeling of synthesized magneto-optical nanoshells (MNSs) for biomedical applications. Superparamagnetic magnetite nanoparticles with diameter of 9.5 ± 1.4 nm are fabricated using co-precipitation method and subsequently covered by a thin layer of gold to obtain 15.8 ± 3.5 nm MNSs. In this paper, simulations and detailed analysis are carried out for different nanoshell geometry to achieve a maximum heat power. Structural, magnetic and optical properties of MNSs are assessed using vibrating sample magnetometer (VSM), X-ray diffraction (XRD), UV-VIS spectrophotometer, dynamic light scattering (DLS), and transmission electron microscope (TEM). Magnetic saturation of synthesized magnetite nanoparticles are reduced from 46.94 to 11.98 emu/g after coating with gold. The performance of the proposed optical-thermal modeling technique is verified by simulation and experimental results.
authors: Laser and Nanobiophotonics Laboratory, Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
authors: Lida
authors: L
authors: Ghazanfari
authors: Laser and Nanobiophotonics Laboratory, Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran. Electronic address: khosrom@mie.utoronto.ca.
authors: Mohammad E
authors: ME
authors: Khosroshahi
mesh_terms: D006046:Gold / Q000737:chemistry*; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D008962:Models, Theoretical; D057145:Nanoshells / Q000737:chemistry*; D010316:Particle Size; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
chemical_list: D058185:Magnetite Nanoparticles; D006046:Gold
keywords: Magneto-optical nanoshells (MNSs); Optical and thermal modeling; Superparamagnetic iron oxide nanoparticles (SPION)