We examine the optical absorption in a hybrid structure composed of metal nanoshell and semiconductor quantum dot, while interacting with linearly polarized probe electromagnetic field. First, we derive equations motion, rotating wave approximation. Then procced to derivation analytical expressions for linear susceptibility dot. The imaginary part expresses coefficient. find that by properly en...

Aims. Our aim is to improve on previous radiative transfer calculations in illuminated cylindrical threads to better understand the physical conditions in cool solar chromospheric and coronal structures commonly observed in hydrogen and helium lines. Methods. We solved the radiative transfer and statistical equilibrium equations in a two-dimensional cross-section of a cylindrical structure orie...

Laser therapy is a minimally invasive alternative to surgical resection, but its use is limited due to the lack of specific heating due to the rate of thermal diffusion in the tissue. Nanoparticles, Nanoshells in particular, can act as intense infrared absorbers allowing enhanced thermal deposition of laser energy into tissue enabling improving the ability to damage larger tissue volumes with l...

The problem of radiationless Förster energy transfer between a donor and an acceptor molecule is studied in the vicinity of a metallic nanorice. Using a recently formulated effective medium theory, the modified dipole–dipole interaction between the molecules in the vicinity of a spheroidal metallic nanoshell can be easily formulated, from which huge enhancement of the energy transfer rate is ob...

We describe the synthesis, characterization, and use of hybrid nanoparticles with a superparamagnetic iron oxide (SPIO) core and a gold nanoshell. These multifunctional nanoparticles, designated SPIO-Au nanoshells, displayed superparamagnetic characteristics and a significant absorbance in the near-infrared (NIR) region of the electromagnetic spectrum. In addition, they exhibited high transvers...

Titania has attracted considerable interest for use in water purification applications due to its excellent photocatalytic activity. To further improve the efficiency of photocatalysis, numerous nanostructures (i.e. nanoparticles, nanotubes, and nanowires) have been proposed to increase the surface area of titania. Despite the high photocatalytic performance of the nanostructured titania, subse...