In noble metals, surface plasmons may be induced by incident light, resulting in good plasmonic properties that can widely utilized. this work, an optical nanomaterial based on a spherical nanoshell structure consisting of rhodium and dielectric is proposed. The scattering efficiency electric field are calculated via the finite difference time domain method, respectively varying nanoparticle ra...

Recently we reported the detection and sizing of the smallest RNA virus MS2 with a mass of 6 ag from the resonance frequency shift of a whispering gallery mode-nanoshell hybrid resonator (WGM-h) upon adsorption on the nanoshell and anticipated that single protein above 0.4 ag should be detectable but with considerably smaller signals. Here, we report the detection of single thyroid cancer marke...

Optical Properties of Strongly Coupled Plasmon-Exciton Hybrid Nanostructures by Nche Tumasang Fofang Strongly coupled plasmon-exciton hybrid nanostructures are fabricated and their optical properties are studied. The plasmonic and excitonic systems are gold nanoshells and J-aggregates, respectively. Gold nanoshells are tunable plasmonic core-shell nanoparticles which can sustain distinct dipole...

Metal nanoshells are a novel type of composite spherical nanoparticle consisting of a dielectric core covered by a thin metallic shell which is typically gold. Nanoshells possess highly favorable optical and chemical properties for biomedical imaging and therapeutic applications. By varying the relative the dimensions of the core and the shell, the optical resonance of these nanoparticles can b...

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...

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...