$calculate refractive index of core shell nanoparticles$

$calculate refractive index of core shell nanoparticles$

#Calculate refractive index of core shell nanoparticles code#

High–refractive index germanium (Ge) nanowires enhance light absorption in photodetectors in intermediate sizes ( 14). Moreover, dielectric nanostructures, owing to their intrinsic insulating properties, do not deteriorate the electrical properties of photovoltaic devices. With lower intrinsic loss, they show promise in overcoming the shortcoming of plasmonic metallic nanostructures ( 12, 13). Such a shortcoming inevitably limits the performance of optical devices.Īlternatively, high–refractive index dielectric nanostructures have been demonstrated as competitive candidates for high-performance optical devices ( 10, 11). However, metallic nanostructures always demonstrate large parasitic loss in the visible frequency range ( 10). Plasmonic metallic nanostructures play a key role in the optical devices for realizing new functions and improving the performances. Furthermore, Au, Ag, and aluminum (Al) nanostructures integrated into the absorption layer distinctly enhance the light absorption and energy conversion efficiency in photovoltaic devices ( 7– 9). Au and Ag nanoparticles with plasmon resonances improve the sensitivity of biosensors and push the sensitivity toward the single-molecule detection limit ( 6). Silver (Ag) nanoparticles enable electromagnetic energy to be confined and transported below the diffraction limit in plasmonic waveguides, which cannot be realized using conventional waveguides or photonic crystals ( 5). The gold (Au) nanorods facilitate five-dimensional (5D) optical recording based on their excellent wavelength and polarization sensitivity of surface plasmon resonances ( 3, 4). By controlling the geometry and size of metallic nanostructures, electromagnetic waves can be localized and manipulated in nanometer scale. Plasmonic metallic nanostructures have been widely applied in various optical devices, such as optical recording, waveguides, sensors, solar cells, etc. With these unique features, the intrinsically core-shell plasmonic nanostructure paves a new way for designing low-loss and high-performance visible to infrared optical devices. Through integrating the nanocone arrays into a-Si thin film solar cells, up to 15% enhancement of light absorption was predicted in the ultraviolet and visible ranges. On the metallic shell, plasmonic response and strong backward light scattering were observed in the visible frequency range. The insulating (dielectric) core of the nanocone displays an ultrahigh refractive index of up to 5.5 in the near-infrared frequency range. We report on a novel conic plasmonic nanostructure that is made of bulk-insulating topological insulators and has an intrinsic core-shell formation. They demonstrate a variety of novel electronic and optical properties, which make them highly promising electronic, spintronic, and optoelectronic materials. Rice University, 2000.Topological insulators are a new class of quantum materials with metallic (edge) surface states and insulating bulk states.

#Calculate refractive index of core shell nanoparticles code#

More details on theory and code can be found in his dissertation, which can be cited as Oldenburg, S. The Mie theory implementation used here was developed by Steve Oldenburg, President of nanoComposix, as part of his doctoral work at Rice University. The CRC Handbook of Chemistry and Physics and the website are useful references that provide information and literature sources describing the optical properties of a wide range of materials. Material Propertiesĭielectric values in the calculator are taken from literature, and multiple sources may be used for a given material to extend the range of wavelengths that can be used for calculations. A csv file of the data can be downloaded note that the cross-section units in the downloaded data are in units of m 2/particle. Press “Plot!” to calculate the extinction, absorption and scattering cross sections for a single particle. Enter the starting and ending wavelengths of the spectral range to be calculated, and enter the refractive index of the media surrounding the particles. If a Shell material is to be included, select the material and enter the thickness of shell in nanometers, or choose None if no shell is needed. If Other is chosen for the Core Type, enter the refractive index (RI) in the box (note this is the real refractive index only - no absorption component). Select a Core material from the dropdown menu and enter the diameter in nanometers.

$calculate refractive index of core shell nanoparticles$