نتایج جستجو برای: optical comsol pin structure

تعداد نتایج: 1813165  

2017
Jiawen Ma Tian Wang Vedran Lovric Kenneth A. Johnson William R. Walsh

BACKGROUND The physis is the weakest component of immature long bones, and physeal fractures constitute about 30% of fractures in growing dogs. Fractures of the proximal humeral physis typically have a Salter Harris type I or II configuration. These fractures require accurate reduction and adequate stabilization to allow for any potential continued longitudinal bone growth, in conjunction with ...

2016
NATHAN BURFORD MAGDA EL-SHENAWEE

This work presents a computational approach for investigating terahertz photoconductive antennas with enhanced performance via thin-film plasmonic electrode configurations. The commercially available finite element method solver COMSOL Multiphysics is implemented to solve Maxwell’s wave equations along with the coupled drift-diffusion/Poisson’s equations. The proposed approach is compared with ...

Journal: :Optics express 2012
Amir Hosseini Xiaochuan Xu Harish Subbaraman Che-Yun Lin Somayeh Rahimi Ray T Chen

We present a dispersion engineered slow light silicon-based photonic crystal waveguide PIN modulator. Low-dispersion slow light transmission over 18 nm bandwidth under the silica light line with a group index of 26.5 is experimentally confirmed. We investigate the variations of the modulator figure of merit, V(π) × L, as a function of the optical carrier wavelength over the bandwidth of the fun...

In this research, we have studied the photonic band structure, optical properties and thermal emission spectrum of 2D Silicon photonic crystal with hexagonal structure. The band structure, band gap map and the gap size versus radius have been calculated by plane wave expansion method. The maximum band gap size of TE (TM) polarization and the complete gap size are 51% (20%) and 17% at air hole r...

In this paper a new design for 6 bit DMTL phase shifter with only 32 MEMS switches is proposed. The reduction in number of switches in ordinary 6 bit phase shifter from 63 to 32 is due to combination of one 5.625 degree for least significant bit and 11.25 degree for the rest of the switches. Decreasing the number of the switches reduces the die-size as well as loss of the CPW line. Analytical s...

Journal: :Lasers in surgery and medicine 2008
Christopher G Rylander Thomas E Milner Stepan A Baranov J Stuart Nelson

BACKGROUND AND OBJECTIVE The complex morphological structure of tissue and associated variations in the indices of refraction of components therein, provides a highly scattering medium for visible and near-infrared wavelengths of light. Tissue optical clearing permits delivery of light deeper into tissue, potentially improving the capabilities of various light-based therapeutic techniques, such...

Introduction:Visualization of inner ear structures is a valuable strategy for researchers and clinicians working on hearing pathologies. Optical coherence tomography (OCT) is a high-resolution imaging technology which may be used for the visualization of tissues. In this experimental study we aimed to evaluate inner ear anatomy in well-prepared human labyrinthine bones.Materials and Methods:Thr...

2015
Manuela Vieira Manuel Augusto Vieira Isabel Rodrigues Vitor Silva Paula Louro

In this paper, we present a wavelength selector based on a monolithic multilayer pi’n/pin a-SiC:H optical filter that requires appropriate near-ultraviolet steady states optical switches to select the desired wavelengths in the visible-near infrared (VIS-NIR) ranges. Results show that the background intensity works as a selector in the infrared/visible regions, shifting the sensor sensitivity. ...

2008
Adel M. Benselama Jérôme Monnier

Droplet impact onto a solid surface is modeled and numerically simulated using an ALE formulation of the Navier-Stokes free surface equations. The triple line dynamics aspect is modeled implicitely through the Shikhmurzaev theory. Those equations involve a generalized Navier slip boundary conditions with the variation of the surface tension near the triple line (thus a local Marangoni effect). ...

Journal: :Frontiers in Materials 2022

A two-dimensional half Maxwell fish-eye lens is compressed using a linear transformation that maps circle to ellipse. The focusing property of the preserved while making device more compact. boundary reflections, investigated for both TE and TM polarizations, were suppressed beams directed toward optical axis lens. designed prototype provided scanning range ±20° with negligible reflections. des...

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