نتایج جستجو برای: electro

تعداد نتایج: 20600  

2010
Thomas E. Giddings Joseph J. Shirron

The EODES suite of electro-optical system models is designed to provide a high-fidelity simulation capability and accurate performance prediction tools. EODES simulations are being used to analyze the performance of existing electro-optical identification (EOID) systems and to inform new system design concepts. Performance prediction tools are being incorporated into tactical decision aids with...

2007
Sean P. Anderson Mikhail Haurylau Jidong Zhang Philippe M. Fauchet

We report the development and characterization of 2-D photonic crystal (PC) microcavity devices on silicon on insulator. The transmission of light through a 2-D PC microcavity near resonance can be switched on and off by modulating the refractive index of the PC. Because silicon has poor electro-optical properties, it is advantageous to insert electro-optic materials inside the air holes. In th...

2010
Feng Zhang Yi Wu Jie Jia Qing-Chuan Guo Yong-Shan Hu

Electroacupuncture, the integration of traditional Chinese acupuncture and modern electrotherapy, has been used for clinical treatment of cerebral ischemic disease in both eastern and western countries; however, the mechanism underlying its effects is still unknown. It is well known that excessive glutamate results in neuronal excitotoxicity after ischemic stroke. Previous studies have indicate...

2002
Ajay Nahata James T. Yardley Tony F. Heinz

We report the demonstration of two-dimensional electro-optic imaging using continuous-wave THz radiation. Two single-frequency laser diodes serve as the optical source for both the generation and detection processes. The generation process occurs by mixing in a photoconductive emitter, while the detection process utilizes an electro-optic crystal and charge coupled device camera. The method per...

2004
R. G. Johnson

Coupled electro-thermal simulations are performed to demonstrate predictive design of microwave devices. These simulations are based on an original, fully physical, thermal impedance matrix approach, capable of describing 'nearly exactly' time-dependent heat flow in complex 3-dimensional systems, whilst requiring no model reduction for electro-thermal CAD. This thermal model is validated by the...

2009
V. K. Stalin

The electrokinetic phenomena is also used for decontamination and enhancement of soil–chemical interaction, apart from electro-osmotic consolidation of dewatering. In this paper, an attempt is made to decontaminate the Na contaminated clay using electro-kinetic principle for varying voltage, spacing and number of electrodes. Box type electrokinetic cell was used for this purpose. Results indica...

Journal: :Physical chemistry chemical physics : PCCP 2015
Jin-Yeon Lee Da-Hee Kwak Young-Woo Lee Seul Lee Kyung-Won Park

The electrocatalytic properties for electro-oxidation reactions of shape-controlled Pt-based catalysts have been improved by alloying with 2nd elements. In this study, we demonstrate cubic PtPd alloy nanoparticles synthesized using a thermal decomposition method. The cubic PtPd nanoparticles exhibit a homogeneous distribution of alloy nanostructures in the presence of Pt and Pd metallic phases....

2004
H. Mohseni

We report on the enhanced electro-optic coefficient of GaInAsP three-step quantum wells ~3SQW! for high power electrorefraction modulator applications. Measured electro-optic coefficient of the 3SQW is nearly three times higher than the conventional rectangular quantum well ~RQW! at l51.55 mm. The enhanced electro-optic effect, combined with a low optical absorption coefficient a,1 cm in the 3S...

1990
G. Pauliat P. Mathey G. Roosen

We demonstrate that the spatially modulated electric field that is associated with a photorefractive grating generates stress and strain components with symmetries that are different from those induced by a uniform electric field. Therefore, because of piezoelectricity and the elasto-optic effect, the symmetries of the effective dielectric and electro-optic constants to be used to describe the ...

2012
Alessandro Belardini

Organic fluorinated materials demonstrate their excellent electro-optic properties and versatility for technological applications. The partial substitution of hydrogen with fluorine in carbon-halides bounds allows the reduction of absorption losses at the telecommunication wavelengths. In these interesting compounds, the electro-optic coefficient was typically induced by a poling procedure. The...

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