نتایج جستجو برای: electrooptical effect

تعداد نتایج: 1641783  

Journal: :IEEE Photonics Journal 2021

We propose a theoretical analysis of the stochastic dynamics miniature optoelectronic oscillators (OEOs) based on whispering-gallery mode resonators. The core element in this microwave photonic oscillator is high-Q resonator with quadratic nonlinearity, which simultaneously performs electrooptical modulation, frequency filtering and energy storage. This multi-task allows to feature improved siz...

2013
Manuel Innocent

Space applications require image sensors that are tolerant to the harsh radiation conditions outside the earth’s atmosphere. This paper reports about an ongoing optimization experiment for radiation tolerant 4T pixels. The experiment is conducted in a 0.18μm CMOS image sensor process and involves optimization of both the layout and the process technology. The purpose of the experiment is to min...

1997
Yvan G. Leclerc

The objective of this project is to develop methods to incrementally model and detect changes in the shape or surface material properties of terrain. The model will be derived from range data (such as interferometric synthetic aperture radar (IFSAR) elevation data) and electrooptical (EO) and infrared (IR) imagery. The imagery can be either still images or video data, such as that obtained from...

2004
Dejan Rakovic

In this paper biophysical bases and frontiers of complementary medicine are considered, and essential significance of its resonance microwave (MW)/ultralowfrequency (ULF) electromagnetic (EM)/ionic nature as well as the quantum-holographic "electrooptical" neural-network-like-function of the acupuncture system are pointed out, as supported by microwave resonance therapy (MRT) of the psychosomat...

2012
A. Kapanowski

The exoelectric e ect provides a linear coupling between electric polarization and orientational deformation in liquid crystals. It in uences many electrooptical phenomena and it is used in some bistable nematic devices. A statistical theory of dipole exoelectric polarization in biaxial nematic liquid crystals is used to calculate temperature dependence of order parameters, elastic constants, a...

2010
N. Bennis

Vertically aligned negative nematics are employed in high-end projection applications, where extremely high light fluxes are employed. Under these conditions, the UV photochemical stability of the material becomes an issue that must be included in the characterization process of such devices. Photochemical aging tests for vertically aligned microdisplay, however, must take into account the line...

2017
Natasha Kirova Serguei Brazovskii

Ferroelectricity is a rising demand in fundamental and applied solid state physics. Ferroelectrics are used in microelectronics as active gate materials, in capacitors, electrooptical-acoustic modulators, etc. There is a particular demand for plastic ferroelectrics, e.g. as a sensor for acoustic imaging in medicine and beyond, in shapeable capacitors, etc. Microscopic mechanisms of ferroelectri...

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