نتایج جستجو برای: electrostriction

تعداد نتایج: 212  

2004
Peter Gehring Stanislav Kamba

The effect of electron irradiation on the ferroelectric properties ofLangmuir-Blodgett films of the copolymer poly(vinylidene fluoride-trifluoroethylene) isinvestigated using 1.26 MeV electrons with dosages from 16 to 110 Mrad. Films wereirradiated in the ferroelectric state to investigate the effect of defect introduction inultrathin films. Electron irradiation is known to ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
Olaf Stenull T C Lubensky

We study two aspects of the elasticity of smectic- A elastomers that make these materials genuinely and qualitatively different from conventional uniaxial rubbers. Under strain applied parallel to the layer normal, monodomain smectic- A elastomers exhibit a drastic change in Young's modulus above a threshold strain value of about 3%, as has been measured in experiments by [Nishikawa and Finkelm...

Journal: :General physiology and biophysics 2013
Pavol Vitovič Veronika Subjaková Tibor Hianik

We studied physical properties of the monolayers and bilayer lipid membranes (BLM) formed by calix[6]arene carboxylic acid derivative (CX) and its mixtures with diphytanoylphosphatidylcholine (DPhPC) by means of measurement surface pressure, surface dipole potential and electrostriction. CX forms stable monolayers at an air-water interface and complexes in mixed monolayers contained DPhPC. Cali...

1975
D G Lahoz G Walker

Three theories are outlined to explain the observed forces in fluids. A system-atical analysis, via a number of appropriate experiments with liquids, shows that only one of them is substantially correct. A new method for studying the electrostriction in liquids is presented. Although the technological importance of the electromagnetic forces in fluids seems to be rather secondary, it has been a...

Journal: :Optics express 2013
Wenjun Qiu Peter T Rakich Heedeuk Shin Hui Dong Marin Soljačić Zheng Wang

We develop a general framework of evaluating the Stimulated Brillouin Scattering (SBS) gain coefficient in optical waveguides via the overlap integral between optical and elastic eigen-modes. This full-vectorial formulation of SBS coupling rigorously accounts for the effects of both radiation pressure and electrostriction within micro- and nano-scale waveguides. We show that both contributions ...

Journal: :Physical review 2023

Electrostriction, the deformation of dielectric materials under influence an electric field, is continuous interest in optics. The classic experiment by Hakim and Higham [Proc. Phys. Soc. 80, 190 (1962)] for a stationary field supports different formula electrostrictive force density than recent Astrath et al. [Light Sci. Appl. 11, 103 (2022)] optical field. In this work, we study origin differ...

2017
VICTOR LEFÈVRE OSCAR LOPEZ - PAMIES

This paper presents the derivation of the homogenized equations for the macroscopic 5 response of elastic dielectric composites containing space charges (i.e., electric source terms) that 6 oscillate rapidly at the length scale of the microstructure. The derivation is carried out in the setting 7 of small deformations and moderate electric fields by means of a two-scale asymptotic analysis. 8 T...

2005
S. Chakraborty S. K. Ghosh S. K. Sarkar

If the rotational symmetry of single mode (S.M.) fiber is disturbed, either during manufacturing or through some external perturbation the polarization modes have different propagation constant. Due to this generated birefringence, the linear polarized light through S.M. fiber is distributed in two orthogonal eigenmodes. As a result, the state of polarization (SOP) is changed at the exit end of...

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