mixer uses ac electric field-induced dielectro- phoretic (DEP) forces.17 DEP forces fold and stretch

The propulsion of semiconductor diode nanowires under external AC electric field is described. Such fuel-free electric field-induced nanowire propulsion offers considerable promise for diverse technological applications. PMID:20177595

and proteins. AC electroosmotic flow can be utilized to create micropumps for micro-bio- chips [1]. As a result electroosmotic micropumps. ICEO [4] refers to a phenomenon in which a DC or AC electric field induces charge electrokinetic micropumps: The effect of geometrical confinement, Faradaic ...

The electrostrictive response of proton irradiated poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] thin films, deposited on silicon (Si) substrates, has been characterized. By applying an ac field to the copolymer films, the induced surface displacement of the film along the thickness direction was measured using a laser interferometer. After the proton irradiation, ...

... Title : The Electric Field Induced by a Gravitational Wave in a Superconductor: A Principle for a New Gravitational Wave Antenna. ...

Boundary element methods represent a valuable approach for designing gradient coils; these methods are based on meshing the current carrying surface into an array of boundary elements. The temporally varying magnetic fields produced by gradient coils induce electric currents in conducting tissues and so the exposure of human subjects to these magnetic fields has become a safety concern, especially ...

We study the effects of a static electric field on the photoassociation of a heteronuclear atom pair into a polar molecule. The interaction of permanent dipole moment with a static electric field largely affects the ground state continuum wavefunction of the atom pair at short separations where photoassociation transitions occur according to the Franck-Condon principle. ...

AC electric fields induce redistribution of integral membrane proteins. Cell-surface receptor redistribution does not consistently follow electric field lines and depends critically on the frequency of the applied ac electric fields, suggesting that mechanisms other than electroosmosis are ...

We demonstrate electric-field-induced nuclear spin resonance mediated by the hyperfine field in a GaAs-based semiconductor. Radio frequency (RF) modulation of a gate bias causes oscillations of electron spins forming a domain structure and thereby oscillations of the hyperfine fields to nuclear spins. When the RF frequency corresponds to the nuclear ...

First direct measurements of nonambipolar magnetic fluctuation-induced charge transport in the interior of a high-temperature plasma are reported. Global resistive tearing modes drive the charge transport which is measured in the vicinity of the resonant surface for the dominant core resonant mode. Finite charge transport has two important consequences. ...

First direct measurements of nonambipolar magnetic fluctuation-induced charge transport in the interior of a high-temperature plasma are reported. Global resistive tearing modes drive the charge transport which is measured in the vicinity of the resonant surface for the dominant core resonant mode. Finite charge transport has two important consequences. ...

Alternating current (ac) electric-field-induced microstructures and electrohydrodynamic convection properties were studied for a guest-host liquid crystal (LC) system. The LC (MBBA) was doped with a newly synthesized azo-dye and filled in a LC cell. When the applied ac electric-field voltage was fixed at 13.5 V (Vrms), microstructures ...

The frequency dependent hyperpolarizability of typical donor-acceptor organic nonlinear optical molecules is commonly represented by a nonresonant two-level model, first presented by Oudar and Chemla. We discuss how this model can be extended into the resonant regime, including cases where the molecular transition is described by an inhomogeneously broadened peak. A ...

Electric fields induce forces at the interface between liquids with different electrical properties (conductivity and/or permittivity). We explore how to use these forces for manipulating two coflowing streams of liquids in a microchannel. A microelectrode array is fabricated at the bottom of the channel and one of the two liquids is ...

... to an Electric Field-Induced Dipole Moment Laser. ... Descriptors : *ELECTRIC FIELDS, *DIPOLE MOMENTS, *NITROGEN LASERS, POWER LEVELS ...

... Accession Number : ADA280522. Title : Electric Field Induced Second Harmonic Generation in Germanium Doped Silica Planar Waveguides. ...

... 9 ELECTRIC FIELD INDUCED RECONSTRUCTIONS IN STM EXPERIMENTS ON Au(111) SURFACES by ... 92-05318 92 3 W? 030 o!111 Page 2. ...

The vulnerability of vesicles to electroporation and rupture by externally applied electric fields, combined with the ability of dielectrophoresis and/or AC electroosmosis to manipulate suspended vesicles over micropatterned electrodes suggests new techniques to electrically trigger localized chemical reactions at predetermined positions in microfluidic devices. The electric ...

. O. (1996) Electroanal. Chem. 19, 109�335. 6. Herne, T. M. & Tarlov, M. J. (1997) J. Am. Chem. Soc. 119, 8916�8920. 7. Levicky, R., Herne, T. M., Tarlov, M. J. & Satija, S. K. (1998) J. Am. Chem. Soc., Herne, T. M. & Tarlov, M. J. (1999) Bioconj. Chem. 10, 419�423. 11. Schlereth, D. D. (1999) J

Nanoscale disorder results in severe spectral misalignment of silicon microring resonators and Mach-Zehnder interferometers. We correct for such effects using electric-field-induced waveguide nano-oxidation, demonstrating a tuning wavelength range of several nanometers and 0.002?nm resolution without line shape degradation. Field-induced nano-oxidation is ...

... Abstract : Calculated for a simplified model of the distorted magnetosphere, the electric field induced by the earth's rotation exhibits an azimuthal ...

Flow patterns with both recirculating and unidirectional characteristics are useful for controlled mixing and pumping within microfluidic devices. We have developed a fabrication process that converts injection-molded polymer chips into devices that demonstrate induced-charge electroosmosis (ICEO) effects (1,2) in AC fields. Polymeric insulating posts are coated with metal to ...

A homogeneous spherical volume conductor is used as a model system for the purpose of calculating electric fields induced in the human head by externally applied time-varying magnetic fields. We present results for the case where magnetic field gradient coils, used in magnetic resonance imaging (MRI), form the ...

In a uniform electric field, the structure of an ER fluid is governed by the interplay of long-ranged electric-field-induced interparticle interactions and thermal forces. When the ratio between the average electric energy of the interparticle interactions and the thermal energy exceeds a critical value an ER phase transition occurs (B. Khusid, A. Acrivos, Phys. Rev. E, 52, ...

Within the Luttinger Hamiltonian, electric-field-induced resonant spin polarization of a two-dimensional hole gas in a perpendicular magnetic field was studied. The spin polarization arising from splitting between the light and the heavy hole bands shows a resonant peak at a certain magnetic field. Especially, the competition between ...

We have studied the alignment of colloidal gold nanorods, deposited from solution onto well-defined substrates in the presence of an AC electric field generated by micrometer spaced electrodes. The field strengths employed in our experiments are sufficiently large to overcome the rotational and translation Brownian motion of nanorods. However, despite the large fields, we find ...

When an AC electric field was applied across a small gap between two metal electrodes elevated above a surface, rhodamine-phalloidin-labeled actin filaments were attracted to the gap and became suspended between the two electrodes. The variance ?s²(x)? of each filament's horizontal, lateral displacement was measured as a function of electric field ...

We have investigated the physics of Bloch oscillations (BO) of electrons, engineered in high mobility quantum wells patterned into lateral periodic arrays of nanostructures, i.e. two-dimensional (2D) quantum dot superlattices (QDSLs). A BO occurs when an electron moves out of the Brillouin zone (BZ) in response to a DC electric field, passing back into the BZ on the opposite side. This results in ...

The movement and behaviour of particles suspended in aqueous solutions subjected to non-uniform ac electric fields is examined. The ac electric fields induce movement of polarizable particles, a phenomenon known as dielectrophoresis. The high strength electric fields that are often used in ...

Probing of Electric Field Distribution in ITO/PI/P3HT/Au Using Electric Field Induced Second Harmonic Generation

Page 1. *Electric field induced second harmonic generation in germanium doped silica planar "dtifaeleLporO0 08 . waveguides 0 Sto5nsuppor ...

The authors observe electric field induced Raman scattering from longitudinal optical phonons in CdS. The induced scattering, observed in diagonal polarization for frequencies near the exciton peak, is superimposed on wavevector dependent scattering. The ...

We present a new approach to enhance mixing in T-type micromixers by introducing a constriction in the microchannel under periodic electro-osmotic flow. Two sinusoidal ac electric fields with 180� phase difference and similar dc bias are applied at the two inlets. The out of phase ac electric field ...

Interaction of light and ac electric fields with a nematic liquid crystal (NLC) doped with nanosized second-generation carbosilane codendrimers containing terminal azobenzene fragments has been studied. A first-order Freedericksz transition in the linearly polarized light, accompanied by an intrinsic bistability in a wide region, was observed. An additional ...

... The following grounding and cabling practices are preferred ... radiation field and the electric field induced ... This shield should be earth grounded at its ...

... Ferroelectric fatigue is typified by the loss of ferroelectric polarization induced by the repeated electric field-induced polarization reversal. ...

Microdisks made from GaAs with embedded InAs quantum dots are immersed in the liquid crystal 4-cyano-4'-pentylbiphenyl (5CB). The quantum dots serve as emitters feeding the optical modes of the photonic cavity. By changing temperature, the liquid crystal undergoes a phase transition from the isotropic to the nematic state, which can be used as an effective tuning mechanism of the photonic modes of ...

The size dependence of the photoluminescence spectra from silver nanoparticles embedded in a silica host medium was observed. The quantum yield of the photoluminescence increased when the size of the nanoparticles was decreased. The quantum yield for 8 nm silver nanoparticle was estimated to be on the order of 10?2 which is 108 times higher than the one observed for bulk silver. The two ...

The present paper focuses on magnetoelectric (ME) interactions under ferromagnetic resonance (FMR) in a bilayer of a ferrite and a piezoelectric. Applying a dc electric field perpendicular to the sample plane induces a uniaxial magnetic anisotropy. The effects of flexural deformation and substrate clamping have been considered in determining the electric ...

We researched the properties of magnetoelectric composites between antiferroelectric Pb0.94La0.04(Zr0.55Sn0.3Ti0.15)O3 and magnetic Terfenol-D. The magnetic field enhances the electric field-induced strain and polarization of the composite. The magnetic moment induced by the electric field increases at the electromechanical resonance ...

The suppression of anomalous transport and/or reduction of neoclassical transport caused by the Alfv�n-wave-induced shear of the radial electric field in tokamaks is investigated. The simple quantitative estimates reported in previous papers are checked by a consistent evaluation of the profile of the radial electric field created by the resonant absorption of Alfv�n ...

We investigate the influence of incompatibility and dielectric contrast on the reorientation kinetics of concentrated solutions of lamellar block copolymers in the presence of an external DC electric field. We study solutions of AC diblock copolymer and ABC triblock terpolymers. The inclusion of a short, polar middle block B is used to tailor both the degree of incompatibility ...

Catalytic chemical vapor deposition (CVD) grown multi-walled carbon nanotubes (MWNTs) are treated with HF and deionized water and are then placed into alumina ceramics for improvement of both electrical conductivity and mechanical properties. In particular, an alternating current (ac) electric field is applied during the coagulation of the alumina slurries to induce the ...

Flow patterns with both recirculating and unidirectional characteristics are useful for controlled mixing and pumping within microfluidic devices. We have developed a fabrication process that converts injection-molded polymer chips into devices that demonstrate induced-charge electroosmosis (ICEO) effects (1,2) in AC fields. Polymeric insulating posts are coated with metal to ...

Direct current (DC) transmission lines are often used, for technical and economic reasons, as interconnections in modern high voltage power systems, which are essentially of the alternating current (AC) type. Significant differences exist, however, between the field effects produced in the vicinity of AC and DC transmission lines. DC ...

Lipid vesicles and supported bilayers have been studied as model systems to understand the structures, transport and biological function of cell membranes. In this work, we investigate the AC-electric field induced instability and supported bilayer formation of lipid vesicles on unfavorable solid surfaces by fluorescence microscopy. We ...

The piezoelectric resonance and the ferroelectric hysteresis loopin 8/65/35 lead lanthanum zirconate titanate (PLZT) ceramics were measuredsimultaneously at temperatures ranging from 20 to 140�C. The complexelastic compliance and the complex piezoelectric and dielectric constantswere extracted from the piezoelectric resonance data, while ...