The elastic-electrostatic problem domain contains two charged bodies-one of them is a deformable elastic body with some geometric restraints, while the other is totally restrained and can be modeled as a rigid fixed body. Stresses, strains and deformations of the elastic body under electrostatic force are the quantities of interest. It is a two-way coupling problem, since the deformations is th...

We investigated the effects of electrostatic interactions on the rate constant (k(p)) for tension-induced pore formation in lipid membranes of giant unilamellar vesicles under constant applied tension. A decrease in salt concentration in solution as well as an increase in surface charge density of the membranes increased k(p). These data indicate that k(p) increases as the extent of electrostat...

This paper describes an electrostatic excited microcantilever sensor operating in static mode that is more sensitive than traditional microcantilevers. The proposed sensor comprises a simple microcantilever with electrostatic excitation ability and an optical or piezoresistive detector. Initially the microcantilever is excited by electrostatic force to near pull-in voltage. The nonlinear behavi...

Presented in this paper is a bi-directional out-of-plane actuator which combines the merits of the electrostatic repulsive principle and the electrostatic attractive principle. By taking advantage of the electrostatic repulsive mode, the common “pull-in” instability can be lessened to enlarge the displacement, and by applying the electrostatic attractive mode, the out-of-plane displacement is f...

Well-posedness of a free boundary problem for electrostatic microelectromechanical systems (MEMS) is investigated when nonlinear bending effects are taken into account. The model describes the evolution of the deflection of an electrically conductive elastic membrane suspended above a fixed ground plate together with the electrostatic potential in the free domain between the membrane and the fi...

ABSTRACT: Electrostatic field measurements under storms have been widely measured in several aims, for current investigation, basically, corona and other phenoma [Lance et al. 1991]. On the other hand the application of the electrostatic field measurement results attractive for lightning hazard warning system. But several phenomena perturb and cause not a full representation of the storm electr...

MOTIVATION Electrostatic calculations are an important tool for deciphering many functional mechanisms in proteins. Generalized Born (GB) models offer a fast and convenient computational approximation over other implicit solvent-based electrostatic models. Here we present a novel GB-based web server, using the program Bluues, to calculate numerous electrostatic features including pKa-values and...

We have demonstrated a family of large force and large displacement electrostatic linear inchworm motors that operate with moderate to high voltages. The inchworm motor design decouples actuator force from total travel and allows the use of electrostatic gap-closing actuators to achieve large force and large displacement while consuming low power. A typical inchworm motor measures 3 mm 1 mm 50 ...

We examine the one-dimensional motion of two similarly charged particles under the influence of only two forces, i.e. their Coulombic repulsion and their gravitational attraction, using the relativistic equation of motion. We find that when the rest mass of the two particles is sufficiently small (∼ 0.4 eV/c) and the initial Coulombic potential energy is sufficiently high (∼ mpc , where mp is t...

600 B.C. Thales of Miletus discovers electrostatic attraction. 1600 A.D. William Gilbert proposes the ‘‘electric fluid’’ model. 1620 A.D. Niccolo Cabeo discusses ‘‘attractive’’ and ‘‘repulsive’’ phenomena. 1729 A.D. Stephen Gray demonstrates ‘‘electricity’’ can be transferred by wires. 1733 A.D. Charles Francois du Fay discusses two kinds of electricity—‘‘resinous’’ and ‘‘vitreous.’’ 1749 A.D. ...