We present results on the development a new micro electromechanical parallel plate tunable capacitor with a wide tuning range. Different from conventional parallel plate tunable capacitors, this new tunable capacitor consists of one suspended movable top plate and two fixed plates. One fixed plate and the top plate form the variable capacitor, while the other, together with the top plate, is us...

Figure 1: Schematic experimental set up. Squeezed film damping (SFD) is a common phenomenon that occurs in many microdevices when a surface moves normally to another solid surface in close proximity. In microelectromechanical systems (MEMS), SFD is often one of the largest sources of parasitic losses. Therefore, an accurate evaluation of hydrodynamic forces due to the SFD effect is critical in ...

Abstract This paper presents a thermo-fluid dynamic analysis in micro-textured evaporator for loop heat pipes (LHPs) that has super wetting surface with ethanol on the basis of an experiment and modeling. In experiment, three kinds stainless steel plates various morphologies transfer surfaces were tested: normal flat plate, sandblasted micro-groove plate. The measured contact angles between 8.2...

The epiphyseal growth plate is a developmental region responsible for linear bone growth, in which chondrocytes undertake a tightly regulated series of biological processes. Concomitant with the cessation of growth and sexual maturation, the human growth plate undergoes progressive narrowing, and ultimately disappears. Despite the crucial role of this growth plate fusion "bridging" event, the p...

A recently developed Finite-Element (FE) model for the precise computation of electrostatic driven MEMS (Micro-ElectroMechanical-Systems) is presented. Thereby, we fully take geometric nonlinearity, contact in the snap-in mode, nonlinear electrostatic coupling forces as well as the moving of charged thin membrane-plate structures (electrodes) in an electric field into account. Furthermore, sinc...

It is a denture type micro electric field loading device design. The device is a removable partial denture, and there are a power supply and the electrode plate in the denture. The electrode plate embedded in the denture base, electrode embedded in the buccal and lingual base, between the base and the artificial teeth is the power supply, the power supply and both sides electrodes connected by ...

Most of MEMS devices are actuated using electrostatic forces. Parallel or lateral plate actuators are the types commonly used. Nevertheless, electrostatic actuation has some limitations due to its non-linear nature. This work presents a methodic overview of the existing techniques applied to the Micro-Electro-Mechanical Systems (MEMS) electrostatic actuation modeling and their implications to t...

Experimental investigations of the liquid transfer between two separating plates have been carried out, with the aim of increasing the ink transfer ratio in micro-gravure-offset printing. A sessile droplet is divided into two by moving one plate vertically with respect to a fixed plate. The surface contact angles of the sessile droplet on the two plates were of particular interest in this study...

A microscopic measurement system of circular dichroic spectra of second harmonic generation, which is applicable to detect the chirality of micro-region of molecular aggregates, has been investigated. The performance of the system was demonstrated by the discrimination of chirality of molecular aggregates of porphyrin on a glass plate.