The response of a polysilicon parallel-plate electrostatic actuator to AC signals at diierent bias voltages has been measured with a laser interferometer. Using microhinges, large plates (with areas from 100m 2 to 0:1mm 2) with long thin support beams (such as 60031:5m 3) are rotated oo the surface of the substrate to form a parallel-plate capacitor. Fabricated structures having 100m gaps can b...

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...

In this paper, we prove that the inverse problems for 2D elasticity and for the thin plate with boundary data (finite or full measurements) are equivalent. Having proved this equivalence, we can solve inverse problems for the plate equation with boundary data by solving the corresponding inverse problems for 2D elasticity, and vice versa. For example, we can derive bounds on the volume fraction...

We propose a new type of crystal growth phenomenon—structure-dependent attachment kinetics—to explain the growth of thin ice plates from the vapor phase at temperatures near 15 C. In particular, we propose that the condensation coefficient for growth of ice prism facets increases dramatically when the width of the facet approaches atomic dimensions. This model reconciles several conflicting mea...

It has been documented that AE signals propagate in thin plates as extensional and flexural plate modes. This was demonstrated using simulated AE sources (pencil lead breaks) by Gorman [1] on thin aluminum and gr/ep composite plates and by Gorman and Prosser [2] on thin aluminum plates. A typical signal from a pencil lead break source which identifies these two modes is shown in Figure 1. AE si...

Thin and slender structures are widely occurring both in nature and in human creations. Clever geometries of thin structures can produce strong constructions while requiring a minimal amount of material. Computer modeling and analysis of thin and slender structures have their own set of problems, stemming from assumptions made when deriving the governing equations. This thesis deals with the de...

Bayesian MAP (maximum a posteriori) methods for SPECT reconstruction can both stabilize reconstructions and lead to better bias and variance relative to ML methods. In previous work [1], a nonquadratic prior (the weak plate) that imposed piecewise smoothness on the first derivative of the solution led to much improved bias/variance behavior relative to results obtained using a more conventional...