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This research concerns on design of high-performance MEMS tuning variable varactor. Varactors can be used as a part of LC-tank of an oscillator. Using MEMS technology causes an improvement in Q factor of varactor to achieve less phase noise and lower power consumption in an oscillator. In this work a two different gap varactor has been used to avoid the pull-in voltage at 2.4 GHz. The expected capacitance...
This paper presents the design and modeling of a MEMS capacitive sensor for use in microassembly processes. Force monitoring is an important aspect in microassembly processes. It can be used to control the movement of the microgripper to properly engage with and release the micropart without physical damages due to excessive force. In this paper, the proposed sensor structure has an overall dimension...
Since the very beginning of the flash memory era, the market has been dominated by the floating gate technology. However, as floating gate flash continues along a very steep scaling path, more and more barriers start to appear, limiting further scaling possibilities of the technology. At the same time, other concepts are preparing to take over. This paper concentrates on the prospect of high-k materials...
Non-parallel electrode plates resulted in further oblique of the upper electrode until it reached another equilibrium position. The relationship between the obliquity beta in the final equilibrium situation and the initial obliquity a is constructed. Efficient failure and analysis are becoming essential in electrostatic parallel-plate especially for high reliability and safety critical applications...
This paper deals with modeling and simulation of electrostatic gyroscope using multidisciplinary computer aided design system ANSYS. Investigation concerning force and displacements are carried out.
A flexible capacitive normal / shear force sensor design is presented. Fabrication on a flexible polyimide substrate allows the sensor to be molded to non-planar gripper surfaces. The ability to measure normal and shear forces will greatly advance the tactile sensing capabilities of articulated grippers. The structure of the sensor also provides the ability to integrate additional sensors into a tactile...
An extension is presented of the work previously introduced by the authors for a single-sibling disintegration of a charged liquid drop. A general theoretical analysis is presented for a multisibling instability. The model, based on treelike secondary breakups, leads to a residual drop and n siblings of different sizes and charges. The role of the external forces on the breakup process and on the...
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