Modeling & Simulation of Microsystems

On Statistical Variation of MOSFETs Induced by Random-Discrete-Dopants and Random-Interface-Traps

Li Y., Su H-W, Chen C-Y, Chen Y-Y, Cheng H-W, Cheng H-W, Chen C-Y, Chen Y-Y, Cheng H-W, Chang H-T, National Chiao Tung University, TW

Abstract – In this work, we statistically study characteristic fluctuation of 16-nm-gate high-/metal gate (HKMG) MOSFETs by random-discrete-dopants (RDDs) inside silicon channel and random-interface-traps (RITs) at high-k/silicon interface. Randomly generated devices with three-dimensional (3D) RDDs [...]

Finite Element Modeling and Simulation of Piezoelectric Energy Harvesters Fabricated in CMOS Technology

Mok A., Tigli O., University of Miami, US

Here we present a micron scale piezoelectric energy harvester fabricated in a commercial Complementary Metal Oxide Semiconductor (CMOS) technology. It is a trilayer cantilever model clamped on one end. The dimensions of this cantilever are [...]

Design of ASIC Dedicated to Thermal Analysis of Many-Core Architectures

Szermer M., Kotynia L., Pietrzak P., Janicki M., Napieralski A., Technical University of Lodz, PL

The main goal of the paper is to present the design of an ASIC dedicated to thermal analysis of many-core architectures. Due to the fact that the process of designing real multi-core microprocessors is expensive [...]

High-Voltage High Input Impedance Unity-Gain Voltage Buffer

Jankowski M., Napieralski A., Technical University of Lodz, PL

The research presented in this paper is targeted to devise possibly non-complex high-voltage unity-gain buffer well suited for connecting to outputs of current-mode stages. The circuit idea originated from need of buffering a high-voltage current-mode [...]

Linearity evaluation of Silicon Nanowire Surrounding Gate MOSFET for high performance ULSI applications

Aggarwal N., Sikka K., Gupta I., Chaujar R., Delhi Technological University, IN

The inspiration of this work is that the search for high performance ICs has led to scaling of MOSFETs down to sub-50nm regime and thus Silicon Nanowire (SNW) MOSFETs offer a promising solution for realizing [...]

Gas Sensor with SAW Structures

Laposa A., Husak M., Kroutil J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The objective of this paper is presents the modeling and simulation of SAW (Surface Acoustic Wave) gas sensors based on one-port and two-port interdigitated metal structures. These sensors can be used for identifying environmental contaminants [...]

Novel Structure of CMOS Voltage-to-Current Converter for High-Voltage Applications

Jankowski M., Napieralski A., Technical University of Lodz, PL

The research presented in this paper is focused on combining voltage-based and current-based modes of high-voltage analog signal processing. The research originated from necessity of interfacing a large current-mode processing module inside voltage-mode integrated circuit. [...]

Simulation of Removal of Surface-State-Related Lag and Current Slump in GaAs FETs

Hafiz H., Kumeno M., Horio K., Shibaura Institute of Technology, JP

Two-dimensional transient analysis of field-plate GaAs MESFETs is performed in which surface states are considered. Quasi-pulsed current-voltage curves are derived from the transient characteristics. It is shown that drain lag and current slump due to [...]

Electric Double Layer Simulation on Transient State for Sensitivity Enhancement of Affinity-Based Biosensor

Woo J-M, Kim S-H, Park Y.J., Seoul National University, KR

We have presented a numerical simulation for the affinity-based electrical biosensor system on the steady and transient state. Considering the screening length in the solutions, the solution with low ion concentration can be better measurement [...]

Electromechanical response of high frequency silicon nanowire resonators:simulation and measurements

Koumela A., Mercier D., Marcoux C., Purcell S.T., Hentz S., Duraffourg L., CEA-LETI, FR

Electromechanical models of nano-electromechanical devices are usually implemented with specifically developed mathematical software and these models are not easily compatible with circuit simulation software. However, in order to use a nano-device as a sensor, a [...]

Silicon Crystal Effects in Modeling of MEMS Silicon Resonators

Ghaffari S., Ahn C.H., Ng E.J., Kenny T.W., Stanford University, US

Silicon has found considerable application in precision MEMS devices because it provides desirable high frequency and quality factor characteristics. Usually, MEMS resonators are built from single crystal silicon with proven long-term stability. It is experimentally [...]

Squeeze-Film Damping in Perforated Microstructures: Modeling, Simulation and Pressure-Dependent Experimental Validation

Niessner M., Schrag G., Iannacci J., Wachutka G., Münich University of Technology, DE

The reliable estimation of squeeze-film damping (SQFD) is a prerequisite for the design of many microelectromechanical systems (MEMS). The proper operation of several MEMS devices (e.g. accelerometers) often depends crucially on the damping forces, i.e. [...]

Low Motional Impedance Bulk Acoustic Resonators Based on Metamaterials

Rottenberg X., Jansen R., Rochus V., Figeys B., Nauwelaers B., Tilmans H.A.C., IMEC, BE

This paper presents the implementation of propagating acoustic metamaterials in electrostatically transduced Bulk Acoustic Resonators (BARs) to tune by design their characteristic properties. Novel in this paper is our focus on lowering the observed motional [...]

Simulation of a High Compliant Micro Electromagnetic Generator for Energy Harvesting

Wu G-Y, Chen S.J., National Central University, TW

A micro electromagnetic generator for vibration energy harvesting is modeled and simulated. This prototyping electromagnetic generator converts change of magnetic flux to induced electromotive force (EMF) from environmental vibration energy. The mechanical FEA was conducted [...]

Modeling and Simulation of Surface Acoustic Wave Chemical Sensors

Husak M., Laposa A., Kroutil J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

In this paper, we present the design and modeling considerations of SAW (Surface Acoustic Wave) chemical sensors based on various structures. These sensors can be used for identifying environmental contaminants in large applications scale. Various [...]

Novel Nanoelectromechanical Relay Design Procedure for Logic and Memory Applications

Rottenberg X., Rochus V., Jansen R., Ramezani M., Severi S., Witvrouw A., Tilmans H.A.C., IMEC, BE

NanoElectroMechanical Structures/Systems (NEMS) have been the focus of an increasing attention from researchers in recent years for the alternative they offer to conventional CMOS for application in logics, memory and in general digital circuitry. Scaled [...]

Simulation of Gas Flows in Micro Devices by Solving the Boltzmann Kinetic Equation

Anikin Yu.A., Dodulad O.I., Kloss Yu.Yu., Martynov D.V., Tcheremissine F.G., Shuvalov P.V., Moscow Institute of Physics and Technology, National research centre “Kurchatov institute”, RU

Numerical modeling of gas flows in micro devices has practical value due to the high application opportunities of such devices to the relevant industries. Gas behavior is accurately described by the Boltzmann equation of the [...]

FEM study of a 3-axis thermal accelerometer based on free convection in a microcavity

Nguyen H.B., Mailly F., Latorre L., Nouet P., University Montpellier 2 / CNRS - LIRMM, FR

Thermal convective accelerometers are based on heat transfer in a sealed cavity filled with a fluid. The principle was patented in the 40’s and the first implementations on silicon, obtained with bulk micromachining, were reported [...]

Switching and Release Dynamics of an Electrostatically Actuated MEMS Switch under the influence of Squeeze-film Damping

Shekhar S., Vinoy K.J., Ananthasuresh G.K., Indian Institute of Science, IN

This paper reports analytical modeling, simulation and experimental validation for switching and release times of an electrostatically actuated micromachined switch. Presented work is an extension of our earlier work [1] that analytically argued, and numerically [...]

A Numerical Study on THZ-Wave Generation and Detection of Metal-Oxide-Semiconductor Field-effect Transistor

Wang C., Mou X., He H., He J., Ye Y., He H., He J., Cao Y., PKU-HKUST Shenzhen-Hongkong Institution, CN

A numerical method is developed in this paper to simulate FET-based THz wave generation and detection. The method is derived directly from the hydrodynamic equations and implemented in Matlab coding. Simulation results are compared with [...]

Finite Element Modeling of MEMS Piezoelectric Energy Harvester

Beker L., Muhtaroglu A., Ozguven H.N., Kulah H., Middle East Technical University, TR

This paper reports an improved method for modeling and optimization of a MEMS piezoelectric energy harvester (PEH) for a desired frequency range with maximum voltage output using finite element method. Single-degree-of-freedom and distributed parameter modeling [...]

Research on Non-linear Vibration in Micro-machined Resonant Accelerometer

Shuming Z., Yunfeng L., Fan W., Jingxin D., Tsinghua University, CN

This paper analyses the non-linear vibration of the Silicon Oscillating Accelerometer (SOA) by system modeling and simulation, and the optimization designation to weaken the influence of the nonlinear vibration are proposed. With the decreasing of [...]

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