Clark J.V. – TechConnect Briefs

Compact Modeling of MEMS Contact Current upon Pull-In

Røst H.I., Clark J.V., Pister K.S.J., Auburn University, US

This work-in-progress presents a parameterizable compact model of a microelectromechanical system (MEMS) beam element that includes mechanical contact and electrical current flow upon gap closure. Quasistatic electromechanical simulation analyses include the initial onset of pull-in [...]

Wideband high-Q nonlinear resonance for MEMS

Clark J.V., Han Y., Abrol A., Zun Z., Auburn University, US

We examine high quality factor (Q) nonlinear wide- bandwidth resonance for microelectromechanical systems (MEMS) by mimicking high nonlinearity in stiffness by force feedback. The Q and bandwidth are usually thought of as being inversely proportional [...]

Low-Latency Analog Processors for Performance Control of MEMS

Han Y., Zhu Z., Abrol A., Clark J.V., Auburn University, US

Towards faster feedback response for controlling the performance of microelectromechanical systems (MEMS), we present the first use of the mathematical processing properties of bipolar junction transistors (BJT) for such control. This concerns a type of [...]

A More Accurate and Precise Method to Calibrate Atomic Force Microscope (AFM) Cantilevers

Clark J.V., Auburn University, US

This paper presents a method for using a calibrated microelectromechanical system (MEMS) device to calibrate an atomic force microscope (AFM) cantilever. Measure- ments of stiffness and deflection can be made with quantifiable uncertainty. The popular [...]

Measuring the layer thickness of MEMS using torsional resonance

Andrews N.D., Clark J.V., Purdue University, US

In this work we propose a method to measure the structural layer thickness of MEMS using torsional resonance. The thickness of structures often has measurable influences on the mechanical, thermal, and electrical behaviors. Measurement of [...]

An Online Mems Design Tool That Lays Out and Simulates a Parameterized Array from a Reference Device

Marepalli P., Clark J.V., Purdue University, US

We present an online MEMS design tool that lays out and simulates a parameterized array from a reference device. These automated features are implemented in our tool called SugarCube, which is readily available on nanoHUB.org. [...]

A Systems Design Framework Based in Matlab That Integrates Sugar, Spice, Simulink, Fea Comsol, and GDS-II Layout

Marepalli P., Clark J.V., Purdue University, US

We present a systems design framework called iSUGAR that integrates SUGAR, SPICE, SIMULINK, FEA COMSOL, and GDS-II layout. SUGAR is known for its ease and speed of complex MEMS configuration and parameterization; SPICE is known [...]

Simplifying the Designing of a MEMS-based Nanoscale Material Testing Device

Bansal R., Clark J.V., Purdue University, US

Microelectromechanical-systems (MEMS) are increasingly used for accurate mechanical characterization of nanostructures. However, the performance of such systems highly depends on their structural design. Optimizing the performance of the device using distributed analysis is computationally expensive, [...]

Lumped Modeling of Carbon Nanotubes for M/NEMS Simulation

Bansal R., Clark J.V., Purdue University, US

The construction and analysis of the CNT structure is extremely difficult and requires expertise in nanostructure physics. This limits access to molecular dynamics specialists and does not allow the exploration of CNTs as components of [...]

SUGARX: A Online Tool That Bridges the Gap Between Experiment and Simulation

Marepalli P., Li F., Clark J.V., Purdue University, US

We present a pioneering online tool called SugarX that, for the first time, bridges the gap between experiment and simulation. Our tool is available online at nanoHUB.org with remote experimental control and simulation. A web [...]