Nieva P. – TechConnect Briefs

Development of a Chemically Resistant Coating for a novel Fiber Optic Temperature Sensor embedded in Lithium-ion Batteries

Rameez M.R., Ukata C., Ghannoum A., Nieva P., University of Waterloo, CA

Lithium-Ion batteries are ubiquitous in modern day life, with their market value set to reach more than USD 65 billion in 2023 [1]. Temperature is a key parameter in the safe operation of lithium-ion batteries [...]

Embedded fiber optic sensors for battery performance monitoring in Lithium ion battery cells

Alemohammad H., Ghannoum A., Zdravkova L., Iyer K., Nieva P., Yu A., Khajepour A., Nieva P., Yu A., Khajepour A., University of Waterloo, CA

This paper is focused on the development of an embedded fiber optic sensor for monitoring the performance of Lithium ion battery (LIB) cells. The number of LIB cells are proliferating mainly due to the global [...]

Effect of Nonlinear Structural Stiffness on the Response of Capacitive MEMS Devices

Shavezipur M., Nieva P., Khajepour A., Hashemi S.M., University of Waterloo, CA

In this paper, a design technique is presented that can linearize the response of MEMS capacitive elements such as tunable capacitors, capacitive sensors and out-of-plane electrostatic actuators. The method combinations the electrode flexibility and nonlinear [...]

A Parallel-plate-based Fishbone-Shape MEMS Tunable Capacitor with Linear Capacitance-Voltage Response

Shavezipur M., Nieva P., Khajepour A., Hashemi S.M., University of Waterloo, CA

Conventional designs for MEMS parallel-plate tunable capacitor suggest rectangular electrodes and linear structural stiffness which offer high Q-factor and quick responses; however, they have low tunability of 50% and nonlinear capacitance-voltage responses. This paper presents [...]

A Novel Virtual Button User Interface for Determining the Characteristics of an Impulse Input Based on MEMS Inertial Sensors

Zwart A., Effa D., Nieva P., Lancaster-Larocque S., University of Waterloo, CA

This paper introduces a novel application of MEMS accelerometer in consumer electronics device for a ‘Virtual Button’ Technology. MEMS based accelerometers is designed in order to measure low-g acceleration to sense tapping motion on the [...]

A Multi-Purpose Optical MEMS Sensor for Harsh Environments

Nieva P., McGruer N., Adams G., University of Waterloo, CA

This paper presents the development and experimental analysis of a new multi-purpose optical MEMS (micro-electro-mechanical system) sensor for harsh environments. The sensor can be used as a displacement sensor, accelerometer, seismometer, and with some minor [...]