University of California Irvine – Page 4

Chemotaxis of Metastatic Breast Cancer Cells in Parallel Gradient Microfluidic Chambers

Saadi W., Wang S-J, Lin F., Jeon N.L., University of California Irvine, US

Chemotaxis plays a key role in cancer metastasis, directing the motility of metastatic cells through gradients of growth factors or other chemoattractants. In order to rigorously characterize the role of growth factors in cancer cell [...]

Detection of DNA Hybridyzation with Impedance Amplifying Labels

Ma K-S, Madou M., Zhou H., Fischetti A., Zoval J., Madou M., University of California Irvine, US

Traditionally used nucleic acid analysis detection platforms rely on fluorescent or radioactive labels. Optical techniques require large and expensive equipment such as automated colorimetric and fluorimetric instruments that greatly increase the cost of the whole [...]

MEMS Gyroscopes with Structurally Decoupled 2-DOF Drive and Sense Mode Oscillators

Acar C., Shkel A.M., University of California Irvine, US

This paper reports a novel 4 degrees-of-freedom (DOF) non-resonant micromachined gyroscope design concept that addresses two major MEMS gyroscope design challenges: eliminating the mode-matching requirement, and minimizing instability and drift due to mechanical coupling between [...]

Dynamically Amplified Rate Integrating Gyroscopes

Painter C., Shkel A., University of California Irvine, US

The paper presents the design, modeling, simulation, and initial characterization of a novel MEMS vibratory rate integrating gyroscope, which uses a dual mass architecture. In contrast to conventional micromachined vibratory gyroscopes which measure angular rate, [...]

Study of a Novel Isotropic Suspension Design for an Angular Gyroscope

Painter C., Shkel A., University of California Irvine, US

This paper describes the analysis of a novel isotropic suspension designed for use in a Micro Electro Mechanical System (MEMS) z-axis angular gyroscope.The suspension,consisting of six concentric interconnected rings rigidly attached to an anchored frame,supports [...]

Performance Limits of Micromachined Tunable-Cavity Filter

Moon J-S., Shkel A., University of California Irvine, US

This paper focuses on the performance limits of a tunable-cavity Fabry-Perot filter (FPF)implemented using MEMS technology.This is a versatile device capable of many functions,including light modulation and high precision sensing.Our goal is to explore challenges [...]

A Design Approach for Robustness Improvement of Rate Gyroscopes

Acar C., Shkel A., University of California Irvine, US

This paper reports a design concept for robustness improvement of micromachined gyroscopes. The novelty of the approach is in expanding the design space of the device by increasing the degrees-of-freedom (DOF) of the system. The [...]