A commonly encountered failure mode in microfluidic devices is delamination between adjacent device layers. Veryst examined the influence of control channel geometry on the delamination pressure of a pneumatic microfluidic valve using finite element analysis.
Manufacturing variations are of critical importance in MEMS design. In this MEMS gyroscope case study, Veryst created an approach to look at the effect of a range of manufacturing variations on MEMS devices using the same mesh. We also use semi-analytic equations to enable scalable modeling of the gyroscope electrostatic actuation and pick-off (which senses the motion produced by rotation).
MEMS mirrors raster the laser beam in many next-generation LiDAR system designs. Constructing a finite element model of a MEMS mirror is challenging, as it is difficult to represent the large number of comb fingers in the comb drives that actuate these devices. Veryst addressed this problem by using mixed analytic and finite element approaches to construct accurate finite element models.
The responses of a MEMS switch immersed in fluids differs from that in a vacuum. Veryst Engineering developed a coupled electrostatic-fluid-structure interaction model to investigate the switch response time, deformation, and energy dissipation.
Knowledge of thin film mechanical properties is important for device operation, reliability, and simulation. Veryst measured the elastic modulus of a low stress silicon nitride thin film using nanoindentation and validated the technique with atomic force microscopy.
Veryst has strong acoustic simulation expertise in a wide variety of applications, including medical devices and wearable technology. In many cases, acoustic problems cannot be solved adequately using a single-physics approach, and Veryst has extensive experience in solving multiphysics problems involving acoustics.
The consultants at Veryst provide failure and root cause analyses using core engineering disciplines to evaluate different failure scenarios. Engineering specialties we apply to failure analyses include: mechanical engineering, materials science (metallurgy, ceramics, polymer science, composites
Accurate simulation of many products now requires a multiphysics approach. Veryst Engineering specializes in multiphysics problems involving solids, fluids, heat transfer, mass transfer, acoustics, and electromagnetics. Our modeling and analysis expertise includes fluid-structure interaction, thermal-structure interaction, structural-acoustic vibrations, conjugate heat transfer, Joule heating, and microwave heating.
Veryst engineers and scientists offer additional specialized expertise in a wide range of important areas, including the following fields. In each case, we concentrate on meeting client need through the application of fundamental engineering science.
Veryst’s mechanical testing capabilities have been developed over the past decade and are motivated by the need for high quality data to characterize complex polymer behavior. We tailor our test programs based on our deep understanding of polymer and material mechanics and the challenges complex
Allyson Hartzell has just published a practical guide to “Avoid these common MEMS failure mechanisms” in an article on the EDN Network’s website. The article provides specific and concrete advice for identifying and avoiding failure mechanisms, as well as helpful tips for system developers.
Veryst is pleased to announce that Allyson Hartzell, an expert in MEMS, was approved as a member of the Advanced Packaging Committee for ECTC (the Electronic Components and Technology Conference) 2017.
NASA (National Aeronautics and Space Administration) Tech Briefs, a design engineering publication focused on reporting significant new technologies, has published an article by Veryst engineers Allyson Hartzell and Andrew Spann titled “Solving the Interconnect Challenge: How to Bring Flexibility to Wearable Design.”
MEMS and sensors expert Allyson Hartzell is a member of a select committee assembled to develop the Heterogeneous Integration Roadmap which serves as “a guideline for the global electronics industry of projected technology needs and opportunities for innovation.”
Ms. Allyson Hartzell has written a book chapter titled “Deposition of Molecular Contaminants in Gaseous Environments” in Contamination Free Manufacturing for Semiconductors and Other Precision Products.