Micro-Electro-Mechanical-Systems (MEMS) » MEMS

Vestibular Dynamic Inclinometer (VDI)

admin — Wed, 19 Oct 2011 16:24:12 +0000

The Vestibular Dynamic Inclinometer (VDI) is a sensor motivated bu the human vesitbular system that is made up of two MEMS linear accelerometers and one MEMS gyroscope.

The VDI measures dynamic inclination parameters – inclination, angular velocity, angular acceleration and magnitude of acceleration of the base/surface of contact (gravity).

http://tinyurl.com/visheshresearch

Duration : 0:2:18

Sub-pixel resolving optofluidic microscope for on-chip cell imaging

admin — Wed, 19 Oct 2011 16:23:04 +0000

Sub-pixel resolving, compact (1.5cm x 1.5cm), optofluidic on-chip microscope for on-chip cell imaging.

Developed at the Caltech Biophotonics lab by Guoan Zheng (gazheng@caltech.edu), Seung Ah Lee, Samuel Yang and Changhuei Yang.

Lab on a Chip article:
http://pubs.rsc.org/en/content/articlelanding/2010/lc/c0LC00213E

Duration : 0:1:19

Topology optimization of fluids with the lattice Boltzmann method

admin — Wed, 19 Oct 2011 16:22:09 +0000

Topology Optimization using a GCMMA optimization algorithm and the lattice Boltzmann method to find the optimal material layout for a micro-mixer. Two miscible (Red and blue) fluids enter a channel and should be mixed at the outlet. The evolution of the channel design is displayed on top with green being solid material and white being fluid. The streamlines are overlayed for convenience. The bottom plot shows the mixing profile of the design.
Re=30
Schmidt Number = 4
144×48 mesh

Dave Makhija
University of Colorado at Boulder

Duration : 0:0:26

Two-Mask Rotary Stepper Micromotor Fabricated with SOI Technology

admin — Wed, 19 Oct 2011 16:20:16 +0000

3-phase electrostatic rotary stepper micromotor fabricated with Silicon-On-Insulator technology (two-mask micromachining process)

Duration : 0:0:47

MEMS Based AC voltage Generator other application can be optical wave chopper

admin — Sun, 26 Jun 2011 23:29:41 +0000

This design is directly inspired by the ABB German Corporate Research Centre’s: MIROS MEMS Based Paramagnetic oxygen sensor. Kindly search for Dr.Peter Krippner, Dr. Armin Gasch @ ABB DE CRC. They have created a kind of a design which can be used for many other purposes. The commercial aspects of this design I am not sure. This design has been already registerd at Indian Patents Organization.

Duration : 0:0:5

MEMS in the Machine

admin — Sun, 26 Jun 2011 23:22:43 +0000

MEMS have many applications and are found in an increasingly large number of products. These are just a few of the areas that integrate MEMS for greater functionality, reliability, and portability.

Duration : 0:1:2

Boston Micromachines 140-actuator poke test: reconstructed surface

admin — Mon, 07 Mar 2011 22:08:51 +0000

This video shows the surface computed from the raw interferograms. The resulting height is in radians of phase at the interferometer’s laser’s wavelength of 633 nm. The purpose of the poke test is to determine the amount of deformation in the surface for a given applied actuator voltage. The actuator displacement force is electrostatic and proportional to the square of the applied voltage. The adjacent actuators pull on each other and make the surface response more complicated than forcing each actuator alone. By measuring the displacement when the neighboring actuators help, allows us to derive a calibrated difference equation for the DM In an AO system, you measure the wavefront error and then dial-in the correction for the DM. This measurement allows us to figure out how to do that..

Duration : 0:0:42

Pacman Meets CFD in Microfluidic device

admin — Wed, 12 Jan 2011 08:35:55 +0000

This pacman-like animation demonstrates a conceptual microfluidic device in which fluid is
flowing through a series of interconnected channels. When the fluid reaches a
corner in the channel it experiences an impulsive force which drives it out of
the corner. The fluid is wetting relative to the channel surface so surface tension
pulls the droplet down against the surface. Viscosity damps the motion until
a droplet reaches another corner where it is accelerated again.
Courtesy Terrabyte.

Duration : 0:0:41

Micro Electro Mechanical Systems

admin — Sat, 08 May 2010 08:43:00 +0000

Film project for ELEC457

Duration : 0:4:27

Vision-based Microassembly of 3D Solid and Complex MEMS

admin — Fri, 07 May 2010 02:54:48 +0000

The video shows an automatic assembly of fives silicon microparts of 400 µm x 400 µm x 100 µm on 3-levels. Each microassembly subtask is performed using a pose-based visual control which uses a CAD model-based tracker. The assembly clearance is estimated to 3 µm that allows to obtain solid and complex micro electromechanical structures without any external joining (glue, wending). For more informations, please go to http://www.femto-st.fr/

Duration : 0:1:12