Tufts University – TechConnect Briefs

Mobility of paramagnetic nanoparticles in porous media

Abriola LM., Bagaria H., Johnson K., Pennell KD., Wang Y., Zhang X., Tufts University, US

Stable paramagnetic nanoparticles were prepared and their mobility in reservoir matrix was measured as a function of particle mass loading, rate of sulfonate fraction in coating polymer, and the presence of surfactant.

Mobility of paramagnetic nanoparticles in porous media

Abriola LM., Bagaria H., Johnson K., Pennell KD., Wang Y., Zhang X., Tufts University, US

Stable paramagnetic nanoparticles were prepared and their mobility in reservoir matrix was measured as a function of particle mass loading, rate of sulfonate fraction in coating polymer, and the presence of surfactant.

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Doody C.B., Lemmerhirt D.F., Wadhwa J.S., White R.D., Tufts University, US

The goal of this project was the experimental characterization and modeling of capacitive micromachined ultrasound transducers (cMUTs). The cMUTs being tested are fabricated using layers common to standard commercial CMOS processes. Two designs of micromachined [...]

Shape Memory Alloy and Elastomer Composite MEMS Actuators

Fallon P.D., Gerratt A.P., Kierstead B.P., White R.D., Tufts University, US

Shape memory alloy (SMA) microactuators are under development for use in soft bodied robotics. These actuators take advantage of the shape memory effect of nickel-titanium alloys (nitinol) to deliver high force and large strain in [...]

Micromachined Force Sensors for Characterization of Chemical Mechanical Polishing

Anjur S., Gauthier D., Manno V., Moinpour M., Mueller A., Rogers C., White R., Tufts University, US

Two types of microscale sensors are being developed to take in situ measurements of forces induced during chemical mechanical polishing. Flexible post sensors have been demonstrated, and floating element sensors are under development. Both sensors [...]

MEMS Pressure Sensor Array for Aeroacoustic Analysis of the Turbulent Boundary Layer on an Airplane Fuselage

De Jong R., Gallman J.M., Krause J.S., Moeller M.J., White R.D., Tufts University, US

This paper describes a front venting MEMS pressure sensing array, fabricated through the MEMSCAP PolyMUMPS process. The microphone array will be used to analyze the turbulent boundary layer (TBL) of an airplane fuselage in wind [...]