3-dimensional electrode patterning within a microfluidic channel using metal ion implantation (2010)
Choi, J.W., Rosset, S., Niklaus, M., Adleman, J., Shea, H., Psaltis, D.
The application of electrical fields within a microfluidic channel enables many forms of manipulation necessary for lab-on-a-chip devices. Patterning electrodes inside the microfluidic channel...
SPACE: the spectroscopic all-sky cosmic explorer (2009)
Cimatti, A., Robberto, M., Baugh, C., Beckwith, S. V. W., Content, R., Daddi, E., ...
We describe the scientific motivations, the mission concept and the instrumentation of SPACE, a class-M mission proposed for concept study at the first call of the ESA Cosmic-Vision 2015–2025...
Ion-implanted compliant electrodes for mm-size dielectric elastomer actuators (2009)
Rosset, S, Niklaus, M, Dubois, P, Shea, H, Bar-Cohen, Y, Wallmersperger, T
The miniaturization of dielectric elastomer actuators requires compliant electrodes that are clean, reliable, and that can be easily patterned on a mm or μm scale. Carbon-based electrodes, which are...
Radiation sensitivity of microelectromechanical system devices (2009)
Abstract. The sensitivity of microelectromechanical system (MEMS) devices to radiation is reviewed, with an emphasis on radiation levels representative of space missions rather than of operation in...
An experimental study of the dc breakdown voltage for planar MEMS interdigitated aluminum electrodes with gaps ranging from 10 to 500 micron is presented. Unlike most research on the breakdown in...
A gamma, x-ray and high energy proton radiation-tolerant CIS for space applications (2009)
Carrara, L., Niclass, C., Scheidegger, N., Shea, H., Charbon, E.
Photon counting is useful in space-based imagers wherever quantitative light- intensity evaluation is necessary. Various types of radiation, from cosmic rays to high-energy proton beams to gamma...
Fabrication and Testing of a MEMS Based Earth Sensor (2009)
We present a novel MEMS inertial sensor that directly measures the gravity gradient in order to sense the relative orientation of a satellite with respect to the Earth. An Earths ensor provides an...
Microfabricated out-of-plane arrays of integrated capillary nano-electrospray emitters (2009)
This paper presents the fabrication and operation of an integrated nano-electrospray thruster consisting of an array of microfabricated silicon capillary emitters and microfabricated silicon...
Microfabricated out-of-plane arrays of integrated capillary nano-electrospray emitters (2009)
We present the fabrication and operation of an integrated nano-electrospray thruster consisting of an array of microfabricated silicon capillary emitters and microfabricated silicon extractor...
Performance of a micro-fabricated Colloid thruster system (2009)
Smith, K, Stark, J, Krpoun, R, Shea, H
In order to fully characterize the performance of the colloid thruster system the electrospray (ES) beam must itself be fully characterized. This may be achieved by measuring various properties such...
Bodendorfer, M, Altwegg, K, Wurz, P, Shea, H
We present the combination of the numerical 3D magnetic field simulation of SWISSCASE, the new 10 GHz ECR ion source at the University of Bern in Switzerland, and the experimental X-ray...
Large stroke miniaturized dielectric elastomer actuators (2009)
Rosset, S, Dubois, P, Niklaus, M, Shea, H
We report on miniaturized diaphragm dielectric elastomer actuators (DEAs) capable of vertical displacement up to 25% of their diameter. Low-energy metal ion implantation was used to create...
Niklaus, M, Rosset, S, Dubois, P, Shea, H
This study contrasts the implantation of 25 μm thick Polydimethylsiloxane (PDMS) membranes with titanium and gold ions at 10 keV and 35 keV for doses from 1x10^15 at/cm2 to 2.5x10^16 at/cm2...
Large-Stroke Dielectric Elastomer Actuators With Ion- Implanted Electrodes (2009)
Rosset, S, Niklaus, M, Dubois, P, Shea, H
In this paper, we present miniaturized polydimethyl- siloxane (PDMS)-based diaphragm dielectric elastomer actuators capable of out-of-plane displacement up to 25% of their diameter. This very large...
De Rooij, N.F., Gautsch, S., Briand, D., Marxer, C., Mileti, G., Noell, W., ...
Future space exploration will emphasize on cost effectiveness and highly focused mission objectives. Missions costs are directly proportional to its total weight, thus, the trend will be to replace...
A micromachined earth sensor based on measuring the gravity gradient torque (2009)
We present the fabrication and testing of a novel MEMS inertial sensor that directly measures the gravity gradient in low Earth orbit in order to sense the relative orientation of a satellite with...
SPACE: the spectroscopic all-sky cosmic explorer (2009)
Cimatti, A, Robberto, M, Et Al., 97 Authors, Shea, H, Et Al., 21 Authors
We describe the scientific motivations, the mission concept and the instrumentation of SPACE, a class-M mission proposed for concept study at the first call of the ESA Cosmic-Vision 2015–2025...
SPACE: the Spectroscopic All-sky Cosmic Explorer (2009)
Cimatti, A., Robberto, M., Baugh, C., Beckwith, S. V. W., Content, R., Daddi, E., ...
238 x 238 Micromechanical optical cross connect (2003)
Aksyuk, V.A., Arney, S., Basavanhally, N.R., Bishop, D.J., Bolle, C.A., Chang, C.C., ...
This letter describes a 238x238 beam-steering optical cross connect constructed using surface micromachined mirrors. Its innovative optical configuration resulted in superior optical performance,...
Beam-steering micromirrors for large optical cross-connects (2003)
Aksyuk, V.A., Pardo, F., Carr, D., Greywall, D., Chan, H.B., Simon, M.E., ...
This paper describes Si-micromachined two-axis beam- steering micromirrors and their performance in 256 x 256- and 1024 x 1024-port large optical cross-connects (OXCs). The high-reflectivity...
A Variable Dynamic Range Single-Photon Imager Designed for Multi-Radiation Tolerance
Carrara, L., Fishburn, M., Niclass, C., Scheidegger, N., Shea, H., Charbon, E.
A Study of the Effects of Gamma Radiation on CMOS Single- Photon Avalanche Diodes
Gersbach, M., Niclass, C., Carrara, L., Sergio, M., Scheidegger, N., Shea, H., ...
Voltage tuning of the resonance frequency of electroactive polymer membranes over a range of 75%
Dubois, P., Rosset, S., Niklaus, M., Shea, H., Schmid, U, Cané, C, ...
We report on a novel technique to control the resonance frequency of polymer membranes, without additional external actuators. An electrostatic force is used to apply compressive stress to a...