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- Publications
- Influence
Using megasonic development of SU-8 to yield ultra-high aspect ratio microstructures with UV lithography
- J. Williams, W. Wang
- Materials Science
- 1 December 2004
SU-8 resist is commonly used to produce high aspect ratio microstructures in MEMS field. The resist is patterned using either ultraviolet (UV) or X-ray lithography and developed to produce structures… Expand
Modelling carbon dioxide storage within closed structures in the UK Bunter Sandstone Formation
- J. Williams, M. Jin, M. Bentham, G. Pickup, S. Hannis, E. Mackay
- Geology
- 1 October 2013
The Bunter Sandstone Formation in the UK Southern North Sea has the potential to become an important CO2 storage unit if carbon dioxide capture and storage becomes a widely deployed option for the… Expand
Microfabrication of an electromagnetic power relay using SU-8 based UV-LIGA technology
- J. Williams, W. Wang
- Materials Science
- 1 December 2004
Most of the MEMS relays reported in the field now are based on silicon fabrication and cannot be used for power applications. In this paper, we report a research effort to microfabricate an… Expand
Numerical simulation and test of a UV-LIGA-fabricated electromagnetic micro-relay for power applications
- J. Williams, R. Yang, W. Wang
- Engineering
- 29 April 2005
Abstract The research work presented in this paper focused on the modeling, simulation, and test of the dynamic performances of a UV-LIGA-fabricated electromagnetic power relay. The relay consists of… Expand
Plasma treatment as a method for functionalising and improving dispersion of carbon nanotubes in epoxy resins
- J. Williams, W. R. Broughton, T. Koukoulas, S. Rahatekar
- Materials Science
- Journal of Materials Science
- 1 February 2013
This study reports on the results of plasma-treated carbon nanotubes (CNTs) in the presence of oxygen and ammonia which can be scaled up for relatively large quantities of nanomaterials. The plasma… Expand
Hollow Cathode With Low Work Function Electride Insert
- L. Rand, Ryne M. Waggoner, J. Williams
- Materials Science
- 2011
Hollow cathodes are critical devices in the successful operation of electric propulsion thrusters. Cathodes featuring C12A7:electride as an ultra-low work function thermionic emitter are hypothesized… Expand
Erosion rate diagnostics in ion thrusters using laser-induced fluorescence
- C. Gaeta, J. Matossian, R. Turley, J. Beattie, J. Williams, W. Williamson
- Materials Science
- 1 June 1993
We have used laser-induced fluorescence (LIF) to monitor the charge-exchange ion erosion of the molybdenum accelerator electrode in ion thrusters. This real-time, nonintrusive method was implemented… Expand
Ground-based tests of hollow cathode plasma contactors
- J. Williams, P. Wilbur
- Chemistry
- 1989
Experimental results are presented which describe operation of and the plasma environment associated with a hollow cathode-based plasma contactor collecting electrons from an ambient, low density… Expand
Bells against palsy.
- J. Williams, R. Lehman
- Medicine
- The American journal of otology
- 1988
A technique is described in which "jingle bells" are sutured in three positions on the face at the points of maximum excursion of the facial musculature when stimulated by a Hilger nerve stimulator… Expand
Characterization of calcium fenoprofen 2. Dissolution from formulated tablets and compressed rotating discs
- B. Hendriksen, J. Williams
- Materials Science
- 15 March 1991
Abstract Calcium fenoprofen samples previously studied in powder form have been made into formulated tablets and into pure compressed discs. The wide variation in dissolution rate noted for powders… Expand