Publications
217 results found
Mitcheson PD, Yates DC, Yeatman EM, et al., 2005, Modelling for optimisation of self-powered wireless sensor nodes, 2nd international workshop on wearable and implantable body sensor networks, London, 12 - 13 April 2005, Publisher: IEEE, Pages: 53-57
Geear M, Syms RRA, Wright S, et al., 2005, Monolithic MEMS quadrupole mass spectrometers by deep silicon etching, Journal of Microelectromechanical Systems, Vol: 14, Pages: 1156-1166, ISSN: 1057-7157
Yates DC, Holmes AS, 2005, Loop antenna design for ultra low power transmitters, IWAT 2005: IEEE international workshop on antenna technology: small antennas and novel metamaterials, Singapore, 7 - 9 March 2005, Publisher: IEEE, Pages: 287-290
Yeatman EM, Miao P, Mitcheson PD, et al., 2005, MEMS inertial power generators for biomedical applications, Proceedings symposium on design, test, integration and packaging of MEMS/MOEMS, Montreux, Switzerland, 1 -3 June 2005, Pages: 295-298
Geear MC, Yeatman EM, Holmes AS, et al., 2004, Microengineered electrically resettable circuit breaker, JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, Vol: 13, Pages: 887-894, ISSN: 1057-7157
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- Citations: 12
Hong G, Holmes AS, Heaton ME, 2004, SU8 resist plasma etching and its optimisation, Symposium on Design, Test, Integratives and Packaging of MEMS/MOEMS, Publisher: SPRINGER, Pages: 357-359, ISSN: 0946-7076
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- Citations: 41
Yates DC, Holmes AS, Burdett AJ, 2004, Optimal transmission frequency for ultralow-power short-range radio links, IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, Vol: 51, Pages: 1405-1413, ISSN: 1549-8328
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- Citations: 72
Mitcheson PD, Green TC, Yeatman EM, et al., 2004, Architectures for vibration-driven micropower generators, JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, Vol: 13, Pages: 429-440, ISSN: 1057-7157
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- Citations: 522
George DS, Onischenko A, Holmes AS, 2004, On the angular dependence of focused laser ablation by nanosecond pulses in solgel and polymer materials, APPLIED PHYSICS LETTERS, Vol: 84, Pages: 1680-1682, ISSN: 0003-6951
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- Citations: 7
Holmes AS, 2004, Excimer laser micromachining with half-tone masks for the fabrication of 3-D microstructures, IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY, Vol: 151, Pages: 85-92, ISSN: 1350-2344
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- Citations: 23
Miao P, Holmes AS, Yeatman EM, et al., 2004, Micro-machined variable capacitors for power generation, Bristol, 11th international conference on electrostatics, Heriot Watt Univ, Edinburgh, Scotland, 23 - 27 March 2003, Publisher: Iop Publishing Ltd, Pages: 53-58
Pang AJ, Desmulliez MPY, Leonard M, et al., 2004, Design, manufacture and testing of a low-cost micro-channel cooling device, New York, 6th electronics packaging technology conference, Singapore, 8 - 10 December 2004, Publisher: IEEE, Pages: 564-568
Stark BH, Mitcheson PD, Miao P, et al., 2004, Power processing issues for micro-power electrostatic generators, New York, 35th annual IEEE power electronics specialists conference (PESC 04), Aachen, Germany, 20 - 25 June 2004, Publisher: IEEE, Pages: 4156-4162
For various monitoring and sensing applications it is desirable to power the electronics by scavenging energy from any locally available source. A prototype generator for low frequency (human body) motion has been developed using a micro-machined (MEMS) implementation of an inertial generator based on a moving-plate capacitor. The prototype generates pulses of 300 V on a 10 pF capacitor. This paper examines the design of a circuit and mosfet device to convert this energy to a low voltage. Because of the very small charge involved, the effect of leakage and parasitic stored charge are important. A silicon-on-insulator design is proposed and is examined through physics based finite-element simulation. The overall effectiveness of the generation process is shown to be composed of several terms which are functions of system parameters such as. generator flight time, device area and circuit inductance. It is shown that device area is a compromise between leakage current, charge storage and on-state voltage. It can, for a given generator and inductance, be optimised to provide the maximum energy yield.
Yeatman EM, Geear M, Holmes AS, et al., 2004, Performance and analysis of thermally tripped MEMS circuit breakers, MicroMechanics Europe 2004, Leuven, Belgium, 5 - 7 September 2004, Pages: 295-298
Onischenko AI, George DS, Holmes AS, et al., 2004, Efficient pocketing simulation model for solid state laser micromachining and its application to a sol-gel material, Bellingham, Conference on photon processing in microelectronics and photonics III, San Jose, CA, 26 - 29 January 2004, Publisher: Spie-Int Society Optical Engineering, Pages: 134-143
Gao SB, Holmes AS, 2004, Surface enhanced Raman spectroscopy for non-destructive analysis of surfaces following excimer laser removal of polyimide, New York, 15th annual IEEE/SEMI advanced semiconductor manufacturing conference and workshop (ASMC 2004), Boston, MA, 4 - 6 May 2004, Publisher: IEEE, Pages: 487-491
Holmes AS, Hong G, Pullen KR, et al., 2004, Axial-flow microturbine with electromagnetic generator: design, CFD simulation, and prototype demonstration, New York, 17th IEEE international conference on micro electro mechanical systems, Maastricht, Netherlands, 25 - 29 Jnuary 2004, Publisher: IEEE, Pages: 568-571
Mitcheson PD, Miao P, Stark BH, et al., 2004, MEMS electrostatic micropower generator for low frequency operation, Publisher: Elsevier, Pages: 523-529, ISSN: 0924-4247
This paper describes the analysis, simulation and testing of a microengineered motion-driven power generator, suitable for application in sensors within or worn on the human body. Micro-generators capable of powering sensors have previously been reported, but these have required high frequency mechanical vibrations to excite a resonant structure. However, body-driven movements are slow and irregular, with large displacements, and hence do not effectively couple energy into such generators. The device presented here uses an alternative, non-resonant operating mode. Analysis of this generator shows its potential for the application considered, and shows the possibility to optimise the design for particular conditions. An experimental prototype based on a variable parallel-plate capacitor operating in constant charge mode is described which confirms the analysis and simulation models. This prototype, when precharged to 30 V, develops an output voltage of 250 V, corresponding to 0.3 μJ per cycle. The experimental test procedure and the instrumentation are also described.
Pang AJ, Desmulliez MPY, Leonard M, et al., 2004, Modelling, manufacture and test of a microchannel cooling plate for microelectronics packaging, EMAP 2004, 6th international conference on electronic materials and packaging, Penang, Malaysia, 5 - 7 December 2004, Pages: 140-146
Yates DC, Holmes AS, Burdett AJ, 2004, Optimal transmission frequency for ultra-low power short-range medical telemetry, International workshop on wearable and implantable body sensor networks, London, UK, 6 - 7 April 2004
Miao P, Mitcheson PD, Stark BH, et al., 2004, Fabrication and characterisation of a motion-driven MEMS electrostatic power generator, IOP meeting on "Electrostatics and MEMS", London, 21 April 2004
Mitcheson PD, Stark BH, Miao P, et al., 2003, Analysis and optimisation of MEMS electrostatic on-chip power supply for self-powering of slow-moving sensors, Guimaraes, Eurosensors 03, 17th European conference on sensors and actuators, University of Minho Guimaraes, Portugal, 21 - 24 September 2003, Publisher: University of Minho, Pages: 48-51
Holmes AS, Heaton ME, Hong GD, et al., 2003, Laser profiling of 3-D microturbine blades, Bellingham, 4th international symposium on laser precision microfabrication, Munich, Germany, 21 - 24 June 2003, Publisher: Spie-Int Society Optical Engineering, Pages: 152-156
Holmes AS, Heaton ME, Hong GD, et al., 2003, Laser profiling of 3-D microturbine blades, Bellingham, 4th international symposium on laser precision microfabrication, Munich, Germany, 21 - 24 June 2003, Publisher: Spie-Int Society Optical Engineering, Pages: 152-156
Bohlen IS, Fieret J, Holmes A, et al., 2003, CAD/CAM software for an industrial laser manufacturing tool, Bellingham, Conference on photon processing in microelectronics and photonics II, San Jose, California, 27 - 30 January 2003, Publisher: Spie-Int Society Optical Engineering, Pages: 198-206
Hong GD, Holmes AS, Heaton ME, 2003, Su8 resist plasma etching and its optimisation, New York, Symposium on design, test, integratives and packaging of MEMS/MOEMS, Cannes, France, 5 - 7 May 2003, Publisher: IEEE, Pages: 268-271
Hong G, Holmes AS, Heaton ME, et al., 2003, Design, fabrication and characterization of an axial-flow turbine for flow sensing, New York, Solid-state sensors, actuators and microsystems; transducers, 2003, Publisher: IEEE, Pages: 702-705
Yates D, Holmes AS, Burdett AJ, 2002, Transmission frequency optimization for ultra-low power short range wireless communications, UBiCOMP 2002, Goeteborg, Sweden, 29 Sept - 1 Oct 2002
Holmes AS, 2002, Laser processes for MEMS manufacture, Bellingham, 2nd international symposium on laser precision microfabrication, Singapore, 16 - 18 May 2001, Publisher: Spie-Int Society Optical Engineering, Pages: 203-209
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