Publications
217 results found
Pu SH, Holmes AS, Yeatman EM, 2007, Design and Simulation of Zipping Variable Capacitors, Pages: 147-150
Pedder J E, Boehlen K, Allott R, et al., 2007, Pulsed laser ablation for volume fabrication of micro-optical arrays on large area substrates
Pedder J E, Holmes A S, 2007, Pulsed laser procesing of shallow micro-optical structures: ablation vs lithography
Sugioka K, Gu B, Holmes A S, 2007, The state of the art and future prospects for laser-direct write for industrial and commercial applications, MRS Bulletin, 32
Lucyszyn S, Pranonsatit S, Choi JY, et al., 2007, Novel RF MEMS Switches, Asia Pacific Microwave Conference, Publisher: IEEE, Pages: 338-+
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- Citations: 2
Pedder JEA, Holmes AS, 2007, Pulsed laser processing of shallow micro-optical structures, Conference on Photon Processing in Microelectronics and Photonics VI, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 1
Toh TT, Yeatman EM, Holmes AS, 2007, Energy Harvesting From Rotating Structures, Pages: 327-330
Pedder JEA, Holmes AS, Allott R, et al., 2007, Pulsed laser ablation for volume micro-optical arrays on large area substrates, Conference on Micromachining Technology For Micro-Optics and Nano-Optics V and Microfabrication Process Technology XII, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 2
Pranonsatit S, Holmes A S, Robertson I D, et al., 2006, Single-pole eight-throw RF MEMS rotary switch, Journal of Microelectromechanical Systems, Vol: 15, Pages: 1735-1744, ISSN: 1057-7157
The design, fabrication, and measured performance of a novel single-pole eight-throw radio-frequency (RF) microelectromechanical systems (MEMS) rotary switch are described. The concept of this rotary switch is based on the adaptation of the axial gap wobble motor. A prototype switch has been made using separately fabricated stator, rotor, and cap components that are then assembled. A rigorous procedure was setup to investigate the direct current (dc) contact resistance over a total of four million rotor contact closures, with half a million closures made on each of the eight stator contacts. It was found that there was no obvious systematic trend in contact resistance over time. An average contact resistance of 2.5 Omega was recorded; however, values as low as 1.0 Omega were also found. The assembled rotary switch demonstrated an excellent RF performance. With the inclusion of feed lines, the insertion loss was 2.65 dB at 20 GHz, after renormalizing the measurement reference impedance. When the loss of the feed lines is subtracted, the worst-case on-state intrinsic insertion loss of the rotary switch is only 2.16 dB at 20 GHz. A worst-case off-state isolation of 31 dB was also measured over the 20-GHz bandwidth. The effective performance figure-of-merit for this switch in an arbitrary position was calculated to be 10.7 THz. To the authors' knowledge, this is the first example of a true single-pole multiple-throw RF MEMS rotary switch.
Miao P, Mitcheson P D, Holmes A S, et al., 2006, Mems Inertial Power Generators For Biomedical Applications, Microsystem Technologies, Vol: 12, Pages: 1079-1083
Miao P, Mitcheson P D, Holmes A S, et al., 2006, Mems Inertial Power Generators For Biomedical Applications, Microsystem Technologies, Vol: 12, Pages: 1079-1083
Pedder JE, Holmes AS, 2006, A study of angular dependence in the ablation rate of polymers by nanosecond pulses, Pages: 286-294
Stark BH, Mitcheson PD, Miao P, et al., 2006, Converter circuit design, semiconductor device selection and analysis of parasitics for micropower electrostatic generators, IEEE TRANSACTIONS ON POWER ELECTRONICS, Vol: 21, Pages: 27-37, ISSN: 0885-8993
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- Citations: 42
Pedder JEA, Holmes AS, 2006, A study of angular dependence in the ablation rate of polymers by nanosecond pulses (Article no.61061B), Photon Processing in Microelectronic and Photonics V, Vol: 6106, Pages: 1-9, ISSN: 0277-786X
Pedder JEA, Holmes AS, 2006, A study of angular dependence in the ablation rate of polymers by nanosecond pulses, Conference on Photon Processing in Microelectronics and Photonics V, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 1
Gao S, Holmes AS, 2006, Thermosonic flip chip interconnection using electroplated copper column arrays, IEEE Transactions on Advanced Packaging, Vol: 29, Pages: 725-734
Cabral J, Holmes AS, 2006, A novel seesaw-type RF MEMS switch, 13th IEEE Mediterranean Electrotechnical Conference (Melecon 2006), 16 - 19 May 2006, Malaga, Spain, Publisher: IEEE, Pages: 288-292
Holmes AS, Pedder JEA, Boehlen KL, 2006, Advanced laser micromachining processes for MEMS and optical applications, Conference on High-Power Laser Ablation VI, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 7
Moseley RW, Yeatman EM, Holmes AS, et al., 2006, Laterally actuated, low voltage, 3-port RF MEMS switch, 19th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2006), 22 - 26 January 2006, Istanbul, Turkey, Publisher: IEEE, Pages: 878-881
Moseley RW, Yeatman EM, Holmes AS, et al., 2006, Laterally actuated, low voltage, 3-port RF MEMS switch, 19th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2006), 22 - 26 January 2006, Istanbul, Turkey, Publisher: IEEE, Pages: 878-881
Holmes AS, Pedder JE, Boehlen K, 2006, Advanced laser micromachining processes for MEMS and optical applications (Article no.62611E), High Power Laser Ablation 2006, 12 - 17 May 2006, Taos, New Mexico, USA, Publisher: SPIE, Pages: 1-9
von Buren T, Mitcheson PD, Green TC, et al., 2006, Optimization of inertial micropower generators for human walking motion, IEEE Sensors Journal, Vol: 6, Pages: 28-38, ISSN: 1530-437X
Pranonsatit S, Hong G, Holmes AS, et al., 2006, Rotary RF MEMS switch based on the wobble motor principle, 19th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2006), 22 - 26 January 2006, Istanbul, TURKEY, Publisher: IEEE, Pages: 886-889
Syms RRA, Holmes AS, 2005, Microengineered optical scanner, US2005167508
Holmes AS, Hong GD, Pullen KR, 2005, Axial-flux permanent magnet machines for micropower generation, JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, Vol: 14, Pages: 54-62, ISSN: 1057-7157
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- Citations: 122
Pedder JEA, Holmes AS, 2005, Excimer laser micromachining of polymers using half-tone masks: mask design and process optimization, 6th international symposium on laser precision microfabrication (LPM2005), Williamsburg VA, USA, 4 - 7 April 2005
Holmes AS, Onischenko AI, George DS, et al., 2005, Modelling of solid-state and excimer laser processes for 3D micromachining, Photonics West LASE 2005, San Jose CA, 22 - 29 January 2005, Publisher: SPIE
Moseley RM, Yeatman EM, Holmes AS, et al., 2005, Silicon low power, low voltage MEMS switches for space communication systems, 5th ESA Round Table on Micro/Nano Technologies for Space. Noordwijk, 3 - 5 October 2005, Pages: 368-375
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
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