Publications
390 results found
He C, Kiziroglou ME, Yates DC, et al., 2010, MEMS energy harvester for wireless biosensors, Pages: 172-175
Kiziroglou ME, Mukherjee AG, Vatti S, et al., 2010, Self-assembly of three-dimensional Au inductors on silicon, IET microwaves, antennas & propagation, Vol: 4, Pages: 1698-1703, ISSN: 1751-8733
Lan H-C, Wu M-L, Yeatman EM, 2009, Non-mechanical sub-pixel image shifter for acquiring super-resolution digital images, OPTICS EXPRESS, Vol: 17, Pages: 22992-23002, ISSN: 1094-4087
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- Citations: 2
Thorner LDA, Mitcheson PD, Holmes AS, et al., 2009, Scaling Laws for Energy Harvesters in a Marine Environment, PowerMEMS 09, Pages: 249-252, ISSN: 2151-3155
Toh TT, Mitcheson PD, Yeatman EM, 2009, Wireless Sensor Node Using a Rotational Energy Harvester with Adaptive Power Conversion, PowerMEMS 2009, Pages: 273-276, ISSN: 2151-3155
He C, Arora A, Kiziroglou ME, et al., 2009, MEMS energy harvesting powered wireless biometric sensor, Pages: 207-212
One of the main challenges in developing wireless biometric sensors is the requirement for integration of various systems into a very compact device. Such systems include sensing units, conditioning electronics, transmitters and power supplies. In this work, a novel system integration architecture is presented. A unique feature of this new architecture is that the sub-systems are selected and designed for direct output-to-input connection. An array of active pH sensors is used to transform a pH level to an electrical potential in the range of 0-2 Volts. This signal is amplified by an electrostatic energy harvester suitable for human motion operation. The amplified signal drives a custom LC transmitter specially designed to suit the harvester output. A system of notable simplicity is achieved and may serve as a demonstrator for other wireless sensors. © 2009 IEEE.
Wright PK, Yeatman EM, 2009, Proceedings - 2009 6th International Workshop on Wearable and Implantable Body Sensor Networks, BSN 2009: Message from the workshop co-chairs, Proceedings - 2009 6th International Workshop on Wearable and Implantable Body Sensor Networks, BSN 2009
Yeatman EM, 2009, Energy harvesting - small scale energy production from ambient sources, Conference on Active and Passive Smart Structures and Integrated Systems, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 1
Baker C, Schwab M-A, Moseley R, et al., 2009, Monolithic MEMS vacuum valves for miniature chemical pre-concentrators, 15th Int. Conf. on Solid State Sensors and Actuators (Transducers 09)
Kiziroglou ME, He C, Yeatman EM, 2009, Rolling Rod Electrostatic Microgenerator, IEEE Transactions on Industrial Electronics, Vol: 56, Pages: 1101-1108, ISSN: 0278-0046
The difficulty of maximizing the proof mass, and lack of broadband operation, are key issues for miniaturized energy-harvesting devices. Here, a novel electrostatic energy harvester is presented, employing an external free-rolling proof mass to address these issues. A description of the operating principle is given, and the kinetic dynamics of the cylinder are analyzed. The electrostatics of the system are simulated, identifying the device performance for different dielectric dimensions and surface specifications. The fabrication of a prototype device is presented, and physical characterization results demonstrate a successful fabrication technique for dielectric sizes down to 100 nm. Capacitance measurements reveal a capacitance ratio of 4 and are in agreement with simulation results. A voltage gain of 2.4 is demonstrated. The device is suitable for energy harvesting from low-frequency high-amplitude ambient motion sources such as the human body.
He C, Arora A, Kiziroglou ME, et al., 2009, MEMS Energy Harvesting Powered Wireless Biometric Sensor, Wearable and Implantable Body Sensor Networks, 2009. BSN 2009. Sixth International Workshop on, Pages: 207-212
One of the main challenges in developing wireless biometric sensors is the requirement for integration of various systems into a very compact device. Such systems include sensing units, conditioning electronics, transmitters and power supplies. In this work, a novel system integration architecture is presented. A unique feature of this new architecture is that the sub-systems are selected and designed for direct output-to-input connection. An array of active pH sensors is used to transform a pH level to an electrical potential in the range of 0 - 2 Volts. This signal is amplified by an electrostatic energy harvester suitable for human motion operation. The amplified signal drives a custom LC transmitter specially designed to suit the harvester output. A system of notable simplicity is achieved and may serve as a demonstrator for other wireless sensors.
Mukherjee AG, Vatti S, Kiziroglou ME, et al., 2009, Integration of self-assembled inductors with CMOS LC oscillators, Microwave Conference, 2009. EuMC 2009. European, Pages: 1876-1879
The quality factor (Q) of integrated inductors is of great importance to radio frequency applications. Monolithic integration of out-of-plane Au inductors with Complementary Metal-Oxide-Semiconductor (CMOS) LC oscillators is reported in this paper. The recently developed self-assembly process involves in-plane fabrication of Au inductors and subsequent rotation of the structure by surface tension forces of a melting Sn hinge. The CMOS compatibility of this process is demonstrated through the integration of an LC oscillator with the self-assembled inductor using post-CMOS processing. At a 1.48 GHz oscillation frequency, a phase noise of -95 dBc/Hz is reported at a 100 kHz frequency offset. Obtained results show this technique to be promising for the integration of high Q inductors with commercial RF systems.
Dicken J, Mitcheson PD, Stoianov I, et al., 2009, Increased Power Output from Piezoelectric Energy Harvesters by Pre-Biasing, PowerMEMS 2009, Pages: 75-78, ISSN: 2151-3155
This paper presents, for the first time, experimental results demonstrating a new approach to increasing the power output of piezoelectric energy harvesters by applying a bias charge at the beginning of each half cycle of motion. Ultimate power limits of inertial energy harvesters depend only on the device size and nature of the excitation, rather than on the transduction mechanism. However, practical devices generally perform well below the theoretical limit, often because a sufficiently high transducer damping force cannot be achieved. For suchcases, we show that the generator effectiveness is improved by a pre-biasing technique, and present simulationresults with experimental verification. These results show that the effectiveness of the piezoelectric generator isimproved by more than 10 times compared to an optimised purely resistive load. In practice our gains were limited by the voltage breakdown of the components used.
Mukherjee AG, Vatti S, Kiziroglou ME, et al., 2009, Integration of self-assembled inductors with CMOS LC oscillators, Microwave Integrated Circuits Conference, 2009. EuMIC 2009. European, Publisher: IEEE, Pages: 523-526
Mitcheson PD, Yeatman EM, Rao GK, et al., 2008, Energy Harvesting From Human and Machine Motion for Wireless Electronic Devices, Proceedings of the IEEE, Vol: 96, Pages: 1457-1486
Toh TT, Mitcheson PD, Holmes AS, et al., 2008, A continuously rotating energy harvester with maximum power point tracking, Journal of Micromechanics and Microengineering, Vol: 18
Yeatman EM, 2008, Energy Harvesting from Motion Using Rotating and Gyroscopic Proof Masses, J. Mech. Eng. Sci., Vol: 222, Pages: 27-36
Mukherjee AG, Kiziroglou ME, Holmes AS, et al., 2008, Die-level integration of metal MEMS with CMOS, Electronics System-Integration Technology Conference, 2008. ESTC 2008. 2nd, Publisher: IEEE, Pages: 169-174
Kiziroglou ME, Mukherjee AG, Moseley RW, et al., 2008, Electrodeposition of Au for self-assembling 3D micro-structures, Conference on Micromachining and Microfabrication Process Technology XIII, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
Toh TT, Mitcheson PD, Yeatman EM, 2008, Continuously Rotating Energy Harvester with Improved Power Density, PowerMEMS 2008, Pages: 221-224
Mukherjee AG, Kiziroglou ME, Holmes AS, et al., 2008, MEMS post-processing of MPW dies using BSOI carrier wafers, Conference on Micromachining and Microfabrication Process Technology XIII, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 2
Kiziroglou ME, He C, Yeatman EM, 2008, Non-resonant electrostatic energy harvesting from a rolling mass, Medical Devices and Biosensors, 2008. ISSS-MDBS 2008. 5th International Summer School and Symposium on, Publisher: IEEE, Pages: 318-321
Mitcheson PD, Sterken T, He C, et al., 2008, Electrostatic microgenerators, Measurement and Control, Vol: 41, Pages: 114-119, ISSN: 0020-2940
Pu SH, Laister A, Holmes A, et al., 2008, High-Q Continuously Tunable Zipping Varactors with Large Tuning Range, 20th Asia Pacific Microwave Conference (APMC 2008), Publisher: IEEE, Pages: 783-+
Kiziroglou ME, He C, Yeatman EM, 2008, Non-Resonant Electrostatic Energy Harvesting from a Rolling Mass, 5th International Summer School and Symposium on Medical Devices and Biosensors, Publisher: IEEE, Pages: 223-226
Yeatman EM, Mitcheson PD, Holmes AS, 2007, Micro-Engineered Devices for Motion Energy Harvesting, 2007 IEEE International Electron Devices Meeting, Pages: 375-378
Yeatman EM, Mitcheson PD, Holmes AS, 2007, Micro-Engineered Devices for Motion Energy Harvesting, 2007 IEEE International Electron Devices Meeting, Pages: 375-378
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