Publications
384 results found
Pillatsch P, Yeatman EM, Holmes AS, 2012, A Scalable Piezoelectric Impulse-Excited Generator For Random Low Frequency Excitation, IEEE MEMS
Mukherjee AG, Mitcheson PD, Wright SW, et al., 2012, Magnetic Potential Well Tuning of Resonant Frequency Cantilever Energy Harvesters, PowerMEMS 2012
Kaphengst NF, Toh TT, Mitcheson PD, et al., 2012, Adaptive Load Synthesis for Autonomous Resonant Frequency Tuning of Electromagnetic Energy Harvesters, PowerMEMS 2012
Kiziroglou ME, Wright SW, Toh TT, et al., 2012, Heat Storage Power Supply for Wireless Aircraft Sensors, Pages: 472-475
Kiziroglou ME, Yeatman EM, 2012, 17 - Materials and techniques for energy harvesting, Functional Materials for Sustainable Energy Applications, Editors: Kilner, Skinner, Irvine, Edwards, Publisher: Woodhead Publishing, Pages: 541-572, ISBN: 978-0-85709-059-1
Abstract: Energy harvesting, the collection of small amounts of ambient energy to power wireless devices, is a very promising technology for applications where batteries are impractical, such as body sensor networks and inaccessible remote systems. The performance and potential of energy-harvesting devices depend strongly on the performance and specific properties of materials. In this chapter the important properties and potential of materials used in energy-harvesting devices are reviewed. An introduction to the concept of energy harvesting is given with a special discussion on motion energy-harvesting limits. The state of the art of materials for piezoelectric, electrostatic, thermoelectric and electromagnetic harvesting devices is discussed, with emphasis on desired material properties and corresponding available materials. In addition to the materials required in the energy transduction mechanism itself, the performance of mechanical oscillators at small scales is a critical factor in motion energy harvesting. For this reason, material requirements, performance and limitations for the implementation of low-frequency and broadband mechanical oscillators are reviewed in the final section of this chapter.
Willerton M, Banavar M, Zhang X, et al., 2012, Sequential Wireless Sensor Network Discovery Using Wide Aperture Array Signal Processing, EUSIPCO 2012
In this paper, a novel wireless sensor network discovery algorithm is presented which estimates the position of a large number of low powered, randomly distributed sensor nodes. Initially, all nodes are at unknown locations except for a smallnumber which are termed the “anchor” nodes. The remaining nodes are to be located as part of the discovery procedure. As the locations of sensor nodes are estimated, they can be used in the localization of other nodes. Transmitting nodes in unknown locations are localized in a decentralized manner by using a set of receiving sensor nodes at known or estimated locations within its coverage area. This set of nodes forms an array which is used for localization. Initially a coarse localisation of all nodes is performed to identify their approximate positions. A fine grained localization procedure then follows for refinement. This paper will focus on the coarse localizationapproach. Simulations demonstrate the effectiveness of the proposed method.
Yeatman EM, O'Hare D, Dobson C, et al., 2011, Approaches to self-powered biochemical sensors for in-vivo applications
The requirement for electrical power is a major limitation in the development of biosensors for in-body applications. This paper considers motion powered energy harvesting devices for in-body use, showing that power levels are unlikely to exceed a few microwatts for devices of acceptable size. As a low power sensor, we are developing pH detectors based on metal-metal oxide electrodes, such as iridium oxide. The power requirement of these devices is considered, including signal conditioning, storage and transmission. A hybrid powering scheme of energy harvesting and wireless power delivery for data transmission is proposed.
Le CP, Halvorsen E, Sorasen O, et al., 2011, An Electrostatic Energy Harvester with Power-Extracting End Stops Driven by Wideband Vibrations, PowerMEMS 2011, Pages: 122-125
Dicken J, Mitcheson PD, Elliott A, et al., 2011, Single-Supply Pre-Biasing Circuit for Low-Amplitude Energy Harvesting Applications, PowerMEMS 2011, Pages: 46-49
Dicken J, Mitcheson PD, Elliott A, et al., 2011, Single-Supply Pre-Biasing Circuit for Low-Amplitude Energy Harvesting Applications, PowerMEMS 2011, Pages: 46-49
Mukherjee AG, Mitcheson PD, Wright SW, et al., 2011, Tuning Resonant Energy Harvesters Using a Variable Reluctance Link, PowerMEMS 2011, Pages: 11-14
Pillatsch P, Yeatman EM, Holmes AS, 2011, Piezoelectric Impulse-Excited Generator for Low Frequency Non-Harmonic Vibrations, PowerMEMS 2011, Pages: 245-248
Denisov A, Yeatman EM, 2011, Stepwise Microactuators Powered by Ultrasonic Transfer, Eurosensors XXV
Dou G, Holmes AS, Yeatman EM, et al., 2011, Transfer of functional ceramic thin films using a thermal release process., Adv Mater, Vol: 23, Pages: 1252-1256, ISSN: 1521-4095
Bansal A, Hergert R, Dou G, et al., 2011, Laser transfer of sol-gel ferroelectric thin films using an ITO release layer, MICROELECTRONIC ENGINEERING, Vol: 88, Pages: 145-149, ISSN: 0167-9317
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- Citations: 7
Kiziroglou ME, Samson D, Becker T, et al., 2011, Optimization Of Heat Flow for Phase Change Thermoelectric Harvesters, Seoul, Korea, PowerMEMS, Pages: 454-457
He C, Kiziroglou ME, Yates DC, et al., 2011, A MEMS self-powered sensor and RF transmission platform for WSN nodes, Sensors Journal, IEEE, Vol: 11, Pages: 3437-3445, ISSN: 1530-437X
Toh TT, Mitcheson PD, Yeatman EM, 2010, Control models of Switch Mode Maximum Power Point Tracking Interfaces for Energy Harvesting Devices, PowerMEMS 2010, Pages: 155-158
Denisov A, Yeatman E, 2010, Ultrasonic vs. inductive power delivery for miniature biomedical implants, Pages: 84-89
In this paper we compare two methods of wireless power delivery to implanted microdevices: ultrasonically and via inductive coupling. We build models for both methods and compare them in terms of power transmission efficiency, for different separations and receiver sizes. The simulation results show that at small distances between source and receiver (1 cm) the inductive system outperforms the ultrasonic one (efficiency of 81% vs. 39% for a receiver of 10 mm diameter). At larger distances (10 cm) the efficiencies of both systems reduce significantly, but the ultrasonic system demonstrates much better performance (0.2% vs. 0.013% for a 10 mm receiver). As the receiver gets smaller this gap increases drastically (0.02% vs. 0.02-10-3% for a 2 mm receiver) while the distance after which the ultrasonic system outperforms the inductive one reduces (from 2.9 cm for a 10 mm receiver to 1.5 cm for a 5 mm receiver). ©2010 IEEE.
Pu SH, Holmes AS, Yeatman EM, et al., 2010, Stable zipping RF MEMS varactors, JOURNAL OF MICROMECHANICS AND MICROENGINEERING, Vol: 20, ISSN: 0960-1317
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- Citations: 13
Kiziroglou ME, He C, Yeatman EM, 2010, Flexible substrate electrostatic energy harvester, Electronics Letters, Vol: 46, Pages: 166-167, ISSN: 1350-911X
Dou G, Wright R, Holmes A, et al., 2010, Solder Transfer of Lead Zirconate Titanate (PZT) Thin Films, 11th International Conference on Electronic Packaging Technology and High Density Packaging (ICEPT-HDP), Publisher: IEEE, Pages: 108-111
Yeatman E, 2010, Sensor power sources, SENSOR REVIEW, Vol: 30, Pages: 181-181, ISSN: 0260-2288
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
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
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
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
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