1,724,218 research outputs found
An improved thick-film piezoelectric material by powder blending and enhanced processing parameters
No full textThis paper details improvements of the d33 coefficient for thick-film lead zirconate titanate (PZT) layers. In particular, the effect of blending ball and attritor milled powders has been investigated. Mathematical modeling of the film structure has produced initial experimental values for powder combination percentages. A range of paste formulations between 8:1 and 2:1 ball to attritor milled PZT powders by weight have been mixed into a screen-printable paste. Each paste contains 10% by weight of lead borosilicate glass and an appropriate quantity of solvent to formulate a screen printable thixotropic paste. A d33 of 63.5 pC/N was obtained with a combination of 4:1 ball milled to attritor milled powder by weight. The improved paste combines the high d33 values of ball and the consistency of attritor milled powder. The measured d33 coefficient was further improved to 131 pC/N by increasing the furnace firing pro-file to 100
Harold Washington Library Center
No full textDetail of building base; Primary architect, Thomas Beeby of Hammond, Beeby & Babka. A. Epstein & Sons International, associate architects. Hammond, Beeby & Babka won a much-publicized and controversial commission to design the largest library building in the country, and spent $195 million to carry out this missive. It is approximately 756,000 square foot. Source: Galinsky [website]; http://www.galinsky.com/ (accessed 12/3/2007
Performance of a micro-engineered ultrasonic particle manipulator
No full textAn ultrasonic microfluidic particle manipulator has been modeled and its experimentally measured separation performance has been compared with the modeled results for 1 µm latex particles, and yeast particles in water
A miniature coupled bistable vibration energy harvester
Full text linkThis paper reports the design and test of a miniature coupled bistable vibration energy harvester. Operation of a bistable structure largely depends on vibration amplitude rather than frequency, which makes it very promising for wideband vibration energy harvesting applications. A coupled bistable structure consists of a pair of mobile magnets that create two potential wells and thus the bistable phenomenon. It requires lower excitation to trigger bistable operation compared to conventional bistable structures. Based on previous research, this work focused on miniaturisation of the coupled bistable structure for energy harvesting application. The proposed bistable energy harvester is a combination of a Duffing’s nonlinear structure and a linear assisting resonator. Experimental results show that the output spectrum of the miniature coupled bistable vibration energy harvester was the superposition of several spectra. It had a higher maximum output power and a much greater bandwidth compared to simply the Duffing’s structure without the assisting resonato
Dataset for Solid-State Supercapacitor Fabricated in a Single Woven Textile Layer for E-Textiles Applications
No full textThe data is supporting a paper S Yong. J R Owen. S. Beeby, "Solid-State Supercapacitor Fabricated in a Single Woven Textile Layer for E-Textiles Applications ", Advanced Engineering Materials. 2017
Assigned DOI is https://doi.org/10.5258/SOTON/D0321</span
Dataset: Design Optimization of a Magnetically Levitated Electromagnetic Vibration Energy Harvester for Body Motion
No full textThis dataset supports the article entitled 'Design Optimization of a Magnetically Levitated Electromagnetic Vibration Energy Harvester for Body Motion', accepted for the publication in Proceedings of the PowerMEMS 2016.
K Pancharoen, D. Zhu, S.P. Beeby, Design Optimization of a Magnetically Levitated Electromagnetic Vibration Energy Harvester for Body Motion, in: Proceedings of PowerMEMS 2016, Paris, France, December 6–110, 2016.</span
A silicon microfluidic ultrasonic separator
No full textUltrasonic standing waves can be used to generate forces on particles within a fluid. Such forces have a number of potential applications in microfluidic devices. This paper describes such a device providing filtration on a microfluidic scale. It is microfabricated and uses ultrasound in the megahertz frequency range to concentrate particles at a node within the flow. It offers the possibility of a functional equivalent of a centrifugal separator for microfluidic systems. It is constructed using silicon and Pyrex, and hence is highly compatible with established microfabrication techniques. The modelling, design, fabrication and control of the device are discussed
Dataset for Efficient Energy Conversion in Electrically Assisted Bicycles Using a Switched Reluctance Machine under Torque Control
No full textThis dataset supports the publication: Bahareh Zaghari, Aleksas Stuikys, Alex S. Weddell, Steve Beeby Efficient Energy Conversion in Electrically Assisted Bicycles Using a Switched Reluctance Machine under Torque Control IEEE ACCESS</span
Dataset for the paper: Reliable UHF Long-Range Textile-Integrated RFID Tag based on a Compact Flexible Antenna Filament
No full textData supports the paper: Wagih, M.; Wei, Y.; Komolafe, A.; Torah, R.; Beeby, S. Reliable UHF Long-Range Textile-Integrated RFID Tag Based on a Compact Flexible Antenna Filament. Sensors 2020, 20, 3435.</span
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