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TitleSurface acoustic wave delay line for biosensor application
Publication TypeConference Paper
Year of Publication2008
AuthorsHirst, E.R., Xu W.L., Bronlund J.E., and Yuan Y.J.
Conference Name15th International Conference on Mechatronics and Machine Vision in Practice, M2VIP'08
Date Published2008
KeywordsAcoustic impedance, Acoustic surface wave devices, Acoustic waves, acoustics, Acoustoelectric effects, Analyte, Applications, Biosensor applications, Biosensors, Computer software reusability, Computer vision, Delay lines, Design constraints, Electronics systems, Impulse response, Impulse response models, Manufacturing Process, Mechatronics, Operating frequencies, Oxide minerals, Quartz, Quartz crystal microbalances, Saw devices, Sawing, Signal processing, Simulation predictions, Surface acoustic waves, waves
AbstractThis paper presents the analysis, design and manu-facture of a Surface Acoustic Wave (SAW) delay line for use as a bond-rupture biosensor. In contrast to commercial devices used in signal processing, the analyte changes the delay path of the developed device coating it in a layer of particles. The energy of the surface acoustic waves then removes the particles. Design constraints arise from both the manufacturing process and intended application. The developed device is reusable, durable and able withstand cleaning. As the device is in the prototype stage it is of reasonable size. The developed device is designed to work within an existing electronics system developed for Quartz Crystal Microbalance Bond-Rupture; this places restrictions on the operating frequency of the device and impedance. Using established Impulse Response models the SAW device is designed for this application. Experimental results are compared with the simulation predictions and future improvements are considered.

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