Tailored magnetoelastic sensor geometry for advanced functionality in wireless biliary stent monitoring systems
dc.contributor.author | Green, Scott Ryan | en_US |
dc.contributor.author | Gianchandani, Yogesh B. | en_US |
dc.date.accessioned | 2011-08-10T13:52:58Z | |
dc.date.available | 2011-08-10T13:52:58Z | |
dc.date.issued | 2010-07 | en_US |
dc.identifier.citation | Green, Scott R.; Gianchandani, Yogesh B. (2010). "Tailored magnetoelastic sensor geometry for advanced functionality in wireless biliary stent monitoring systems." Journal of Micromechanics and Microengineering, 20(7): 075040. <http://hdl.handle.net/2027.42/85405> | en_US |
dc.identifier.issn | 0960-1317 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/85405 | |
dc.description.abstract | This paper presents three types of wireless magnetoelastic resonant sensors with specific functionalities for monitoring sludge accumulation within biliary stents. The first design uses a geometry with a repeated cell shape that provides two well-separated resonant mode shapes and associated frequencies to permit spatial localization of mass loading. The second design implements a pattern with specific variation in feature densities to improve sensitivity to mass loading. The third design uses narrow ribbons joined by flexible couplers; this design adopts the advantages in flexibility and expandability of the other designs while maintaining the robust longitudinal mode shapes of a ribbon-shaped sensor. The sensors are batch patterned using photochemical machining from 25 µm thick 2605SA1 Metglas™, an amorphous Fe–Si alloy. Accumulation of biliary sludge is simulated with paraffin or gelatin, and the effects of viscous bile are simulated with a range of silicone fluids. Results from the first design show that the location of mass loads can be resolved within ~5 mm along the length of the sensor. The second design offers twice the sensitivity to mass loads (3000–36 000 ppm mg−1) of other designs. The third design provides a wide range of loading (sensitive to at least 10× the mass of the sensor) and survives compression into a 2 mm diameter tube as would be required for catheter-based delivery. | en_US |
dc.title | Tailored magnetoelastic sensor geometry for advanced functionality in wireless biliary stent monitoring systems | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/85405/1/jmm10_7_075040.pdf | |
dc.identifier.doi | 10.1088/0960-1317/20/7/075040 | en_US |
dc.identifier.source | Journal of Micromechanics and Microengineering | en_US |
dc.owningcollname | Physics, Department of |
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