NDLI: A capacitance-based whisker-like artificial sensor for fluid motion sensing

Content Provider	IEEE Xplore Digital Library
Author	Stocking, J.B. Eberhardt, W.C. Shakhsheer, Y.A. Calhoun, B.H. Paulus, J.R. Appleby, M.
Copyright Year	2010
Description	Author affiliation: University of Virginia, Charlottesville, USA (Stocking, J.B.; Eberhardt, W.C.; Shakhsheer, Y.A.; Calhoun, B.H.) \|\| Mikro Systems, Inc., Charlottesville, VA USA (Paulus, J.R.; Appleby, M.)
Abstract	The ability to navigate a fluid environment using only hydrodynamic information without visual or acoustic cues represents a technical challenge with broad utility for numerous commercial, military, and scientific purposes. Here we report the successful design, numerical modeling, fabrication, and experimental characterization of a novel, capacitance-based whisker-like artificial sensor for measuring fluid motion speed and direction. Inspired by seal vibrissae, our design features a rigid artificial whisker mounted on a novel cone-in-cone parallel-plate capacitor base, separated into four distinct quadrants, and covered by a polydimethylsiloxane (PDMS) membrane. The PDMS membrane creates the necessary damping and restoring forces, and the base divisions enable us to discriminate fluid direction. Numerical modeling of the system predicted capacitive output signals within a 1 pF range for flows ranging from 0 – 1.0 m/s. Experimental testing, however, using a custom-built force rig successfully demonstrated the sensor's ability to produce a reliable signal with a 3 pF range for the same flows. The testing showed the sensor's ability to discriminate flow-induced forces for both steady and oscillatory conditions with millinewton-level precision, and signal output from each of the four quadrants allowed us to extrapolate flow direction as well. Finally, the sensor was subjected to the same range of steady flows in our laboratory's water tunnel and produced nearly identical capacitance changes as a function of flow speed compared to the force rig testing.
Starting Page	2224
Ending Page	2229
File Size	774676
Page Count	6
File Format	PDF
ISBN	9781424481705
ISSN	19300395
e-ISBN	9781424481699
e-ISBN	9781424481682
DOI	10.1109/ICSENS.2010.5690637
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitance Force Fluids Numerical models Testing Biomembranes Load modeling
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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