{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T18:23:54Z","timestamp":1770488634971,"version":"3.49.0"},"reference-count":50,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2019,9,10]],"date-time":"2019-09-10T00:00:00Z","timestamp":1568073600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In nature, there are several examples of sophisticated sensory systems to sense flows, e.g., the vibrissae of mammals. Seals can detect the flow of their prey, and rats are able to perceive the flow of surrounding air. The vibrissae are arranged around muzzle of an animal. A vibrissa consists of two major components: a shaft (infector) and a follicle\u2013sinus complex (receptor), whereby the base of the shaft is supported by the follicle-sinus complex. The vibrissa shaft collects and transmits stimuli, e.g., flows, while the follicle-sinus complex transduces them for further processing. Beside detecting flows, the animals can also recognize the size of an object or determine the surface texture. Here, the combination of these functionalities in a single sensory system serves as paragon for artificial tactile sensors. The detection of flows becomes important regarding the measurement of flow characteristics, e.g., velocity, as well as the influence of the sensor during the scanning of objects. These aspects are closely related to each other, but, how can the characteristics of flow be represented by the signals at the base of a vibrissa shaft or by an artificial vibrissa-like sensor respectively? In this work, the structure of a natural vibrissa shaft is simplified to a slender, cylindrical\/tapered elastic beam. The model is analyzed in simulation and experiment in order to identify the necessary observables to evaluate flows based on the quasi-static large deflection of the sensor shaft inside a steady, non-uniform, laminar, in-compressible flow.<\/jats:p>","DOI":"10.3390\/s19183892","type":"journal-article","created":{"date-parts":[[2019,9,10]],"date-time":"2019-09-10T10:52:26Z","timestamp":1568112746000},"page":"3892","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["An Artificial Vibrissa-Like Sensor for Detection of Flows"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1581-7668","authenticated-orcid":false,"given":"Moritz","family":"Scharff","sequence":"first","affiliation":[{"name":"Technical Mechanics Group, Technische Universit\u00e4t Ilmenau, Max-Planck-Ring 12, 98693 Ilmenau, Germany"},{"name":"Section of Mechanical Engineering, Pontificial Catholic University of Peru, San Miguel 15088, Lima, Peru"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philipp","family":"Schorr","sequence":"additional","affiliation":[{"name":"Technical Mechanics Group, Technische Universit\u00e4t Ilmenau, Max-Planck-Ring 12, 98693 Ilmenau, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tatiana","family":"Becker","sequence":"additional","affiliation":[{"name":"Technical Mechanics Group, Technische Universit\u00e4t Ilmenau, Max-Planck-Ring 12, 98693 Ilmenau, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2774-618X","authenticated-orcid":false,"given":"Christian","family":"Resagk","sequence":"additional","affiliation":[{"name":"Institute of Thermodynamics and Fluid Mechanics, Technische Universit\u00e4t Ilmenau, 98693 Ilmenau, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jorge H.","family":"Alencastre Miranda","sequence":"additional","affiliation":[{"name":"Section of Mechanical Engineering, Pontificial Catholic University of Peru, San Miguel 15088, Lima, Peru"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7618-1926","authenticated-orcid":false,"given":"Carsten","family":"Behn","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, Schmalkalden University of Applied Sciences, 98574 Schmalkalden, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,9,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sheverev, V., Stepaniuk, V., and Narang, A.S. (2019). Principles of Drag Force Flow Sensor. Handbook of Pharmaceutical Wet Granulation, Academic Press.","DOI":"10.1016\/B978-0-12-810460-6.00019-1"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Bleckmann, H., Mogdans, J., and Coombs, S.L. (2014). Flow Sensing in Air and Water: Behavioral, Neural and Engineering Principles of Operation, Springer.","DOI":"10.1007\/978-3-642-41446-6"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2439","DOI":"10.1152\/jn.00707.2006","article-title":"Biomechanical Models for Radial Distance Determination by the Rat Vibrissal System","volume":"98","author":"Birdwell","year":"2007","journal-title":"J. Neurophysiol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"6499","DOI":"10.1523\/JNEUROSCI.23-16-06499.2003","article-title":"Vibrissa Resonance as a Transduction Mechanism for Tactile Encoding","volume":"23","author":"Neimark","year":"2003","journal-title":"J. Neurosci."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1109\/MRA.2009.933624","article-title":"Whisking with robots: From Rat Vibrissae to Biomimetic Technology for Active Touch","volume":"16","author":"Prescott","year":"2009","journal-title":"IEEE Robot. Automat. Mag."},{"key":"ref_6","unstructured":"Scharff, M., Rivera Campos, R.A., Merker, L., Alencastre, J.H., Behn, C., and Zimmermann, K. (2018, January 5\u20137). Flow Detection using an Artificial Vibrissa-Like Sensor\u2014Simulations and Experiments. Proceedings of the 18th International Conference on Mechatronics-Mechatronika (ME), Brno, Czech Republic."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1792","DOI":"10.1016\/S0166-4328(97)83328-1","article-title":"Functional Architecture of the Mystacial Vibrissae","volume":"84","author":"Brecht","year":"1997","journal-title":"Behav. Brain Res."},{"key":"ref_8","first-page":"147","article-title":"The Musculature of the Mystacial Vibrissae of the White Mouse","volume":"135","year":"1982","journal-title":"J. Anat."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1109\/JSEN.2011.2161464","article-title":"Structural Characterization of the Whisker System of the Rat","volume":"12","author":"Voges","year":"2012","journal-title":"IEEE Sens. J."},{"key":"ref_10","first-page":"154","article-title":"A Comparative Light Microscopic Analysis of the Sensory Innervation of the Mystacial Pad. I. Innervation of Vibrissal Follicle-Sinus Complexes","volume":"252","author":"Rice","year":"1986","journal-title":"Scholarpedia"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1016\/0006-8993(69)90061-4","article-title":"Coding of Somatic Sensory Input by Vibrissae Neurons in the Rat\u2019s Trigeminal Ganglion","volume":"12","author":"Zucker","year":"1969","journal-title":"Brain Res."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/j.neuroscience.2017.08.005","article-title":"What the Whiskers Tell the Brain","volume":"368","author":"Campagner","year":"2018","journal-title":"Neuroscience"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"32372","DOI":"10.4249\/scholarpedia.32372","article-title":"Vibrissal Mechanoreceptors","volume":"12","author":"Ebara","year":"2017","journal-title":"Scholarpedia"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Ginter, C.C., DeWitt, T.J., Fish, F.E., and Marshall, C.D. (2012). Fused Traditional and Geometric Morphometrics demonstrate Piniped Whisker Diversity. PLoS ONE, 7.","DOI":"10.1371\/journal.pone.0034481"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Hans, H., Jianmin, M., Alvarado, P.V.Y., and Triantafyllou, M.S. (2011, January 7\u201311). Chemical Composition and Physical Features of Harbor Seal (Phoca Vitulina) vibrissae for Underwater Sensing Application. Proceedings of the IEEE International Conference on Robotics and Biomimetics, Karon Beach, Phuket, Thailand.","DOI":"10.1109\/ROBIO.2011.6181492"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1038\/28303","article-title":"Seal Whiskers Detect Water Movements","volume":"394","author":"Dehnhardt","year":"1998","journal-title":"Nature"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Hanke, W., Wieskotten, S., Niesterok, B., Miersch, L., Witte, M., Brede, M., Leder, A., and Dehnhardt, G. (2012). Hydrodynamic Perception in Pinnipeds. Nature-Inspired Fluid Mechanics, Springer.","DOI":"10.1007\/978-3-642-28302-4_16"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"937","DOI":"10.1242\/jeb.126896","article-title":"Mechanical Responses of Rat Vibrissae to Airflow","volume":"219","author":"Yu","year":"2016","journal-title":"J. Exp. Biol."},{"key":"ref_19","first-page":"e1600716","article-title":"Whiskers Aid Anemotaxis in Rats","volume":"2","author":"Yu","year":"2016","journal-title":"J. Exp. Biol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2665","DOI":"10.1242\/jeb.043216","article-title":"Harbor Seal Vibrissa Morphology Suppresses Vortex-Induced Vibrations","volume":"213","author":"Hanke","year":"2010","journal-title":"J. Exp. Biol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"3077","DOI":"10.1098\/rstb.2011.0155","article-title":"Flow Sensing by Pinniped Whiskers","volume":"366","author":"Miersch","year":"2011","journal-title":"Philos. Trans. R. Soc. B"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Murphy, C.T., Eberhardt, W.C., Calhoun, B.H., Mann, K.A., Mann, D.A., and Maravall, M. (2013). Effect of Angle on Flow-Induced Vibrations of Pinniped Vibrissae. PLoS ONE, 8.","DOI":"10.1371\/journal.pone.0069872"},{"key":"ref_23","unstructured":"Blevins, R.D. (1994). Flow-Induced Vibration, Publishing Company."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1093\/icb\/24.1.37","article-title":"Drag and Flexibility in Sessile Organisms","volume":"24","author":"Vogel","year":"2015","journal-title":"Am. Zool."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.jfluidstructs.2015.10.007","article-title":"Drag Reduction by Elastic Reconfiguration of Non-Uniform Beams in Non-Uniform Flows","volume":"60","author":"Leclercq","year":"2016","journal-title":"J. Fluids. Struct."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"479","DOI":"10.1038\/nature01232","article-title":"Drag Reduction through Self-Similar Bending of a Flexible Body","volume":"420","author":"Alben","year":"2002","journal-title":"Nature"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"094024","DOI":"10.1088\/0964-1726\/21\/9\/094024","article-title":"Force Sensitive Carbon Nanotube Arrays for Biologically Inspired Airflow Sensing","volume":"21","author":"Maschmann","year":"2012","journal-title":"Smart Mater. Struct."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"3292","DOI":"10.1002\/2014WR015436","article-title":"Drag Force Parameters of Rigid and Flexible Vegetal Elements","volume":"51","author":"Chapman","year":"2015","journal-title":"Water Resour. Res."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1146\/annurev.fluid.40.111406.102135","article-title":"Effects of Wind on Plants","volume":"40","year":"2008","journal-title":"Annu. Rev. Fluid Mech."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"7267","DOI":"10.4249\/scholarpedia.7267","article-title":"A Spider\u2019s Tactile Hairs","volume":"10","author":"Barth","year":"2015","journal-title":"Scholarpedia"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"32955","DOI":"10.1038\/srep32955","article-title":"From Biological Cilia to Artificial Flow Sensors: Biomimetic Soft Polymer Nanosensors with High Sensing Performance","volume":"6","author":"Asadniaand","year":"2016","journal-title":"Sci. Rep."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Kottapalli, A.G.P., Asadnia, M., Miao, J.M., and Triantafyllou, M.S. (2015, January 18\u201322). Harbor seal whisker inspired flow sensors to reduce vortex-induced vibrations. Proceedings of the 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS), Estoril, Portugal.","DOI":"10.1109\/MEMSYS.2015.7051102"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Gro\u00dfe, S., and Schr\u00f6der, W. (2012). Deflection-based Flow Field Sensors\u2014Examples and Requirements. Frontiers in Sensing, Springer.","DOI":"10.1007\/978-3-211-99749-9_27"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"014012","DOI":"10.1088\/0964-1726\/22\/1\/014012","article-title":"Calibration and Validation of a Harbor Seal Whisker-Inspired Flow Sensor","volume":"22","author":"Beem","year":"2013","journal-title":"Smart Mater. Struct."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1038\/443525a","article-title":"Robotic Whiskers used to Sense Features","volume":"443","author":"Solomon","year":"2006","journal-title":"Nature"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"046018","DOI":"10.1088\/1748-3190\/10\/4\/046018","article-title":"Tactile Soft-Sparse Mean Fluid-Flow Imaging with a Robotic Whisker Array","volume":"10","author":"Tuna","year":"2015","journal-title":"Bioinspir. Biomim."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"056011","DOI":"10.1088\/1748-3190\/11\/5\/056011","article-title":"Development of an Artificial Sensor for Hydrodynamic Detection Inspired by a Seal\u2019s Whisker Array","volume":"11","author":"Eberhardt","year":"2016","journal-title":"Bioinspir. Biomim."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"037002","DOI":"10.1088\/1361-665X\/aa5a35","article-title":"Geometric Scaling of Artificial Hair Sensors for Flow Measurement under different Conditions","volume":"26","author":"Su","year":"2017","journal-title":"Smart Mater. Struct."},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Rooney, T., Pearson, M.J., and Pipe, A.G. (2015, January 28\u201331). Measuring the Local Viscosity and Velocity of Fluids using a Biomimetic Tactile Whisker. Proceedings of the Biomimetic and Biohybrid Systems, Barcelona, Spain.","DOI":"10.1007\/978-3-319-22979-9_7"},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Valdivia y Alvarado, P., Subramaniam, V., and Triantafyllou, M. (2012, January 28\u201331). Design of a Bio-Inspired Whisker Sensor for Underwater Applications. Proceedings of the IEEE SENSORS Proceedings, Taipei, Taiwan.","DOI":"10.1109\/ICSENS.2012.6411517"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"6510","DOI":"10.1523\/JNEUROSCI.23-16-06510.2003","article-title":"Mechanical Characteristics of Rat Vibrissae: Resonant Frequencies and Damping in Isolated Whiskers and in the Awake Behaving Animal","volume":"23","author":"Hartmann","year":"2003","journal-title":"J. Neurosci."},{"key":"ref_42","unstructured":"Cohen, I.M., and Kundu, P.K. (2004). Fluid Mechanics, Academic Press."},{"key":"ref_43","doi-asserted-by":"crossref","unstructured":"Williams, C.M., and Kramer, E.M. (2010). The Advantages of a Tapered Whisker. PLoS ONE, 5.","DOI":"10.1371\/journal.pone.0008806"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"469","DOI":"10.1016\/0735-1933(94)90046-9","article-title":"A Symmetric Solution for Velocity Profile in Laminar Flow through Rectangular Ducts","volume":"21","author":"Spiga","year":"1994","journal-title":"Int. J. Heat. Mass. Transf."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/S0889-9746(02)00099-3","article-title":"Fluctuating Lift on a Circular Cylinder: Review and New Measurements","volume":"17","author":"Norberg","year":"2003","journal-title":"J. Fluids. Struct."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"548","DOI":"10.1134\/S0010508213050067","article-title":"Measurement of Gas Velocity in a High-Gradient Flow, Based on Velocity of Tracer Particles","volume":"49","author":"Boiko","year":"2013","journal-title":"Combust. Explos. Shock Waves"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"11291","DOI":"10.1073\/pnas.1018740108","article-title":"Bat Wing Sensors Support Flight Control","volume":"108","author":"Chadha","year":"2011","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Merker, L., Scharff, M., Zimmermann, K., and Behn, C. (2018, January 26\u201329). Signal Tuning of Observables at the Support of a Vibrissa-like Tactile Sensor in Different Scanning Scenarios. Proceedings of the 7th IEEE International Conference on Biomedical Robotics and Biomechatronics (Biorob), Enschede, The Netherlands.","DOI":"10.1109\/BIOROB.2018.8487961"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"251","DOI":"10.3389\/fnbeh.2016.00251","article-title":"Whisker Contact Detection of Rodents Based on Slow and Fast Mechanical Inputs","volume":"10","author":"Claverie","year":"2017","journal-title":"Front. Behav. Neurosci."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"587","DOI":"10.1515\/teme-2016-0066","article-title":"Multi-Component Force Measurement in Micromachining","volume":"84","author":"Marangoni","year":"2017","journal-title":"tm-Tech. 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