{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T22:51:34Z","timestamp":1780613494144,"version":"3.54.1"},"reference-count":56,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2020,8,24]],"date-time":"2020-08-24T00:00:00Z","timestamp":1598227200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/R029644\/1"],"award-info":[{"award-number":["EP\/R029644\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000780","name":"European Commission","doi-asserted-by":"publisher","award":["H2020-FETOPEN-2018- 829186"],"award-info":[{"award-number":["H2020-FETOPEN-2018- 829186"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents a dual-function wearable device (Tacsac) with capacitive tactile sensing and integrated tactile feedback capability to enable communication among deafblind people. Tacsac has a skin contactor which enhances localized vibrotactile stimulation of the skin as a means of feedback to the user. It comprises two main modules\u2014the touch-sensing module and the vibrotactile module; both stacked and integrated as a single device. The vibrotactile module is an electromagnetic actuator that employs a flexible coil and a permanent magnet assembled in soft poly (dimethylsiloxane) (PDMS), while the touch-sensing module is a planar capacitive metal-insulator-metal (MIM) structure. The flexible coil was fabricated on a 50 \u00b5m polyimide (PI) sheet using Lithographie Galvanoformung Abformung (LIGA) micromoulding technique. The Tacsac device has been tested for independent sensing and actuation as well as dual sensing-actuation mode. The measured vibration profiles of the actuator showed a synchronous response to external stimulus for a wide range of frequencies (10 Hz to 200 Hz) within the perceivable tactile frequency thresholds of the human hand. The resonance vibration frequency of the actuator is in the range of 60\u201370 Hz with an observed maximum off-plane displacement of 0.377 mm at coil current of 180 mA. The capacitive touch-sensitive layer was able to respond to touch with minimal noise both when actuator vibration is ON and OFF. A mobile application was also developed to demonstrate the application of Tacsac for communication between deafblind person wearing the device and a mobile phone user who is not deafblind. This advances existing tactile displays by providing efficient two-way communication through the use of a single device for both localized haptic feedback and touch-sensing.<\/jats:p>","DOI":"10.3390\/s20174780","type":"journal-article","created":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T09:30:07Z","timestamp":1598347807000},"page":"4780","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":64,"title":["Tacsac: A Wearable Haptic Device with Capacitive Touch-Sensing Capability for Tactile Display"],"prefix":"10.3390","volume":"20","author":[{"given":"Oliver","family":"Ozioko","sequence":"first","affiliation":[{"name":"Bendable Electronics and Sensing Technologies (BEST) Group, University of Glasgow, Glasgow G12 8QQ, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William","family":"Navaraj","sequence":"additional","affiliation":[{"name":"Department of Engineering, Nottingham Trent University, Clifton Campus, Nottingham NG11 8NS, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marion","family":"Hersh","sequence":"additional","affiliation":[{"name":"Biomedical Engineering, University of Glasgow, Glasgow G12 8LP, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3858-3841","authenticated-orcid":false,"given":"Ravinder","family":"Dahiya","sequence":"additional","affiliation":[{"name":"Bendable Electronics and Sensing Technologies (BEST) Group, University of Glasgow, Glasgow G12 8QQ, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"385","DOI":"10.1146\/annurev-control-060117-105043","article-title":"Haptics: The Present and Future of Artificial Touch Sensation","volume":"1","author":"Culbertson","year":"2018","journal-title":"Annu. Rev. Control Robot. Auton. Syst."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"5016","DOI":"10.1038\/s41598-019-40821-1","article-title":"Multi-Modal Haptic Feedback for Grip Force Reduction in Robotic Surgery","volume":"9","author":"Abiri","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2016","DOI":"10.1109\/JPROC.2019.2941366","article-title":"Large-Area Soft e-Skin: The Challenges Beyond Sensor Designs","volume":"107","author":"Dahiya","year":"2019","journal-title":"Proc. IEEE"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1344","DOI":"10.1109\/TNSRE.2020.2986222","article-title":"Wearable Assistive Tactile Communication Interface Based on Integrated Touch Sensors and Actuators","volume":"28","author":"Ozioko","year":"2020","journal-title":"IEEE Trans. Neural Syst. Rehabil. Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1097\/MOU.0b013e32831a478c","article-title":"Haptic Feedback in Robot-Assisted Minimally Invasive Surgery","volume":"19","author":"Okamura","year":"2009","journal-title":"Curr. Opin. Urol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"4182","DOI":"10.1016\/j.matpr.2017.02.120","article-title":"Haptic Technology: A comprehensive review on its applications and future prospects","volume":"4","author":"Sreelakshmi","year":"2017","journal-title":"Mater. Today Proc."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"393","DOI":"10.1016\/S0097-8493(97)00030-7","article-title":"Haptics in virtual environments: Taxonomy, research status, and challenges","volume":"21","author":"Srinivasan","year":"1997","journal-title":"Comput. Graph."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Goethals, P. (2008). Tactile Feedback for Robot Assisted Minimally Invasive Surgery: An Overview, Department of Mechanical Engineering KU Leuven.","DOI":"10.1016\/S0021-9290(07)70635-8"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1109\/MCG.2004.1274059","article-title":"Deriving haptic design guidelines from human physiological, psychophysical, and neurological foundations","volume":"24","author":"Hale","year":"2004","journal-title":"IEEE Comput. Graph. Appl."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"586","DOI":"10.3758\/BF03207520","article-title":"Effects of the menstrual cycle on vibrotactile sensitivity","volume":"36","author":"Gescheider","year":"1984","journal-title":"Percept. Psychophys."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"61","DOI":"10.3758\/BF03204869","article-title":"Effects of aging on the suprathreshold responses to vibration","volume":"32","author":"Verrillo","year":"1982","journal-title":"Percept. Psychophys."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"44","DOI":"10.3109\/08990220.2014.958216","article-title":"Age- and sex-related changes in vibrotactile sensitivity of hand and face in neurotypical adults","volume":"32","author":"Venkatesan","year":"2015","journal-title":"Somatosens. Mot. Res."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1016\/j.ijhcs.2016.01.004","article-title":"Designing wearable vibrotactile notifications for information communication","volume":"89","author":"Wang","year":"2016","journal-title":"Int. J. Hum. Comput. Stud."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Jones, L.A., and Lederman, S.J. (2006). Human Hand Function, Oxford University Press.","DOI":"10.1093\/acprof:oso\/9780195173154.001.0001"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Dario, P. (1988). The Physiology and Psychophysics of Touch. Sensors and Sensory Systems for Advanced Robots, Springer.","DOI":"10.1007\/978-3-642-83410-3"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/j.sna.2012.02.051","article-title":"A review of tactile sensing technologies with applications in biomedical engineering","volume":"179","author":"Tiwana","year":"2012","journal-title":"Sens. Actuators A Phys."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1016\/j.mtphys.2017.06.002","article-title":"Recent progresses on flexible tactile sensors","volume":"1","author":"Wan","year":"2017","journal-title":"Mater. Today Phys."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1109\/JPROC.2018.2890729","article-title":"E-Skin: From Humanoids to Humans","volume":"Volume 107","author":"Dahiya","year":"2019","journal-title":"Proceedings of the IEEE"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Taube Navaraj, W., Garc\u00eda N\u00fa\u00f1ez, C., Shakthivel, D., Vinciguerra, V., Labeau, F., Gregory, D.H., and Dahiya, R. (2017). Nanowire FET Based Neural Element for Robotic Tactile Sensing Skin. Front. Neurosci., 11.","DOI":"10.3389\/fnins.2017.00501"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"20190156","DOI":"10.1098\/rsta.2019.0156","article-title":"Soft eSkin: Distributed touch sensing with harmonized energy and computing","volume":"378","author":"Soni","year":"2020","journal-title":"Philos. Trans. R. Soc. A"},{"key":"ref_21","unstructured":"Iniewski, K., and Carrara, S. (2015). Epidermal electronics\u2014flexible electronics for biomedical applications. Handbook of Bioelectronics: Directly Interfacing Electronics and Biological Systems, Cambridge University Press."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Dahiya, R.S., and Valle, M. (2013). Robotic Tactile Sensing: Technologies and System, Springer.","DOI":"10.1007\/978-94-007-0579-1"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Hersh, M. (2018). Mobility technologies for blind, partially sighted and deafblind people: Design issues. Mobility of Visually Impaired People, Springer.","DOI":"10.1007\/978-3-319-54446-5_13"},{"key":"ref_24","unstructured":"Pissaloux, E., and Velazquez, R. (2018). Mobility Technologies for Blind, Partially Sighted and Deafblind People: Design Issues. Mobility of Visually Impaired People: Fundamentals and ICT Assistive Technologies, Springer International Publishing."},{"key":"ref_25","first-page":"1","article-title":"Horseback riding therapy for a deafblind individual enabled by a haptic interface","volume":"30","author":"Ogrinc","year":"2017","journal-title":"Assist. Technol."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Dammeyer, J. (2014). Deafblindness: A Review of the Literature. Scand. J. Public Health, 554\u2013562.","DOI":"10.1177\/1403494814544399"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1080\/17483107.2017.1385100","article-title":"Haptic-assistive technologies for audition and vision sensory disabilities","volume":"13","author":"Sorgini","year":"2018","journal-title":"Disabil. Rehabil. Assist. Technol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2166","DOI":"10.1109\/LRA.2018.2810887","article-title":"Design and evaluation of a wearable haptic device for skin stretch, pressure, and vibrotactile stimuli","volume":"3","author":"Aggravi","year":"2018","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Schorr, S.B., Quek, Z.F., Romano, R.Y., Nisky, I., Provancher, W.R., and Okamura, A.M. (2013, January 6\u201310). Sensory substitution via cutaneous skin stretch feedback. Proceedings of the 2013 IEEE International Conference on Robotics and Automation, Karlsruhe, Germany.","DOI":"10.1109\/ICRA.2013.6630894"},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Caporusso, N., Biasi, L., Cinquepalmi, G., Trotta, G.F., Brunetti, A., and Bevilacqua, V. (2017, January 17\u201321). A wearable device supporting multiple touch-and gesture-based languages for the deaf-blind. Proceedings of the International Conference on Applied Human Factors and Ergonomics, Los Angeles, CA, USA.","DOI":"10.1007\/978-3-319-60639-2_4"},{"key":"ref_31","first-page":"1","article-title":"Human and Machine Haptics","volume":"147","author":"Srinivasan","year":"1999","journal-title":"RLE Prog. Rep."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Navaraj, W., and Dahiya, R. (2019). Fingerprint-Enhanced Capacitive-Piezoelectric Flexible Sensing Skin to Discriminate Static and Dynamic Tactile Stimuli. Advanced Intelligent Systems, WILEY-VCH Verlag GmbH & Co. KGaA.","DOI":"10.1002\/aisy.201900051"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1080\/17434440.2018.1484727","article-title":"A review of haptic simulator for oral and maxillofacial surgery based on virtual reality","volume":"15","author":"Chen","year":"2018","journal-title":"Expert Rev. Med. Devices"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"4405","DOI":"10.1038\/s41467-019-12303-5","article-title":"A bimodal soft electronic skin for tactile and touchless interaction in real time","volume":"10","author":"Ge","year":"2019","journal-title":"Nat. Commun."},{"key":"ref_35","first-page":"6","article-title":"Developing Electronic Skin with the Sense of Touch","volume":"31","author":"Dahiya","year":"2015","journal-title":"Inf. Disp."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"2011","DOI":"10.1109\/JPROC.2019.2941665","article-title":"Flexible Electronic Skin: From Humanoids to Humans [Scanning the Issue]","volume":"Volume 107","author":"Dahiya","year":"2019","journal-title":"Proceedings of the IEEE"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"631","DOI":"10.1007\/s12206-018-0110-8","article-title":"Resonating tactile stimulators based on piezoelectric polymer films","volume":"32","author":"Seo","year":"2018","journal-title":"J. Mech. Sci. Technol."},{"key":"ref_38","first-page":"259","article-title":"Electromagnetic Linear Actuator providing High Force Density per Unit Area without Position Sensor as a Tactile Cell","volume":"7","author":"Noguchi","year":"2018","journal-title":"IEEJ J. Ind. Appl."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1109\/TOH.2016.2591951","article-title":"Using Pot-Magnets to Enable Stable and Scalable Electromagnetic Tactile Displays","volume":"Volume 10","author":"Shea","year":"2017","journal-title":"IEEE Transactions on Haptics"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"055018","DOI":"10.1088\/0964-1726\/24\/5\/055018","article-title":"Miniaturized 3 \u00d7 3 array film vibrotactile actuator made with cellulose acetate for virtual reality simulators","volume":"24","author":"Hyun","year":"2015","journal-title":"Smart Mater. Struct."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"035007","DOI":"10.1088\/1361-665X\/ab675b","article-title":"Bidirectional tactile display driven by electrostatic dielectric elastomer actuator","volume":"29","author":"Phung","year":"2020","journal-title":"Smart Mater. Struct."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"065012","DOI":"10.1088\/0960-1317\/18\/6\/065012","article-title":"Fabrication of a bubble-driven arrayed actuator for a tactile display","volume":"18","author":"Mitsuhiro","year":"2008","journal-title":"J. Micromechanics Microengineering"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"025016","DOI":"10.1088\/0960-1317\/25\/2\/025016","article-title":"Electrotactile display using microfabricated micro-needle array","volume":"25","author":"Kitamura","year":"2015","journal-title":"J. Micromechanics Microengineering"},{"key":"ref_44","doi-asserted-by":"crossref","unstructured":"Ozioko, O., Taube, W., Hersh, M., and Dahiya, R. (2017, January 19\u201321). SmartFingerBraille: A tactile sensing and actuation based communication glove for deafblind people. Proceedings of the 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE), Edinburgh, UK.","DOI":"10.1109\/ISIE.2017.8001563"},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Gollner, U., Bieling, T., and Joost, G. (2012). Mobile Lorm Glove\u2014Introducing a Communication Device for Deaf-Blind People. TEI 2012, Association for Computing Machinery.","DOI":"10.1145\/2148131.2148159"},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Sapra, P., Parsurampuria, A.K., Muralikrishnan, S., Gupta, V., Karthikeyan, H., Bhagavatheesh, K., Venkatesan, A., Valiyaveetil, S., Balakrishnan, M., and Rao, P.V.M. (2017, January 6\u20139). Refreshable Braille Display Using Shape Memory Alloy With Latch Mechanism. Proceedings of the 13th ASME\/IEEE International Conference on Mechatronic and Embedded Systems and Applications, Cleveland, OH, USA.","DOI":"10.1115\/DETC2017-68311"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.displa.2013.03.001","article-title":"Tactile display using shape memory alloy micro-coil actuator and magnetic latch mechanism","volume":"34","author":"Matsunaga","year":"2013","journal-title":"Displays"},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"908","DOI":"10.1109\/JMEMS.2012.2190043","article-title":"A Refreshable Braille Cell Based on Pneumatic Microbubble Actuators","volume":"21","author":"Wu","year":"2012","journal-title":"IEEE J. Microelectromechanical Syst."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"2521","DOI":"10.1177\/1045389X19836172","article-title":"Design, modeling, and evaluation of a slim haptic actuator based on electrorheological fluid","volume":"30","author":"Mazursky","year":"2019","journal-title":"J. Intell. Mater. Syst. Struct."},{"key":"ref_50","first-page":"145","article-title":"Developing and implementing a curriculum for children with deafblindness\/multisensory impairment","volume":"21","author":"Hathazi","year":"2010","journal-title":"Educatia"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1800244","DOI":"10.1002\/adfm.201800244","article-title":"Soft Electromagnetic Actuators: Miniature Soft Electromagnetic Actuators for Robotic Applications","volume":"28","author":"Do","year":"2018","journal-title":"Adv. Funct. Mater."},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Caporusso, N., Trizio, M., and Perrone, G. (2014). Pervasive assistive technology for the deaf-blind need, emergency and assistance through the sense of touch. Pervasive Health, Springer.","DOI":"10.1007\/978-1-4471-6413-5_12"},{"key":"ref_53","unstructured":"Ozioko, O., and Hersh, M.A. (2015, January 9\u201312). Development of a Portable Two-way Communication and Information Device for Deafblind People. Proceedings of the 13th AAATE International Conference, Budapest, Hungary."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1016\/0924-4247(92)80168-3","article-title":"The case for magnetically driven microactuators","volume":"33","year":"1992","journal-title":"Sens. Actuators A Phys."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"486","DOI":"10.3390\/mi5030486","article-title":"UV-LIGA: From development to commercialization","volume":"5","author":"Genolet","year":"2014","journal-title":"Micromachines"},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Schlesinger, M., and Paunovic, M. (2011). Modern Electroplating, John Wiley & Sons.","DOI":"10.1002\/9780470602638"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/17\/4780\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:06:02Z","timestamp":1760177162000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/17\/4780"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,24]]},"references-count":56,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2020,9]]}},"alternative-id":["s20174780"],"URL":"https:\/\/doi.org\/10.3390\/s20174780","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,24]]}}}