Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61536
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dc.contributorDepartment of Mechanical Engineeringen_US
dc.creatorZeng, Zen_US
dc.creatorLiu, Men_US
dc.creatorXu, Hen_US
dc.creatorLiu, Wen_US
dc.creatorLiao, Yen_US
dc.creatorJin, Hen_US
dc.creatorZhou, Len_US
dc.creatorZhang, Zen_US
dc.creatorSu, Zen_US
dc.date.accessioned2016-12-19T08:56:13Z-
dc.date.available2016-12-19T08:56:13Z-
dc.identifier.issn0964-1726en_US
dc.identifier.urihttp://hdl.handle.net/10397/61536-
dc.language.isoenen_US
dc.publisherInstitute of Physics Publishingen_US
dc.rights© 2016 IOP Publishing Ltden_US
dc.rightsThis manuscript version is made available under theCC-BY-NC-ND 4.0 (license https://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.rightsThe following publication Zeng, Z., Liu, M., Xu, H., Liu, W., Liao, Y., Jin, H., ... & Su, Z. (2016). A coatable, light-weight, fast-response nanocomposite sensor for the in situ acquisition of dynamic elastic disturbance: From structural vibration to ultrasonic waves. Smart Materials and Structures, 25(6), 065005 is available at https://doi.org/10.1088/0964-1726/25/6/065005en_US
dc.subjectGuided ultrasonic wavesen_US
dc.subjectNanocomposite sensoren_US
dc.subjectStructural health monitoringen_US
dc.subjectVibrationen_US
dc.titleA coatable, light-weight, fast-response nanocomposite sensor for the in situ acquisition of dynamic elastic disturbance : from structural vibration to ultrasonic wavesen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume25en_US
dc.identifier.issue6en_US
dc.identifier.doi10.1088/0964-1726/25/6/065005en_US
dcterms.abstractInspired by an innovative sensing philosophy, a light-weight nanocomposite sensor made of a hybrid of carbon black (CB)/polyvinylidene fluoride (PVDF) has been developed. The nanoscalar architecture and percolation characteristics of the hybrid were optimized in order to fulfil the in situ acquisition of dynamic elastic disturbance from low-frequency vibration to high-frequency ultrasonic waves. Dynamic particulate motion induced by elastic disturbance modulates the infrastructure of the CB conductive network in the sensor, with the introduction of the tunneling effect, leading to dynamic alteration in the piezoresistivity measured by the sensor. Electrical analysis, morphological characterization, and static/dynamic electromechanical response interrogation were implemented to advance our insight into the sensing mechanism of the sensor, and meanwhile facilitate understanding of the optimal percolation threshold. At the optimal threshold (∼6.5 wt%), the sensor exhibits high fidelity, a fast response, and high sensitivity to ultrafast elastic disturbance (in an ultrasonic regime up to 400 kHz), yet with an ultralow magnitude (on the order of micrometers). The performance of the sensor was evaluated against a conventional strain gauge and piezoelectric transducer, showing excellent coincidence, yet a much greater gauge factor and frequency-independent piezoresistive behavior. Coatable on a structure and deployable in a large quantity to form a dense sensor network, this nanocomposite sensor has blazed a trail for implementing in situ sensing for vibration- or ultrasonic-wave-based structural health monitoring, by striking a compromise between 'sensing cost' and 'sensing effectiveness'.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationSmart materials and structures, June 2016, v. 25, no. 6, 065005en_US
dcterms.isPartOfSmart materials and structuresen_US
dcterms.issued2016-06-
dc.identifier.isiWOS:000376194900005-
dc.identifier.scopus2-s2.0-84969785466-
dc.identifier.eissn1361-665Xen_US
dc.identifier.rosgroupid2015002963-
dc.description.ros2015-2016 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate202207 bcvcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberME-1018-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextHong Kong Innovation and Technology Commissionen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS6644949-
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