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dc.contributor.authorWang, Wenyuen
dc.contributor.authorStipp, Patrick Nen
dc.contributor.authorOuaras, Karimen
dc.contributor.authorFathi, Saeeden
dc.contributor.authorHuang, Sheryen
dc.date.accessioned2020-07-08T23:30:26Z
dc.date.available2020-07-08T23:30:26Z
dc.date.issued2020-06-08en
dc.identifier.issn1613-6810
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/307778
dc.description.abstractFreely suspended nanofibers, such as spider silk, harnessing their small diameter (sub-micrometer) and spanning fiber morphology, behave as a nonresonating acoustic sensor. The associated sensing characteristics, departing from conventional resonant acoustic sensors, could be of tremendous interest for the development of high sensitivity, broadband audible sensors for applications in environmental monitoring, biomedical diagnostics, and internet-of-things. Herein, a low packing density, freely suspended nanofiber mesh with a piezoelectric active polymer is fabricated, demonstrating a self-powered acoustic sensing platform with broad sensitivity bandwidth covering 200-5000 Hz at hearing-safe sound pressure levels. Dynamic near-field electrospinning is developed to fabricate in situ poled poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) nanofiber mesh (average fiber diameter ≈307 nm), exhibiting visible light transparency greater than 97%. With the ability to span the nanomesh across a suspension distance of 3 mm with minimized fiber stacking (≈18% fiber packing density), individual nanofibers can freely imitate the acoustic-driven fluctuation of airflow in a collective manner, where piezoelectricity is harvested at two-terminal electrodes for direct signal collection. Applications of the nanofiber mesh in music recording with good signal fidelity are demonstrated.
dc.languageengen
dc.publisherWiley-Blackwell
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectP(VDF-TrFE)en
dc.subjectbioinspired acousticsen
dc.subjectenergy harvestingen
dc.subjectnanogeneratorsen
dc.subjectnanosensorsen
dc.titleBroad Bandwidth, Self-Powered Acoustic Sensor Created by Dynamic Near-Field Electrospinning of Suspended, Transparent Piezoelectric Nanofiber Mesh.en
dc.typeArticle
prism.endingPagee2000581
prism.publicationDate2020en
prism.publicationNameSmallen
prism.startingPagee2000581
dc.identifier.doi10.17863/CAM.54870
dcterms.dateAccepted2020-04-20en
rioxxterms.versionofrecord10.1002/smll.202000581en
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-06-08en
dc.contributor.orcidWang, Wenyu [0000-0001-6580-8236]
dc.contributor.orcidFathi, Saeed [0000-0002-5684-8807]
dc.contributor.orcidHuang, Shery [0000-0003-2619-730X]
dc.identifier.eissn1613-6829
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) ERC (758865)
pubs.funder-project-idEPSRC (EP/M018989/1)


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International