Characterization of single polyvinylidene fluoride (PVDF) nanofiber for flow sensing applications

Sengupta, D; Kottapalli, AGP; Chen, SH; Miao, JM; Kwok, CY; Triantafyllou, MS; Warkiani, ME; Asadnia, M

Characterization of single polyvinylidene fluoride (PVDF) nanofiber for flow sensing applications

Sengupta, D Kottapalli, AGP Chen, SH Miao, JM Kwok, CY Triantafyllou, MS Warkiani, ME

Asadnia, M

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Publication Type:: Journal Article
Citation:: AIP Advances, 2017, 7 (10)
Issue Date:: 2017-10-01

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Field	Value	Language
dc.contributor.author	Sengupta, D	en_US
dc.contributor.author	Kottapalli, AGP	en_US
dc.contributor.author	Chen, SH	en_US
dc.contributor.author	Miao, JM	en_US
dc.contributor.author	Kwok, CY	en_US
dc.contributor.author	Triantafyllou, MS	en_US
dc.contributor.author	Warkiani, ME https://orcid.org/0000-0002-4184-1944	en_US
dc.contributor.author	Asadnia, M	en_US
dc.date.issued	2017-10-01	en_US
dc.identifier.citation	AIP Advances, 2017, 7 (10)	en_US
dc.identifier.uri	http://hdl.handle.net/10453/126779
dc.description.abstract	© 2017 Author(s). The use of Polyvinylidene Fluoride (PVDF) based piezoelectric nanofibers for sensing and actuation has been reported widely in the past. However, in most cases, PVDF piezoelectric nanofiber mats have been used for sensing applications. This work fundamentally characterizes a single electrospun PVDF nanofiber and demonstrates its application as a sensing element for nanoelectromechanical sensors (NEMS). PVDF nanofiber mats were spun by far field electrospinning (FFES) process and complete material characterization was conducted by means of scanning electron microscope (SEM) imaging, Raman Spectroscopy and FTIR spectroscopy. An optimized recipe was developed for spinning a single suspended nanofiber on a specially designed MEMS substrate which allows the nano-mechanical and electrical characterization of a single PVDF nanofiber. Electrical characterization is conducted using a single suspended nanofiber to determine the piezoelectric coefficient (d33) of the nanofiber to be -58.77 pm/V. Also the mechanical characterization conducted using a nanoindenter revealed a Young's Modulus and hardness of 2.2 GPa and 0.1 GPa respectively. Finally, an application that utilizes the single PVDF nanofiber as a sensing element to form a NEMS flow sensor is demonstrated. The single nanofiber flow sensor is tested in presence of various oscillatory flow conditions.	en_US
dc.relation.ispartof	AIP Advances	en_US
dc.relation.isbasedon	10.1063/1.4994968	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Characterization of single polyvinylidene fluoride (PVDF) nanofiber for flow sensing applications	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	7	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	0206 Quantum Physics	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	open_access	*
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	7	en_US

Abstract:

© 2017 Author(s). The use of Polyvinylidene Fluoride (PVDF) based piezoelectric nanofibers for sensing and actuation has been reported widely in the past. However, in most cases, PVDF piezoelectric nanofiber mats have been used for sensing applications. This work fundamentally characterizes a single electrospun PVDF nanofiber and demonstrates its application as a sensing element for nanoelectromechanical sensors (NEMS). PVDF nanofiber mats were spun by far field electrospinning (FFES) process and complete material characterization was conducted by means of scanning electron microscope (SEM) imaging, Raman Spectroscopy and FTIR spectroscopy. An optimized recipe was developed for spinning a single suspended nanofiber on a specially designed MEMS substrate which allows the nano-mechanical and electrical characterization of a single PVDF nanofiber. Electrical characterization is conducted using a single suspended nanofiber to determine the piezoelectric coefficient (d33) of the nanofiber to be -58.77 pm/V. Also the mechanical characterization conducted using a nanoindenter revealed a Young's Modulus and hardness of 2.2 GPa and 0.1 GPa respectively. Finally, an application that utilizes the single PVDF nanofiber as a sensing element to form a NEMS flow sensor is demonstrated. The single nanofiber flow sensor is tested in presence of various oscillatory flow conditions.

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http://hdl.handle.net/10453/126779