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Cellulose nanofibril film as a piezoelectric sensor material |
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| Author: | Rajala, Satu1; Siponkoski, Tuomo2; Sarlin, Essi3; |
| Organizations: |
1Department of Automation Science and Engineering, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland 2Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4500, FI-90014 Oulu, Finland 3Department of Materials Science, Tampere University of Technology, P.O. Box 589, FI-33101 Tampere, Finland
4Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
5Department of Materials Science and Engineering, School of Chemical Technology, Aalto University, P.O. Box 11000, FI-00076 Aalto, Espoo, Finland |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 1.4 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe201706197374 |
| Language: | English |
| Published: |
American Chemical Society,
2016
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| Publish Date: | 2017-05-27 |
| Description: |
AbstractSelf-standing films (45 μm thick) of native cellulose nanofibrils (CNFs) were synthesized and characterized for their piezoelectric response. The surface and the microstructure of the films were evaluated with image-based analysis and scanning electron microscopy (SEM). The measured dielectric properties of the films at 1 kHz and 9.97 GHz indicated a relative permittivity of 3.47 and 3.38 and loss tangent tan δ of 0.011 and 0.071, respectively. The films were used as functional sensing layers in piezoelectric sensors with corresponding sensitivities of 4.7–6.4 pC/N in ambient conditions. This piezoelectric response is expected to increase remarkably upon film polarization resulting from the alignment of the cellulose crystalline regions in the film. The CNF sensor characteristics were compared with those of polyvinylidene fluoride (PVDF) as reference piezoelectric polymer. Overall, the results suggest that CNF is a suitable precursor material for disposable piezoelectric sensors, actuators, or energy generators with potential applications in the fields of electronics, sensors, and biomedical diagnostics. see all
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| Series: |
ACS applied materials & interfaces |
| ISSN: | 1944-8244 |
| ISSN-E: | 1944-8252 |
| ISSN-L: | 1944-8244 |
| Volume: | 8 |
| Issue: | 24 |
| Pages: | 15607 - 15614 |
| DOI: | 10.1021/acsami.6b03597 |
| OADOI: | https://oadoi.org/10.1021/acsami.6b03597 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
213 Electronic, automation and communications engineering, electronics |
| Subjects: | |
| Funding: |
The authors acknowledge funding from the Academy of Finland (Grants 137669, 258124, 264743, 267573, and 273663). Author T.S. appreciatively acknowledges the Riitta ja Jorma J. Takanen, KAUTE, Tauno Tönning, and Ulla Tuominen Foundations as well as Infotech Oulu Doctoral Program for
financial support. |
| Academy of Finland Grant Number: |
137669 258124 264743 267573 273663 |
| Detailed Information: |
137669 (Academy of Finland Funding decision) 258124 (Academy of Finland Funding decision) 264743 (Academy of Finland Funding decision) 267573 (Academy of Finland Funding decision) 273663 (Academy of Finland Funding decision) |
| Copyright information: |
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsami.6b03597 |