Design, fabrication and characterization of composite piezoelectric ultrafine fibers for cochlear stimulation

Mota, Carlos; Labardi, M.; Trombi, Luisa; Astolfi, Laura; D’Acunto, Mario; Puppi, Dario; Gallone, Giuseppe; Chiellini, Emo; Berrettini, Stefano; Bruschini, Luca; Danti, Serena

doi:10.1016/j.matdes.2017.03.013

Cited by 64 publications

(70 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach has emerged as a new paradigm for the development of highenergy-density capacitors. Numerous studies have shown that the crystallization behaviour of the 9 polymer depends on specific interfacial interactions between the nucleating agents and polymer chains [45,[47][48][49][50][51]. Therefore, the nucleation effect of the nanofillers depends on the particle surface charge and surface area, concentration, dispersion, lattice matching, and processing conditions [47,52,53].…”

Section: Methods For the Improvement Of The Piezoelectric Response Ofmentioning

confidence: 99%

“…BT is a well-known dielectric ceramic with moderate piezoelectric coefficients (d 33 ) of 90 and 190 pC/N along the [001] and [111] directions of the perovskite cubic crystal [51]. BT is a promising nucleating filler for PVDF-based composites due to its easy preparation via a procedure that allows for the precise control of its chemical composition.…”

Section: Barium Titanate (Batio 3 Bt)mentioning

confidence: 99%

“…Other advantages include its high piezoelectric coefficient, scalable and low-cost processing, and biocompatibility as a lead-free material [49]. The improved dielectric and piezoelectric features of PVDF/BT nanocomposites have recently been demonstrated by a number of authors [49,51,55,73,74].…”

Section: Barium Titanate (Batio 3 Bt)mentioning

confidence: 99%

See 2 more Smart Citations

Hybrid lead-free polymer-based nanocomposites with improved piezoelectric response for biomedical energy-harvesting applications: A review

et al. 2019

View full text Add to dashboard Cite

Section: Methods For the Improvement Of The Piezoelectric Response Ofmentioning

confidence: 99%

Section: Barium Titanate (Batio 3 Bt)mentioning

confidence: 99%

See 1 more Smart Citation

Hybrid lead-free polymer-based nanocomposites with improved piezoelectric response for biomedical energy-harvesting applications: A review

et al. 2019

View full text Add to dashboard Cite

“…It should be noted that PVDF and PEG are FDA‐approved biomaterials for medical applications. Moreover, in recent years, many studies have proposed the use of carbon nanotubes and nanoceramics in medical devices, and even as PVDF‐based composites . Therefore, the present study and other studies are paving the way to future biomedical exploitation of this type of hybrid piezotransducers.…”

Section: Resultsmentioning

confidence: 99%

Surface‐Modified Nanostructured Piezoelectric Device as a Cost‐Effective Transducer for Energy and Biomedicine

et al. 2019

Self Cite

View full text Add to dashboard Cite

Flexible polymer–metal oxide nanocomposites with multiwalled carbon nanotube (MWCNT) films are fabricated using poly(vinylidene fluoride) (PVDF) as the bulk matrix material with three‐dimensional (3D) lithium‐doped zinc oxide (Li‐ZnO) as a filler. Li‐ZnO is synthesized hydrothermally followed by surface modification with polyethylene glycol (PEG). PEG coating serves as an effective solution for avoiding costly electrical poling and enhances the proportion of the PVDF β phase, while MWCNTs act to increase conductivity and to reinforce the composite during mechanical stressing. The piezoelectric composite is fabricated with 12 wt% surface‐modified Li‐ZnO with 0.2 wt% MWCNT relative to the bulk PVDF. The fabricated composite is tested with different body motions and in different environments. The highest obtained value of open circuit voltage is 10.1 V and 2740 µA amperometric alternating current with bending motions. It is also observed that the electrical signal fluctuates by ≈200 µA due to microrelaxation and microstressing under constant stress conditions. The piezoelectric nanocomposite shows a linear response to a gradual increase in normal stress.

show abstract

“…Then a three-dimensional image is built by stacking a large series of axial slice and carried out for calculating solid fraction ( SF ). The porosity is then calculated via the following equation [124];…”

Section: Characterization Of Ceramic Electrospun Matsmentioning

confidence: 99%

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

2017

View full text Add to dashboard Cite

Ceramic nanofibers (NFs) have recently been developed for advanced applications due to their unique properties. In this article, we review developments in electrospun ceramic NFs with regard to their fabrication process, properties, and applications. We find that surface activity of electrospun ceramic NFs is improved by post pyrolysis, hydrothermal, and carbothermal processes. Also, when combined with another surface modification methods, electrospun ceramic NFs result in the advancement of properties and widening of the application domains. With the decrease in diameter and length of a fiber, many properties of fibrous materials are modified; characteristics of such ceramic NFs are different from their wide and long (bulk) counterparts. In this article, electrospun ceramic NFs are reviewed with an emphasis on their applications as catalysts, membranes, sensors, biomaterials, fuel cells, batteries, supercapacitors, energy harvesting systems, electric and magnetic parts, conductive wires, and wearable electronic textiles. Furthermore, properties of ceramic nanofibers, which enable the above applications, and techniques to characterize them are briefly outlined.

show abstract

Design, fabrication and characterization of composite piezoelectric ultrafine fibers for cochlear stimulation

Cited by 64 publications

References 55 publications

Hybrid lead-free polymer-based nanocomposites with improved piezoelectric response for biomedical energy-harvesting applications: A review

Hybrid lead-free polymer-based nanocomposites with improved piezoelectric response for biomedical energy-harvesting applications: A review

Surface‐Modified Nanostructured Piezoelectric Device as a Cost‐Effective Transducer for Energy and Biomedicine

Electrospun Ceramic Nanofiber Mats Today: Synthesis, Properties, and Applications

Contact Info

Product

Resources

About