Enhancing dielectric and piezoelectric properties of micro-ZnO/PDMS composite-based dielectrophoresis

Zhang, Xiaoting; Le, Minh‐Quyen; Zahhaf, Omar; Capsal, Jean‐Fabien; Cottinet, Pierre‐Jean; Petit, Lionel

doi:10.1016/j.matdes.2020.108783

Cited by 57 publications

(58 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a structured composite, the poling plateau is reached at a lower electric field: the disposition of the phases in the 1–3 structure induces a higher local electric field on the particles. [ 47 ] Interestingly, by applying a much lower poling field (i.e., greater than five times lower), our 1–3 composite achieves a similar piezoelectric coefficient as the classical ferroelectric polymers, which usually require an applied electric field of higher than 100 V μm −1 .…”

Section: Resultsmentioning

confidence: 95%

“…Moreover, a disposition of the piezoelectric phase in parallel columns allows more effective distribution of the electric field within the composite, leading to higher electric field within the particle as opposed to the case of 0–3 distribution. [ 47 ] For this reason, 1–3 structured composite requires lower poling field than 0–3‐type. [ 17,33,36,48 ] In the 1–3 structure achieved by dielectrophoresis, particles are not in contact, as, among them, there is a small portion of polymer matrix.…”

Section: Connectivity Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Micro‐Structuration of Piezoelectric Composites Using Dielectrophoresis: Toward Application in Condition Monitoring of Bearings

D'Ambrogio

Zahhaf

Hebrard³

et al. 2020

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Piezoelectric soft material based on inorganic/organic composites suitable for aerospace and aeronautical monitoring sensors is fabricated. The designed material is a piezoelectric composite made of lead zirconate titanate (PZT) filler embedded in a poly(dimethyl siloxane) (PDMS) matrix. To improve the piezoelectric properties of the film, the connectivity of the ceramic filler is increased via electric field‐assisted structuration, which leads to columnar arrangement of the filler across the thickness. This structure (1–3) shows higher piezoelectricity than one with randomly dispersed filler (0–3). Piezoelectric and dielectric activities of PZT/PDMS in 0–3 and 1–3 configurations at different volume fractions are compared. The results confirm that the 1–3 connectivity leads to superior piezoelectric behavior. Thermal stability of electroactive properties and high temperature X‐ray diffraction (XRD) analyses are performed: the composites maintain a good piezoelectric response, even at 200 °C. Following a process optimization, the piezoelectric behavior of this new class of composites approaches the fluorinated ferroelectric polymers one, with the advantages of piezoelectric properties stability preserved at a higher temperature and a lower poling electric field. In conclusion, there is potential for the integration of the designed sensor in aircraft ball bearings for condition monitoring.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Connectivity Modelsmentioning

confidence: 99%

Micro‐Structuration of Piezoelectric Composites Using Dielectrophoresis: Toward Application in Condition Monitoring of Bearings

D'Ambrogio

Zahhaf

Hebrard³

et al. 2020

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

show abstract

“…All the above results allow us to confirm that the dielectric constant of composites was clearly modified from 3.37 to 6.75 by modulating the ZnO coverage in the ZnO/PDMS composite. [25] and ZnO [26].…”

Section: Resultsmentioning

confidence: 99%

“…(b): Dielectric constant of the ZnO/PDMS composites. The data of 100% ZnO coverage and 0% ZnO coverage (fully covered by PDMS) were extracted from the literature: PDMS[25] and ZnO[26].…”

mentioning

confidence: 99%

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Amangeldinova

Aben

et al. 2021

Micromachines

View full text Add to dashboard Cite

Structural optimizations of the piezoelectric layer in nanogenerators have been predicted to enhance the output performance in terms of the figure of merit. Here, we report the effect of dielectric constant on electrical outputs of piezoelectric nanogenerator using ZnO/PDMS composites with varied ZnO coverages. The dielectric constant of piezoelectric layers was adjusted from 3.37 to 6.75. The electrical output voltage of 9 mV was achieved in the nanogenerator containing the ZnO/PDMS composite with the dielectric constant of 3.46, which is an 11.3-fold enhancement compared to the value of the nanogenerator featuring the composite with high dielectric constants. Significantly, lowering the dielectric constant of the piezoelectric layer improves the electrical output performance of piezoelectric nanogenerators.

show abstract

“…Zinc oxide is a commercially important material used in solar cells [2], rubber [3], sensors [4], varistors [5], etc. and exhibiting many significant properties such as piezoelectricity [6], catalysis [7] and novel optical properties [8].…”

Section: Introductionmentioning

confidence: 99%

Room Temperature Synthesis of Nanostructured ZnO: Active Visible Photocatalyst in the Degradation of Methylene Blue

Farrouji¹,

Tchalala²,

Eddine

et al. 2021

CSIJ

View full text Add to dashboard Cite

Nanostructured ZnO was prepared using a facile solution-phase method at room temperature without need to calcination. Oxidation of zinc sulfate by sodium hypochlorite in the presence of polyethylene glycol (PEG) and sodium hydroxide (NaOH) gave pure nanostructured zinc oxide (ZnO-NPs). The structure and physicochemical properties of the material were determined by X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (IR), Energy Dispersive X-ray Spectroscopy (EDS), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), UV–Vis diffuse reflectance and their optical Properties. ZnO particles were successfully distributed in two-dimensional sheet with a nanometric thickness and a random distribution. The activity was evaluated for photocatalytic degradation of methylene blue (MB) by a study of experimental conditions such as the effect of the mass of the catalyst, the effect of the initial concentration of the dye and the effect of the volume of the oxidizing agent. The kinetics of the reaction follow a pseudo-first order.

show abstract

Enhancing dielectric and piezoelectric properties of micro-ZnO/PDMS composite-based dielectrophoresis

Cited by 57 publications

References 68 publications

Micro‐Structuration of Piezoelectric Composites Using Dielectrophoresis: Toward Application in Condition Monitoring of Bearings

Micro‐Structuration of Piezoelectric Composites Using Dielectrophoresis: Toward Application in Condition Monitoring of Bearings

Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite

Room Temperature Synthesis of Nanostructured ZnO: Active Visible Photocatalyst in the Degradation of Methylene Blue

Contact Info

Product

Resources

About