Electrical behaviour of yttrium-doped potassium sodium niobate thin film for piezoelectric energy harvester applications

Hatta, Maziati Akmal Mohd; Warikh, A.R.M.

doi:10.1007/s41779-021-00569-2

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Therefore, it is confirmed in this study that chitosan was successfully extracted from Aspergillus oryzae since fungal chitosan did not exhibit microfibrillar structure. In addition, a uniform surface morphology of fungal chitosan could improve dipole-dipole interactions, hence, hence boosting the thin film's piezoelectricity (Akmal & Warikh 2021)…”

Section: Surface Morphology Of Fabricated Chitosan Thin Filmmentioning

confidence: 99%

Piezoelectric Performance of Microbial Chitosan Thin Film Derived from Aspergillus oryzae

Zamli

Hatta

Niazi

et al. 2022

Int. J. Renew. Energy Dev.

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In this study, chitosan thin film derived from Aspergillus oryzae cell walls was fabricated and characterised. First, the chitosan from the fungal biomass was extracted (0.18 g/g) with 52.25% of degree of deacetylation obtained through Fourier transform infrared (FTIR) spectroscopy. Subsequently, several parameters of the chitosan thin film fabrication were optimised, including chitosan solution volume and drying temperature. Resultantly, the highest mechanical quality factor (3.22±0.012), the lowest dissipation factor (0.327±0.0003) and the best tensile strength (13.35±0.045 MPa) were obtained when pure chitosan was dissolved in 35 ml of 0.25 M formic acid and dried at 60 ˚C. In addition, the scanning electron microscopy (SEM) analysis presented a fine chitosan agglomerate distributed in the formic acid. The optimised fabricated, fungal-derived chitosan thin film was validated, recording a mechanical quality factor of 3.68 and dissipation factor of 0.248; both values were comparable to the synthetic polymer, polyvinylidene fluoride (PVDF) thin film. Thus, fungal-derived chitosan thin film can potentially be used as a piezoelectric material.

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Section: Surface Morphology Of Fabricated Chitosan Thin Filmmentioning

confidence: 99%

Piezoelectric Performance of Microbial Chitosan Thin Film Derived from Aspergillus oryzae

Zamli

Hatta

Niazi

et al. 2022

Int. J. Renew. Energy Dev.

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Study on Properties of Potassium Sodium Niobate Coating Prepared by High Efficiency Supersonic Plasma Spraying

Zhou

He³

et al. 2022

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In order to realize the construction of environmentally friendly potassium sodium niobate ceramic coating on metal surface, potassium sodium niobate ceramic coating was prepared by supersonic plasma spraying technology. The morphology, element extension and phase structure of such coating were investigated. The dielectric and ferroelectric properties were also analyzed. The results show that the coating has good quality and tetragonal phase structure. When test frequency ≥ 2 MHz, the dielectric constant is stable at about 300, and also dielectric loss is stable at about 0.05. The coating exhibits good hysteresis loops under different applied electric fields. When the applied electric field is 16 KV/cm, residual polarization value of as-prepared coating reaches 17.02 μC·cm−2.

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Potassium sodium niobate (KNN) lead-free piezoceramics: A review of phase boundary engineering based on KNN materials

Piah,

Rashid,

Al-Amani Azlan

et al. 2023

AIMSMATES

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<abstract> <p>Lead zirconia titanate (PZT) is the most often used piezoelectric material in various electronic applications like energy harvesters, ultrasonic capacitors and motors. It is true that PZT has a lot of significant drawbacks due to its 60% lead content, despite its outstanding ferroelectric, dielectric and piezoelectric properties which influenced by PZT's morphotropic phase boundary. The recently found potassium sodium niobate (KNN) is one of the most promising candidates for a new lead-free piezoelectric material. For the purpose of providing a resource and shedding light on the future, this paper provides a summary of the historical development of different phase boundaries in KNN materials and provides some guidance on how to achieve piezoelectric activity on par with PZT through a thorough examination and critical analysis of relevant articles by providing insight and perspective of KNN, which consists of detailed evaluation of the design, construction of phase boundaries and engineering for applications.</p> </abstract>

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Electrical behaviour of yttrium-doped potassium sodium niobate thin film for piezoelectric energy harvester applications

Abstract: This study evaluates how the electrical characteristics of potassium sodium niobate, K Na NbO (KNN) thin film, are affected by yttrium doping. For the KNN thin films doped with yttrium, the secondary phase was not observed, which means that the films preserved the orthorhombic lattice.

Cited by 3 publications

References 29 publications

Piezoelectric Performance of Microbial Chitosan Thin Film Derived from Aspergillus oryzae

Piezoelectric Performance of Microbial Chitosan Thin Film Derived from Aspergillus oryzae

Study on Properties of Potassium Sodium Niobate Coating Prepared by High Efficiency Supersonic Plasma Spraying

Potassium sodium niobate (KNN) lead-free piezoceramics: A review of phase boundary engineering based on KNN materials

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