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Poling techniques: (a) Direct-current electrode poling process. (b) Corona discharge poling process. (c) Alternating-current electrode poling process
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Piezoelectric materials play an essential role in the advancement of micro- and nanoelectronics equipment. The piezoelectric properties of the materials rely upon the degree of polarization that results from the poling mechanism. The present study put forward the improvement of piezoelectric performance by optimizing the poling parameters in piezoe...
Citations
... Electrical poling is a common approach to regulate a steady polarization of poled electric dipoles in an FE material. 51 However, it is not a user-friendly approach since it needs a high electric voltage (kV to MV order as per the sample thickness), which often leads to an electrical breakdown, damaging the films. 52,53 In contrast, self-poling (spin-charge control) of a polymer/ferrite ME composite is a simple strategy that can avoid the need for conventional electrical poling. ...
In view of the depletion of natural energy resources, harvesting energy from waste is a revolution to simultaneously capture, unite, and recycle various types of waste energies in flexible devices. Thus, in this work, a spin-charge-regulated pyro-magnetoelectric nanogenerator is devised at a well-known ferroelectric P(VDF-TrFE) copolymer. It promptly stores thermal-magnetic energies in a “capacitor” that generates electricity at room temperature. The ferroelectric domains are regulated to slip at the interfaces (also
twins) of duly promoting polarization and other properties. An excellent pyroelectric coefficient p ∼ 615 nC·m−2·K−1 is obtained, with duly enhanced stimuli of a thermal sensitivity ∼1.05 V·K−1, a magnetoelectric coefficient αme ∼8.8 mV·cm−1·Oe−1 at 180 Hz (resonance frequency), and a magneto-sensitivity ∼473 V/T. It is noteworthy that a strategy of further improving p (up to 41.2 μC·m−2·K−1) and αme (up to 23.6 mV·cm−1·Oe−1) is realized in the electrically poled dipoles. In a model hybrid structure, the spins lead to switch up the electric dipoles parallel at the polymer
chains in a cohesive charged layer. It is an innovative approach for efficiently scavenging waste energies from electric vehicles,
homes, and industries, where abundant thermal and magnetic energies are accessible. This sustainable strategy could be useful
in next-generation self-powered electronics.
... Postfabrication optimization techniques, such as electric poling, annealing, and crystal phase engineering, can be included in the fabrication process to improve the mechanoelectrical transduction features of polymeric piezoelectric nanostructures [28]. Electric poling, for example, is a method that requires the application of a strong electric field across the material, and promotes the formation of a permanent electric dipole moment thus increasing the piezoelectric properties of polymeric nanostructures. ...
Nano-sized piezoelectric materials allow for precise interaction with living systems to local deliver electrical cues. Recent innovations enhance their potential in tissue engineering and regenerative medicine.
... This is attributed to increased CNT agglomeration beyond 0.5 wt% CNT content. High filler accumulation within the matrix increases electronic conductivity which cancels out the applied electric field and reduces the electromechanical responsive ability of the composite [52,53]. ...
... The fault makeup of solid-state specimens plays an important role in these new potential applications. Understanding how desired characteristics interact with imperfections and vacancies on the site was important [18,19]. The co-substitution of La and Sn in varying ratios affects interior imperfections such as voids at A-and B-sites. ...
The structural ambiguity was resolved quantitatively with dual-phase models of Cc + P4mm. Multiple-phase transition behaviors including Antiferroelectric (AFE) to Ferroelectric transition, transition at depolarization temperature, and AFE to paraelectric state transition were observed among PLZST samples and investigated in detail. The piezoelectric and impedance features of a modified PZT ceramic that has different mole ratios of La and Sn co-substitution are shown here. The principle of Archimedes shows that the synthesized specimens have sufficient density for withstanding high temperatures and higher fields while explaining them. We concentrated on the impedance and piezoelectric coefficients d33, g33, and figure of merit (FOM) of the ideal PbLaZrSnTiO3 (PLZST) composition (50/30/20) in this study. The PLZSTs consist of two phases (Cc + P4mm), which combine to generate a single phase with a high Sn content and a low La content. These structural correlations coexist with the dual evaluation of impedance and piezoelectric characteristics in order to produce optimum composition. In order to evaluate the impedance features, the property of activation energy for the grains also supports the PLZST (50/30/20) having superior properties among PLZSTs. The optimum composition will meet the current business's commercial needs through multiple windows.
... Poling processes play a crucial role in optimizing the PVDF film sensor's performance. An important factor in this process are temperature, voltage, time, and poling type are critical parameters for -phase optimization [10,11]. While further research is needed to determine the optimal parameter values, poling is typically conducted at room temperature. ...
... process [41]. Simultaneous stretching and corona poling have also been adopted to make the process more efficient [44,46]. In this process, maximum piezoelectricity can be achieved at optimum condition of temperature of 80 °C, stretching ratio of 4.5 and poling field of 0.55 MV/cm [46]. ...
... Simultaneous stretching and corona poling have also been adopted to make the process more efficient [44,46]. In this process, maximum piezoelectricity can be achieved at optimum condition of temperature of 80 °C, stretching ratio of 4.5 and poling field of 0.55 MV/cm [46]. A more detailed discussion about the different types of poling process and parameters to optimize piezoelectric property/performance of piezoelectric materials/devices can be found in the recent review article by Dani et al. [47]. ...
This research article is related to a bismuth oxide‐layered pseudo‐perovskite ferroelectric material and its capabilities in the area of photocatalysis. SrBi 4 Ti 4 O 15 (SBT) catalyst was prepared via a solid‐state reaction followed by calcination at 950°C sustained over 4 h. X‐ray diffraction, X‐ray photoelectron spectroscopy, bandgap analysis, Raman spectroscopy, and scanning electron microscopy confirmed the successful synthesis of the SBT catalyst. The photocatalysis capability was checked on a methylene blue (MB) model dye. The poling of the SBT catalyst was performed under 2 kV/mm of electric field. The poling of the catalyst material played a crucial role in enhancing the photocatalytic activity. Moreover, the effect of volume ( k ( v )), initial concentration ( k ( i c )) of the MB dye, amount of catalyst ( k ( c )), and intensity ( k ( i )) of the light were examined and analyzed by the mathematical model. This study suggested that higher intensity and amount of catalyst enhance photocatalytic activity, whereas higher concentration and volume of dye suppress the photocatalytic activity. The amount of catalyst showed the highest effect on the photocatalytic activity. The rate constant is influenced by these factors and the order of influence is k ( c ) > k ( i ) > k ( v ) ≃ k ( i c ).
