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首页> 外文期刊>Nanotechnology >Electroactive beta-crystalline phase inclusion and photoluminescence response of a heat-controlled spin-coated PVDF/TiO2 free-standing nanocomposite film for a nanogenerator and an active nanosensor
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Electroactive beta-crystalline phase inclusion and photoluminescence response of a heat-controlled spin-coated PVDF/TiO2 free-standing nanocomposite film for a nanogenerator and an active nanosensor

机译：用于纳米液和活性纳米传感器的热控旋涂合物PVDF / TiO2独立纳米复合膜的电活性β结晶相夹杂物和光致发光响应

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摘要

The electroactive beta-phase is most desirable due to its highest piezo-, pyro- and ferroelectric properties in poly(vinylidene fluoride) (PVDF). Induction of the beta-phase is successfully accomplished in titanium dioxide (TiO2) nanoparticles (NPs) doped spin-coated PVDF nanocomposite (PNC) films. The optimized yields of beta-phase and homogeneous ultra-smooth free-standing PNC film is utilized in a mechanical-energy harvesting application by fabricating a nanogenerator (NG) where the typical electrical poling step is not undertaken. Under a repeated human finger touch and release process, it delivers an open-circuit voltage of 5 V. Moreover, the physical sensing capabilities of the NG are examined through harvesting mechanical energy from mouse clicking of a laptop and wrist pulse detection, which indicates that it can also be used as a nanosensor. The blue photoluminescence centred at 444 nm, which was also observed in PNC films, makes us anticipate a new type of photonic application where the design feasibility of hybrid sensors, i.e. electromechanical and photonic combination, is also possible.
机译：由于其在聚（偏二氟乙烯）（PVDF）中的最高压电，辉根和铁电特性，电活性β相是最理想的。在二氧化钛（TiO 2）纳米颗粒（NPS）掺杂的旋涂的PVDF纳米复合材料（PNC）膜中成功地完成了β相的诱导。通过制造不进行典型的电动抛光步骤的纳米电磁体（NG），利用了β相和均相超光滑独立式PNC膜的优化产率。在重复的人手指触摸和释放过程中，它提供了5 V的开路电压。此外，通过从鼠标点击的笔记本电脑和手腕脉冲检测来检查NG的物理感测能力，这表明了这一点它也可以用作纳米传感器。在PNC薄膜中观察到的444nm处的蓝色光致发光使我们预测了一种新型的光子应用，其中混合传感器的设计可行性，即机电和光子组合也是可能的。

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