Corrigendum to “High pyroelectric effect in poly(vinylidene fluoride) composites cooperated with diamond nanoparticles” [Mater. Lett. 267 (2020) 127514]

Li, Wenru; An, Zhu; Lin, Ying-Hsi; Liu, Pin; Shen, Meng; Zhou, Licheng; Liu, Huan; Yuan, Jiale; Qin, Shuang; Zhang, Xu; Yang, Nuo; Jiang, Shenglin; Zhang, Guangzu

doi:10.1016/j.matlet.2020.128936

Cited by 1 publication

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“…[12,13] However, this material is chemically inert and non-biodegradable, even if it needs to be polarized after stretching which reduces the scope of PVDF in many applications. [14,15] The poly-l-lactic acid (PLLA) is another promising flexible piezoelectric polymer with chiral carbon atoms and a helical molecular chain, [16,17] the dipole (C=O) in the chain can be changed under the action of external force (stretching or compression), [18] thus a current is generated with a shear piezoelectric effect. [19] Stretching can enhance the piezoelectricity of PLLA, the piezoelectric coefficient increases with the stretching ratio and reaches a maximum value when the stretching ratio is ≈4-5.…”

Section: Introductionmentioning

confidence: 99%

Skin‐Adhesive Flexible Force Sensors Based on Piezoelectric Poly(l‐lactic acid) for Human Behavior Recognition

Lin

Zhu

et al. 2023

Adv Materials Technologies

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The application of biodegradable films based on the piezoelectric effect of poly-l-lactic acid (PLLA) in sensors, transducers, actuators, and so on has gradually become one of the emerging research focuses. In this work, a flexible PLLA sensor with UV-curable acrylate film packaging is proposed for human behavior recognition. The acrylic films with different proportions have different mechanical and surface properties, showing good flexibility, ductility, and skin adhesion. The morphology and crystal structure of the PLLA films and UV curable substrate obtained under the various postprocessing conditions and different proportions are examined by scanning electron microscopy, X-ray diffraction, Raman, and ATR-FTIR spectroscopy. In addition, by comparing six groups of PLLA films with different treatment conditions, the device made on film stretched four times and annealed for 8 h has the best performance. This sensor has good response ability to impact, vibration, and bending strain, and can be applied to human behavior recognition, such as touch, wrist bending, and swallowing.

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