Direct stamping and capillary flow patterning of solution processable piezoelectric polyvinylidene fluoride films
Direct stamping and capillary flow patterning of solution processable piezoelectric polyvinylidene fluoride films
复制标题
DOI：
10.1016/j.polymer.2013.07.062
复制
发表时间：
2013-09
期刊：
影响因子：
4.6
通讯作者：
W. Ong;C. Ke;P. Lim;Amit Kumar;K. Zeng;G. Ho
中科院分区：
文献类型：
--
作者：
W. Ong;C. Ke;P. Lim;Amit Kumar;K. Zeng;G. Ho
众所周知，聚偏氟乙烯的潜在应用主要来源于其极性β相的压电性和铁电性。因此，我们研究了不同的制备条件，即蒸发温度、溶剂类型和添加剂对增强聚偏氟乙烯薄膜β晶体结构的影响。随后，采用简单直接的软光刻技术、直接冲压和毛细管流技术证明了PVDF薄膜具有良好的图形转移能力。用压电响应力显微镜(PFM)表征了微结构的压电性，在不需要进一步处理的情况下，即可获得较好的压电性，即不需要进一步的热处理或施加压力/电场。因此，我们的溶液可加工和PVDF技术的直接图案化技术为制造具有改进的压电功能的隔离微结构阵列提供了简便和有希望的途径。
It is well known that the potential applications of polyvinylidene fluoride (PVDF) mainly come from the piezoelectricity and ferroelectricity of its polar β phase. Thus, we have investigated the effect of different preparation conditions namely evaporation temperature, type of solvent and additive to enhance the β crystal structures of PVDF thin film. Subsequently, facile and direct soft lithography technique; direct stamping and capillary flow were employed to demonstrate good pattern transfer of PVDF thin films. The piezoelectricity of the microstructure was characterized using piezoresponse force microscopy (PFM) where fairly good piezoresponse was obtained without further processing procedures i.e., annealing or applied pressure/electric field. As such, our solution processable and direct patterning of PVDF techniques offer facile and promising route to produce arrays of isolated microstructures with improved piezoelectric functionality.