Patterning functional materials into well‐defined microstructures has drawn increasing attention in material science, bioengineering, surface engineering, nanotechnology, and especially in device processing. Here, a simple versatile route is developed to fabricate hierarchical surface patterns on conducting polymer films in solution via a combination of surface wrinkling and ultrasonic cleaning. Heterogeneous surface architectures (e.g., wrinkles/delaminating buckles) are first obtained owing to in situ self‐wrinkling during the solution‐phase growth of polyaniline (PANI) film on a selectively oxygen plasma‐exposed polydimethylsiloxane (PDMS) substrate. Subsequent ultrasonic cleaning is introduced to selectively remove the patterned PANI film that is deposited in the exposed PDMS region, based on the different adhesion strength of the patterned film with the exposed and unexposed PDMS regions. As a result, corresponding hierarchically patterned PANI films with controlled microstructures, spatial locations, and dimensions are obtained. Combined with the additional self‐reinforcement effect by polymerization of polymerizable monomers into the patterned PANI film, well‐defined stabilized patterns of PANI‐based composite films are further fabricated, which have great potential for the applications in micro‐supercapacitors and integrated pressure sensor arrays with excellent performances, as demonstrated here.

中文翻译：

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自皱和超声波清洗的协同作用，以制造分层图案化的导电膜

将功能材料图案化为定义明确的微结构已在材料科学，生物工程，表面工程，纳米技术，尤其是器件加工领域引起了越来越多的关注。在这里，开发了一种简单的通用途径，通过表面起皱和超声清洗相结合，在溶液中的导电聚合物膜上制造出分层的表面图案。由于聚苯胺（PANI）膜在选择性氧等离子体暴露的聚二甲基硅氧烷（PDMS）基底上的固溶相生长过程中原位自起皱，因此首先获得了异质的表面结构（例如，皱纹/分层褶皱）。引入随后的超声波清洗以选择性去除沉积在暴露的PDMS区域中的图案化PANI膜，基于图案化膜具有暴露的PDMS区域和未暴露的PDMS区域的不同粘附强度。结果，获得具有受控的微结构，空间位置和尺寸的相应的分层图案化的PANI膜。结合可聚合单体聚合到图案化的PANI膜中产生的附加自增强效应，可以进一步制造出清晰定义的PANI基复合膜稳定图案，在微超级电容器和集成压力传感器阵列中具有广阔的应用潜力表现出色，如此处所示。