Flexible films possessing stable superhydrophobicity under external loading have great application potential in the emerging flexible electronics field. The effects of stretching and cyclic bending on superhydrophobicity and conductivity of the flexible films with wrinkled micro-nano hierarchical structures (W-FF) were investigated. Wrinkled micro-nano hierarchical structures were fabricated on a flexible film by pre-stretching, dipping and heating. Owing to that the interwoven network structures were always kept on the upper of the generated cracks and dendritic structures remained unchanged, the W-FF possessed stable superhydrophobicity and conductivity under stretching and cyclic bending. Effects of reaction time on the micro-nano hierarchical structures and superhydrophobicity were investigated. The formation mechanism of stable superhydrophobicity and conductivity of the W-FF under stretching and cyclic bending was studied by the characterization and comparison of the corresponding morphologies. The W-FF showed good motion sensing property when used as a real-time monitoring human motion sensor, such as monitoring facial muscle, wrist and finger movements. This superhydrophobic and conductive flexible film is expected to be applied in flexible electronics field.

中文翻译：

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具有皱纹微纳米分级结构的柔性薄膜在外部负载下具有稳定的超疏水性

在外部负载下具有稳定超疏水性的​​柔性薄膜在新兴的柔性电子领域具有巨大的应用潜力。研究了拉伸和循环弯曲对具有褶皱微纳米分层结构（W-FF）的柔性薄膜的超疏水性和导电性的影响。通过预拉伸、浸渍和加热在柔性薄膜上制造起皱的微纳米分层结构。由于交织的网络结构始终保持在产生的裂纹的上部，树枝状结构保持不变，W-FF在拉伸和循环弯曲下具有稳定的超疏水性和导电性。研究了反应时间对微纳分级结构和超疏水性的​​影响。通过对相应形貌的表征和比较，研究了W-FF在拉伸和循环弯曲下稳定超疏水性和导电性的形成机制。W-FF 在用作实时监测人体运动传感器时表现出良好的运动传感特性，例如监测面部肌肉、手腕和手指运动。这种超疏水导电柔性薄膜有望应用于柔性电子领域。