The pursuit of efficient and accurate human–computer interface design urgently requires high-performance sensors with pressure sensitivity, a wide detection range, and excellent cycling stability. Herein, a biomimetic honeycomb-like Ti₃C₂T_x MXene/bacterial cellulose (BC) aerogel with a negative Poisson’s ratio (ν = −0.14) synthesized from the bidirectional freeze-drying method is used as the active material for a flexible pressure sensor, which exhibits high sensitivity (20.14 kPa^–1), fast response time (100 ms), excellent mechanical durability (5000 cycles), and a low detection limit (responding to a grain of rice weighing about 0.022 g). Moreover, when assembled into the sandwich-structured bending sensor with the aerogel layer at just 0.8 mm in thickness, the aerogel-based device has a wide angular detection range (2.7–156.3°), high sensitivity (0.47 deg^–1), and good robustness, proving outstanding electromechanical performance. Significantly, a smart glove consisting of five bending sensors fixed to the proximal knuckles and a flexible circuit board as the signal processing unit was designed for the identification of the shape, demonstrating its promising applications in the field of human–computer interaction.

中文翻译：

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用于人机界面的仿生蜂窝状 Ti3C2Tx MXene/细菌纤维素气凝胶柔性压力传感器


追求高效、准确的人机界面设计迫切需要具有压力敏感性、检测范围广、循环稳定性优异的高性能传感器。在此，使用双向冷冻干燥法合成的具有负泊松比 （ν = -0.14） 的仿生蜂窝状 Ti₃C₂T_x MXene/细菌纤维素 （BC） 气凝胶作为柔性压力传感器的活性材料，该传感器具有高灵敏度 （20.14 kPa^–1）、快速响应时间 （100 ms）、优异的机械耐久性（5000 次循环）、 和低检测限（对一粒重约 0.022 g 的米做出反应）。此外，当组装到气凝胶层厚度仅为 0.8 mm 的夹层结构弯曲传感器中时，基于气凝胶的器件具有较宽的角度检测范围 （2.7–156.3°）、高灵敏度 （0.47 ^deg–1） 和良好的稳健性，证明了出色的机电性能。值得注意的是，一种智能手套由五个固定在近端指关节的弯曲传感器和一个作为信号处理单元的柔性电路板组成，用于识别形状，展示了其在人机交互领域的前景。