Abstract Mechanically stretchable sensors are responsive to multiple stimuli, such as strain and temperature, making it difficult to identify individual stimulus using a single senor. Herein, we present a hybrid sensor featuring dissimilar impedance frequency-responses under different stimuli. The sensor is made by infusing polydimethylsiloxane (PDMS) into an aerogel containing a hybrid of conductive materials consisting of PEDOT:PSS and reduced graphene oxide. Exhibiting positive and negative sensitivity to strain and temperature, respectively, this sensor makes it possible to determine both stimuli using an impedance method. By measuring the sensor's electrical impedance at two different frequencies, both strain and temperature can be readily determined using just one sensor. Test results under long-term cyclic loading confirm that the hybrid sensor also retains high sensitivity, stretchability, and cyclic stability. The new impedance method used in conjunction with the hybrid sensor enable simultaneous determination of multiple stimuli, such as strain and temperature.

中文翻译：

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通过混合还原氧化石墨烯和 PEDOT:PSS 的多模态应变和温度传感器

摘要 机械可拉伸传感器可响应多种刺激，例如应变和温度，因此很难使用单个传感器识别单个刺激。在此，我们提出了一种混合传感器，在不同的刺激下具有不同的阻抗频率响应。该传感器是通过将聚二甲基硅氧烷 (PDMS) 注入气凝胶中制成的，该气凝胶包含由 PEDOT:PSS 和还原氧化石墨烯组成的混合导电材料。该传感器分别对应变和温度表现出积极和消极的敏感性，可以使用阻抗方法确定这两种刺激。通过在两个不同频率下测量传感器的电阻抗，只需使用一个传感器即可轻松确定应变和温度。长期循环负载下的测试结果证实，混合传感器还保持高灵敏度、可拉伸性和循环稳定性。与混合传感器结合使用的新阻抗方法能够同时确定多种刺激，例如应变和温度。