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首页> 外文期刊>Advanced Functional Materials >High-Sensitivity, Skin-Attachable, and Stretchable Array of Thermo-Responsive Suspended Gate Field-Effect Transistors with Thermochromic Display
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High-Sensitivity, Skin-Attachable, and Stretchable Array of Thermo-Responsive Suspended Gate Field-Effect Transistors with Thermochromic Display

机译：具有热致变色显示的高灵敏度，皮肤可附着和可拉伸的热敏悬挂栅场效应晶体管阵列

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摘要

The fabrication of a skin-attachable, stretchable array of high-sensitivity temperature sensors is demonstrated. The temperature sensor consists of a single-walled carbon nanotube field-effect transistor with a suspended gate electrode of poly(N-isopropylacrylamide) (PNIPAM)-coated gold grid/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate and thermochromic leuco dye. The sensor exhibits a very high sensitivity of 6.5% degrees C-1 at temperatures between 25 and 45 degrees C. With increasing temperature, the suspended gate electrode bends due to the deswelling of the PNIPAM, resulting in the reduction of the air gap to increase the drain current under a constant gate voltage. At the same time, the leuco dye coated on top of the transparent gate electrode changes color to visualize changes in temperature. The 4 x 6 integrated temperature sensor array integrated using liquid metal interconnections exhibits mechanical and electrical stability under 50% biaxial stretching and allows for the spatial mapping of temperature with visual color display regardless of wrist movement while attached to the skin of the wrist. This work is expected to be widely useful in the development of skin-attachable electronics for medical and health-care monitoring.
机译：演示了皮肤可附着，可拉伸的高灵敏度温度传感器阵列的制造。温度传感器由单壁碳纳米管场效应晶体管组成，该晶体管具有由聚（N-异丙基丙烯酰胺）（PNIPAM）涂层的金栅/聚（3,4-乙撑二氧噻吩）聚苯乙烯磺酸盐和热致变色无色染料构成的悬挂栅电极。该传感器在25到45摄氏度之间的温度下具有6.5％的C-1的极高灵敏度。随着温度的升高，由于PNIPAM的溶胀，悬挂的栅电极会弯曲，从而导致气隙减小，从而增大在恒定栅极电压下的漏极电流。同时，涂在透明栅电极顶部的无色染料会改变颜色，以观察温度的变化。使用液态金属互连集成的4 x 6集成温度传感器阵列在50％双轴拉伸下表现出机械和电气稳定性，并且无论贴附在手腕皮肤上的手腕运动如何，都可以通过视觉彩色显示对温度进行空间映射。预期这项工作在开发用于医疗和保健监测的皮肤可连接电子设备方面将广泛有用。

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