Integrating multiple sensing capabilities into a single multimodal sensor greatly enhances its applications for in situ sensing and structural health monitoring. However, the fabrication of multimodal sensors is complicated and limited by the available materials and existing manufacturing methods that often involve complicated and expensive fabrication processes. In this study, a high-temperature bimodal sensor is demonstrated by the aerosol jet printing (AJP) of gold and indium tin oxide nanoparticle inks. The printed bimodal sensor for concurrent strain and temperature sensing possesses a high gauge factor of 2.54 and thermopower of 55.64 μV/°C combined with excellent high-temperature thermal stability of up to 540 °C. Compared to traditional single-modality sensors, the printed bimodal sensor significantly increases the sensing capacity and improves spatial resolution using microscale printed patterns. The study also demonstrates that the strain sensor with an integrated thermocouple enables in situ compensation of the temperature effect on strain sensing, significantly improving strain measurement accuracy at high temperatures. By the combination of AJP with nanomaterial inks, a wide range of multifunctional devices can be developed for a broad range of emerging applications.

中文翻译：

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使用金和氧化铟锡纳米颗粒墨水气溶胶喷射打印高温双峰传感器，同时进行应变和温度传感

将多种传感功能集成到单个多模式传感器中大大增强了其在原位传感和结构健康监测方面的应用。然而，多模态传感器的制造很复杂，并且受到可用材料和现有制造方法的限制，这些制造方法通常涉及复杂且昂贵的制造工艺。在这项研究中，通过金和氧化铟锡纳米粒子墨水的气溶胶喷射印刷（AJP）演示了高温双峰传感器。用于同时进行应变和温度传感的印刷双峰传感器具有 2.54 的高应变系数和 55.64 μV/°C 的热电势，以及高达 540 °C 的出色高温热稳定性。与传统的单模态传感器相比，印刷双模态传感器使用微型印刷图案显着提高了传感能力并提高了空间分辨率。该研究还表明，带有集成热电偶的应变传感器能够就地补偿温度对应变传感的影响，显着提高高温下的应变测量精度。通过将 AJP 与纳米材料墨水相结合，可以开发出多种多功能设备，用于广泛的新兴应用。