4.8 Review

Field effect transistor-based tactile sensors: From sensor configurations to advanced applications

期刊

INFOMAT
卷 5, 期 1, 页码 -

出版社

WILEY
DOI: 10.1002/inf2.12376

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field-effect transistor; flexible electronics; tactile matrix sensor array; tactile sensors

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In the past several decades, high-performance field effect transistors (FETs) have made great progress and become an important component in the field of electronics. They have also attracted attention as tactile sensors for flexible wearable devices, artificial intelligence, and the Internet of Things. FETs have a unique three-terminal structure, enabling them to detect external mechanics through different sensing mechanisms. This review classifies and summarizes structure-optimized FET tactile sensors and discusses their working principles and state-of-the-art protocols. The innovative pixel distribution and integration analysis of transistor sensor matrix arrays for flexible electronics are also introduced.
The past several decades have witnessed great progress in high-performance field effect transistors (FET) as one of the most important electronic components. At the same time, due to their intrinsic advantages, such as multiparameter accessibility, excellent electric signal amplification function, and ease of large-scale manufacturing, FET as tactile sensors for flexible wearable devices, artificial intelligence, Internet of Things, and other fields to perceive external stimuli has also attracted great attention and become a significant field of general concern. More importantly, FET has a unique three-terminal structure, which enables its different components to detect external mechanics through different sensing mechanisms. On one hand, it provides an important platform to shed deep insights into the underlying mechanisms of the tactile sensors. On the other hand, these properties could in turn endow excellent components for the construction of tactile matrix sensor arrays with high quality. With special emphasis on the configuration of FETs, this review classified and summarized structure-optimized FET tactile sensors with gate, dielectric layer, semiconductor layer, and source/drain electrodes as sensing active components, respectively. The working principles and the state-of-the-art protocols in terms of high-performance tactile sensors are detail discussed and highlighted, the innovative pixel distribution and integration analysis of the transistor sensor matrix array concerning flexible electronics are also introduced. We hope that the introduction of this review can provide some inspiration for future researchers to design and fabricate high-performance FET-based tactile sensor chips for flexible electronics and other fields.

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