| Jan 20, 2025 |
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(Nanowerk News) Professor Bonghoon Kim from the Department of Robotics and Mechatronics Engineering at the Daegu Gyeongbuk Institute of Science & Technology (DGIST) has successfully developed a groundbreaking multifunctional sensor that mimics the five human senses. This innovative achievement, a collaborative effort with Professor Sangwook Kim at KAIST, Professor Janghwan Kim at Ajou University, and Professor Jiwoong Kim at Soongsil University, is poised to advance state-of-the-art technologies, including wearables, Internet of Things (IoT) devices, electronic systems, and soft robotics.
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The findings are published in Advanced Fiber Materials (“2D MoS2 Helical Liquid Crystalline Fibers for Multifunctional Wearable Sensors”).
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The research team’s sensor, crafted from semiconductor fibers, represents a significant leap beyond conventional one-dimensional fiber sensors. Thanks to its unique structural design, the sensor can sensitively respond to changes in the external environment and simultaneously measure and monitor multiple variables such as light, chemicals, pressure, and environmental data. These include pH levels, ammonia (NH3) concentrations, and mechanical strain. The team’s approach introduces a versatile platform capable of detecting and processing diverse signals in a manner akin to the integrated functioning of the human senses.
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Central to the study is the development of fibers capable of adjusting freely in three-dimensional shapes, achieved through a specialized fabrication process utilizing molybdenum disulfide (MoS2). The fibers naturally form a spiral structure during alignment into ribbon shapes, enabling precise control over their curvature. This innovative structure, combined with the exceptional electro-mechanical properties of MoS2, results in fibers with superior performance and versatility in sensing a broad spectrum of environmental data.
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“This study significantly broadens the application scope of two-dimensional nanomaterials like molybdenum disulfide,” remarked Professor Kim. “We will continue exploring diverse materials and advancing technologies that enable precise signal measurements essential for wearable applications.”
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