Touch sensors with human-like tactile perception substantially expand the human’s interactive control capabilities,but still face challenges such as the need for external power sources,complex structures,multiple int...Touch sensors with human-like tactile perception substantially expand the human’s interactive control capabilities,but still face challenges such as the need for external power sources,complex structures,multiple interfaces and signal crosstalk.We propose a body-coupled touch sensing mechanism that utilizes the power frequency electric field in the environment as the energy source,and develop a body-coupled bioinspired touch sensor that requires only two electrodes.The device integrates multiple touch states sensing,recognition and transmission functions through the rational design of gradient resistive elements,exhibiting excellent performance of ultra-low detection threshold(≤0.02 N),fast response(~10 ms)and ultra-durability(>300,000 cycles),and has been successfully applied to piano playing,robot control and unmanned aerial vehicle(UAV)control.The research presented in this paper opens a new path for the future development of interactive electronic technology.展开更多
Flexible ionotronic devices have great potential to revolutionize epidermal electronics.However,the lack of breathability in most ionotronic devices is a significance barrier to practical application.Herein,a breathab...Flexible ionotronic devices have great potential to revolutionize epidermal electronics.However,the lack of breathability in most ionotronic devices is a significance barrier to practical application.Herein,a breathable kirigami-shaped ionotronic e-textile with two functions of sensing(touch and strain)is designed,by integrating silk fabric and kirigami-shaped ionic hydrogel.The kirigami-shaped ionic hydrogel,combined with fluffy silk fabric,allows the ionotronic e-textile to achieve excellent breathability and comfortability.Furthermore,the fabricated ionotronic e-textile can precisely perform the function of touch sensing and strain perception.For touch-sensing,the ionotronic e-textile can detect the position of finger touching point with a fast response time(3 ms)based on the interruption of the ion field.For strain sensing,large workable strain range(>100%),inconspicuous drift(<0.78%)and long-term stability(>10,000 cycles)is demonstrated.On the proof of concept,a fabric keyboard and game controlling sleeve have been designed to display touch and strain sensing functions.The ionotronic e-textile break through the bottlenecks of traditional wearable ionotronic devices,suggesting a great promising application in future wearable epidermal electronics.展开更多
In this study, we propose a sedimentation-driven fabrication process of a single-layered seamless touch position sensor based on the transformation of a sol-state precursor into a bifunctional composite using a carbon...In this study, we propose a sedimentation-driven fabrication process of a single-layered seamless touch position sensor based on the transformation of a sol-state precursor into a bifunctional composite using a carbon nanomaterial-incorporated silicone elastomer. The proposed fabrication method is based on the spontaneous gravitational sedimentation effect without additional post-processing. The concentration of the carbon nanomaterials in each part can be controlled by the main process parameters, such as the temperature and composition ratio. The developed touch position sensor, called a Bifunctional composite-based Single-layered seamless Triboelectric touch position sensor (BST sensor), includes dielectric and conductive parts in a single layer, and generates an electrical signal in response to external mechanical stimuli by a self-powered mechanism. The electrical output signal is measured differently depending on the distance from the touch position to the measurement position, and therefore, the seamless touch position sensing can be realized without an array of multiple sensor units. Moreover, the BST sensor allows the sensing surface to be discretized into on-demand resolutions and patterns. The sensing accuracy is 98.52% when a deep learning-based signal processing is used. Various BST sensors with flexible resolutions and patterns are introduced, and their application strategies are suggested as proof-of-concept demonstrations.展开更多
基金supported by the National Excellent Natural Science Foundation of China(No.52122503)the Yanzhao’s Young Scientist Project(No.2023203258)+7 种基金the National Natural Science Foundation of China(Nos.51975506,52122503,52475071,and 52305308)the Hebei Natural Science Foundation(Nos.E2022203002 and E2024203067)the Science Research Project of Hebei Education Department(No.QN2025183)the Science and Technology Plan of Hebei Provincial Department of Education(No.BJK2022060)the Shijiazhuang Science and Technology Planning Project(No.241790727A)the Opening Project of the Key Laboratory of Bionic Engineering(Ministry of Education,Jilin UniversityNo.KF2023003)the Fundamental Innovative Research Development Project of Yanshan University(No.2024LGQN008).
文摘Touch sensors with human-like tactile perception substantially expand the human’s interactive control capabilities,but still face challenges such as the need for external power sources,complex structures,multiple interfaces and signal crosstalk.We propose a body-coupled touch sensing mechanism that utilizes the power frequency electric field in the environment as the energy source,and develop a body-coupled bioinspired touch sensor that requires only two electrodes.The device integrates multiple touch states sensing,recognition and transmission functions through the rational design of gradient resistive elements,exhibiting excellent performance of ultra-low detection threshold(≤0.02 N),fast response(~10 ms)and ultra-durability(>300,000 cycles),and has been successfully applied to piano playing,robot control and unmanned aerial vehicle(UAV)control.The research presented in this paper opens a new path for the future development of interactive electronic technology.
基金This work was supported by the Shandong Province Key Research and Development Plan(2019JZZY010335,2019JZZY010340)Anhui Province Special Science and Technology Project(201903a05020028)Shandong Provincial Universities Youth Innovation Technology Plan Team(2020KJA013).
文摘Flexible ionotronic devices have great potential to revolutionize epidermal electronics.However,the lack of breathability in most ionotronic devices is a significance barrier to practical application.Herein,a breathable kirigami-shaped ionotronic e-textile with two functions of sensing(touch and strain)is designed,by integrating silk fabric and kirigami-shaped ionic hydrogel.The kirigami-shaped ionic hydrogel,combined with fluffy silk fabric,allows the ionotronic e-textile to achieve excellent breathability and comfortability.Furthermore,the fabricated ionotronic e-textile can precisely perform the function of touch sensing and strain perception.For touch-sensing,the ionotronic e-textile can detect the position of finger touching point with a fast response time(3 ms)based on the interruption of the ion field.For strain sensing,large workable strain range(>100%),inconspicuous drift(<0.78%)and long-term stability(>10,000 cycles)is demonstrated.On the proof of concept,a fabric keyboard and game controlling sleeve have been designed to display touch and strain sensing functions.The ionotronic e-textile break through the bottlenecks of traditional wearable ionotronic devices,suggesting a great promising application in future wearable epidermal electronics.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(RS-2024-00344920)supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning(KETEP)grant funded by the Ministry of Trade,Industry and Energy of Korea(No.RS-2023-00244330).
文摘In this study, we propose a sedimentation-driven fabrication process of a single-layered seamless touch position sensor based on the transformation of a sol-state precursor into a bifunctional composite using a carbon nanomaterial-incorporated silicone elastomer. The proposed fabrication method is based on the spontaneous gravitational sedimentation effect without additional post-processing. The concentration of the carbon nanomaterials in each part can be controlled by the main process parameters, such as the temperature and composition ratio. The developed touch position sensor, called a Bifunctional composite-based Single-layered seamless Triboelectric touch position sensor (BST sensor), includes dielectric and conductive parts in a single layer, and generates an electrical signal in response to external mechanical stimuli by a self-powered mechanism. The electrical output signal is measured differently depending on the distance from the touch position to the measurement position, and therefore, the seamless touch position sensing can be realized without an array of multiple sensor units. Moreover, the BST sensor allows the sensing surface to be discretized into on-demand resolutions and patterns. The sensing accuracy is 98.52% when a deep learning-based signal processing is used. Various BST sensors with flexible resolutions and patterns are introduced, and their application strategies are suggested as proof-of-concept demonstrations.
