Mechanical energy-induced charge separation in intelligent sensing

Wang, Wenjie; Hua, Xian-Sheng; Zhang, Lei; Wang, Yingfei; Yuan, Quan; Tan, Jie

doi:10.1016/j.xcrp.2022.100952

“…[7] On the one hand, traditional force sensors require an external power supply for long-time monitoring and electrical readouts. [8] On the other hand, most ML-based sensors entail an external light source, such as ultraviolet (UV) light, to realize reversible ML. [9] These sensors therefore usually suffer from complex fabrication schemes and high-power consumption, aggravating the environment and energy crisis.…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, the devices with force‐induced optical and electrical responses rely on two types of external power supply [7] . On the one hand, traditional force sensors require an external power supply for long‐time monitoring and electrical readouts [8] . On the other hand, most ML‐based sensors entail an external light source, such as ultraviolet (UV) light, to realize reversible ML [9] .…”

Section: Introductionmentioning

confidence: 99%

Self‐Powered and Self‐Recoverable Multimodal Force Sensors Based on Trap State and Interfacial Electron Transfer

Wang,

Tan,

Wang

et al. 2024

Angewandte Chemie

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Multi‐dimensional force sensing that combines intensity, location, area and the like could gather a wealth of information from mechanical stimuli. Developing materials with force‐induced optical and electrical dual responses would provide unique opportunities to multi‐dimensional force sensing, with electrical signals quantifying the force amplitude and the luminescence output providing spatial distribution of force. However, the reliance on external power supply and high‐energy excitation source brings significant challenges to the applicability of multi‐dimensional force sensors. Here we reported the mechanical energy‐driven and sunlight‐activated materials with force‐induced dual responses, and investigated the underlying mechanisms of self‐sustainable force sensing. Theoretical analysis and experimental data unraveled that trap‐controlled luminescence and interfacial electron transfer play a major role in force‐induced optical and electrical output. These materials were manufactured into pressure sensor with renewable dual‐mode output for quantifying and visualization of pressures by electrical and optical output, respectively, without power supply and high‐energy irradiation. The quantification of tactile sensation and stimuli localization of mice highlighted the multi‐dimensional sensing ability of the sensor. Overall, this self‐powered pressure sensor with multimodal output provides more modalities of force sensing, poised to change the way that intelligent devices sense with the world.

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“…In medical imaging, structural health monitoring, and the Internet of Things for industry, the same problem arises due to the needs for transducer array and sensor network. Although the sensors can be made smaller and cheaper with the development of manufacturing technologies such as micro-electro-mechanical systems (MEMS) and flexible electronics [7][8][9], the manufacturing process is usually complicated. Meanwhile, the sensors suffer from problems such as stability, productivity, and longevity.…”

Section: Introductionmentioning

confidence: 99%

Spatial information coding with artificially engineered structures for acoustic and elastic wave sensing

Jiang

¹

,

He

²

2022

Front. Phys.

4

0

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Acoustic and elastic waves carry a wealth of useful physical information in real world. Sensing acoustic and elastic waves is very important for discovering knowledge in various fields. Conventional wave sensing approaches generally require multiple expensive sensors and complex hardware systems due to the uniform spatial transmission characteristics of physical fields. These limitations prompt the development of wave sensing strategies with high integration degree, lightweight structure, and low hardware cost. Due to their extraordinary physical properties, artificially engineered structures such as metastructures can encode the physical field information by flexibly manipulating the transmission characteristics of acoustic and elastic waves. The fusion of information coding and wave sensing process breaks through the limitations of conventional sensing approaches and reduces the sensing cost. This review aims to introduce the advances in spatial information coding with artificially engineered structures for acoustic and elastic wave sensing. First, we review the enhanced spatial wave sensing with metastructures for weak signal detection and source localization. Second, we introduce computational sensing approaches that combines the spatial transmission coding structures with reconstruction algorithms. Representative progress of computational sensing with metastructures and random scattering media in audio source separation, ultrasonic imaging, and vibration information identification is reviewed. Finally, the open problems, challenges, and research prospects of the spatial information coding structures for acoustic and elastic wave sensing are discussed.

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Self‐Powered and Self‐Recoverable Multimodal Force Sensors Based on Trap State and Interfacial Electron Transfer

Wang,

Tan,

Wang

et al. 2024

Angew Chem Int Ed

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0

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Multi‐dimensional force sensing that combines intensity, location, area and the like could gather a wealth of information from mechanical stimuli. Developing materials with force‐induced optical and electrical dual responses would provide unique opportunities to multi‐dimensional force sensing, with electrical signals quantifying the force amplitude and the luminescence output providing spatial distribution of force. However, the reliance on external power supply and high‐energy excitation source brings significant challenges to the applicability of multi‐dimensional force sensors. Here we reported the mechanical energy‐driven and sunlight‐activated materials with force‐induced dual responses, and investigated the underlying mechanisms of self‐sustainable force sensing. Theoretical analysis and experimental data unraveled that trap‐controlled luminescence and interfacial electron transfer play a major role in force‐induced optical and electrical output. These materials were manufactured into pressure sensor with renewable dual‐mode output for quantifying and visualization of pressures by electrical and optical output, respectively, without power supply and high‐energy irradiation. The quantification of tactile sensation and stimuli localization of mice highlighted the multi‐dimensional sensing ability of the sensor. Overall, this self‐powered pressure sensor with multimodal output provides more modalities of force sensing, poised to change the way that intelligent devices sense with the world.

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Mechanical energy-induced charge separation in intelligent sensing

Cited by 4 publications

References 163 publications

Self‐Powered and Self‐Recoverable Multimodal Force Sensors Based on Trap State and Interfacial Electron Transfer

Self‐Powered and Self‐Recoverable Multimodal Force Sensors Based on Trap State and Interfacial Electron Transfer

Spatial information coding with artificially engineered structures for acoustic and elastic wave sensing

Self‐Powered and Self‐Recoverable Multimodal Force Sensors Based on Trap State and Interfacial Electron Transfer

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