With the growing importance of wearable and portable electronics in modern society and industry,researchers from all over the world have reported on advances in energy harvesting and self-powered sensing technologies....With the growing importance of wearable and portable electronics in modern society and industry,researchers from all over the world have reported on advances in energy harvesting and self-powered sensing technologies.The current review discusses recent developments in triboelectric platforms from a manufacturing perspective,including material,design,application,and industrialization.Manufacturing is an essential component of both industry and technology.The use of a proper manufacturing process enables cutting-edge technology in a lab-scale stage to progress to commercialization and popularization with scalability,availability,commercial advantage,and consistent quality.Furthermore,much literature has emphasized that the most powerful advantage of the triboelectric platform is its wide range of available materials and simple working mechanism,both of which are important characteristics in manufacturing engineering.As a result,different manufacturing processes can be implemented as needed.Because the practical process can have a synergetic effect on the fundamental development,resulting in the growth of both,the development of the triboelectric platform from the standpoint of manufacturing engineering can be further advanced.However,research into the development of a productive manufacturing process is still in its early stages in the field of triboelectric platforms.This review looks at the various manufacturing technologies used in previous studies and discusses the potential benefits of the appropriate process for triboelectric platforms.Given its unique strength,which includes a diverse material selection and a simple working mechanism,the triboelectric platform can use a variety of manufacturing technologies and the process can be optimized as needed.Numerous research groups have clearly demonstrated the triboelectric platform's advantages.As a result,using appropriate manufacturing processes can accelerate the technological advancement of triboelectric platforms in a variety of research and industrial fields by allowing them to move beyond the lab-scale fabrication stage.展开更多
Triboelectricity-driven acoustic transducers with various merits have demonstrated significant potential in energy harvesting and self-powered sensing.The transducers generally require additionally a spacer and a corr...Triboelectricity-driven acoustic transducers with various merits have demonstrated significant potential in energy harvesting and self-powered sensing.The transducers generally require additionally a spacer and a corresponding exquisite process for smooth operation,which provides an unnecessary interface between the elements.The exploration of a novel manufacturing approach for triboelectricity-driven acoustic transducers is warranted to resolve this issue.Here,Triboelectricitydriven Oscillating Nano-Electricity generator(TONE)developed via mechanically guided fourdimensional(4D)printing is introduced for acoustic energy harvesting and self-powered voice recognition.The mechanically buckled structure of the TONE facilitates its smooth oscillation by sound wave without the use of an additional spacer,enabling the TONE to exhibit outputs of 156 V and 10μA.The output characteristics of the TONE are analyzed based on the acoustic-structuraltriboelectric interaction mechanism.The TONE demonstrates practical versatility by providing power to commercial electronics from controlled/daily sound and being utilized in artificial intelligence-based human voice recognition sensors.展开更多
Although the triboelectric nanogenerator(TENG)has been highlighted as a promising mechanical energy harvester,the requirement of stacking the two individual layers,contact and conductive layers,has been ball and chain...Although the triboelectric nanogenerator(TENG)has been highlighted as a promising mechanical energy harvester,the requirement of stacking the two individual layers,contact and conductive layers,has been ball and chain around the ankle of unleashing potential and an advantage of TENGs in their application expansion and commercialization.Herein,one-step fabrication of a single-layered bifunctional composite film-based TENG(BFTENG)driven by the sedimentation of a sol-state precursor is proposed for the extremely facile conversion of various ordinary items into energy harvesters.The BF-TENG consists of the polydimethylsiloxane(PDMS)matrix and a carbon nanopowder filler,and it includes both the dielectric part(DP)and conductive part(CP)in one single layer.The electrical percolation threshold of the incorporated concentration of carbon,ICC,for CP to act as a passage through which induced charges move in BF-TENGs is determined to be 1.0 wt%.The degree of carbon sedimentation in developing the proposed composite can be controlled by the curing speed and the probability of a crosslinking reaction.The maximum peak power is approximately 0.093μW when the contact surface area is 78.5 mm2;the contact frequency is 8 Hz,and the connected load resistance is 9 MΩ.Based on these results,the electrical performance of BF-TENGs in response to various physical stimuli is characterized considering the mechanical energy sources available in daily life.Then,converting ordinary surfaces such as desks and human skin into BF-TENGs through a single coating procedure and harvesting energy to power an electric device are demonstrated as a proof-of-concept.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 Research Foundation of Korea(NRF)(No.2021R1C1C2009703)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.RS2023-00244330)。
文摘With the growing importance of wearable and portable electronics in modern society and industry,researchers from all over the world have reported on advances in energy harvesting and self-powered sensing technologies.The current review discusses recent developments in triboelectric platforms from a manufacturing perspective,including material,design,application,and industrialization.Manufacturing is an essential component of both industry and technology.The use of a proper manufacturing process enables cutting-edge technology in a lab-scale stage to progress to commercialization and popularization with scalability,availability,commercial advantage,and consistent quality.Furthermore,much literature has emphasized that the most powerful advantage of the triboelectric platform is its wide range of available materials and simple working mechanism,both of which are important characteristics in manufacturing engineering.As a result,different manufacturing processes can be implemented as needed.Because the practical process can have a synergetic effect on the fundamental development,resulting in the growth of both,the development of the triboelectric platform from the standpoint of manufacturing engineering can be further advanced.However,research into the development of a productive manufacturing process is still in its early stages in the field of triboelectric platforms.This review looks at the various manufacturing technologies used in previous studies and discusses the potential benefits of the appropriate process for triboelectric platforms.Given its unique strength,which includes a diverse material selection and a simple working mechanism,the triboelectric platform can use a variety of manufacturing technologies and the process can be optimized as needed.Numerous research groups have clearly demonstrated the triboelectric platform's advantages.As a result,using appropriate manufacturing processes can accelerate the technological advancement of triboelectric platforms in a variety of research and industrial fields by allowing them to move beyond the lab-scale fabrication stage.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.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Triboelectricity-driven acoustic transducers with various merits have demonstrated significant potential in energy harvesting and self-powered sensing.The transducers generally require additionally a spacer and a corresponding exquisite process for smooth operation,which provides an unnecessary interface between the elements.The exploration of a novel manufacturing approach for triboelectricity-driven acoustic transducers is warranted to resolve this issue.Here,Triboelectricitydriven Oscillating Nano-Electricity generator(TONE)developed via mechanically guided fourdimensional(4D)printing is introduced for acoustic energy harvesting and self-powered voice recognition.The mechanically buckled structure of the TONE facilitates its smooth oscillation by sound wave without the use of an additional spacer,enabling the TONE to exhibit outputs of 156 V and 10μA.The output characteristics of the TONE are analyzed based on the acoustic-structuraltriboelectric interaction mechanism.The TONE demonstrates practical versatility by providing power to commercial electronics from controlled/daily sound and being utilized in artificial intelligence-based human voice recognition sensors.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.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.RS2023-00244330).
文摘Although the triboelectric nanogenerator(TENG)has been highlighted as a promising mechanical energy harvester,the requirement of stacking the two individual layers,contact and conductive layers,has been ball and chain around the ankle of unleashing potential and an advantage of TENGs in their application expansion and commercialization.Herein,one-step fabrication of a single-layered bifunctional composite film-based TENG(BFTENG)driven by the sedimentation of a sol-state precursor is proposed for the extremely facile conversion of various ordinary items into energy harvesters.The BF-TENG consists of the polydimethylsiloxane(PDMS)matrix and a carbon nanopowder filler,and it includes both the dielectric part(DP)and conductive part(CP)in one single layer.The electrical percolation threshold of the incorporated concentration of carbon,ICC,for CP to act as a passage through which induced charges move in BF-TENGs is determined to be 1.0 wt%.The degree of carbon sedimentation in developing the proposed composite can be controlled by the curing speed and the probability of a crosslinking reaction.The maximum peak power is approximately 0.093μW when the contact surface area is 78.5 mm2;the contact frequency is 8 Hz,and the connected load resistance is 9 MΩ.Based on these results,the electrical performance of BF-TENGs in response to various physical stimuli is characterized considering the mechanical energy sources available in daily life.Then,converting ordinary surfaces such as desks and human skin into BF-TENGs through a single coating procedure and harvesting energy to power an electric device are demonstrated as a proof-of-concept.
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.
