The low-dimensional,highly anisotropic geometries,and superior mechanical properties of one-dimensional(1D) nanomaterials allow the exquisite strain engineering with a broad tunability inaccessible to bulk or thin-fil...The low-dimensional,highly anisotropic geometries,and superior mechanical properties of one-dimensional(1D) nanomaterials allow the exquisite strain engineering with a broad tunability inaccessible to bulk or thin-film materials.Such capability enables unprecedented possibilities for probing intriguing physics and materials science in the 1-D limit.Among the techniques for introducing controlled strains in 1D materials,nanoimprinting with embossed substrates attracts increased attention due to its capability to parallelly form nanomaterials into wrinkled structures with controlled periodicities,amplitudes,orientations at large scale with nanoscale resolutions.Here,we systematically investigated the strain-engineered anisotropic optical properties in Te nanowires through introducing a controlled strain field using a resist-free thermally assisted nanoimprinting process.The magnitude of induced strains can be tuned by adjusting the imprinting pressure,the nanowire diameter,and the patterns on the substrates.The observed Raman spectra from the chiral-chain lattice of 1D Te reveal the strong lattice vibration response under the strain.Our results suggest the potential of 1D Te as a promising candidate for flexible electronics,deformable optoelectronics,and wearable sensors.The experimental platform can also enable the exquisite mechanical control in other nanomaterials using substrate-induced,on-demand,and controlled strains.展开更多
Piezoelectric and triboelectric enhanced catalysis use mechanical stimuli to enhance the performance of catalysts in energy conversion and pollutant degradation.The electric field generated by piezoelectric materials ...Piezoelectric and triboelectric enhanced catalysis use mechanical stimuli to enhance the performance of catalysts in energy conversion and pollutant degradation.The electric field generated by piezoelectric materials can tune the charge migration behavior and redox kinetics of catalysts,leading to improved efficiency in energy conversion and pollutant degradation.Triboelectrification can also generate an electric field when two different materials come into contact,and this effect can be used to enhance catalytic reactions.Research in this area is still in its early stages,but it has the potential to significantly improve the efficiency of energy conversion and pollutant degradation and provide a promising method for environmental remediation.This review accounts for recent advancements in piezoelectricity and triboelectricity enhanced catalysis,covering basic understandings,catalyst design,and performance insights.Finally,challenges and future opportunities for piezoelectricity and triboelectricity enhanced catalysis are discussed.展开更多
Two-dimensional(2-D)materials of atomic thickness have attracted considerable interest due to their excellent electrical,optoelectronic,mechanical,and thermal properties,which make them attractive for electronic devic...Two-dimensional(2-D)materials of atomic thickness have attracted considerable interest due to their excellent electrical,optoelectronic,mechanical,and thermal properties,which make them attractive for electronic devices,sensors,and energy systems.Scavenging the otherwise wasted energy from the ambient environment into electrical power holds promise to address the emerging energy needs,in particular for the portable and wearable devices.The versatile properties of 2-D materials together with their atomically thin body create diverse possibilities for the conversion of ambient energy.The present review focuses on the recent key advances in emerging energy-harvesting devices based on monolayer 2-D materials through various mechanisms such as photovoltaic,thermoelectric,piezoelectric,triboelectric,and hydrovoltaic devices,as well as progress for harvesting the osmotic pressure and Wi-Fi wireless energy.The representative achievements regarding the monolayer heterostructures and hybrid devices are also discussed.Finally,we provide a discussion of the challenges and opportunities for 2-D monolayer material-based energy-harvesting devices in the development of self-powered electronics and wearable technologies.展开更多
Rapid advances in artificial intelligence,robotics,and remote healthcare have increased the demand for sustainable and highperformance wearable sensors.Triboelectric devices are gaining traction due to their self-powe...Rapid advances in artificial intelligence,robotics,and remote healthcare have increased the demand for sustainable and highperformance wearable sensors.Triboelectric devices are gaining traction due to their self-powered operation capability and potential as wearable energy harvesters.Skin-interfaced triboelectric sensors(SITSs)can detect various mechanical signals and monitor physiological signals in real-time.Biopolymer-based SITSs are ideal for skin-interfaced applications since they are biocompatible and biodegradable.This review focuses on the recent advancements of SITS made from biocompatible polymer materials,such as plant-based,animal-based,and synthetic polymers,and highlights their potential for various applications,including human–machine interface(HMI)and physiological sensing.In addition,the fundamentals,challenges,and prospects of SITS based on biocompatible polymers are discussed.展开更多
The state-of-the-art triboelectric nanogenerators(TENGs)are constructed with synthetic polymers,curtailing their application prospects and relevance in sustainable technologies.The economically viable transformation a...The state-of-the-art triboelectric nanogenerators(TENGs)are constructed with synthetic polymers,curtailing their application prospects and relevance in sustainable technologies.The economically viable transformation and engineering of naturally abundant materials into efficient TENGs for mechanical energy harvesting is meaningful not only for fundamental scientific exploration,but also for addressing societal needs.Being an abundant natural biopolymer,chitosan enables exciting opportunity for low-cost,biodegradable TENG applications.However,the electrical outputs of chitosan-based TENGs are low compared with the devices built with synthetic polymers.Here,we explore the facile molecular surface engineering in chitosan to significantly boost the performance of chitosan-based TENG for enabling the practical applications,for example,self-powered car speed sensor.The molecular surface engineering offers a potentially promising scheme for designing and implementing high-performance biopolymer-based TENGs for selfpowered nanosystems in sustainable technologies.We further explore for the first time the feasibility of data mining approaches to analyze and learn the acquired triboelectric signals from the car speed sensors and predict the relationship between the triboelectric signals and car speed values.展开更多
基金the College of Engineering and School of Industrial Engineering at Purdue University for startup supportpartially supported by the National Science Foundation under Grant CMMI-1762698+3 种基金financial assistance from ONR NEPTUNE program National Science Foundation under Grant CMMI-1538360supported by the Louis Beecherl, Jr. Endowment Fundsthe College of Engineering and School of Materials Engineering at Purdue University for startup supportsupported through computational resources provided by the Information Technology department at Purdue University。
文摘The low-dimensional,highly anisotropic geometries,and superior mechanical properties of one-dimensional(1D) nanomaterials allow the exquisite strain engineering with a broad tunability inaccessible to bulk or thin-film materials.Such capability enables unprecedented possibilities for probing intriguing physics and materials science in the 1-D limit.Among the techniques for introducing controlled strains in 1D materials,nanoimprinting with embossed substrates attracts increased attention due to its capability to parallelly form nanomaterials into wrinkled structures with controlled periodicities,amplitudes,orientations at large scale with nanoscale resolutions.Here,we systematically investigated the strain-engineered anisotropic optical properties in Te nanowires through introducing a controlled strain field using a resist-free thermally assisted nanoimprinting process.The magnitude of induced strains can be tuned by adjusting the imprinting pressure,the nanowire diameter,and the patterns on the substrates.The observed Raman spectra from the chiral-chain lattice of 1D Te reveal the strong lattice vibration response under the strain.Our results suggest the potential of 1D Te as a promising candidate for flexible electronics,deformable optoelectronics,and wearable sensors.The experimental platform can also enable the exquisite mechanical control in other nanomaterials using substrate-induced,on-demand,and controlled strains.
基金National Natural Science Foundation of China(22304092)Shandong Provincial Natural Science Foundation(ZR2023QB010)+1 种基金Science,Education and Industry Integration Pilot Project Plan of Qilu University of Technology(Shandong Academy of Sciences)(2023PX011)Talent Research Project of Qilu University of Technology(Shandong Academy of Sciences)(2023RCKY091).
文摘Piezoelectric and triboelectric enhanced catalysis use mechanical stimuli to enhance the performance of catalysts in energy conversion and pollutant degradation.The electric field generated by piezoelectric materials can tune the charge migration behavior and redox kinetics of catalysts,leading to improved efficiency in energy conversion and pollutant degradation.Triboelectrification can also generate an electric field when two different materials come into contact,and this effect can be used to enhance catalytic reactions.Research in this area is still in its early stages,but it has the potential to significantly improve the efficiency of energy conversion and pollutant degradation and provide a promising method for environmental remediation.This review accounts for recent advancements in piezoelectricity and triboelectricity enhanced catalysis,covering basic understandings,catalyst design,and performance insights.Finally,challenges and future opportunities for piezoelectricity and triboelectricity enhanced catalysis are discussed.
基金W.Z.W.was partially supported by the National Science Foundation under grant CMMI-1762698.
文摘Two-dimensional(2-D)materials of atomic thickness have attracted considerable interest due to their excellent electrical,optoelectronic,mechanical,and thermal properties,which make them attractive for electronic devices,sensors,and energy systems.Scavenging the otherwise wasted energy from the ambient environment into electrical power holds promise to address the emerging energy needs,in particular for the portable and wearable devices.The versatile properties of 2-D materials together with their atomically thin body create diverse possibilities for the conversion of ambient energy.The present review focuses on the recent key advances in emerging energy-harvesting devices based on monolayer 2-D materials through various mechanisms such as photovoltaic,thermoelectric,piezoelectric,triboelectric,and hydrovoltaic devices,as well as progress for harvesting the osmotic pressure and Wi-Fi wireless energy.The representative achievements regarding the monolayer heterostructures and hybrid devices are also discussed.Finally,we provide a discussion of the challenges and opportunities for 2-D monolayer material-based energy-harvesting devices in the development of self-powered electronics and wearable technologies.
文摘Rapid advances in artificial intelligence,robotics,and remote healthcare have increased the demand for sustainable and highperformance wearable sensors.Triboelectric devices are gaining traction due to their self-powered operation capability and potential as wearable energy harvesters.Skin-interfaced triboelectric sensors(SITSs)can detect various mechanical signals and monitor physiological signals in real-time.Biopolymer-based SITSs are ideal for skin-interfaced applications since they are biocompatible and biodegradable.This review focuses on the recent advancements of SITS made from biocompatible polymer materials,such as plant-based,animal-based,and synthetic polymers,and highlights their potential for various applications,including human–machine interface(HMI)and physiological sensing.In addition,the fundamentals,challenges,and prospects of SITS based on biocompatible polymers are discussed.
基金W.Z.W.acknowledge the College of Engineering and School of Industrial Engineering at Purdue University for the startup support and the Ravi and Eleanor Talwar Rising Star Assistant Professorship.The support provided by the China Scholarship Council(CSC)during a visit of Chenxiang Ma to Purdue University is acknowledged.
文摘The state-of-the-art triboelectric nanogenerators(TENGs)are constructed with synthetic polymers,curtailing their application prospects and relevance in sustainable technologies.The economically viable transformation and engineering of naturally abundant materials into efficient TENGs for mechanical energy harvesting is meaningful not only for fundamental scientific exploration,but also for addressing societal needs.Being an abundant natural biopolymer,chitosan enables exciting opportunity for low-cost,biodegradable TENG applications.However,the electrical outputs of chitosan-based TENGs are low compared with the devices built with synthetic polymers.Here,we explore the facile molecular surface engineering in chitosan to significantly boost the performance of chitosan-based TENG for enabling the practical applications,for example,self-powered car speed sensor.The molecular surface engineering offers a potentially promising scheme for designing and implementing high-performance biopolymer-based TENGs for selfpowered nanosystems in sustainable technologies.We further explore for the first time the feasibility of data mining approaches to analyze and learn the acquired triboelectric signals from the car speed sensors and predict the relationship between the triboelectric signals and car speed values.
