In biological systems, conformational transformations of nucleic acids play critical roles in genetic regulation. However, it remains a tricky task to design and optimize specific labeling strategies to track these ch...In biological systems, conformational transformations of nucleic acids play critical roles in genetic regulation. However, it remains a tricky task to design and optimize specific labeling strategies to track these changes.In this study, we exploited an intercalating fluorescent dye,GelRed, to characterize different DNA structures. We studied the correlation between fluorescence intensity and DNA structural properties. We showed that single-stranded DNAs with predicted self-folded secondary structures show much stronger fluorescence than those without such structures. For double-stranded DNAs, we observed that fluorescence intensity is positively correlated to their GCcontent. We also demonstrated that GelRed can be used to monitor DNA conformational changes upon temperature variations in real time. Based on these findings, we concluded that the fluorescence intensity of a GelRed-stained DNA structure has a good correlation with its thermostability in the form of a change in Gibbs free energy.展开更多
Monodispersed ZnSnO3 microspheres are successfully prepared via a facile microwave-assisted method together with subsequently calcination treatment.Powder X-ray diffraction(PXRD)results indicate that the structure of ...Monodispersed ZnSnO3 microspheres are successfully prepared via a facile microwave-assisted method together with subsequently calcination treatment.Powder X-ray diffraction(PXRD)results indicate that the structure of the products shifted from crystalline to amorphous under high-tempe rature treatments.Field emission scanning electron microscope(FESEM)and the transmission electron microscope(TEM)observations demonstrate that the as-obtained products are composed of uniform microspheres with rough surfaces and the mean diameter is measured as-700 nm.Moreover,the morphology of ZnSnO3 microspheres can be well controlled by adjusting the ratio of Zn2+and Sn4+.The gas sensing properties of ZnSnO3 microspheres with different ratios of Zn2+/Sn4+are investigated.Our results indicate that the ZnSnO3 microspheres exhibit good selectivity and high sensitivity towards ethanol at the optimum working temperature of 230℃.When the sensor is exposed 50 ppm ethanol,the value of response is 47 and the response/recovery times are 11 s and 12 s,respectively.展开更多
Peony pollen is a cheap and readily available biomass material with a relatively high protein content.In this work,it was employed as an N-rich precursor to prepare the nitrogen-doped porous carbon for supercapacitor ...Peony pollen is a cheap and readily available biomass material with a relatively high protein content.In this work,it was employed as an N-rich precursor to prepare the nitrogen-doped porous carbon for supercapacitor application.The porous carbon microspheres were prepared through a hydrothermal method and subsequent carbonization process.Notably,ammonium borofruoride and potassium hydroxide were employed respectively as an etchant and an activator to modify the porosity of the materials.The as prepared ANPPCs-700 has a super high BET specific surface area of 824.69 m^2/g.The microstructure,chemical state and electrochemical properties of the product were investigated in detail.The prepared nitrogen-doped carbon microspheres exhibits excellent specific capacity of 209 F/g at a current density of lA/g and remained 92.5%of the initial capacitance after 5000 deep cycles at 5 A/g.展开更多
Fe_(3)O_(4) is considered as a promising electrode material for lithium-ion batteries(LIBs) due to its low cost and high theoretical capacity(928 mAh/g).Nevertheless,the huge volume expansion and poor conductivity ser...Fe_(3)O_(4) is considered as a promising electrode material for lithium-ion batteries(LIBs) due to its low cost and high theoretical capacity(928 mAh/g).Nevertheless,the huge volume expansion and poor conductivity seriously hamper its practical applications.In this study,we use a facile hydrothermal reaction together with a post heat treatment to construct the three-dimensional heterostructured composite(Fe_(3)O_(4)/rGO) inwhich reduced graphene oxide sheets wraped the Fe_(3)O_(4) submicron cubes as the conductive network.The electric conduction and electrode kinetics of lithium ion insertion/extraction reaction of the composite is enhanced due to the assist of conductive rGO,and thus the Listorage performance is obviously improved.The composite exhibits a reversible charge capacity of772.1 mAh/g at the current density of 0.1 A/g,and the capacity retention reaches 70.3% after400 cycles at0.5 A/g,demonstrating obviously higher specific capacity and rate capability over the Fe_(3)O_(4) submicron cubes without rGO,and much superior cycling stability to the parent Fe_2 O_3 submicron cubes without rGO.On the other hand,as a synergic conductive carbon support,the flexible rGO plays an important role in buffering the large volume change during the repeated discharge/charge cycling.展开更多
This work reports a superhydrophobic divinylbenzene polymer with hierarchical porous structure as sensing material to modify the quartz crystal microbalance(QCM)to detect benzene,toluene,ethylbenzene,and xylene(BTEX)v...This work reports a superhydrophobic divinylbenzene polymer with hierarchical porous structure as sensing material to modify the quartz crystal microbalance(QCM)to detect benzene,toluene,ethylbenzene,and xylene(BTEX)vapor.Notably,sensing results toward toluene vapor in different relative humidities indicates that this superhydrophobic polymer has favorable toluene/water selective detection performance.Besides,the limit of detection toward toluene is lower than 1 ppm.展开更多
Noble metal is usually used to improve the gas sensing performance of metal oxide semiconductor(MOS)due to its better catalytic properties.In this work,we reported a synthesis of Pd/ZnO nanocomposite by an in situ red...Noble metal is usually used to improve the gas sensing performance of metal oxide semiconductor(MOS)due to its better catalytic properties.In this work,we reported a synthesis of Pd/ZnO nanocomposite by an in situ reduction with ascorbic acid(AA).It was found that Pd/ZnO sensor has excellent selectivity to CO and the response of the Pd/ZnO sensor towards 100 ppm CO was as high as 15(Ra/Rg),obviously higher than that of the pristine ZnO sensor(1.4)when the working temperature is 220℃.Moreover,the pure ZnO sensor almost has no selectivity to CO,but the Pd/ZnO sensor has excellent selectivity to CO,which may be ascribed to the electronic sensitization of Pd.Our present results demonstrate that the Pd can significantly improve the gas-sensing performance of metal oxide semiconductor and the obtained sensor has great potential in monitoring coal mine gas.展开更多
To obtain environmentally friendly,integrated and miniaturized gas sensors for the increasing request for the Internet of Things industry and other relative areas,the ultra-thin CoO_(x)/Zn O heterogeneous film with ac...To obtain environmentally friendly,integrated and miniaturized gas sensors for the increasing request for the Internet of Things industry and other relative areas,the ultra-thin CoO_(x)/Zn O heterogeneous film with active interfacial sites was in-situ deposited on micro-electro-mechanical systems(MEMS)as H_(2)S sensor.Atomic layer deposition(ALD)was employed to in-situ fabricate the uniform Zn O thin film.ALD CoO_(x)was deposited on ZnO surface to obtain CoO_(x)/Zn O heterojunction and active interfacial sites.The ultra-thin film(20 nm)with 50 ALD Co O_(x)decorated on 250 ALD Zn O displays excellent sensing performance,including very high response(4.45@200×10^(-9))and selectivity to H_(2)S with a limit of detection(LOD)of 0.38×10^(-9),long-term sensing stability,high response/recovery performance(7.5 s/15.7 s)and mechanical strength at 230。C.Reasons for the high sensing performance of CoO_(x)/Zn O have been confirmed by series of characterizations and density functional theory(DFT)calculation.Heterojunction film thickness with Debye length,the oxygen vacancies and the synergistic effect of active interfacial sites are main reasons for the high sensing performance.The strategy by fabrication of CoO_(x)/Zn O heterogeneous film within Debye length and employing synergistic effect of active interfacial sites offers a promising route for the design of environmentally friendly gas sensors.Furthermore,the ALD technique offers a facile in-situ strategy and high-throughput fabrication of MEMS gas sensors.展开更多
Reasonably constructing an atomic interface is pronouncedly essential for surface-related gas-sensing reaction.Herein,we present an ingen-ious feedback-regulation system by changing the interactional mode between sing...Reasonably constructing an atomic interface is pronouncedly essential for surface-related gas-sensing reaction.Herein,we present an ingen-ious feedback-regulation system by changing the interactional mode between single Pt atoms and adjacent S species for high-efficiency SO_(2)sensing.We found that the single Pt sites on the MoS_(2)surface can induce easier volatiliza-tion of adjacent S species to activate the whole inert S plane.Reversely,the activated S species can provide a feedback role in tailoring the antibonding-orbital electronic occupancy state of Pt atoms,thus creating a combined system involving S vacancy-assisted single Pt sites(Pt-Vs)to synergistically improve the adsorption ability of SO_(2)gas molecules.Further-more,in situ Raman,ex situ X-ray photoelectron spectroscopy testing and density functional theory analysis demonstrate the intact feedback-regulation system can expand the electron transfer path from single Pt sites to whole Pt-MoS_(2)supports in SO_(2)gas atmosphere.Equipped with wireless-sensing modules,the final Pt1-MoS_(2)-def sensors array can further realize real-time monitoring of SO_(2)levels and cloud-data storage for plant growth.Such a fundamental understanding of the intrinsic link between atomic interface and sensing mechanism is thus expected to broaden the rational design of highly effective gas sensors.展开更多
In order to improve the co nvenie nce and sensitivity of amphetamines drug testing and reduce the threat of drugs to humans,we have designed a QCM gas sensor to detect amine-containing drugs.The sensing material is de...In order to improve the co nvenie nce and sensitivity of amphetamines drug testing and reduce the threat of drugs to humans,we have designed a QCM gas sensor to detect amine-containing drugs.The sensing material is designed based on the chemical nature of amine drugs.The sensing mechanism is derived from a reve rsible Schiff base interaction between the amino group of the drug and the carbonyl group of the novel calix[6]arene derivatives as well as the hydrogen bond interaction between amino group and hydroxyl.The new composite material was well characterized by different analytical techniques including 1 H nuclear magnetic resonance(1 H-NMR),fourier transform infrared spectroscopy(FT-IR),scanning electro nic microscopy(SEM),transmission electron microscope(TEM),Raman spectra,powder X-ray diffraction,etc.The sensing experiments were conducted by coating the composite onto quartz crystal microbalance(QCM)transducers.The experimental results indicated that the novel calixarene derivatives and their GO complexes based on the design have excellent selectivity,high sensitivity and repeatability toβ-phenylethylamine.展开更多
Recently,the development of new electrode materials for lithium-ion batteries(LIBs)has received intensive attention.As an important family of inorganic materials,mixed Mo-based transition metal oxides system is focuse...Recently,the development of new electrode materials for lithium-ion batteries(LIBs)has received intensive attention.As an important family of inorganic materials,mixed Mo-based transition metal oxides system is focused as anode materials.In the present work,a simple route has been adopted for the synthesis of layered-flake-likeβ-SnMo04 Nano-assemblies,which have been explored as potential anode materials for the first time in lithium-ion battery(LIB).Overall,the current reports on metal molybdate as anode materials are still rarely.As the anode material for LIBs,it was observed that the fabricated anode is capable of delivering a steady state capacity of almost 400 mAh/g up to 300 cycles under the influence of200 mA/g current density.Further,the anode material is suitable for use as a rated capacity anode because of its high current density tolerance.The present study can be further extended for the generation of a wide variety of other novel materials for multidisciplinary energy related applications.展开更多
The neuromuscular junction(NMJ)is the peripheral synapse controlling muscle contraction and coordinated movement in a wide variety of animals.In humans,the mature NMJ is the primary target of morphological disassembly...The neuromuscular junction(NMJ)is the peripheral synapse controlling muscle contraction and coordinated movement in a wide variety of animals.In humans,the mature NMJ is the primary target of morphological disassembly and functional decline in several physiological and pathological conditions,such as aging and motor diseases。展开更多
Porous polyaniline (PANI) was prepared through an efficient and costeffective method by polymerization of aniline in the NaCl solution at room temperature. The resulting PANI provided large surface area due to its hig...Porous polyaniline (PANI) was prepared through an efficient and costeffective method by polymerization of aniline in the NaCl solution at room temperature. The resulting PANI provided large surface area due to its highly porous structure and the intercrossed nanorod, resulting in good electrochemical performance. The porous PANI electrodes showed a high specific capacitance of 480 F·g^-1, 3 times greater than that of PANI without using the NaCl solution. We also make chemically crosslinked hydrogel film for hydrogel polymer electrolyte as well as the flexible supercapacitors (SCs) with PANI. The specific capacitance of the device was 234 F·g^-1 at the current density of 1 A·g^-1. The energy density of the device could reach as high as 75 W·h·kg^-1 while the power density was 0.5 kW·kg^-1, indicating that PANI be a promising material in flexible SCs.展开更多
The powerful resource of parallelizing simple devices for realizing and enhancing complex operations comes with the drawback of multiple connections for addressing and controlling the individual elements.Here we repor...The powerful resource of parallelizing simple devices for realizing and enhancing complex operations comes with the drawback of multiple connections for addressing and controlling the individual elements.Here we report on a technological platform where several mechanical resonators can be individually probed and electrically actuated by using dispersive multiplexing within a single electrical channel.We demonstrate room temperature control of the individual device vibrational motion and spatially-resolved readouts.As the single elements have proven to be excellent bolometers and individual nodes for reservoir computing,our platform can be directly employed for single-channel addressing of multiple devices,with immediate applications for far-infrared cameras,spatial light modulators and recurrent neural networks operating at room temperature.展开更多
基金supported by the National Natural Science Foundation of China(Nos.U1532119,21775157,21675167,and 31571014)the Instrument Developing Project of the Chinese Academy of Sciences(Develop the Microsystems for Single Particle Tracking)
文摘In biological systems, conformational transformations of nucleic acids play critical roles in genetic regulation. However, it remains a tricky task to design and optimize specific labeling strategies to track these changes.In this study, we exploited an intercalating fluorescent dye,GelRed, to characterize different DNA structures. We studied the correlation between fluorescence intensity and DNA structural properties. We showed that single-stranded DNAs with predicted self-folded secondary structures show much stronger fluorescence than those without such structures. For double-stranded DNAs, we observed that fluorescence intensity is positively correlated to their GCcontent. We also demonstrated that GelRed can be used to monitor DNA conformational changes upon temperature variations in real time. Based on these findings, we concluded that the fluorescence intensity of a GelRed-stained DNA structure has a good correlation with its thermostability in the form of a change in Gibbs free energy.
基金supported by National Nature Science Foundation of China(Nos.61671284 and U1704255)。
文摘Monodispersed ZnSnO3 microspheres are successfully prepared via a facile microwave-assisted method together with subsequently calcination treatment.Powder X-ray diffraction(PXRD)results indicate that the structure of the products shifted from crystalline to amorphous under high-tempe rature treatments.Field emission scanning electron microscope(FESEM)and the transmission electron microscope(TEM)observations demonstrate that the as-obtained products are composed of uniform microspheres with rough surfaces and the mean diameter is measured as-700 nm.Moreover,the morphology of ZnSnO3 microspheres can be well controlled by adjusting the ratio of Zn2+and Sn4+.The gas sensing properties of ZnSnO3 microspheres with different ratios of Zn2+/Sn4+are investigated.Our results indicate that the ZnSnO3 microspheres exhibit good selectivity and high sensitivity towards ethanol at the optimum working temperature of 230℃.When the sensor is exposed 50 ppm ethanol,the value of response is 47 and the response/recovery times are 11 s and 12 s,respectively.
基金financial supports from the National Key Research and Development Program of China(Nos.2017YFB0102200,2017YFB0102900)。
文摘Peony pollen is a cheap and readily available biomass material with a relatively high protein content.In this work,it was employed as an N-rich precursor to prepare the nitrogen-doped porous carbon for supercapacitor application.The porous carbon microspheres were prepared through a hydrothermal method and subsequent carbonization process.Notably,ammonium borofruoride and potassium hydroxide were employed respectively as an etchant and an activator to modify the porosity of the materials.The as prepared ANPPCs-700 has a super high BET specific surface area of 824.69 m^2/g.The microstructure,chemical state and electrochemical properties of the product were investigated in detail.The prepared nitrogen-doped carbon microspheres exhibits excellent specific capacity of 209 F/g at a current density of lA/g and remained 92.5%of the initial capacitance after 5000 deep cycles at 5 A/g.
基金supported by the Shanghai Committee of Science and Technology,China(No.17010500500)the National Key Research and Development Plan of China(No.2017YFB0102200)。
文摘Fe_(3)O_(4) is considered as a promising electrode material for lithium-ion batteries(LIBs) due to its low cost and high theoretical capacity(928 mAh/g).Nevertheless,the huge volume expansion and poor conductivity seriously hamper its practical applications.In this study,we use a facile hydrothermal reaction together with a post heat treatment to construct the three-dimensional heterostructured composite(Fe_(3)O_(4)/rGO) inwhich reduced graphene oxide sheets wraped the Fe_(3)O_(4) submicron cubes as the conductive network.The electric conduction and electrode kinetics of lithium ion insertion/extraction reaction of the composite is enhanced due to the assist of conductive rGO,and thus the Listorage performance is obviously improved.The composite exhibits a reversible charge capacity of772.1 mAh/g at the current density of 0.1 A/g,and the capacity retention reaches 70.3% after400 cycles at0.5 A/g,demonstrating obviously higher specific capacity and rate capability over the Fe_(3)O_(4) submicron cubes without rGO,and much superior cycling stability to the parent Fe_2 O_3 submicron cubes without rGO.On the other hand,as a synergic conductive carbon support,the flexible rGO plays an important role in buffering the large volume change during the repeated discharge/charge cycling.
基金supported by National Natural Science Foundation of China(No.61527818)the financial support from Zhejiang Sci-Tech University(ZSTU,No.19012393-Y)。
文摘This work reports a superhydrophobic divinylbenzene polymer with hierarchical porous structure as sensing material to modify the quartz crystal microbalance(QCM)to detect benzene,toluene,ethylbenzene,and xylene(BTEX)vapor.Notably,sensing results toward toluene vapor in different relative humidities indicates that this superhydrophobic polymer has favorable toluene/water selective detection performance.Besides,the limit of detection toward toluene is lower than 1 ppm.
基金the support of the National Natural Science Foundation of China(Nos.U1704255 and 61671284)the Shanghai Committee of Science and Technology,China(No.17010500500)。
文摘Noble metal is usually used to improve the gas sensing performance of metal oxide semiconductor(MOS)due to its better catalytic properties.In this work,we reported a synthesis of Pd/ZnO nanocomposite by an in situ reduction with ascorbic acid(AA).It was found that Pd/ZnO sensor has excellent selectivity to CO and the response of the Pd/ZnO sensor towards 100 ppm CO was as high as 15(Ra/Rg),obviously higher than that of the pristine ZnO sensor(1.4)when the working temperature is 220℃.Moreover,the pure ZnO sensor almost has no selectivity to CO,but the Pd/ZnO sensor has excellent selectivity to CO,which may be ascribed to the electronic sensitization of Pd.Our present results demonstrate that the Pd can significantly improve the gas-sensing performance of metal oxide semiconductor and the obtained sensor has great potential in monitoring coal mine gas.
基金financially supported by the National Key Research and Development Program of China(No.2020YFB2008600)the financial support from China Scholarship Council(CSC)。
文摘To obtain environmentally friendly,integrated and miniaturized gas sensors for the increasing request for the Internet of Things industry and other relative areas,the ultra-thin CoO_(x)/Zn O heterogeneous film with active interfacial sites was in-situ deposited on micro-electro-mechanical systems(MEMS)as H_(2)S sensor.Atomic layer deposition(ALD)was employed to in-situ fabricate the uniform Zn O thin film.ALD CoO_(x)was deposited on ZnO surface to obtain CoO_(x)/Zn O heterojunction and active interfacial sites.The ultra-thin film(20 nm)with 50 ALD Co O_(x)decorated on 250 ALD Zn O displays excellent sensing performance,including very high response(4.45@200×10^(-9))and selectivity to H_(2)S with a limit of detection(LOD)of 0.38×10^(-9),long-term sensing stability,high response/recovery performance(7.5 s/15.7 s)and mechanical strength at 230。C.Reasons for the high sensing performance of CoO_(x)/Zn O have been confirmed by series of characterizations and density functional theory(DFT)calculation.Heterojunction film thickness with Debye length,the oxygen vacancies and the synergistic effect of active interfacial sites are main reasons for the high sensing performance.The strategy by fabrication of CoO_(x)/Zn O heterogeneous film within Debye length and employing synergistic effect of active interfacial sites offers a promising route for the design of environmentally friendly gas sensors.Furthermore,the ALD technique offers a facile in-situ strategy and high-throughput fabrication of MEMS gas sensors.
基金This work was supported by the National Natural Science Foundation of China(62271299)Shanghai Sailing Program(22YF1413400).Shanghai Engineering Research Center for We thank the Integrated Circuits and Advanced Display Materials.
文摘Reasonably constructing an atomic interface is pronouncedly essential for surface-related gas-sensing reaction.Herein,we present an ingen-ious feedback-regulation system by changing the interactional mode between single Pt atoms and adjacent S species for high-efficiency SO_(2)sensing.We found that the single Pt sites on the MoS_(2)surface can induce easier volatiliza-tion of adjacent S species to activate the whole inert S plane.Reversely,the activated S species can provide a feedback role in tailoring the antibonding-orbital electronic occupancy state of Pt atoms,thus creating a combined system involving S vacancy-assisted single Pt sites(Pt-Vs)to synergistically improve the adsorption ability of SO_(2)gas molecules.Further-more,in situ Raman,ex situ X-ray photoelectron spectroscopy testing and density functional theory analysis demonstrate the intact feedback-regulation system can expand the electron transfer path from single Pt sites to whole Pt-MoS_(2)supports in SO_(2)gas atmosphere.Equipped with wireless-sensing modules,the final Pt1-MoS_(2)-def sensors array can further realize real-time monitoring of SO_(2)levels and cloud-data storage for plant growth.Such a fundamental understanding of the intrinsic link between atomic interface and sensing mechanism is thus expected to broaden the rational design of highly effective gas sensors.
基金the support of National Natural Science Foundation of China(No.61527818)the Shanghai Municipal Education Commission(No.Peak Discipline Construction Program)。
文摘In order to improve the co nvenie nce and sensitivity of amphetamines drug testing and reduce the threat of drugs to humans,we have designed a QCM gas sensor to detect amine-containing drugs.The sensing material is designed based on the chemical nature of amine drugs.The sensing mechanism is derived from a reve rsible Schiff base interaction between the amino group of the drug and the carbonyl group of the novel calix[6]arene derivatives as well as the hydrogen bond interaction between amino group and hydroxyl.The new composite material was well characterized by different analytical techniques including 1 H nuclear magnetic resonance(1 H-NMR),fourier transform infrared spectroscopy(FT-IR),scanning electro nic microscopy(SEM),transmission electron microscope(TEM),Raman spectra,powder X-ray diffraction,etc.The sensing experiments were conducted by coating the composite onto quartz crystal microbalance(QCM)transducers.The experimental results indicated that the novel calixarene derivatives and their GO complexes based on the design have excellent selectivity,high sensitivity and repeatability toβ-phenylethylamine.
基金support of National Key ResearchDevelopment Program of China (No.2017YFB0102900)+2 种基金National Key Research and Development Plan (No.2017YFB0102200)the Shanghai Committee of Science and Technology,China (No. 17010500500)the Shanghai Municipal Education Commission (Peak Discipline Construction program)
文摘Recently,the development of new electrode materials for lithium-ion batteries(LIBs)has received intensive attention.As an important family of inorganic materials,mixed Mo-based transition metal oxides system is focused as anode materials.In the present work,a simple route has been adopted for the synthesis of layered-flake-likeβ-SnMo04 Nano-assemblies,which have been explored as potential anode materials for the first time in lithium-ion battery(LIB).Overall,the current reports on metal molybdate as anode materials are still rarely.As the anode material for LIBs,it was observed that the fabricated anode is capable of delivering a steady state capacity of almost 400 mAh/g up to 300 cycles under the influence of200 mA/g current density.Further,the anode material is suitable for use as a rated capacity anode because of its high current density tolerance.The present study can be further extended for the generation of a wide variety of other novel materials for multidisciplinary energy related applications.
基金VRID UdeC Nr 2021000233INV(to JPH)Fondecyt 1190926(to SM)。
文摘The neuromuscular junction(NMJ)is the peripheral synapse controlling muscle contraction and coordinated movement in a wide variety of animals.In humans,the mature NMJ is the primary target of morphological disassembly and functional decline in several physiological and pathological conditions,such as aging and motor diseases。
文摘Porous polyaniline (PANI) was prepared through an efficient and costeffective method by polymerization of aniline in the NaCl solution at room temperature. The resulting PANI provided large surface area due to its highly porous structure and the intercrossed nanorod, resulting in good electrochemical performance. The porous PANI electrodes showed a high specific capacitance of 480 F·g^-1, 3 times greater than that of PANI without using the NaCl solution. We also make chemically crosslinked hydrogel film for hydrogel polymer electrolyte as well as the flexible supercapacitors (SCs) with PANI. The specific capacitance of the device was 234 F·g^-1 at the current density of 1 A·g^-1. The energy density of the device could reach as high as 75 W·h·kg^-1 while the power density was 0.5 kW·kg^-1, indicating that PANI be a promising material in flexible SCs.
基金financed through funding from ATTRACT,a European Union’s Horizon 2020 research and innovation project under grant agreement No.101004462.
文摘The powerful resource of parallelizing simple devices for realizing and enhancing complex operations comes with the drawback of multiple connections for addressing and controlling the individual elements.Here we report on a technological platform where several mechanical resonators can be individually probed and electrically actuated by using dispersive multiplexing within a single electrical channel.We demonstrate room temperature control of the individual device vibrational motion and spatially-resolved readouts.As the single elements have proven to be excellent bolometers and individual nodes for reservoir computing,our platform can be directly employed for single-channel addressing of multiple devices,with immediate applications for far-infrared cameras,spatial light modulators and recurrent neural networks operating at room temperature.
