Reconfigurable devices can be used to achieve multiple logic operation and intelligent optical sensing with low power consumption,which is promising candidates for new generation electronic and optoelectronic integrat...Reconfigurable devices can be used to achieve multiple logic operation and intelligent optical sensing with low power consumption,which is promising candidates for new generation electronic and optoelectronic integrated circuits.However,the versatility is still limited and need to be extended by the device architectures design.Here,we report an asymmetrically gate two-dimensional(2D)van der Waals heterostructure with hybrid dielectric layer SiO_(2)/hexagonal boron nitride(h-BN),which enable rich function including reconfigurable logic operation and in-sensor information encryption enabled by both volatile and non-volatile optoelectrical modulation.When the partial gate is grounded,the non-volatile light assisted electrostatic doping endowed partially reconfigurable doping between n-type and p-type,which allow the switching of logic XOR and not implication(NIMP).When the global gate is grounded,additionally taking the optical signal as another input signal,logic AND and OR is realized by combined regulation of the light and localized gate voltage.Depending on the high on/off current ratio approaching 105 and reliable&switchable logic gate,in-sensor information encryption and decryption is demonstrated by manipulating the logic output.Hence,these results provide strong extension for current reconfigurable electronic and optoelectronic devices.展开更多
Traditional optical fiber communication encryption methods lack sufficient dynamic adaptability and hardware flexibility,while reconfigurable logic gates can overcome this limitation,thereby significantly improving th...Traditional optical fiber communication encryption methods lack sufficient dynamic adaptability and hardware flexibility,while reconfigurable logic gates can overcome this limitation,thereby significantly improving the flexibility of encryption systems.This study reports a reconfigurable optoelectronic logic gate(OELG)system based on hafnium-zirconium oxide(HZO)ferroelectric thin films.Through ultra-low temperature atomic layer deposition technique,the fabricated HZO thin films demonstrate an exceptional pyroelectric coefficient(1835.91μC m^(−2)K^(-1))and robust multi-level polarization stability,enabling efficient broadband photon-to-current conversion.By leveraging the pyroelectric effect and tunable polarization states,the OELG device achieves dynamic optical signal modulation and logic processing.The OELG device supports five fundamental logic operations(AND,OR,NAND,NOR,NOT)via electrical bias and polarization control,without requiring hardware modifications.The OELG device demonstrates stable performance over 109 cycles with no degradation,meeting practical application requirements.Furthermore,a convolutional neural network(CNN)-integrated image encryption-decryption framework was validated,achieving 95.01%recognition accuracy on decrypted data,while unauthorized decryption attempts resulted in significant feature loss.This study addresses security challenges in optical communication networks by proposing an innovative solution that integrates pyroelectric materials with reconfigurable logic gate technology,offering a new pathway to enhance physical-layer security.展开更多
Traditional digital processing approaches are based on semiconductor transistors, which suffer from high power consumption, aggravating with technology node scaling. To solve definitively this problem, a number of eme...Traditional digital processing approaches are based on semiconductor transistors, which suffer from high power consumption, aggravating with technology node scaling. To solve definitively this problem, a number of emerging non-volatile nanodevices are under intense investigations. Meanwhile, novel computing circuits are invented to dig the full potential of the nanodevices. The combination of non-volatile nanodevices with suitable computing paradigms have many merits compared with the complementary metal-oxide-semiconductor transistor （CMOS） technology based structures, such as zero standby power, ultra-high density, non-volatility, and acceptable access speed. In this paper, we overview and compare the computing paradigms based on the emerging nanodevices towards ultra-low dissipation.展开更多
Scaling of complementary metal-oxide-semiconductor technology nodes using conventional semiconducting materials is slowing down.The development of semiconductor technology with new materials and new concepts has becom...Scaling of complementary metal-oxide-semiconductor technology nodes using conventional semiconducting materials is slowing down.The development of semiconductor technology with new materials and new concepts has become an important focus of scientific and industrial research.In recent years,emerging ambipolar two-dimensional(2D)materials-based reconfigurable devices have shown their potential in high-integration,multifunctional circuits and have begun to attract the attention of researchers.Here,we summarize the latest progress in the field concerning ambipolar 2D materials-based reconfigurable devices.Firstly,we introduce the basic properties and preparation methods of ambipolar 2D materials.Secondly,we discuss the latest applications of reconfigurable devices based on ambipolar 2D materials.Furthermore,we also introduce the current research status of ambipolar material devices in large-scale integration.Finally,we analyze the challenges faced during the development of ambipolar 2D materials-based reconfigurable devices and provide prospects for their future development.展开更多
Neuromorphic computing provides a remarkably efficient and adaptable alter-native to traditional computing architectures by embodying the impressive power efficiency and parallel processing capabilities of the human b...Neuromorphic computing provides a remarkably efficient and adaptable alter-native to traditional computing architectures by embodying the impressive power efficiency and parallel processing capabilities of the human brain.How-ever,the prevailing focus on integrate-and-fire mode in current artificial neu-rons fails to fully acknowledge the nuanced multifunctionality and adaptive characteristics,especially the temporally variable operating modes and spatial heterogeneity present in natural neurons.Here we report a spatiotemporal-specific artificial neuron implemented with a ferroelectric planar memristor,by engineering the inherent in-plane ferroelectricity ofα-In_(2)Se_(3) and the exten-sive regulation capability of the co-planar multi-electrodes.With enhanced information processing capabilities,the artificial neuron facilitates adjustable reservoir computing and reconfigurable 16 types of logic-gate operations,ulti-mately achieving precise speech recognition with an accuracy approaching 100%.Our work clearly demonstrates the benefits of spatiotemporal specificity in artificial neurons,and contributes to the advancement of more realistic neuromorphic computing systems.展开更多
A new approach for network survivability problem in Intemet protocol （IP） over wavelength division multiplexing （WDM） optical network is proposed to enhance the IP layer restorability under physical link failure t...A new approach for network survivability problem in Intemet protocol （IP） over wavelength division multiplexing （WDM） optical network is proposed to enhance the IP layer restorability under physical link failure through logical topology reconfiguration. More specifically, after traffic arrival and departure, reconfiguring the logical topology correspondingly is helpful to minimize the traffic disruption after physical link failure. So, in this paper, this problem is proposed for first time and formulated as an integer linear programming （ILP） problem. And then, two heuristic algorithms are proposed. The performance of proposed algorithms have been evaluated through simulations, and the results show that reconfiguring the logical topology dynamically could achieve more than 20% improvement of the restorability of traffic in IP layer, but with acceptable resource cost.展开更多
基金supported by the Beijing Natural Science Foundation(No.JQ20027)the National Science Foundation of China(No.62305013)+2 种基金China Postdoctoral Science Foundation(No.2023M730137)the China National Postdoctoral Program for Innovative Talents(No.BX20230033)Beijing Postdoctoral Research Foundation(No.2023-zz-95).
文摘Reconfigurable devices can be used to achieve multiple logic operation and intelligent optical sensing with low power consumption,which is promising candidates for new generation electronic and optoelectronic integrated circuits.However,the versatility is still limited and need to be extended by the device architectures design.Here,we report an asymmetrically gate two-dimensional(2D)van der Waals heterostructure with hybrid dielectric layer SiO_(2)/hexagonal boron nitride(h-BN),which enable rich function including reconfigurable logic operation and in-sensor information encryption enabled by both volatile and non-volatile optoelectrical modulation.When the partial gate is grounded,the non-volatile light assisted electrostatic doping endowed partially reconfigurable doping between n-type and p-type,which allow the switching of logic XOR and not implication(NIMP).When the global gate is grounded,additionally taking the optical signal as another input signal,logic AND and OR is realized by combined regulation of the light and localized gate voltage.Depending on the high on/off current ratio approaching 105 and reliable&switchable logic gate,in-sensor information encryption and decryption is demonstrated by manipulating the logic output.Hence,these results provide strong extension for current reconfigurable electronic and optoelectronic devices.
基金financially supported by the National Key R&D Program of China(2021YFB4000800)the Provincial Natural Science Foundation of Hunan(2025JJ60351,2023JJ30599,2023JJ50009)the National Natural Science Foundation of China(U23A20322)。
文摘Traditional optical fiber communication encryption methods lack sufficient dynamic adaptability and hardware flexibility,while reconfigurable logic gates can overcome this limitation,thereby significantly improving the flexibility of encryption systems.This study reports a reconfigurable optoelectronic logic gate(OELG)system based on hafnium-zirconium oxide(HZO)ferroelectric thin films.Through ultra-low temperature atomic layer deposition technique,the fabricated HZO thin films demonstrate an exceptional pyroelectric coefficient(1835.91μC m^(−2)K^(-1))and robust multi-level polarization stability,enabling efficient broadband photon-to-current conversion.By leveraging the pyroelectric effect and tunable polarization states,the OELG device achieves dynamic optical signal modulation and logic processing.The OELG device supports five fundamental logic operations(AND,OR,NAND,NOR,NOT)via electrical bias and polarization control,without requiring hardware modifications.The OELG device demonstrates stable performance over 109 cycles with no degradation,meeting practical application requirements.Furthermore,a convolutional neural network(CNN)-integrated image encryption-decryption framework was validated,achieving 95.01%recognition accuracy on decrypted data,while unauthorized decryption attempts resulted in significant feature loss.This study addresses security challenges in optical communication networks by proposing an innovative solution that integrates pyroelectric materials with reconfigurable logic gate technology,offering a new pathway to enhance physical-layer security.
文摘Traditional digital processing approaches are based on semiconductor transistors, which suffer from high power consumption, aggravating with technology node scaling. To solve definitively this problem, a number of emerging non-volatile nanodevices are under intense investigations. Meanwhile, novel computing circuits are invented to dig the full potential of the nanodevices. The combination of non-volatile nanodevices with suitable computing paradigms have many merits compared with the complementary metal-oxide-semiconductor transistor （CMOS） technology based structures, such as zero standby power, ultra-high density, non-volatility, and acceptable access speed. In this paper, we overview and compare the computing paradigms based on the emerging nanodevices towards ultra-low dissipation.
基金supported by the National Natural Science Foundation of China(22175184 and 22105207)the CAS Project for Young Scientists in Basic Research(YSBR-053)+1 种基金the Strategic Priority Research Programme of the Chinese Academy of Sciences(XDB0520202)the CAS Project for Young Scientists in Interdisciplinary Research.
文摘Scaling of complementary metal-oxide-semiconductor technology nodes using conventional semiconducting materials is slowing down.The development of semiconductor technology with new materials and new concepts has become an important focus of scientific and industrial research.In recent years,emerging ambipolar two-dimensional(2D)materials-based reconfigurable devices have shown their potential in high-integration,multifunctional circuits and have begun to attract the attention of researchers.Here,we summarize the latest progress in the field concerning ambipolar 2D materials-based reconfigurable devices.Firstly,we introduce the basic properties and preparation methods of ambipolar 2D materials.Secondly,we discuss the latest applications of reconfigurable devices based on ambipolar 2D materials.Furthermore,we also introduce the current research status of ambipolar material devices in large-scale integration.Finally,we analyze the challenges faced during the development of ambipolar 2D materials-based reconfigurable devices and provide prospects for their future development.
基金National Natural Science Foundation of China,Grant/Award Numbers:52021001,52102156,52222206,U20A20244National Key Research and Development Program of China,Grant/Award Number:2021YFA0718800。
文摘Neuromorphic computing provides a remarkably efficient and adaptable alter-native to traditional computing architectures by embodying the impressive power efficiency and parallel processing capabilities of the human brain.How-ever,the prevailing focus on integrate-and-fire mode in current artificial neu-rons fails to fully acknowledge the nuanced multifunctionality and adaptive characteristics,especially the temporally variable operating modes and spatial heterogeneity present in natural neurons.Here we report a spatiotemporal-specific artificial neuron implemented with a ferroelectric planar memristor,by engineering the inherent in-plane ferroelectricity ofα-In_(2)Se_(3) and the exten-sive regulation capability of the co-planar multi-electrodes.With enhanced information processing capabilities,the artificial neuron facilitates adjustable reservoir computing and reconfigurable 16 types of logic-gate operations,ulti-mately achieving precise speech recognition with an accuracy approaching 100%.Our work clearly demonstrates the benefits of spatiotemporal specificity in artificial neurons,and contributes to the advancement of more realistic neuromorphic computing systems.
基金supported by the National Natural Science Foundation of China (61205058)the Open Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), P. R. China
文摘A new approach for network survivability problem in Intemet protocol （IP） over wavelength division multiplexing （WDM） optical network is proposed to enhance the IP layer restorability under physical link failure through logical topology reconfiguration. More specifically, after traffic arrival and departure, reconfiguring the logical topology correspondingly is helpful to minimize the traffic disruption after physical link failure. So, in this paper, this problem is proposed for first time and formulated as an integer linear programming （ILP） problem. And then, two heuristic algorithms are proposed. The performance of proposed algorithms have been evaluated through simulations, and the results show that reconfiguring the logical topology dynamically could achieve more than 20% improvement of the restorability of traffic in IP layer, but with acceptable resource cost.
