Due to the excellent optoelectronic properties,fast response time,outstanding power efficiency and high stability,micro-LED plays an increasingly important role in the new generation of display technology compared wit...Due to the excellent optoelectronic properties,fast response time,outstanding power efficiency and high stability,micro-LED plays an increasingly important role in the new generation of display technology compared with LCD and OLED display.This paper mainly introduces the preparation methods of the GaN-based micro-LED array,the optoelectronic characteristics,and several key technologies to achieve full-color display,such as transfer printing,color conversion by quantum dot and local strain engineering.展开更多
[Objectives]This study was conducted to find effective measures to prevent and control Pelteobagrus fulvidraco hemorrhage.[Methods]Typical disease materials were collected for bacterial isolation and culture and biolo...[Objectives]This study was conducted to find effective measures to prevent and control Pelteobagrus fulvidraco hemorrhage.[Methods]Typical disease materials were collected for bacterial isolation and culture and biological characteristics detection,and morphological characteristics were observed by pure culture method.Biochemical characteristics were identified by micro biochemical method.Molecular identification was performed by PCR amplification method.Drug resistance was detected by disk diffusion method.The agar diffusion method was used for the detection of in-vitro inhibitory effect.The immunogenicity of the isolates was detected by subcutaneous immunoassay.The virulence factor was detected by spot inoculation.The intraperitoneal injection was used for the detection of pathogenicity.[Results]The isolates were round,grayish white,and identified as Aeromonas.They fermented maltose,glucose,etc.,did not ferment lactose,and were negative for urea and H2S and positive for lysine and arginine.The target fragment appeared at 1 500,and the sequences shared the highest homology with Aeromonas.The isolates were highly susceptible to amikacin and gentamicin,and resistant to penicillin G and tetracycline.Eight lactic acid bacteria strains produced 1.1-1.9 cm of inhibition zone against the isolates.After the second vaccination,the titer reached 2^13;both hemolysin and protease were produced;and the test mice died within 24 h.[Conclusions]The isolates are Aeromonas,and have strong drug resistance,immunogenicity and pathogenicity.Inactivated emusion-oil vaccines of Aeromonas combined with the co-use of lactic acid bacteria and susceptible drugs can prevent the outbreak of diseases caused by Aeromonas.展开更多
Developing multifunctional devices capable of on-demand task switching is crucial for highly integrated intelligent systems.We introduce a multifunctional ultraviolet(UV)photodetector(PD)based on an AlScN/GaN heteroju...Developing multifunctional devices capable of on-demand task switching is crucial for highly integrated intelligent systems.We introduce a multifunctional ultraviolet(UV)photodetector(PD)based on an AlScN/GaN heterojunction,featuring dynamically reconfigurable operating modes via bias voltages.At low bias voltages,it functions as a fast and highly sensitive UV PD(the specific detectivity reaching 9.37×10^(12) Jones),applied in high-speed imaging and optical communication.Interestingly,at higher bias voltages,the device exhibits a persistent photoconductivity effect.This behavior enables the effective emulation of biological synaptic plasticity,including key functions such as excitatory postsynaptic current,paired-pulse facilitation,and the transition from short-term memory to long-term memory.Leveraging this unique biascontrolled characteristic,we introduce a hardware-intrinsic encrypted optical imaging scheme by ingeniously combining the device’s distinct fast and slow photoresponse dynamics.Secure image access is achieved by employing a combination of synchronized optical inputs and dynamic biasing protocols as security keys.We demonstrate a single AlScN/GaN optoelectronic device platform for achieving reconfigurable multifunctionality and hardware-level encrypted imaging,holding significant potential for neuromorphic computing and highly secure information systems.展开更多
Multicolor series connection micro-LED arrays with emission wavelengths of violet, blue, green, and yellow were fabricated, and their optoelectronic properties and communication performances were investigated. The des...Multicolor series connection micro-LED arrays with emission wavelengths of violet, blue, green, and yellow were fabricated, and their optoelectronic properties and communication performances were investigated. The designed series connection micro-LED array exhibited the light output power of multiple milliwatts, whereas mostly keeping a slightly reduced modulation bandwidth, thus, enabling a higher signal-to-noise ratio compared to a single pixel and showing superior performance in the field of long-distance visible light communication(VLC). The achievable data rates of 400-, 451-, 509-, and 556-nm micro-LED arrays using bit/power loading orthogonal frequency division multiplexing were 5.71, 4.86, 4.39, and 0.82 Gbps, respectively. The aggregate data rate of 15.78 Gbps was achieved for the proof-of-concept wavelength division multiplexing system under a transmission distance of 13 m, which was the best data rate-distance product performance for the LED-based VLC to the best of our knowledge. In addition, the long-distance VLC based on yellow micro-LED was also demonstrated for the first time in this paper.展开更多
基金National Natural Science Foundation of China(NSFC)(61974031,61705041 and 61571135)Shanghai Sailing Program(17YF1429100)+2 种基金Shanghai Technical Standard Program(18DZ2206000)State Key Laboratory of Intense Pulsed Radiation Simulation and Effect Funding(SKLIPR1607)National Key Research and Development Program of China(2017YFB0403603).
文摘Due to the excellent optoelectronic properties,fast response time,outstanding power efficiency and high stability,micro-LED plays an increasingly important role in the new generation of display technology compared with LCD and OLED display.This paper mainly introduces the preparation methods of the GaN-based micro-LED array,the optoelectronic characteristics,and several key technologies to achieve full-color display,such as transfer printing,color conversion by quantum dot and local strain engineering.
基金Supported by Jiangxi Education Department(GJJ150416)Jiangxi Science and Technology Department(20122BBF60082)College Students’Innovation and Enterpreneurship Training Program of Jiangxi Province(201710410065)
文摘[Objectives]This study was conducted to find effective measures to prevent and control Pelteobagrus fulvidraco hemorrhage.[Methods]Typical disease materials were collected for bacterial isolation and culture and biological characteristics detection,and morphological characteristics were observed by pure culture method.Biochemical characteristics were identified by micro biochemical method.Molecular identification was performed by PCR amplification method.Drug resistance was detected by disk diffusion method.The agar diffusion method was used for the detection of in-vitro inhibitory effect.The immunogenicity of the isolates was detected by subcutaneous immunoassay.The virulence factor was detected by spot inoculation.The intraperitoneal injection was used for the detection of pathogenicity.[Results]The isolates were round,grayish white,and identified as Aeromonas.They fermented maltose,glucose,etc.,did not ferment lactose,and were negative for urea and H2S and positive for lysine and arginine.The target fragment appeared at 1 500,and the sequences shared the highest homology with Aeromonas.The isolates were highly susceptible to amikacin and gentamicin,and resistant to penicillin G and tetracycline.Eight lactic acid bacteria strains produced 1.1-1.9 cm of inhibition zone against the isolates.After the second vaccination,the titer reached 2^13;both hemolysin and protease were produced;and the test mice died within 24 h.[Conclusions]The isolates are Aeromonas,and have strong drug resistance,immunogenicity and pathogenicity.Inactivated emusion-oil vaccines of Aeromonas combined with the co-use of lactic acid bacteria and susceptible drugs can prevent the outbreak of diseases caused by Aeromonas.
基金funded by the National Natural Science Foundation of China(Grant Nos.62374075,62274017,62174016,and 62074019)the Fundamental Research Funds for Central Universities of Jiangnan University(Grant Nos.JUSRP202504018 and JUSRP202501142)the Research and Practice Projects on Postgraduate Education and Teaching Reform of Jiangnan University(Grant No.YJSJGZD24_006).
文摘Developing multifunctional devices capable of on-demand task switching is crucial for highly integrated intelligent systems.We introduce a multifunctional ultraviolet(UV)photodetector(PD)based on an AlScN/GaN heterojunction,featuring dynamically reconfigurable operating modes via bias voltages.At low bias voltages,it functions as a fast and highly sensitive UV PD(the specific detectivity reaching 9.37×10^(12) Jones),applied in high-speed imaging and optical communication.Interestingly,at higher bias voltages,the device exhibits a persistent photoconductivity effect.This behavior enables the effective emulation of biological synaptic plasticity,including key functions such as excitatory postsynaptic current,paired-pulse facilitation,and the transition from short-term memory to long-term memory.Leveraging this unique biascontrolled characteristic,we introduce a hardware-intrinsic encrypted optical imaging scheme by ingeniously combining the device’s distinct fast and slow photoresponse dynamics.Secure image access is achieved by employing a combination of synchronized optical inputs and dynamic biasing protocols as security keys.We demonstrate a single AlScN/GaN optoelectronic device platform for achieving reconfigurable multifunctionality and hardware-level encrypted imaging,holding significant potential for neuromorphic computing and highly secure information systems.
基金National Key Research and Development Program of China(2021YFB3601000,2021YFB3601003,2021YFE0105300)National Natural Science Foundation of China(61974031)+1 种基金Science and Technology Commission of Shanghai Municipality(21511101303)Leading-edge Technology Program of Jiangsu Natural Science Foundation(BE2021008-2)。
文摘Multicolor series connection micro-LED arrays with emission wavelengths of violet, blue, green, and yellow were fabricated, and their optoelectronic properties and communication performances were investigated. The designed series connection micro-LED array exhibited the light output power of multiple milliwatts, whereas mostly keeping a slightly reduced modulation bandwidth, thus, enabling a higher signal-to-noise ratio compared to a single pixel and showing superior performance in the field of long-distance visible light communication(VLC). The achievable data rates of 400-, 451-, 509-, and 556-nm micro-LED arrays using bit/power loading orthogonal frequency division multiplexing were 5.71, 4.86, 4.39, and 0.82 Gbps, respectively. The aggregate data rate of 15.78 Gbps was achieved for the proof-of-concept wavelength division multiplexing system under a transmission distance of 13 m, which was the best data rate-distance product performance for the LED-based VLC to the best of our knowledge. In addition, the long-distance VLC based on yellow micro-LED was also demonstrated for the first time in this paper.
