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基于HFSS的NFC天线研究与设计 被引量:2
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作者 张志刚 罗帅 《重庆理工大学学报(自然科学)》 CAS 北大核心 2024年第3期134-140,共7页
针对NFC(near field communication)天线的交互效率不高,导致传输信号不稳定的问题,可以分析天线的参数与电路的结构,使天线性能达到最优。利用Ansoft HFSS(high frequency structure simulator)进行环形天线的建模与分析,讨论了天线的... 针对NFC(near field communication)天线的交互效率不高,导致传输信号不稳定的问题,可以分析天线的参数与电路的结构,使天线性能达到最优。利用Ansoft HFSS(high frequency structure simulator)进行环形天线的建模与分析,讨论了天线的结构参数对天线性能的影响,分析了RLC电路对天线电感的影响,设计了串联匹配电路。对天线的带宽进行了优化,并对设计的耦合天线传输距离进行仿真,确定最佳耦合距离,提高天线的品质因数。结果表明:天线的回波损耗降低至-27.25 dB,最佳耦合距离为20 mm。 展开更多
关键词 近场通信 nfc天线 HFSS仿真 匹配电路
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基于NFC的乡村智慧医疗系统设计
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作者 朱亚丽 陈双 朱晓荣 《无线互联科技》 2024年第4期64-67,共4页
随着乡村振兴战略的实施,数字乡村建设如火如荼地进行着,乡村医疗系统的数字化改革是大势所趋。传统的乡村医疗系统存在“看病难、看病烦”的缺点,迫切需要一种全新的,更加智慧、便捷的智慧医疗系统。文章充分利用近场通信(Near Field C... 随着乡村振兴战略的实施,数字乡村建设如火如荼地进行着,乡村医疗系统的数字化改革是大势所趋。传统的乡村医疗系统存在“看病难、看病烦”的缺点,迫切需要一种全新的,更加智慧、便捷的智慧医疗系统。文章充分利用近场通信(Near Field Communication,NFC)技术的特点,将其应用于智慧医疗系统,提出了一种全新的智慧医疗系统架构,智能终端代替传统的病历,自主支付。该系统能够为大众提供快捷的医疗信息分享与查询、准确的诊断治疗以及全天候的信息服务。经过验证,该系统是可行的。 展开更多
关键词 nfc 智慧医疗系统 智能终端
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NFC技术下的非遗漆艺数字化创新设计研究
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作者 朱琦 刘向前 +1 位作者 张子怡 谢雨婷 《丝网印刷》 2024年第16期94-97,共4页
采用数字化建模和NFC近场通信技术,结合创新的数字化交互方式,将非遗漆艺与江西本土文化和海昏侯文化相结合,创新出新型的互动式礼物产品。探究改善现有文创产品形式、更好地满足消费者心理等需求,成功将传统大漆文化与文物保护意识融... 采用数字化建模和NFC近场通信技术,结合创新的数字化交互方式,将非遗漆艺与江西本土文化和海昏侯文化相结合,创新出新型的互动式礼物产品。探究改善现有文创产品形式、更好地满足消费者心理等需求,成功将传统大漆文化与文物保护意识融入新时代的产品设计中。 展开更多
关键词 非遗漆艺 保护与传承 数字服务 文化产品 nfc技术
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基于中国剩余定理的NFC安全认证算法 被引量:1
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作者 邹同浩 《计算机应用与软件》 北大核心 2024年第1期322-327,共6页
针对近场通信技术在应用中出现的安全隐患问题,给出一种基于中国剩余定理的算法。算法利用中国剩余定理实现对传送信息进行加密,中国剩余定理基于数学中大素数分解难题,使得攻击者无法进行破解;所有信息加密过程中混入随机数,用于保证... 针对近场通信技术在应用中出现的安全隐患问题,给出一种基于中国剩余定理的算法。算法利用中国剩余定理实现对传送信息进行加密,中国剩余定理基于数学中大素数分解难题,使得攻击者无法进行破解;所有信息加密过程中混入随机数,用于保证消息的新鲜性;算法在进行信息更新时采用伪随机函数计算,因伪随机函数具备的单向性,使得攻击者无法分析出有用隐私信息。将不同算法对比安全分析,表明该算法能够抵抗重放攻击、异步攻击等多种攻击。通过性能角度及仿真实验对多个算法进行分析,结果表明该算法计算时间复杂度低于其他算法。 展开更多
关键词 近场通信 中国剩余定理 伪随机函数 大素数 安全认证 GNY逻辑形式化分析
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玉米秸秆饲粮模式下不同NFC/NDF的比值对肉羊瘤胃发酵特性及血清生化指标的影响 被引量:1
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作者 红敏 兰向莉 +5 位作者 王丽萍 王宏宇 孙亚楠 李洪磊 乌仁图雅 刘志友 《饲料研究》 CAS 北大核心 2024年第1期5-10,共6页
试验旨在研究玉米秸秆饲粮模式下不同非纤维性碳水化合物(NFC)/中性洗涤纤维(NDF)比值对肉羊瘤胃发酵特性及血清生化指标的影响。选取15只健康、体重50 kg左右装有永久瘤胃瘘管的肉羊,试验Ⅰ组、Ⅱ组、Ⅲ组试验羊分别饲喂NFC/NDF比值为0... 试验旨在研究玉米秸秆饲粮模式下不同非纤维性碳水化合物(NFC)/中性洗涤纤维(NDF)比值对肉羊瘤胃发酵特性及血清生化指标的影响。选取15只健康、体重50 kg左右装有永久瘤胃瘘管的肉羊,试验Ⅰ组、Ⅱ组、Ⅲ组试验羊分别饲喂NFC/NDF比值为0.65、1.02和1.57的全混合饲粮。预试期15 d,正式试验期7 d。结果显示,随着NFC/NDF比值的升高,瘤胃pH值有下降的趋势;而瘤胃液氨态氮(NH3-N)含量呈现先升高后降低的趋势。随着采食时间的增加,瘤胃菌体蛋白(MCP)含量呈现先降低后升高的趋势。随饲粮NFC/NDF比值的升高,采食6 h后,总挥发性脂肪酸(TVFA)有上升的趋势;试验Ⅰ组肉羊血清总蛋白(TP)含量显著高于其他组(P<0.05),脂多糖(LPS)、白蛋白(ALB)含量显著低于其他组(P<0.05);试验Ⅱ组肉羊血清甘油三酯(TG)含量显著高于Ⅰ组(P<0.05),游离脂肪酸(NEFA)含量显著高于其他组(P<0.05);试验Ⅲ组肉羊血清尿素氮(BUN)和瘦素(LEP)的含量显著高于其他组(P<0.05),胰岛素样生长因子-1(IGF-1)含量显著高于试验Ⅱ组(P<0.05),超氧化物歧化酶(SOD)活性显著低于其他组(P<0.05)。研究表明,在玉米秸秆饲粮模式下NFC/NDF为1.02时,可改善肉羊瘤胃内环境,提高机体抗氧化水平。 展开更多
关键词 肉羊 nfc/NDF 瘤胃发酵特性 抗氧化能力
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高浓度CO_(2)胁迫预处理与电子束辐照对NFC苹果汁品质的影响
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作者 黄若涵 张天天 +1 位作者 刘芳 樊明涛 《食品工业科技》 CAS 北大核心 2024年第9期325-332,共8页
单一加工技术难以达到保持非浓缩还原(NFC)果汁营养和风味、降低褐变及杀菌的多重要求,为研究CO_(2)胁迫预处理与非热杀菌联合处理对NFC苹果汁品质的影响,本研究在苹果榨汁前采用50%CO_(2)胁迫处理,榨汁后分别用电子束辐照、巴氏杀菌两... 单一加工技术难以达到保持非浓缩还原(NFC)果汁营养和风味、降低褐变及杀菌的多重要求,为研究CO_(2)胁迫预处理与非热杀菌联合处理对NFC苹果汁品质的影响,本研究在苹果榨汁前采用50%CO_(2)胁迫处理,榨汁后分别用电子束辐照、巴氏杀菌两种杀菌方法,探究不同胁迫预处理强度、胁迫预处理与不同杀菌方法联合对NFC果汁感官品质、营养品质及抑菌效果的影响。结果表明:50%CO_(2)胁迫处理苹果显著提高果汁总酚含量、抗氧化活性、VC含量(P<0.05),贮藏48 h时,胁迫60 min组苹果汁总酚含量和总抗氧化能力分别是对照组的118.7%和104%;且CO_(2)胁迫处理60 min显著降低NFC果汁褐变度(P<0.05)。2 kGy辐照组、4 kGy辐照组褐变度显著低于对照组、巴氏杀菌组(P<0.05),且较好地保持了果汁酚类物质及香气,其中4 kGy辐照处理效果更好。2 kGy、4 kGy电子束辐照组与对照组相比抑菌效果显著(P<0.05),均达到国家标准要求。榨汁前采用50%浓度CO_(2)胁迫预处理60 min,结合4 kGy电子束辐照灭菌可作为一种新型NFC苹果汁加工技术。 展开更多
关键词 nfc 苹果汁 胁迫 褐变 电子束 巴氏杀菌
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Pixelated non-volatile programmable photonic integrated circuits with 20-level intermediate states 被引量:1
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作者 Wenyu Chen Shiyuan Liu Jinlong Zhu 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第3期477-487,共11页
Multi-level programmable photonic integrated circuits(PICs)and optical metasurfaces have gained widespread attention in many fields,such as neuromorphic photonics,opticalcommunications,and quantum information.In this ... Multi-level programmable photonic integrated circuits(PICs)and optical metasurfaces have gained widespread attention in many fields,such as neuromorphic photonics,opticalcommunications,and quantum information.In this paper,we propose pixelated programmable Si_(3)N_(4)PICs with record-high 20-level intermediate states at 785 nm wavelength.Such flexibility in phase or amplitude modulation is achieved by a programmable Sb_(2)S_(3)matrix,the footprint of whose elements can be as small as 1.2μm,limited only by the optical diffraction limit of anin-house developed pulsed laser writing system.We believe our work lays the foundation for laser-writing ultra-high-level(20 levels and even more)programmable photonic systems and metasurfaces based on phase change materials,which could catalyze diverse applications such as programmable neuromorphic photonics,biosensing,optical computing,photonic quantum computing,and reconfigurable metasurfaces. 展开更多
关键词 programmable photonic integrated circuits phase change materials multi-level intermediate states metasurfaces
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声热联合杀菌对NFC橙汁低温贮藏营养和感官品质的影响
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作者 王越 林鑫勰 +3 位作者 尹立来 朱玉燕 沈淑铃 郑小林 《农业工程学报》 EI CAS CSCD 北大核心 2024年第14期261-270,共10页
为了探究声热联合杀菌(thermosonication,TS)对非浓缩还原(not from concentrate,NFC)橙汁品质的影响,研究比较了传统巴氏杀菌(70℃,15 min)和TS(600 W,60℃,13 min)对贮藏期间NFC橙汁的微生物、色泽、柠檬苦素、诺米林、维生素C(vitami... 为了探究声热联合杀菌(thermosonication,TS)对非浓缩还原(not from concentrate,NFC)橙汁品质的影响,研究比较了传统巴氏杀菌(70℃,15 min)和TS(600 W,60℃,13 min)对贮藏期间NFC橙汁的微生物、色泽、柠檬苦素、诺米林、维生素C(vitamin C,Vc)、总酚、总黄酮含量,以及抗氧化活性的影响,并采用GC-MS分析评价2种杀菌方式对NFC橙汁风味的影响。结果表明,在贮藏期间,2种杀菌方式下NFC橙汁中菌落总数以及霉菌和酵母菌均符合国家标准,糖酸成分稳定,TS处理不影响NFC橙汁的酸甜口感。与传统巴氏杀菌处理NFC橙汁相比,TS处理提高了NFC橙汁的浊度稳定性和色泽,褐变指数降低了12.50%~16.67%,Vc的损失率减少了10.52%,总酚和总黄酮含量是传统巴氏杀菌组的1.00~1.06倍,柠檬苦素含量和诺米林含量分别降低了17.37%~56.62%和9.32%~63.85%,DPPH自由基清除能力和铁离子还原能力分别是巴氏杀菌的1.09~1.21倍和1.11~1.70倍。通过GC-MS分析共鉴定出49种挥发性风味物质。NFC橙汁经传统巴氏杀菌处理后产生1-辛烯-3-醇、2-辛炔-1-醇、丁酸乙酯、反-2-辛烯醛、反-2-壬烯醛、反-2-庚烯醛、水芹醛、6-甲基-5-庚烯-2-酮以及丁酸9种挥发性成分,导致NFC橙汁产生热异味;而TS处理能够有效抑制NFC橙汁产生这些成分,从而避免NFC橙汁产生热异味。因此,声热联合杀菌是一种优于或可代替NFC橙汁传统巴氏杀菌的杀菌方式,该研究为声热联合杀菌技术在NFC橙汁的应用提供理论依据和技术参数。 展开更多
关键词 温度 巴氏杀菌 品质 nfc橙汁 声热联合杀菌 挥发性成分
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井下NFC天线的研究及仿真分析
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作者 张祁梦莎 胡永建 +2 位作者 孙成芹 孙琦 张冠杰 《电子测量技术》 北大核心 2024年第1期17-22,共6页
为实现井下复杂环境中的近场通信,首先用三维有限元电磁仿真软件对铁氧体天线结构进行建模仿真,结果表明:线圈半径、导线半径、天线间距对天线正向传输系数的影响较大,铁氧体相对磁导率的影响较小。其次,为探究井下环境对天线传输性能... 为实现井下复杂环境中的近场通信,首先用三维有限元电磁仿真软件对铁氧体天线结构进行建模仿真,结果表明:线圈半径、导线半径、天线间距对天线正向传输系数的影响较大,铁氧体相对磁导率的影响较小。其次,为探究井下环境对天线传输性能的影响,用阻抗匹配工具对天线进行阻抗匹配,并建立带钻井液介质的金属钻具模型,结果表明:井下金属环境导致正向传输系数衰减3.3dB;钻井液电导率从0S/m增加到2S/m后,正向传输系数衰减8.2dB。将天线仿真模型与相同参数的实物模型进行对比,结果表明基本模型正向传输系数误差小于0.3dB,扩展模型正向传输系数误差小于5.5dB,仿真结果与实物测试结果具有一致性,可指导井下NFC天线设计。 展开更多
关键词 近场通信(nfc) nfc天线 铁氧体环形天线 天线仿真 阻抗匹配
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A Novel Framework to Construct S-Box Quantum Circuits Using System Modeling: Application to 4-Bit S-Boxes
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作者 Yongjin Jeon Seungjun Baek Jongsung Kim 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第10期545-561,共17页
Quantum computers accelerate many algorithms based on the superposition principle of quantum mechanics.The Grover algorithm provides significant performance to malicious users attacking symmetric key systems.Since the... Quantum computers accelerate many algorithms based on the superposition principle of quantum mechanics.The Grover algorithm provides significant performance to malicious users attacking symmetric key systems.Since the performance of attacks using quantum computers depends on the efficiency of the quantum circuit of the encryption algorithms,research research on the implementation of quantum circuits is essential.This paper presents a new framework to construct quantum circuits of substitution boxes(S-boxes)using system modeling.We model the quantum circuits of S-boxes using two layers:Toffoli and linear layers.We generate vector spaces based on the values of qubits used in the linear layers and apply them to find quantum circuits.The framework finds the circuit bymatching elements of vector spaces generated fromthe input and output of a given S-box,using the forward search or themeet-in-the-middle strategy.We developed a tool to apply this framework to 4-bit S-boxes.While the 4-bit S-box quantum circuit construction tool LIGHTER-R only finds circuits that can be implemented with four qubits,the proposed tool achieves the circuits with five qubits.The proposed tool can find quantum circuits of 4-bit odd permutations based on the controlled NOT,NOT,and Toffoli gates,whereas LIGHTER-R is unable to perform this task in the same environment.We expect this technique to become a critical step toward optimizing S-box quantum circuits. 展开更多
关键词 System modeling quantum circuit S-box circuit quantum computer
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MET receptor tyrosine kinase promotes the generation of functional synapses in adult cortical circuits
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作者 Yuehua Cui Xiaokuang Ma +7 位作者 Jing Wei Chang Chen Neha Shakir Hitesch Guirram Zhiyu Dai Trent Anderson Deveroux Ferguson Shenfeng Qiu 《Neural Regeneration Research》 SCIE CAS 2025年第5期1431-1444,共14页
Loss of synapse and functional connectivity in brain circuits is associated with aging and neurodegeneration,however,few molecular mechanisms are known to intrinsically promote synaptogenesis or enhance synapse functi... Loss of synapse and functional connectivity in brain circuits is associated with aging and neurodegeneration,however,few molecular mechanisms are known to intrinsically promote synaptogenesis or enhance synapse function.We have previously shown that MET receptor tyrosine kinase in the developing cortical circuits promotes dendritic growth and dendritic spine morphogenesis.To investigate whether enhancing MET in adult cortex has synapse regenerating potential,we created a knockin mouse line,in which the human MET gene expression and signaling can be turned on in adult(10–12 months)cortical neurons through doxycycline-containing chow.We found that similar to the developing brain,turning on MET signaling in the adult cortex activates small GTPases and increases spine density in prefrontal projection neurons.These findings are further corroborated by increased synaptic activity and transient generation of immature silent synapses.Prolonged MET signaling resulted in an increasedα-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid/N-methyl-Daspartate(AMPA/NMDA)receptor current ratio,indicative of enhanced synaptic function and connectivity.Our data reveal that enhancing MET signaling could be an interventional approach to promote synaptogenesis and preserve functional connectivity in the adult brain.These findings may have implications for regenerative therapy in aging and neurodegeneration conditions. 展开更多
关键词 aging circuit connectivity cortical circuits molecular mechanisms neural regeneration NEURODEGENERATION synapses
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基于位移传感器的NFC数据抗干扰传输机制研究
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作者 严安军 钱钢 +2 位作者 袁琪 王骁军 向楠 《电子设计工程》 2024年第10期101-105,共5页
NFC数据传输受内部信号及外部环境干扰的影响,抗干扰传输机制对干扰信息的识别能力较差,导致抗干扰处理后信号依旧不稳定。为此提出基于位移传感器的NFC数据抗干扰传输机制。分析位移传感器编码机制,确定解码过程,利用数据编码实现干扰... NFC数据传输受内部信号及外部环境干扰的影响,抗干扰传输机制对干扰信息的识别能力较差,导致抗干扰处理后信号依旧不稳定。为此提出基于位移传感器的NFC数据抗干扰传输机制。分析位移传感器编码机制,确定解码过程,利用数据编码实现干扰检测和干扰定位。建立RS代码,分析多项式函数的乘法计算和除法计算过程,根据数学检测模型得到传输的波形信息,实现传输机制检测。实验结果表明,基于位移传感器的NFC数据抗干扰传输机制对干扰数据的识别准确率在99.95%以上,处理后信号稳定性极高。 展开更多
关键词 位移传感器 nfc数据 抗干扰传输 数据传输 传输机制 抗干扰研究
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Nullors, and Nullor Circuits;There Applications in Symbolic Circuit Analysis and Design
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作者 Reza Hashemian 《Applied Mathematics》 2024年第1期33-45,共13页
The objective in this presentation is to introduce some of the unique properties and applications of nullors in active circuit analysis and designs. The emphasis is to discuss the role nullors can play in symbolic rep... The objective in this presentation is to introduce some of the unique properties and applications of nullors in active circuit analysis and designs. The emphasis is to discuss the role nullors can play in symbolic representation of transfer functions. To show this we adopt the topological platform for the circuit analysis and use a recently developed Admittance Method (AM) to achieve the Sum of Tree Products (STP), replacing the determinant and cofactors of the Nodal Admittance Matrix (NAM) of the circuit. To construct a transfer function, we start with a given active circuit and convert all its controlled sources and I/O-ports to nullors. Now, with a solid nullor circuit (passive elements and nullors) we first eliminate the passive elements through AM operations. This produces the STPs. Second, the all-nullor circuit is then used to find the signs or the STPs. Finally, the transfer function (in symbolic, if chosen) is obtained from the ratio between the STPs. 展开更多
关键词 Admittance Method Analog circuits Nullors Nullor circuits Sum of Tree Products Transfer Functions
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基于MSPA-MCR-CIRCUIT的山西省运城市景观生态网络构建 被引量:1
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作者 许涛 樊鹤翔 +2 位作者 周可钦 李涵璟 王苗 《中国园林》 CSCD 北大核心 2024年第3期114-118,共5页
山西省运城市位于黄河中下游三省交界处,其景观要素成分复杂,对运城景观生态网络斑块与廊道的研究有利于黄河生态系统稳定性的保护。基于形态空间格局理论(MSPA)确定连通性强的核心斑块,识别核心生态源地,以最小累计阻力模型(MCR)为基础... 山西省运城市位于黄河中下游三省交界处,其景观要素成分复杂,对运城景观生态网络斑块与廊道的研究有利于黄河生态系统稳定性的保护。基于形态空间格局理论(MSPA)确定连通性强的核心斑块,识别核心生态源地,以最小累计阻力模型(MCR)为基础,叠加7种阻力因子构建综合阻力面,根据重力模型划分生态廊道等级。以基于电路理论(CIRCUIT)的Linkage Mapper工具识别生态夹点和障碍点作为生态节点,综合构建源地(面)-廊道(线)-节点(点)的运城市景观生态网络。结果表明:1)运城市核心生态源地有9处,综合重力模型和实际建设需求划分13条重要生态廊道和10条一般生态廊道,识别出关键生态节点17个,一般生态节点34个;2)现有重要生态廊道集中于运城南部,南北方向生态联系较弱,可优先加强贯穿稷山县、新绛县、闻喜县的重要生态廊道建设;3)MSPA模型与电路理论的综合运用可提升景观生态网络构建的科学性和准确性,有利于确定生态修复关键区域,为生态修复项目的布局提供有力支撑。 展开更多
关键词 风景园林 景观生态网络 形态空间格局理论 最小累计阻力模型 电路理论 源地-廊道-节点
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基于NFC的学生考勤管理系统的设计与应用
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作者 江荣娜 《科技创新与生产力》 2024年第5期39-42,共4页
为了加强学生上课行为、德育等考勤管理,本文以近场通信(NFC)为基础,设计、应用了一种近距离通信考勤管理系统,该系统的Web服务器为Nginx,数据传输以JSON格式HTTP数据包为主,同时引入终端Android平板,通过使用Microsoft Visual Studio... 为了加强学生上课行为、德育等考勤管理,本文以近场通信(NFC)为基础,设计、应用了一种近距离通信考勤管理系统,该系统的Web服务器为Nginx,数据传输以JSON格式HTTP数据包为主,同时引入终端Android平板,通过使用Microsoft Visual Studio开发的APP即可完成日常考勤、打卡、缺席登记等一系列功能,保证了考勤结果的准确性。 展开更多
关键词 nfc 管理系统 学生考勤
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Interplay between topology and localization on superconducting circuits
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作者 关欣 霍炳燕 陈刚 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第6期240-246,共7页
Topological insulators occupy a prominent position in the realm of condensed matter physics. Nevertheless, the presence of strong disorder has the potential to disrupt the integrity of topological states, leading to t... Topological insulators occupy a prominent position in the realm of condensed matter physics. Nevertheless, the presence of strong disorder has the potential to disrupt the integrity of topological states, leading to the localization of all states.This study delves into the intricate interplay between topology and localization within the one-dimensional Su–Schrieffer–Heeger(SSH) model, which incorporates controllable off-diagonal quasi-periodic modulations on superconducting circuits.Through the application of external alternating current(ac) magnetic fluxes, each transmon undergoes controlled driving,enabling independent tuning of all coupling strengths. Within a framework of this model, we construct comprehensive phase diagrams delineating regions characterized by extended topologically nontrivial states, critical localization, and coexisting topological and critical localization phases. The paper also addresses the dynamics of qubit excitations, elucidating distinct quantum state transfers resulting from the intricate interplay between topology and localization. Additionally, we propose a method for detecting diverse quantum phases utilizing existing experimental setups. 展开更多
关键词 TOPOLOGY LOCALIZATION superconducting circuits
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Carbon nanotube integrated circuit technology:purification,assembly and integration
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作者 Jianlei Cui Fengqi Wei Xuesong Mei 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第3期120-138,共19页
As the manufacturing process of silicon-based integrated circuits(ICs)approaches its physical limit,the quantum effect of silicon-based field-effect transistors(FETs)has become increasingly evident.And the burgeoning ... As the manufacturing process of silicon-based integrated circuits(ICs)approaches its physical limit,the quantum effect of silicon-based field-effect transistors(FETs)has become increasingly evident.And the burgeoning carbon-based semiconductor technology has become one of the most disruptive technologies in the post-Moore era.As one-dimensional nanomaterials,carbon nanotubes(CNTs)are far superior to silicon at the same technology nodes of FETs because of their excellent electrical transport and scaling properties,rendering them the most competitive material in the next-generation ICs technology.However,certain challenges impede the industrialization of CNTs,particularly in terms of material preparation,which significantly hinders the development of CNT-based ICs.Focusing on CNT-based ICs technology,this review summarizes its main technical status,development trends,existing challenges,and future development directions. 展开更多
关键词 carbon nanotubes integrated circuits field-effect transistors post-Moore
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In-situ deposited anti-aging TiN capping layer for Nb superconducting quantum circuits
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作者 Hao-Ran Tao Lei Du +8 位作者 Liang-Liang Guo Yong Chen Hai-Feng Zhang Xiao-Yan Yang Guo-Liang Xu Chi Zhang Zhi-Long Jia Peng Duan Guo-Ping Guo 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第9期133-137,共5页
The performance of Nb superconducting quantum devices is predominantly limited by dielectric loss at the metal–air interface,where Nb2O5 is considered the main loss source.Here,we suppress the formation of native oxi... The performance of Nb superconducting quantum devices is predominantly limited by dielectric loss at the metal–air interface,where Nb2O5 is considered the main loss source.Here,we suppress the formation of native oxides by in-situ deposition of a TiN capping layer on the Nb film.With TiN capping layers,no Nb2O5 forms on the surface of the Nb film.The quality factor Qi of the Nb resonator increases from 5.6×10^(5) to 7.9×10^(5) at low input power and from 6.8×10^(6) to 1.1×10^(7)at high input power.Furthermore,the TiN capping layer also shows good aging resistance in Nb resonator devices,with no significant performance fluctuations after one month of aging.These findings highlight the effectiveness of TiN capping layers in enhancing the performance and longevity of Nb superconducting quantum devices. 展开更多
关键词 ANTI-AGING oxidation dielectric loss Nb superconducting quantum circuits
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The circuitry landscape of perovskite solar cells:An in-depth analysis
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作者 Siddhi Vinayak Pandey Daniel Prochowicz +4 位作者 Apurba Mahapatra Saravanan Pandiaraj Abdullah N.Alodhayb Seckin Akin Pankaj Yadav 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第7期393-413,共21页
The extensive research and development in perovskite solar cells (PSCs) have rekindled the hopes of converting solar energy into electricity.An elusive understanding of underlying mechanisms is required for the develo... The extensive research and development in perovskite solar cells (PSCs) have rekindled the hopes of converting solar energy into electricity.An elusive understanding of underlying mechanisms is required for the development of efficient PSCs.Over the years,Impedance Spectroscopy (IS) characterization,along with complementary techniques,has proven to be an effective way to understand and analyze the charge transport and recombination at interface and bulk of PSCs.The IS of PSCs have been analyzed,interpreted,and improvised continuously,revealing intricate details about the work.However,there is a lack of centralized source of these details,which make it tougher to account for the generalized approach to understand the device properties.The present work is focused on compiling the research done on various PSC device architectures via IS to construct a comprehensive foundation of information on impedance plots,equivalent circuits,and associated processes. 展开更多
关键词 Impedance Spectroscopy Perovskite solar cells Equivalent circuits
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Correction of microwave pulse reflection by digital filters in superconducting quantum circuits
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作者 Liang-Liang Guo Peng Duan +9 位作者 Lei Du Hai-Feng Zhang Hao-Ran Tao Yong Chen Xiao-Yan Yang Chi Zhang Zhi-Long Jia Wei-Cheng Kong Zhao-Yun Chen Guo-Ping Guo 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第9期117-123,共7页
Reducing the control error is vital for high-fidelity digital and analog quantum operations.In superconducting circuits,one disagreeable error arises from the reflection of microwave signals due to impedance mismatch ... Reducing the control error is vital for high-fidelity digital and analog quantum operations.In superconducting circuits,one disagreeable error arises from the reflection of microwave signals due to impedance mismatch in the control chain.Here,we demonstrate a reflection cancelation method when considering that there are two reflection nodes on the control line.We propose to generate the pre-distortion pulse by passing the envelopes of the microwave signal through digital filters,which enables real-time reflection correction when integrated into the field-programmable gate array(FPGA).We achieve a reduction of single-qubit gate infidelity from 0.67%to 0.11%after eliminating microwave reflection.Real-time correction of microwave reflection paves the way for precise control and manipulation of the qubit state and would ultimately enhance the performance of algorithms and simulations executed on quantum processors. 展开更多
关键词 reflection cancelation digital filter single-qubit gate superconducting circuit
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