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Collaborative positioning for swarms:A brief survey of vision,LiDAR and wireless sensors based methods 被引量:1
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作者 Zeyu Li Changhui Jiang +3 位作者 Xiaobo Gu Ying Xu Feng zhou Jianhui Cui 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第3期475-493,共19页
As positioning sensors,edge computation power,and communication technologies continue to develop,a moving agent can now sense its surroundings and communicate with other agents.By receiving spatial information from bo... As positioning sensors,edge computation power,and communication technologies continue to develop,a moving agent can now sense its surroundings and communicate with other agents.By receiving spatial information from both its environment and other agents,an agent can use various methods and sensor types to localize itself.With its high flexibility and robustness,collaborative positioning has become a widely used method in both military and civilian applications.This paper introduces the basic fundamental concepts and applications of collaborative positioning,and reviews recent progress in the field based on camera,LiDAR(Light Detection and Ranging),wireless sensor,and their integration.The paper compares the current methods with respect to their sensor type,summarizes their main paradigms,and analyzes their evaluation experiments.Finally,the paper discusses the main challenges and open issues that require further research. 展开更多
关键词 Collaborative positioning VISION LIDAR Wireless sensors sensor fusion
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泛素结合酶E2变体蛋白对MEFs细胞衰老的影响
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作者 徐舜 骆诗凌 +2 位作者 谢健鸿 刘新光 袁源 《广东医科大学学报》 2023年第3期255-258,共4页
目的探讨泛素结合酶E2变体蛋白(UBE2V1)对MEFs细胞衰老的影响。方法Western blot检测UBE2V1在年轻(2月龄)和年老小鼠(24月龄)各组织中的表达差异,以荧光定量PCR及Western blot检测UBE2V1在年轻和衰老MEFs细胞中表达的差异,荧光定量PCR和... 目的探讨泛素结合酶E2变体蛋白(UBE2V1)对MEFs细胞衰老的影响。方法Western blot检测UBE2V1在年轻(2月龄)和年老小鼠(24月龄)各组织中的表达差异,以荧光定量PCR及Western blot检测UBE2V1在年轻和衰老MEFs细胞中表达的差异,荧光定量PCR和Western blot验证Ube2v1基因的siRNA沉默效果,β-半乳糖苷酶染色检测Ube2v1表达下调对MEFs细胞衰老的影响,Edu和Alarmar Blue检测Ube2v1基因沉默后MEFs细胞增殖能力的变化。结果UBE2V1在衰老小鼠的心脏、肝脏、肾脏和脑组织中表达下调,同时在衰老的MEFs细胞中也明显表达下调,在年轻细胞中沉默Ube2v1基因后β-半乳糖苷酶染色结果显示衰老的细胞数量明显增加,且Edu和Alarmar Blue检测发现Ube2v1基因沉默后MEFs细胞增殖能力显著下降。结论沉默Ube2v1可通过抑制MEFs细胞增殖,从而促进细胞衰老。 展开更多
关键词 UBE2V1 mefs 衰老
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阿什旦牦牛MEF2A基因拷贝数变异与生长性状关联分析
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作者 李大伟 任稳稳 +4 位作者 喇永富 马晓明 秦玉峰 扎西塔 梁春年 《中国草食动物科学》 CAS 北大核心 2024年第5期84-88,共5页
为探究MEF2A基因拷贝数变异对阿什旦牦牛生长性状的影响,测定了92头阿什旦牦牛6月龄、12月龄、18月龄、30月龄的体重、体高、体长、胸围,采用qPCR检测了MEF2A基因的相对表达量,并利用SPSS软件进行了关联分析。结果表明,MEF2A基因拷贝数... 为探究MEF2A基因拷贝数变异对阿什旦牦牛生长性状的影响,测定了92头阿什旦牦牛6月龄、12月龄、18月龄、30月龄的体重、体高、体长、胸围,采用qPCR检测了MEF2A基因的相对表达量,并利用SPSS软件进行了关联分析。结果表明,MEF2A基因拷贝数变异与阿什旦牦牛的18月龄胸围、6月龄体长呈极显著相关(P<0.01),与18月龄体高呈显著相关(P<0.05);6月龄体长正常型极显著高于其他两个类型(P<0.01),18月龄体高正常型显著低于增加型(P<0.05)、胸围缺失型和正常型极显著高于增加型(P<0.01);MEF2A基因在阿什旦牦牛肌肉组织中的表达量极显著高于其他组织(P<0.01)。综上,MEF2A基因拷贝数变异可影响阿什旦牦牛的生长发育。 展开更多
关键词 阿什旦牦牛 mef2A基因 拷贝数变异 生长性状 关联分析
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基于HDAC5/MEF2C通路探讨柴金解郁安神方调节失眠并发抑郁大鼠海马神经元突触可塑性的机制
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作者 任廷婷 王宇红 +8 位作者 唐璎娟 杨松 郭海鹏 王婷婷 何璎 李萍 赵洪庆 周梓洋 邹蔓姝 《中国药理学通报》 CAS CSCD 北大核心 2024年第7期1248-1257,共10页
目的基于组蛋白去乙酰酶5(histone deacetylase 5,HDAC5)/肌细胞增强因子2C(myocyte enhancer factor 2C,MEF2C)通路,探讨柴金解郁安神方调节失眠并发抑郁模型大鼠抑郁样行为及海马神经元突触可塑性的机制。方法通过对氯苯丙氨酸(PCPA)... 目的基于组蛋白去乙酰酶5(histone deacetylase 5,HDAC5)/肌细胞增强因子2C(myocyte enhancer factor 2C,MEF2C)通路,探讨柴金解郁安神方调节失眠并发抑郁模型大鼠抑郁样行为及海马神经元突触可塑性的机制。方法通过对氯苯丙氨酸(PCPA)注射联合慢性温和不可预知应激(chronic unpredictable mild stress,CUMS)建立失眠并发抑郁大鼠模型,实验分为空白组、模型组、柴金解郁安神方高、中、低剂量组、阳性药组。通过糖水偏好实验、旷场实验和水迷宫实验评估大鼠的抑郁情况;酶联免疫吸附检测(enzyme linked immunosorbent assay,ELISA)血清中5-羟色胺(5-hydroxytryptamine,5-HT)、多巴胺(dopamine,DA)的水平;HE染色和Nissl染色观察海马神经元病理损伤;高尔基染色(golgi staining)观察海马神经元树突棘损伤情况;免疫印迹法(Western blot)、免疫组化和免疫荧光法检测大鼠海马HDAC5、MEF2C、突触后致密物(postsynaptic density-95,PSD-95)和突触素(synaptophysin 1,SYN1)的表达情况。结果与模型组相比,柴金解郁安神方可以提高模型大鼠的糖水偏好率,减少旷场实验中的不动时间,增加总活动路程,缩短定位航行实验的逃避潜伏期,延长空间探索实验中平台所在象限的停留时间;此外,柴金解郁安神方还能改善海马神经元及树突棘的损伤,增加海马神经元的树突分支长度和树突棘密度;恢复失眠并发抑郁模型大鼠血清中5-HT、DA的水平;下调HDAC5蛋白,上调MEF2C、PSD-95、SYN1蛋白的表达。结论柴金解郁安神方可能通过降低HDAC5蛋白的表达,从而解除对转录因子MEF2C的抑制,促进PSD-95、SNY1蛋白的表达,发挥对海马神经元及突触的保护作用,从而缓解模型大鼠抑郁样行为。 展开更多
关键词 失眠并发抑郁 柴金解郁安神方 组蛋白乙酰化酶5(HDAC5) 肌细胞增强因子2C(mef2C) 神经元突触可塑性
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Rao Algorithms-Based Structure Optimization for Heterogeneous Wireless Sensor Networks 被引量:1
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作者 Shereen K.Refaay Samia A.Ali +2 位作者 Moumen T.El-Melegy Louai A.Maghrabi Hamdy H.El-Sayed 《Computers, Materials & Continua》 SCIE EI 2024年第1期873-897,共25页
The structural optimization of wireless sensor networks is a critical issue because it impacts energy consumption and hence the network’s lifetime.Many studies have been conducted for homogeneous networks,but few hav... The structural optimization of wireless sensor networks is a critical issue because it impacts energy consumption and hence the network’s lifetime.Many studies have been conducted for homogeneous networks,but few have been performed for heterogeneouswireless sensor networks.This paper utilizes Rao algorithms to optimize the structure of heterogeneous wireless sensor networks according to node locations and their initial energies.The proposed algorithms lack algorithm-specific parameters and metaphorical connotations.The proposed algorithms examine the search space based on the relations of the population with the best,worst,and randomly assigned solutions.The proposed algorithms can be evaluated using any routing protocol,however,we have chosen the well-known routing protocols in the literature:Low Energy Adaptive Clustering Hierarchy(LEACH),Power-Efficient Gathering in Sensor Information Systems(PEAGSIS),Partitioned-based Energy-efficient LEACH(PE-LEACH),and the Power-Efficient Gathering in Sensor Information Systems Neural Network(PEAGSIS-NN)recent routing protocol.We compare our optimized method with the Jaya,the Particle Swarm Optimization-based Energy Efficient Clustering(PSO-EEC)protocol,and the hybrid Harmony Search Algorithm and PSO(HSA-PSO)algorithms.The efficiencies of our proposed algorithms are evaluated by conducting experiments in terms of the network lifetime(first dead node,half dead nodes,and last dead node),energy consumption,packets to cluster head,and packets to the base station.The experimental results were compared with those obtained using the Jaya optimization algorithm.The proposed algorithms exhibited the best performance.The proposed approach successfully prolongs the network lifetime by 71% for the PEAGSIS protocol,51% for the LEACH protocol,10% for the PE-LEACH protocol,and 73% for the PEGSIS-NN protocol;Moreover,it enhances other criteria such as energy conservation,fitness convergence,packets to cluster head,and packets to the base station. 展开更多
关键词 Wireless sensor networks Rao algorithms OPTIMIZATION LEACH PEAGSIS
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LncRNA MEF2C-AS1对卵巢癌生物学功能的影响及机制研究
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作者 邹丹 邓玥 +1 位作者 董莹 杨丽华 《现代妇产科进展》 2024年第11期801-805,共5页
目的:探索LncRNA MEF2C-AS1在卵巢癌恶性表型中的生物学功能及机制。方法:RT-qPCR法检测LncRNA MEF2C-AS1在人卵巢癌细胞及卵巢上皮细胞株中的表达水平。用LncRNA MEF2C-AS1过表达慢病毒LV-MEF2C-AS1及阴性对照病毒LV-NC转染A2780细胞,... 目的:探索LncRNA MEF2C-AS1在卵巢癌恶性表型中的生物学功能及机制。方法:RT-qPCR法检测LncRNA MEF2C-AS1在人卵巢癌细胞及卵巢上皮细胞株中的表达水平。用LncRNA MEF2C-AS1过表达慢病毒LV-MEF2C-AS1及阴性对照病毒LV-NC转染A2780细胞,将细胞分为LV-MEF2C-AS1、LV-NC组,分别通过CCK-8实验、克隆形成实验、Transwell侵袭实验、划痕实验及流式细胞术检测两组A2780细胞的增殖活力、克隆形成能力、侵袭能力、迁移能力及细胞的周期分布和凋亡情况。Western blot实验检测两组细胞中细胞周期相关蛋白CyclinD1和细胞凋亡相关蛋白Caspase 3、Bcl-2、Bax及GRB7水平。结果:卵巢癌SKOV3、OVCAR3和A2780细胞中LncRNA MEF2C-AS1水平显著低于卵巢上皮IOSE80细胞,在A2780细胞中表达最低(P<0.05);LV-MEF2C-AS1组的细胞增殖活力、克隆形成数、细胞迁移能力及侵袭能力均明显低于LV-NC组(P<0.05),凋亡细胞数、凋亡率显著高于LV-NC组(P<0.05);与LV-NC组相比,LV-MEF2C-AS1组处于S期和G2期的细胞百分比较高,而处于G1期细胞百分比较低(P<0.05);LV-MEF2C-AS1组卵巢癌A2780细胞中Bax和Caspase 3水平显著高于LV-NC组,而Bcl-2、CyclinD1和GRB7水平明显低于LV-NC组(P<0.05)。结论:LncRNA MEF2C-AS1在卵巢癌细胞中表达下调,过表达LncRNA MEF2C-AS1可显著抑制卵巢癌细胞的增殖、侵袭、迁移。过表达LncRNA MEF2C-AS1可降低GRB7表达水平,其可能通过下调GRB7水平抑制卵巢癌细胞的恶性生物学行为。 展开更多
关键词 卵巢癌 LncRNA mef2C-AS1 细胞增殖 细胞侵袭
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Electrochemical biosensors for point-of-care testing 被引量:1
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作者 Jinsol Kim Juho Jeong Seung Hwan Ko 《Bio-Design and Manufacturing》 SCIE EI CAS CSCD 2024年第4期548-565,共18页
Point-of-care testing(POCT)is the practice of diagnosing and monitoring diseases where the patient is located,as opposed to traditional treatment conducted solely in a medical laboratory or other clinical setting.POCT... Point-of-care testing(POCT)is the practice of diagnosing and monitoring diseases where the patient is located,as opposed to traditional treatment conducted solely in a medical laboratory or other clinical setting.POCT has been less common in the recent past due to a lack of portable medical devices capable of facilitating effective medical testing.However,recent growth has occurred in this field due to advances in diagnostic technologies,device miniaturization,and progress in wearable electronics.Among these developments,electrochemical sensors have attracted interest in the POCT field due to their high sensitivity,compact size,and affordability.They are used in various applications,from disease diagnosis to health status monitoring.In this paper we explore recent advancements in electrochemical sensors,the methods of fabricating them,and the various types of sensing mechanisms that can be used.Furthermore,we delve into methods for immobilizing specific biorecognition elements,including enzymes,antibodies,and aptamers,onto electrode surfaces and how these sensors are used in real-world POCT settings. 展开更多
关键词 Point-of-care testing(POCT) Electrochemical sensor ENZYME ANTIBODY Health care
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MXene-Based Elastomer Mimetic StretchableSensors: Design, Properties, and Applications 被引量:1
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作者 Poushali Das Parham Khoshbakht Marvi +5 位作者 Sayan Ganguly Xiaowu(Shirley)Tang Bo Wang Seshasai Srinivasan Amin Reza Rajabzadeh Andreas Rosenkranz 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第7期295-342,共48页
Flexible sensors based on MXene-polymer composites are highly prospective for next-generation wearable electronics used in human-machine interfaces.One of the motivating factors behind the progress of flexible sensors... Flexible sensors based on MXene-polymer composites are highly prospective for next-generation wearable electronics used in human-machine interfaces.One of the motivating factors behind the progress of flexible sensors is the steady arrival of new conductive materials.MXenes,a new family of 2D nanomaterials,have been draw-ing attention since the last decade due to their high electronic conduc-tivity,processability,mechanical robustness and chemical tunability.In this review,we encompass the fabrication of MXene-based polymeric nanocomposites,their structure-property relationship,and applications in the flexible sensor domain.Moreover,our discussion is not only lim-ited to sensor design,their mechanism,and various modes of sensing platform,but also their future perspective and market throughout the world.With our article,we intend to fortify the bond between flexible matrices and MXenes thus promoting the swift advancement of flexible MXene-sensors for wearable technologies. 展开更多
关键词 Flexible sensor 2D nanomaterials MXene Wearable and conductive Applications
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UAV-assisted data collection for wireless sensor networks with dynamic working modes 被引量:1
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作者 Jie Chen Jianhua Tang 《Digital Communications and Networks》 SCIE CSCD 2024年第3期805-812,共8页
Wireless Sensor Network(WSN)is a cornerstone of Internet of Things(IoT)and has rich application scenarios.In this work,we consider a heterogeneous WSN whose sensor nodes have a diversity in their Residual Energy(RE).I... Wireless Sensor Network(WSN)is a cornerstone of Internet of Things(IoT)and has rich application scenarios.In this work,we consider a heterogeneous WSN whose sensor nodes have a diversity in their Residual Energy(RE).In this work,to protect the sensor nodes with low RE,we investigate dynamic working modes for sensor nodes which are determined by their RE and an introduced energy threshold.Besides,we employ an Unmanned Aerial Vehicle(UAV)to collect the stored data from the heterogeneous WSN.We aim to jointly optimize the cluster head selection,energy threshold and sensor nodes’working mode to minimize the weighted sum of energy con-sumption from the WSN and UAV,subject to the data collection rate constraint.To this end,we propose an efficient search method to search for an optimal energy threshold,and develop a penalty-based successive convex approximation algorithm to select the cluster heads.Then we present a low-complexity iterative approach to solve the joint optimization problem and discuss the implementation procedure.Numerical results justify that our proposed approach is able to reduce the energy consumption of the sensor nodes with low RE significantly and also saves energy for the whole WSN. 展开更多
关键词 Unmanned aerial vehicle Wireless sensor networks Cluster heads Dynamic working modes
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Intelligent Recognition Using Ultralight Multifunctional Nano‑Layered Carbon Aerogel Sensors with Human‑Like Tactile Perception 被引量:1
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作者 Huiqi Zhao Yizheng Zhang +8 位作者 Lei Han Weiqi Qian Jiabin Wang Heting Wu Jingchen Li Yuan Dai Zhengyou Zhang Chris RBowen Ya Yang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第1期172-186,共15页
Humans can perceive our complex world through multi-sensory fusion.Under limited visual conditions,people can sense a variety of tactile signals to identify objects accurately and rapidly.However,replicating this uniq... Humans can perceive our complex world through multi-sensory fusion.Under limited visual conditions,people can sense a variety of tactile signals to identify objects accurately and rapidly.However,replicating this unique capability in robots remains a significant challenge.Here,we present a new form of ultralight multifunctional tactile nano-layered carbon aerogel sensor that provides pressure,temperature,material recognition and 3D location capabilities,which is combined with multimodal supervised learning algorithms for object recognition.The sensor exhibits human-like pressure(0.04–100 kPa)and temperature(21.5–66.2℃)detection,millisecond response times(11 ms),a pressure sensitivity of 92.22 kPa^(−1)and triboelectric durability of over 6000 cycles.The devised algorithm has universality and can accommodate a range of application scenarios.The tactile system can identify common foods in a kitchen scene with 94.63%accuracy and explore the topographic and geomorphic features of a Mars scene with 100%accuracy.This sensing approach empowers robots with versatile tactile perception to advance future society toward heightened sensing,recognition and intelligence. 展开更多
关键词 Multifunctional sensor Tactile perception Multimodal machine learning algorithms Universal tactile system Intelligent object recognition
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Force and impulse multi-sensor based on flexible gate dielectric field effect transistor
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作者 Chao Tan Junling Lü +3 位作者 Chunchi Zhang Dong Liang Lei Yang Zegao Wang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS 2025年第1期214-220,共7页
Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other fields.Two-dimensional material-based filed effect transistor(2D-FET)sensors are competitive ... Nowadays,force sensors play an important role in industrial production,electronic information,medical health,and many other fields.Two-dimensional material-based filed effect transistor(2D-FET)sensors are competitive with nano-level size,lower power consumption,and accurate response.However,few of them has the capability of impulse detection which is a path function,expressing the cumulative effect of the force on the particle over a period of time.Herein we fabricated the flexible polymethyl methacrylate(PMMA)gate dielectric MoS_(2)-FET for force and impulse sensor application.We systematically investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signals(I_(ds))to the detected impulse(I).The applied force was detected and recorded by I_(ds)with a low power consumption of~30 nW.The sensitivity of the device can reach~8000%and the 4×1 sensor array is able to detect and locate the normal force applied on it.Moreover,there was almost no performance loss for the device as left in the air for two months. 展开更多
关键词 flexible gate dielectric transistor force sensor impulse sensor force sensor array
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Progress of Proximity Sensors for Potential Applications in Electronic Skins
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作者 Runnan Zou Yanhong Tong +3 位作者 Jiayi Liu Jing Sun Da Xian Qingxin Tang 《Transactions of Tianjin University》 EI CAS 2024年第1期40-62,共23页
Recently,electronic skins and fl exible wearable devices have been developed for widespread applications in medical monitoring,artifi cial intelligence,human–machine interaction,and artifi cial prosthetics.Flexible p... Recently,electronic skins and fl exible wearable devices have been developed for widespread applications in medical monitoring,artifi cial intelligence,human–machine interaction,and artifi cial prosthetics.Flexible proximity sensors can accurately perceive external objects without contact,introducing a new way to achieve an ultrasensitive perception of objects.This article reviews the progress of fl exible capacitive proximity sensors,fl exible triboelectric proximity sensors,and fl exible gate-enhanced proximity sensors,focusing on their applications in the electronic skin fi eld.Herein,their working mechanism,materials,preparation methods,and research progress are discussed in detail.Finally,we summarize the future challenges in developing fl exible proximity sensors. 展开更多
关键词 Capacitive proximity sensors Triboelectric proximity sensors Gate-enhanced proximity sensors Flexible wearable devices Electronic skins
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Flexible piezoresistive pressure sensor based on a graphene-carbon nanotube-polydimethylsiloxane composite
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作者 Huifen Wei Xiangmeng Li +2 位作者 Fangping Yao Xinyu Feng Xijing Zhu 《Nanotechnology and Precision Engineering》 EI CAS CSCD 2024年第3期35-44,共10页
Flexible sensors are used widely in wearable devices, specifically flexible piezoresistive sensors, which are common and easy to manipulate.However, fabricating such sensors is expensive and complex, so proposed here ... Flexible sensors are used widely in wearable devices, specifically flexible piezoresistive sensors, which are common and easy to manipulate.However, fabricating such sensors is expensive and complex, so proposed here is a simple fabrication approach involving a sensor containing microstructures replicated from a sandpaper template onto which polydimethylsiloxane containing a mixture of graphene and carbon nanotubes is spin coated. The surface morphologies of three versions of the sensor made using different grades of sandpaper are observed, and the corresponding pressure sensitivities and linearity and hysteresis characteristics are assessed and analyzed. The results show that the sensor made using 80-mesh sandpaper has the best sensing performance. Its sensitivity is 0.341 kPa-1in the loading range of 0–1.6 kPa, it responds to small external loading of 100 Pa with a resistance change of 10%, its loading and unloading response times are 0.126 and 0.2 s, respectively,and its hysteresis characteristic is ~7%, indicating that the sensor has high sensitivity, fast response, and good stability. Thus, the presented piezoresistive sensor is promising for practical applications in flexible wearable electronics. 展开更多
关键词 Piezoresistive sensor Flexible sensor GRAPHENE Carbon nanotube Polymer composite Microstructure
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Overcoming the Limits of Cross-Sensitivity:Pattern Recognition Methods for Chemiresistive Gas Sensor Array
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作者 Haixia Mei Jingyi Peng +4 位作者 Tao Wang Tingting Zhou Hongran Zhao Tong Zhang Zhi Yang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第12期285-341,共57页
As information acquisition terminals for artificial olfaction,chemiresistive gas sensors are often troubled by their cross-sensitivity,and reducing their cross-response to ambient gases has always been a difficult and... As information acquisition terminals for artificial olfaction,chemiresistive gas sensors are often troubled by their cross-sensitivity,and reducing their cross-response to ambient gases has always been a difficult and important point in the gas sensing area.Pattern recognition based on sensor array is the most conspicuous way to overcome the cross-sensitivity of gas sensors.It is crucial to choose an appropriate pattern recognition method for enhancing data analysis,reducing errors and improving system reliability,obtaining better classification or gas concentration prediction results.In this review,we analyze the sensing mechanism of crosssensitivity for chemiresistive gas sensors.We further examine the types,working principles,characteristics,and applicable gas detection range of pattern recognition algorithms utilized in gas-sensing arrays.Additionally,we report,summarize,and evaluate the outstanding and novel advancements in pattern recognition methods for gas identification.At the same time,this work showcases the recent advancements in utilizing these methods for gas identification,particularly within three crucial domains:ensuring food safety,monitoring the environment,and aiding in medical diagnosis.In conclusion,this study anticipates future research prospects by considering the existing landscape and challenges.It is hoped that this work will make a positive contribution towards mitigating cross-sensitivity in gas-sensitive devices and offer valuable insights for algorithm selection in gas recognition applications. 展开更多
关键词 Pattern recognition sensor array Chemiresistive gas sensor CROSS-SENSITIVITY Artificial olfactory
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Solution-processing approach of nanomaterials toward an artificial sensory system
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作者 Okin Song Youngwook Cho +1 位作者 Soo-Yeon Cho Joohoon Kang 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第5期1-19,共19页
Artificial sensory systems have emerged as pivotal technologies to bridge the gap between the virtual and real-world,replicating human senses to interact intelligently with external stimuli.To practically apply artifi... Artificial sensory systems have emerged as pivotal technologies to bridge the gap between the virtual and real-world,replicating human senses to interact intelligently with external stimuli.To practically apply artificial sensory systems in the real-world,it is essential to mass-produce nanomaterials with ensured sensitivity and selectivity,purify them for desired functions,and integrate them into large-area sensory devices through assembly techniques.A comprehensive understanding of each process parameter from material processing to device assembly is crucial for achieving a high-performing artificial sensory system.This review provides a technological framework for fabricating high-performance artificial sensory systems,covering material processing to device integrations.We introduce recent approaches for dispersing and purifying various nanomaterials including 0D,1D,and 2D nanomaterials.We then highlight advanced coating and printing techniques of the solution-processed nanomaterials based on representative three methods including(i)evaporation-based assembly,(ii)assisted assembly,and(iii)direct patterning.We explore the application and performances of these solution-processed materials and printing methods in fabricating sensory devices mimicking five human senses including vision,olfaction,gustation,hearing,and tactile perception.Finally,we suggest an outlook for possible future research directions to solve the remaining challenges of the artificial sensory systems such as ambient stability,device consistency,and integration with AI-based software. 展开更多
关键词 artificial sensory system NANOMATERIALS solution-processing PRINTING sensor
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Holistic and localized preparation methods for triboelectric sensors:principles,applications and perspectives
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作者 Zhenqiu Gao Shaokuan Wu +6 位作者 Yihan Wei Mervat Ibrahim Hani Nasser Abdelhamid Guyu Jiang Jun Cao Xuhui Sun Zhen Wen 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第5期20-36,共17页
With the arrival of intelligent terminals,triboelectric nanogenerators,as a new kind of energy converter,are considered one of the most important technologies for the next generation of intelligent electronics.As a se... With the arrival of intelligent terminals,triboelectric nanogenerators,as a new kind of energy converter,are considered one of the most important technologies for the next generation of intelligent electronics.As a self-powered sensor,it can greatly reduce the power consumption of the entire sensing system by transforming external mechanical energy to electricity.However,the fabrication method of triboelectric sensors largely determines their functionality and performance.This review provides an overview of various methods used to fabricate triboelectric sensors,with a focus on the processes of micro-electro-mechanical systems technology,three-dimensional printing,textile methods,template-assisted methods,and material synthesis methods for manufacturing.The working mechanisms and suitable application scenarios of various methods are outlined.Subsequently,the advantages and disadvantages of various methods are summarized,and reference schemes for the subsequent application of these methods are included.Finally,the opportunities and challenges faced by different methods are discussed,as well as their potential for application in various intelligent systems in the Internet of Things. 展开更多
关键词 triboelectric sensor fabrication methods intelligent system holistic-to-localized
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Advances of Electrochemical and Electrochemiluminescent Sensors Based on Covalent Organic Frameworks
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作者 Yue Cao Ru Wu +2 位作者 Yan‑Yan Gao Yang Zhou Jun‑Jie Zhu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第2期395-422,共28页
Covalent organic frameworks(COFs),a rapidly developing category of crystalline conjugated organic polymers,possess highly ordered structures,large specific surface areas,stable chemical properties,and tunable pore mic... Covalent organic frameworks(COFs),a rapidly developing category of crystalline conjugated organic polymers,possess highly ordered structures,large specific surface areas,stable chemical properties,and tunable pore microenvironments.Since the first report of boroxine/boronate ester-linked COFs in 2005,COFs have rapidly gained popularity,showing important application prospects in various fields,such as sensing,catalysis,separation,and energy storage.Among them,COFs-based electrochemical(EC)sensors with upgraded analytical performance are arousing extensive interest.In this review,therefore,we summarize the basic properties and the general synthesis methods of COFs used in the field of electroanalytical chemistry,with special emphasis on their usages in the fabrication of chemical sensors,ions sensors,immunosensors,and aptasensors.Notably,the emerged COFs in the electrochemiluminescence(ECL)realm are thoroughly covered along with their preliminary applications.Additionally,final conclusions on state-of-the-art COFs are provided in terms of EC and ECL sensors,as well as challenges and prospects for extending and improving the research and applications of COFs in electroanalytical chemistry. 展开更多
关键词 Covalent organic frameworks ELECTROCHEMISTRY ELECTROCHEMILUMINESCENCE sensorS
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Recent progress on nanomaterial-based electrochemical dissolved oxygen sensors
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作者 Shaoqi Zhang Tao Liu +1 位作者 Zhenyu Chu Wanqin Jin 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第4期103-119,共17页
Dissolved oxygen(DO)usually refers to the amount of oxygen dissolved in water.In the environment,medicine,and fermentation industries,the DO level needs to be accurate and capable of online monitoring to guide the pre... Dissolved oxygen(DO)usually refers to the amount of oxygen dissolved in water.In the environment,medicine,and fermentation industries,the DO level needs to be accurate and capable of online monitoring to guide the precise control of water quality,clinical treatment,and microbial metabolism.Compared with other analytical methods,the electrochemical strategy is superior in its fast response,low cost,high sensitivity,and portable device.However,an electrochemical DO sensor faces a trade-off between sensitivity and long-term stability,which strongly limits its practical applications.To solve this problem,various advanced nanomaterials have been proposed to promote detection performance owing to their excellent electrocatalysis,conductivity,and chemical stability.Therefore,in this review,we focus on the recent progress of advanced nanomaterial-based electrochemical DO sensors.Through the comparison of the working principles on the main analysis techniques toward DO,the advantages of the electrochemical method are discussed.Emphasis is placed on recently developed nanomaterials that exhibit special characteristics,including nanostructures and preparation routes,to benefit DO determination.Specifically,we also introduce some interesting research on the configuration design of the electrode and device,which is rarely introduced.Then,the different requirements of the electrochemical DO sensors in different application fields are included to provide brief guidance on the selection of appropriate nanomaterials.Finally,the main challenges are evaluated to propose future development prospects and detection strategies for nanomaterial-based electrochemical sensors. 展开更多
关键词 NANOMATERIAL Dissolved oxygen Electrochemical sensor NANOSTRUCTURES Detection principles
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Wear dependent virtual flow rate sensor for progressing cavity pumps with deformable stator
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作者 Jens Müller Sebastian Leonow +2 位作者 Johannes Schulz Christian Hansen Martin Monnigmann 《Petroleum Science》 SCIE EI CAS CSCD 2024年第2期1346-1353,共8页
This contribution presents a novel wear dependent virtual flow rate sensor for single stage single lobe progressing cavity pumps. We study the wear-induced material loss of the pump components and the impact of this m... This contribution presents a novel wear dependent virtual flow rate sensor for single stage single lobe progressing cavity pumps. We study the wear-induced material loss of the pump components and the impact of this material loss on the volumetric efficiency. The results are combined with an established backflow model to implement a backflow calculation procedure that is adaptive to wear. We use a laboratory test setup with a highly abrasive fluid and operate a pump from new to worn condition to validate our approach. The obtained measurement data show that the presented virtual sensor is capable of calculating the flow rate of a pump being subject to wear during its regular operation. 展开更多
关键词 BACKFLOW Progressing cavity pump Virtual sensor WEAR
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A Review on Soft Ionic Touch Point Sensors
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作者 Gibeom Lee Donghyun Lee +1 位作者 Gwang-Bum Im Younghoon Lee 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第6期193-208,共16页
A touch sensor is an essential component in meeting the growing demand for human-machine interfaces.These sensors have been developed in wearable,attachable,and even implantable forms to acquire a wide range of inform... A touch sensor is an essential component in meeting the growing demand for human-machine interfaces.These sensors have been developed in wearable,attachable,and even implantable forms to acquire a wide range of information from humans.To be applied to the human body,sensors are required to be biocompatible and not restrict the natural movement of the body.Ionic materials are a promising candidate for soft touch sensors due to their outstanding properties,which include high stretchability,transparency,ionic conductivity,and biocompatibility.Here,this review discusses the unique features of soft ionic touch point sensors,focusing on the ionic material and its key role in the sensor.The touch sensing mechanisms include piezocapacitive,piezoresistive,surface capacitive,piezoelectric,and triboelectric and triboresistive sensing.This review analyzes the implementation hurdles and future research directions of the soft ionic touch sensors for their transformative potential. 展开更多
关键词 iontronics ionic materials soft materials touch sensors
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