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Flexible micro flow sensor for micro aerial vehicles
Rong ZHU, Ruiyi QUE, Peng LIU
《机械工程前沿(英文)》 2017年 第12卷 第4期 页码 539-545 doi: 10.1007/s11465-017-0427-0
This article summarizes our studies on micro flow sensors fabricated on a flexible polyimide circuit board by a low-cost hybrid process of thin-film deposition and circuit printing. The micro flow sensor has merits of flexibility, structural simplicity, easy integrability with circuits, and good sensing performance. The sensor, which adheres to an object surface, can detect the surface flow around the object. In our study, we install the fabricated micro flow sensors on micro aerial vehicles (MAVs) to detect the surface flow variation around the aircraft wing and deduce the aerodynamic parameters of the MAVs in flight. Wind tunnel experiments using the sensors integrated with the MAVs are also conducted.
关键词: micro flow sensor flexible sensor surface flow sensing aerodynamic parameter micro aerial vehicle (MAV)
Xuanru Zhang,Jia Wen Zhu,Tie Jun Cui,
《工程(英文)》 doi: 10.1016/j.eng.2023.05.013
关键词: Spoof surface plasmons Internet of Things Integrated sensing Resonance tracking Microwave sensing
Manuel J. GOMES, Ning MEI
《能源前沿(英文)》 2020年 第14卷 第1期 页码 114-126 doi: 10.1007/s11708-017-0483-5
关键词: rising liquid film combined flow thermo-capillary flow buoyant flow metallic mesh tube horizontal tube
Simulation of cross-flow-induced vibration of tube bundle by surface vorticity method
WANG Fenghao, JIANG Gedong, Lin John Zhang
《能源前沿(英文)》 2008年 第2卷 第3期 页码 243-248 doi: 10.1007/s11708-008-0049-7
关键词: dominant sub-critical Reynolds staggered Vorticity three-row
ZHAO Honglei, WANG Songtao, HAN Wanjin, FENG Guotai
《能源前沿(英文)》 2008年 第2卷 第1期 页码 93-98 doi: 10.1007/s11708-008-0007-4
Wenlu Li, John D. Fortner
《环境科学与工程前沿(英文)》 2020年 第14卷 第5期 doi: 10.1007/s11783-020-1256-7
关键词: Superparamagnetic nanoparticles Surface functionalization Environmental sensing Heavy metal ion sorption
穆彦虎, 马巍, 杨朝晖, 栗晓林, 张坤, 毛运城
《工程(英文)》 2022年 第14卷 第7期 页码 169-180 doi: 10.1016/j.eng.2021.10.020
块碎石、通风管和热管等主动冷却措施广泛应用于冻土区工程建设,通过强化冷季与外界空气的换热过程降低下伏多年冻土的温度,进而确保气候变暖背景下工程构筑物的长期稳定性。对于气冷类主动冷却措施而言,对流换热过程至关重要,因此掌握构筑物周边流场特征具有重要的意义。结合青藏高原北麓河高等级公路试验示范工程,沿垂直于路基走向的横剖面开展了路基周边近地表流场的长期定位观测。基于6 个观测塔完整的一年观测数据,研究了路基两侧60 m范围内地面以上0.5 m、1.5 m、3.0 m和4.5 m高度上风速、风向的空间分布特征及季节变化规律。结果表明,路基的存在对近地表流场有显著的影响,在背风侧的影响距离可达10 倍路基高度。路基周边近地表风速沿高度的分布可用综合幂次律描述,幂次值为0.14~0.4;远离路基位置幂次值年均水平为0.19,与以往研究中常用值存在差异。讨论了近地表风场的空间分布和季节变化对包括块石、通风管等气冷路基结构工作机制和长期效果的影响,认为低估近地表风场速度剖面的幂次值、忽略风向的季节变化可能导致气冷类主动冷却降温措施设计的不足。现场测试结果可为高原冻土区工程建设提供有益参考。
Novel sensing techniques for full-scale testing of civil structures
Kaoshan DAI, Zhenhua HUANG
《结构与土木工程前沿(英文)》 2012年 第6卷 第3期 页码 240-256 doi: 10.1007/s11709-012-0172-8
关键词: sensing technique full-scale testing wireless sensor remote sensing LiDAR laser vibrometer
Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium
M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 439-444 doi: 10.1007/s11465-012-0337-0
Abrasive waterjet cutting is a novel machining process capable of processing wide range of hard-to-cut materials. Surface roughness of machined parts is one of the major machining characteristics that play an important role in determining the quality of engineering components. This paper shows the influence of process parameters on surface roughness (Ra) which is an important cutting performance measure in abrasive waterjet cutting of aluminium. Taguchi’s design of experiments was carried out in order to collect surface roughness values. Experiments were conducted in varying water pressure, nozzle traverse speed, abrasive mass flow rate and standoff distance for cutting aluminium using abrasive waterjet cutting process. The effects of these parameters on surface roughness have been studied based on the experimental results.
关键词: abrasive waterjet aluminium garnet water pressure mass flow rate traverse speed standoff distance
表面"彩虹"上的超分辨率光谱位移传感 Article
Lyu Zhou, Nan Zhang, Chang Chieh Hsu, Matthew Singer, Xie Zeng, Yizheng Li, Haomin Song, Josep Jornet, Yun Wu, Qiaoqiang Gan
《工程(英文)》 2022年 第17卷 第10期 页码 75-81 doi: 10.1016/j.eng.2022.03.018
高精度的亚波长光波操纵在光谱学、传感和医学成像中可实现令人兴奋的新颖应用。这些应用中理想的目标是可实现光谱信息片上分析的小型化光谱仪。特别地,对于基于成像系统的光谱传感机制,其关键挑战是如何实现精准的空间信息分辨(即波长偏移或生物、化学表面结合引起的空间位移),这类似于超分辨率成像所带来的挑战。本文中,我们报道了一种特殊的可以捕获“彩虹”的超表面,并将其应用于芯片光谱仪和传感器。结合超分辨图像处理,通过低设置4×光学显微镜系统可分辨出等离子体“彩虹”捕获超表面上35 nm范围内共振位置的位移,同时该超表面的面积小至0.002 mm2。这种可实现高效耦合的“彩虹”等离子体共振空间操纵的独特特征为小型化片上光谱分析提供了一个新的平台,其光谱分辨率为0.032 nm波长偏移。通过使用该低设置4×光学显微镜成像系统,我们展示了A549 外泌体的生物传感分辨率为1.92×109个∙mL−1,并使用外泌体表皮生长因子受体(EGFR)的表达值来区分患者样本和健康对照样本,从而展示了一种精确特异性生物/化学传感检测应用的新型片上传感系统。
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 627-638 doi: 10.15302/J-FASE-2023516
The agricultural and livestock activities surrounding the rivers flowing into the lakes have caused non-point source pollution, leading to excessive amounts of nutrient salts in downstream rivers. Introducing river water into constructed wetlands along river course has proven to be an effective solution for decreasing nitrogen (N) and phosphorus (P) loads. This paper reports 9 years of monitoring the Yong’an River and its surrounding constructed wetlands in the upper reaches of Erhai Lake, located in Yunnan Province, China. This study analyzed the main types of pollutants in the river, and evaluated the removal efficiency of pollutants by the constructed wetlands. The findings indicate that total nitrogen (TN) and nitrate nitrogen (NO3–-N) are the primary pollutants in the Yong’an River, which exhibit variation throughout the year corresponding to the alternating wet and dry seasons. Although constructed wetlands are effective in removing NO3–-N and P, their efficacy in removing ammonium nitrogen (NH4+-N) and organic pollutants is limited. This limitation can be attributed to the lack of timely disposal of aquatic plant residues. This research contributes to the understanding of the potential issues that may arise during the extended use of constructed wetlands and provides solutions to address them.
关键词: inflowing rivers surface-flow constructed wetland nutrients long-term monitoring
Several basic problems in plastic theory of geomaterials
Yuanxue LIU, Jiawu ZHOU, Zhongyou LI, Chen CHEN, Yingren ZHENG
《结构与土木工程前沿(英文)》 2009年 第3卷 第1期 页码 81-84 doi: 10.1007/s11709-009-0016-3
关键词: constitutive relation geomaterials classial plastic theory Drucker Postulate yield surface flow rule
姜景山,王振占,李芸
《中国工程科学》 2008年 第10卷 第6期 页码 16-22
微波探测仪是嫦娥1号卫星有效载荷之一,主要用于测量不同深度的月壤微波辐射亮温,进而反演月壤厚度的信息并对月球的3He资源量和分布进行评估。这是国际上第一次利用被动微波遥感探测器在月球轨道直接测量月表亮温信息。因此,对月壤辐射传输模型的研究是及其必要的。文章分析了月球微波探测的机理和存在的问题,并给出了初步解决途径。
《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1495-2
• Quorum sensing enhancement and inhibition methods are summarized.
关键词: Quorum sensing Biological waste treatment Biofilm formation
Plasma-enabled sensing of urea and related amides on polyaniline
Harinarayanan Puliyalil,Petr Slobodian,Michal Sedlacik,Ruhan Benlikaya,Pavel Riha,Kostya (Ken) Ostrikov,Uroš Cvelbar
《化学科学与工程前沿(英文)》 2016年 第10卷 第2期 页码 265-272 doi: 10.1007/s11705-016-1570-6
关键词: gas sensing urea PANI amides plasma
标题 作者 时间 类型 操作
An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using
Xuanru Zhang,Jia Wen Zhu,Tie Jun Cui,
期刊论文
Experimental study on combined buoyant-thermocapillary flow along with rising liquid film on the surface
Manuel J. GOMES, Ning MEI
期刊论文
Simulation of cross-flow-induced vibration of tube bundle by surface vorticity method
WANG Fenghao, JIANG Gedong, Lin John Zhang
期刊论文
Aerodynamic design by jointly applying S2 flow surface calculation and modern optimization methods on
ZHAO Honglei, WANG Songtao, HAN Wanjin, FENG Guotai
期刊论文
(Super)paramagnetic nanoparticles as platform materials for environmental applications: From synthesis to demonstration
Wenlu Li, John D. Fortner
期刊论文
Effects of process parameters on surface roughness in abrasive waterjet cutting of aluminium
M. CHITHIRAI PON SELVAN, N. MOHANA SUNDARA RAJU, H. K. SACHIDANANDA
期刊论文
表面"彩虹"上的超分辨率光谱位移传感
Lyu Zhou, Nan Zhang, Chang Chieh Hsu, Matthew Singer, Xie Zeng, Yizheng Li, Haomin Song, Josep Jornet, Yun Wu, Qiaoqiang Gan
期刊论文
REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS OF MONITORING
期刊论文
Several basic problems in plastic theory of geomaterials
Yuanxue LIU, Jiawu ZHOU, Zhongyou LI, Chen CHEN, Yingren ZHENG
期刊论文
Quorum sensing regulation methods and their effects on biofilm in biological waste treatment systems:
期刊论文