IEEE Sensors, 2005.最新文献

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A micromachined magnetometer with frequency modulation at the output 输出端有调频的微机械磁强计
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597765
B. Bahreyni, C. Shafai
{"title":"A micromachined magnetometer with frequency modulation at the output","authors":"B. Bahreyni, C. Shafai","doi":"10.1109/ICSENS.2005.1597765","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597765","url":null,"abstract":"A novel design of a resonant magnetic field sensor and complete modeling of its behavior are presented along with a description of the experimental set up and results. The sensor output is a shift in frequency, which is robust against interference and easy to be read by digital systems. An analytic model is derived for the sensor behavior using novel and existing techniques. This model takes advantage of the ability of Dunkerley's method to model complex structures. Devices were fabricated in an SOI bulk micromachining process. Experimental results for the performance of the devices are in good agreement with modeling predictions. The minimum detected field is 80muT with simple electronics. However, the theoretical minimum detectable signal for different devices is on the order of 10's of nano-teslas at 1Torr measured with a noiseless spectrum analyzer with a 100Hz bandwidth. This level of sensitivity is a consequence of the frequency modulation of the output signal","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126365600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Surface sensitization of metal oxide quasi-1D sensors: in situ comparative study of pristine and Pd doped individual SnO/sub 2/ nanostructure 金属氧化物准一维传感器的表面敏化:原始和Pd掺杂单个SnO/sub /纳米结构的原位比较研究
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597921
A. Kolmakov, Dmitri O. Klenov, Y. Lilach, S. Stemmer, M. Moskovits
{"title":"Surface sensitization of metal oxide quasi-1D sensors: in situ comparative study of pristine and Pd doped individual SnO/sub 2/ nanostructure","authors":"A. Kolmakov, Dmitri O. Klenov, Y. Lilach, S. Stemmer, M. Moskovits","doi":"10.1109/ICSENS.2005.1597921","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597921","url":null,"abstract":"We have developed the technique for in situ monitoring of the process of surface functionalization of the pre-selected 1-D nanostructure with catalytic particles of Pd. The method allows us to compare directly the sensing performance of the individual SnO2 nanobelt chemical sensor before and after surface sensitization. The conductance evolution at early stages of the metal deposition before percolation indicates that Pd nanoparticles formed on the nanowire surface induce regions depleted with electrons which narrow the effective conduction channel and therefore are responsible for the conductance drop. After being functionalized with Pd the nanostructure exhibited drastic improvement of the sensitivity toward oxygen and hydrogen due to enhanced activation of molecules on Pd nanoparticle surface and diffusion of resultant reactive species to the oxide surface","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"54 51","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120813940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Markov chain-based models for missing and faulty data in MICA2 sensor motes 基于马尔可夫链的MICA2传感器数据缺失和故障模型
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597764
F. Koushanfar, M. Potkonjak
{"title":"Markov chain-based models for missing and faulty data in MICA2 sensor motes","authors":"F. Koushanfar, M. Potkonjak","doi":"10.1109/ICSENS.2005.1597764","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597764","url":null,"abstract":"We have developed Markov chain-based techniques for infield modeling the missing and faulty data for the widely used MICA2 sensor motes. These models help designers of sensor nodes and sensor networks to gain insights into the behavior of any particular sensor platform. The models also enable users of sensor networks to collect high integrity data from the deployed networks in a more efficient and reliable way. The new approach for development and validation of faults and missing data has two phases. In the first phase, we conduct exploratory analysis of data traces collected from the deployed sensor networks. In the second phase, we use the density estimation-based procedure to derive semi Markov models that best capture the patterns and statistics of missing and faulty data in the analyzed sensor data streams. We have applied the fault detection and missing data modeling procedure on light, temperature and humidity sensors on MICA2 motes in sensor networks deployed in office space and natural habitats. The technical highlight of the research presented in this paper include: (i) exploratory data analysis and studying the properties of the sensor data streams; and (ii) adoption of a new class of semi Markov-chain models for capturing and predicting missing and faulty data in actual data trace streams","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120963210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Flow property determination in homogeneous media by means of perturbation injection 用微扰注入法测定均匀介质的流动特性
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597790
A. Fuchs, B. Kortschak, G. Holler, H. Wegleiter, G. Brasseur
{"title":"Flow property determination in homogeneous media by means of perturbation injection","authors":"A. Fuchs, B. Kortschak, G. Holler, H. Wegleiter, G. Brasseur","doi":"10.1109/ICSENS.2005.1597790","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597790","url":null,"abstract":"This paper describes a combined measurement of material density and particle velocity for dense bulk solids flow in pipelines. The measurement is based on electrical capacitance tomography techniques, enhanced by an insertion of artificial disturbances upstream the capacitive sensor. Obtained material velocity and material density allow for the estimation of the mass flow even for totally homogenous material flow. The applicability of this principle for parameter estimation is discussed, presenting theoretical considerations as well as preliminary measurement results","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"281 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127505875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel sensor monitoring corrosion effects of lubrication oil in an integrating manner 一种集成监测润滑油腐蚀效应的新型传感器
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597901
Á. Ágoston, E. Svasek, B. Jakoby
{"title":"A novel sensor monitoring corrosion effects of lubrication oil in an integrating manner","authors":"Á. Ágoston, E. Svasek, B. Jakoby","doi":"10.1109/ICSENS.2005.1597901","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597901","url":null,"abstract":"Recently a number of sensor principles for the online monitoring of lubrication oil in combustion engines have been investigated, where the utilized sensors aim at determining physical and chemical properties of the oil, which can be used as indicators for the deterioration of the oil. A crucial property of lubrication oil is its corrosiveness as it directly relates to the corrosive wear of engine parts. More than a decade ago, Japanese researchers proposed the utilization of resistive sensors, which would directly detect the corrosion of metallic parts. In our work, we investigate sensors utilizing the decomposition of metallic thin films in oil and relate their output to the oil's corrosive properties as characterized in a laboratory analysis (in particular its acidity and sulfur content). We report on the fabrication and testing of sensor prototypes employing copper thin films using oil samples from artificial aging tests in the laboratory","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127414528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Chemical sensing with ZnO nanowires ZnO纳米线的化学传感
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597829
Z. Fan, J.G. Lu
{"title":"Chemical sensing with ZnO nanowires","authors":"Z. Fan, J.G. Lu","doi":"10.1109/ICSENS.2005.1597829","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597829","url":null,"abstract":"Zinc oxide nanowires were configured as n-channel field-effect transistors. These transistors were implemented as chemical sensors for detection of various gases. The ammonia sensing behavior of nanowires was observed to switch from oxidizing to reducing when temperature increased from 300 to 500 K. This effect is attributed to the temperature dependent chemical potential shift. Carbon monoxide was found to increase the nanowire conductance in the presence of oxygen. In addition, nanowire detection sensitivity dependence on the diameter was investigated","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132761007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
An electrostatically actuated valve for turbulent boundary layer control 一种用于湍流边界层控制的静电驱动阀
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597642
J. Frutos, D. Vernier, F. Bastien, M. de Labachelerie, Y. Bailly
{"title":"An electrostatically actuated valve for turbulent boundary layer control","authors":"J. Frutos, D. Vernier, F. Bastien, M. de Labachelerie, Y. Bailly","doi":"10.1109/ICSENS.2005.1597642","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597642","url":null,"abstract":"A large displacement electrostatic valve has been designed and realized for a realistic turbulent boundary layer control. This actuator consists of a pair of rigid electrodes and a flexible film having a S-shape providing local high electrostatic forces required for controling rather large pressure differences. The aim is the reattachment of the boundary layer near an aircraft flap trailing edge by transferring momentum energy via high speed pulsated micro air jets. The valve controls the frequency and the speed of the micro jets. An array of fifteen actuators has been manufactured and characterized by particles images velocimetry (PIV) and hot wire anemometry (HWA). The devices are able to control pressure differences up to 27 kPa with a supply voltage of 400 V. For this maximum pressure, the corresponding jet velocity downstream a 45 degree skew micro orifice (0.4 mm diameter) is close to 100 ms-1","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122217385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Fabrication of ultrafloppy single-crystal silicon cantilever for magnetic resonance imaging 磁共振成像用超高速单晶硅悬臂梁的研制
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597688
J. Park, D.-W. Lee, U. Gysin, S. Rast, E. Meyer, M. Despont, C. Gerber
{"title":"Fabrication of ultrafloppy single-crystal silicon cantilever for magnetic resonance imaging","authors":"J. Park, D.-W. Lee, U. Gysin, S. Rast, E. Meyer, M. Despont, C. Gerber","doi":"10.1109/ICSENS.2005.1597688","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597688","url":null,"abstract":"We have proposed a fabrication method of the ultrafloppy single-crystal silicon cantilever and evaluated their mechanical properties under several conditions. A spring constant of the fabricated cantilever was less than 0.0001 N/m and minimum detectable force was around 10-16 N at room temperature. With them, we performed the measurement of the vacuum dependent and temperature dependent. First the change of a quality factor was measured as a function of vacuum. A big increase of the quality factor is observed in a range of 1 to 0.1 Pa. The quality factor these cantilever are very high (Q=68840+/-1184) in a high vacuum. In the second experiment we measured the temperature dependent of the resonance frequency and the internal friction. By decreasing the operating temperature, the resonance frequency is slightly increased due to the change of Young's modules. The internal friction is observed the minimum at 20K and the maximum at 160K. The best sensitivity is achieved at 20K, where a factor of 10 is compared to room temperature","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116882740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Single-fiber probe based on surface enhanced Raman scattering (SERS) 基于表面增强拉曼散射(SERS)的单光纤探针
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597893
Yi Zhang, C. Gu, A. Schwartzberg, J.Z. Zhang
{"title":"Single-fiber probe based on surface enhanced Raman scattering (SERS)","authors":"Yi Zhang, C. Gu, A. Schwartzberg, J.Z. Zhang","doi":"10.1109/ICSENS.2005.1597893","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597893","url":null,"abstract":"Fiber SERS probes have great potential in chemical and biological sensing. To our knowledge, there has been no demonstration of any single-fiber SERS probes where both the excitation beam and SERS signals are transmitted through the same fiber with a significant length, which is required for a flexible probe. In this paper, we report our proof-of-concept demonstration of a single-fiber SERS probe with a 1 m long fiber. We demonstrate various configurations of the fiber probe, where the SERS substrate is coated on either a side-polished or end-polished fiber surface. While the side-polished fibers provide a large platform for signal generation, the end polished fibers are easy to manipulate and can transmit SERS signals back through the fiber. In our experiments, we have successfully detected SERS signals both at the end where the fiber is polished and coated with the SERS substrate and at the end where the excitation light is coupled into the fiber, using R6G as a testing sample","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"2 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131166394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Out-of-plane polymer hollow micro needle array integrated on a microfluidic chip 集成在微流控芯片上的面外聚合物空心微针阵列
IEEE Sensors, 2005. Pub Date : 2005-10-31 DOI: 10.1109/ICSENS.2005.1597741
Heng Huang, C. Fu
{"title":"Out-of-plane polymer hollow micro needle array integrated on a microfluidic chip","authors":"Heng Huang, C. Fu","doi":"10.1109/ICSENS.2005.1597741","DOIUrl":"https://doi.org/10.1109/ICSENS.2005.1597741","url":null,"abstract":"This paper presented a novel method for the fabrication of out-of-plane hollow polymer micro-needle arrays. This method of the fabrication combined two different back-side exposure procedures was able to produce hollow micro needles with a nearly vertical internal wall and a tapered outside wall by one lithography step. Micro-fluidic channels can be integrated with the needle array by this approach simultaneously. The arrays are able to fabricate on a flexible membrane such as PDMS for compliant applications. Different types of the needles had been successfully realized and demonstrated in this paper","PeriodicalId":119985,"journal":{"name":"IEEE Sensors, 2005.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131655935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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