Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287130
C. De Capua, N. Pasquino, A. M. Rinaldi, A. Scala
A mobile distributed system for the monitoring and mapping of electromagnetic field exposure levels in urban environments is presented. The main objective of the system, in accordance with current regulations, is to use mapped values to highlight 'critical' locations within the investigated area where the environmental electromagnetic field amplitude is higher, and that therefore need careful observation and monitoring or require proper countermeasures to limit alleged health risk. The system is characterized in terms of measurement uncertainty and a brief discussion about its effect on the confidence about the statement that warning limits have been overcome will also be presented. The proposed mobile system counts many advantages, the most immediate ones being an increase of the area investigated compared to that covered by a fixed measurement system employing the same number of device; the opportunity to collect data from different clients onto one server for analysis purposes and support to decision making procedures, and the integration with other informative layers such as population density to obtain an aggregate piece of information that returns, for example, how critical exposure to EM field is when compared to other area with a different population density.
{"title":"A distributed system of mobile sensors for electromagnetic field measurements in urban environments","authors":"C. De Capua, N. Pasquino, A. M. Rinaldi, A. Scala","doi":"10.1109/SFICON.2004.1287130","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287130","url":null,"abstract":"A mobile distributed system for the monitoring and mapping of electromagnetic field exposure levels in urban environments is presented. The main objective of the system, in accordance with current regulations, is to use mapped values to highlight 'critical' locations within the investigated area where the environmental electromagnetic field amplitude is higher, and that therefore need careful observation and monitoring or require proper countermeasures to limit alleged health risk. The system is characterized in terms of measurement uncertainty and a brief discussion about its effect on the confidence about the statement that warning limits have been overcome will also be presented. The proposed mobile system counts many advantages, the most immediate ones being an increase of the area investigated compared to that covered by a fixed measurement system employing the same number of device; the opportunity to collect data from different clients onto one server for analysis purposes and support to decision making procedures, and the integration with other informative layers such as population density to obtain an aggregate piece of information that returns, for example, how critical exposure to EM field is when compared to other area with a different population density.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116281937","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287161
M. DiSilvestro, T. Dietz
This paper describes a calibration method for linear displacement sensors that includes quantifiable errors on the order of 1 /spl mu/m, and that has been adopted in an effort to ensure accurate measurements of micromotion within orthopaedic implants during simulated use. This method results in a calibrated linear displacement sensor system with known quantifiable error. For the components used in this study, this error is on the order of 1 /spl mu/m. It is suggested that this or a similar method be used for calibration of linear displacement sensors to be used to measure micromotion of orthopaedic implants to ensure accuracy and reliability of data and interpreted results.
{"title":"Calibration of linear displacement sensors for micromotion studies","authors":"M. DiSilvestro, T. Dietz","doi":"10.1109/SFICON.2004.1287161","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287161","url":null,"abstract":"This paper describes a calibration method for linear displacement sensors that includes quantifiable errors on the order of 1 /spl mu/m, and that has been adopted in an effort to ensure accurate measurements of micromotion within orthopaedic implants during simulated use. This method results in a calibrated linear displacement sensor system with known quantifiable error. For the components used in this study, this error is on the order of 1 /spl mu/m. It is suggested that this or a similar method be used for calibration of linear displacement sensors to be used to measure micromotion of orthopaedic implants to ensure accuracy and reliability of data and interpreted results.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127588880","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287129
L. Rovati, L. Pollonini, M. Zanasi, D. Sivieri, M. Badiali
Surface inspection methods are strategic to accurately monitor the quality of the wood panel surface. Optical techniques represent a unique solution to develop inexpensive, simple, and compact, solid-state sensors. In this paper we propose a preliminary study oriented to investigate the use of light scattering technique to perform online measurements of wood panel surface roughness.
{"title":"Design of an optical sensor for surface roughness measurements of wood based panels","authors":"L. Rovati, L. Pollonini, M. Zanasi, D. Sivieri, M. Badiali","doi":"10.1109/SFICON.2004.1287129","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287129","url":null,"abstract":"Surface inspection methods are strategic to accurately monitor the quality of the wood panel surface. Optical techniques represent a unique solution to develop inexpensive, simple, and compact, solid-state sensors. In this paper we propose a preliminary study oriented to investigate the use of light scattering technique to perform online measurements of wood panel surface roughness.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130273556","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287147
A. Hossain, M. Fathizadeh
Wireless telephones systems are available for quite sometimes. However, wireless devices that can send and receive analog and digital data from industrial control process in a noisy industrial environment have just been introduced. Recently, Omnex Control Systems Inc. has introduced industrial friendly analog and digital wireless transceiver to reliably communicate under noisy industrial condition among sensors, transducers, final control elements, programmable logic controllers (PLCs), and similar devices and systems. This wireless digital and analog conduit is a commercialized version of the spread spectrum license free 902-928 MHz frequency hopping communication techniques used by the defense industry. Since the system is license free and maintenance free wireless conduit, it eliminates costly and time consuming cable laying for new and retrofitting of existing project. This wireless conduit is an interference free link between remote devices and control room, it is ideal for a noisy industrial environment. The subject of this paper deals with monitoring, controlling, and acquiring data continuously from an industrial process using this wireless conduit. The authors plan to demonstrate the interfacing of an industrial process, transducers, and final control elements to a remotely located computer controlled data acquisition system. The monitoring and controlling of remote process via a reliable link without sacrificing the data integrity and loss of ability to analyze the acquired data will be discussed. We are proposing to show how this wireless conduit is a two-way monitoring and controlling solutions for a variety of industrial application in heavy interference environment where other radios fail to perform.
{"title":"Wireless interface to new and retrofitting of existing industrial systems for monitoring, controlling and data acquisition in a noisy industrial environment","authors":"A. Hossain, M. Fathizadeh","doi":"10.1109/SFICON.2004.1287147","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287147","url":null,"abstract":"Wireless telephones systems are available for quite sometimes. However, wireless devices that can send and receive analog and digital data from industrial control process in a noisy industrial environment have just been introduced. Recently, Omnex Control Systems Inc. has introduced industrial friendly analog and digital wireless transceiver to reliably communicate under noisy industrial condition among sensors, transducers, final control elements, programmable logic controllers (PLCs), and similar devices and systems. This wireless digital and analog conduit is a commercialized version of the spread spectrum license free 902-928 MHz frequency hopping communication techniques used by the defense industry. Since the system is license free and maintenance free wireless conduit, it eliminates costly and time consuming cable laying for new and retrofitting of existing project. This wireless conduit is an interference free link between remote devices and control room, it is ideal for a noisy industrial environment. The subject of this paper deals with monitoring, controlling, and acquiring data continuously from an industrial process using this wireless conduit. The authors plan to demonstrate the interfacing of an industrial process, transducers, and final control elements to a remotely located computer controlled data acquisition system. The monitoring and controlling of remote process via a reliable link without sacrificing the data integrity and loss of ability to analyze the acquired data will be discussed. We are proposing to show how this wireless conduit is a two-way monitoring and controlling solutions for a variety of industrial application in heavy interference environment where other radios fail to perform.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"62 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134609138","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287152
J. A. Dominguez, R. Barile
Polarography is the measurement of the current that flows in solution as a function of an applied voltage. The actual form of the observed polarographic current depends upon the manner in which the voltage is applied and on the characteristics of the working electrode. The new gas polarographic H/sub 2/ sensor shows a current level increment with concentration of the gaseous H/sub 2/ similar to those relating to metal ions in liquid electrolytes in well-known polarography. This phenomenon is caused by the fact that the diffusion of the gaseous H/sub 2/ through a gas diffusion hole built in the sensor is a rate-determining step in the gaseous-hydrogen sensing mechanism. The diffusion hole artificially limits the diffusion of the gaseous H/sub 2/ toward the electrode located at the sensor cavity. This gas polarographic H/sub 2/ sensor is actually an electrochemical-pumping cell since the gaseous H/sub 2/ is in fact pumped via the electrochemical driving force generated between the electrodes. Gaseous H/sub 2/ enters the diffusion hole and reaches the first electrode (anode) located in the sensor cavity to be transformed into an H/sup +/ ions or protons; H/sup +/ ions pass through the electrolyte and reach the second electrode (cathode) to be reformed to gaseous H/sub 2/. Gas polarographic O/sub 2/ sensors are commercially available; a gas polarographic O/sub 2/ sensor was used to prove the feasibility of building a new gas polarographic H/sub 2/ sensor.
{"title":"New gas polarographic hydrogen sensor","authors":"J. A. Dominguez, R. Barile","doi":"10.1109/SFICON.2004.1287152","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287152","url":null,"abstract":"Polarography is the measurement of the current that flows in solution as a function of an applied voltage. The actual form of the observed polarographic current depends upon the manner in which the voltage is applied and on the characteristics of the working electrode. The new gas polarographic H/sub 2/ sensor shows a current level increment with concentration of the gaseous H/sub 2/ similar to those relating to metal ions in liquid electrolytes in well-known polarography. This phenomenon is caused by the fact that the diffusion of the gaseous H/sub 2/ through a gas diffusion hole built in the sensor is a rate-determining step in the gaseous-hydrogen sensing mechanism. The diffusion hole artificially limits the diffusion of the gaseous H/sub 2/ toward the electrode located at the sensor cavity. This gas polarographic H/sub 2/ sensor is actually an electrochemical-pumping cell since the gaseous H/sub 2/ is in fact pumped via the electrochemical driving force generated between the electrodes. Gaseous H/sub 2/ enters the diffusion hole and reaches the first electrode (anode) located in the sensor cavity to be transformed into an H/sup +/ ions or protons; H/sup +/ ions pass through the electrolyte and reach the second electrode (cathode) to be reformed to gaseous H/sub 2/. Gas polarographic O/sub 2/ sensors are commercially available; a gas polarographic O/sub 2/ sensor was used to prove the feasibility of building a new gas polarographic H/sub 2/ sensor.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127769439","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287127
B. Iliev, G. Meijer
An interface system for measuring rockwool water-content and water conductivity is presented. It is intended for measuring impedances that can be modeled as a parallel combination of a capacitance C/sub p/ and a resistance R/sub p/. In the particular application, the capacitance varies from 1 pF to 100 pF and the resistance can be in the range from few tens of ohms up to 5 k/spl Omega/ The measurements are conducted with a sinusoidal signal having a frequency of 20 MHz. At this frequency the full-scale error for C/sub p/ doesn't exceed 3,5% for a 100 pF range. The full-scale error for the measured R/sub p/ remains below 3,7% for a full-scale value of 5 k/spl Omega/ with the presented measurement principle resolution better than 0,2% can be achieved for both measured components.
{"title":"An impedance-measurement system for electrical characterization of rockwool substrates","authors":"B. Iliev, G. Meijer","doi":"10.1109/SFICON.2004.1287127","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287127","url":null,"abstract":"An interface system for measuring rockwool water-content and water conductivity is presented. It is intended for measuring impedances that can be modeled as a parallel combination of a capacitance C/sub p/ and a resistance R/sub p/. In the particular application, the capacitance varies from 1 pF to 100 pF and the resistance can be in the range from few tens of ohms up to 5 k/spl Omega/ The measurements are conducted with a sinusoidal signal having a frequency of 20 MHz. At this frequency the full-scale error for C/sub p/ doesn't exceed 3,5% for a 100 pF range. The full-scale error for the measured R/sub p/ remains below 3,7% for a full-scale value of 5 k/spl Omega/ with the presented measurement principle resolution better than 0,2% can be achieved for both measured components.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115447820","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287134
J. G. Castano, J. Lonnblad, M. Svensson, A. Castaño, M. Ekstrom, Y. Backlund
This paper describes a new Bluetooth/sup TM/-based wireless implementation of a mobile sensor. The solution reduces dramatically both power consumption and size of a wireless sensor improving earlier Bluetooth/sup TM/ implementations where multi-chip solutions were used and mobility was not supported. Three different implementations from multi-chip to single chip are described with the sensor wireless interface, the architecture, protocols and algorithms used. Achieved results are: (1) Implementation of 1 chip solution wireless sensor using the internal Bluetooth/sup TM/ module ADC for external sensing purposes. (2) Mobile sensor wireless monitoring with Bluetooth/sup TM/.
{"title":"Steps towards a minimal mobile wireless Bluetooth/sup TM/ sensor","authors":"J. G. Castano, J. Lonnblad, M. Svensson, A. Castaño, M. Ekstrom, Y. Backlund","doi":"10.1109/SFICON.2004.1287134","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287134","url":null,"abstract":"This paper describes a new Bluetooth/sup TM/-based wireless implementation of a mobile sensor. The solution reduces dramatically both power consumption and size of a wireless sensor improving earlier Bluetooth/sup TM/ implementations where multi-chip solutions were used and mobility was not supported. Three different implementations from multi-chip to single chip are described with the sensor wireless interface, the architecture, protocols and algorithms used. Achieved results are: (1) Implementation of 1 chip solution wireless sensor using the internal Bluetooth/sup TM/ module ADC for external sensing purposes. (2) Mobile sensor wireless monitoring with Bluetooth/sup TM/.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518553","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287156
A. Depari, P. Ferrari, A. Flammini, D. Marioli, E. Sisinni, A. Taroni
This paper deals with smart sensors that offer data structures and access features as described in the IEEE1451 standard, while they have network interface based on USB. Communication protocol has been inspired by IEEE1451.2 transducer independent interface (TII). A new hardware architecture that fuses together a smart transducer interface module (STIM) and a USB Device, is introduced. A full VHDL description of the device has been also provided in order to facilitate future migration to a single-chip ASIC suitable for low-cost high-performance application. Finally, some preliminary simulations have been carried out to evaluate performances of the proposed U-STIM architecture.
{"title":"IEEE1451 smart sensors supporting USB connectivity","authors":"A. Depari, P. Ferrari, A. Flammini, D. Marioli, E. Sisinni, A. Taroni","doi":"10.1109/SFICON.2004.1287156","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287156","url":null,"abstract":"This paper deals with smart sensors that offer data structures and access features as described in the IEEE1451 standard, while they have network interface based on USB. Communication protocol has been inspired by IEEE1451.2 transducer independent interface (TII). A new hardware architecture that fuses together a smart transducer interface module (STIM) and a USB Device, is introduced. A full VHDL description of the device has been also provided in order to facilitate future migration to a single-chip ASIC suitable for low-cost high-performance application. Finally, some preliminary simulations have been carried out to evaluate performances of the proposed U-STIM architecture.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123799909","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287146
W. Solano, J. Junell, J. Schmalzel, K.C. Shumard
Wireless and intelligent sensors are being developed and applied to a variety of engine test applications at SSC. A Wireless Sensor Suite has been developed to provide for an easily configurable and deployable data collection capability as well as serve as an upgradable laboratory and field platform that evolves to accommodate new technologies and smart sensor paradigms. One promising application is to use this system as a platform for experimental demonstration of facility health monitoring using arrays of intelligent networked sensors.
{"title":"Implementation of wireless and intelligent sensor technologies in the propulsion test environment","authors":"W. Solano, J. Junell, J. Schmalzel, K.C. Shumard","doi":"10.1109/SFICON.2004.1287146","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287146","url":null,"abstract":"Wireless and intelligent sensors are being developed and applied to a variety of engine test applications at SSC. A Wireless Sensor Suite has been developed to provide for an easily configurable and deployable data collection capability as well as serve as an upgradable laboratory and field platform that evolves to accommodate new technologies and smart sensor paradigms. One promising application is to use this system as a platform for experimental demonstration of facility health monitoring using arrays of intelligent networked sensors.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131025236","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}
Pub Date : 2004-08-24DOI: 10.1109/SFICON.2004.1287162
C.F. Yang, Tu Pen, J. Schmalzel
A gene sensor was designed using actinomycin D-functionalized magnetic nano-microspheres, which can interact with double-stranded DNAs (dsDNAs) anchored on the gold film electrode of an electrochemical quartz crystal microbalance (EQCM). Actinomycin D acts as a guide that leads heavy microspheres onto the dsDNAs at the EQCM film. A magnetic separation shelf could separate unreacted microspheres conveniently. The modification and DNA hybridization at EQCM electrodes were examined by microgravimetric and electrochemical methods so that an outstanding change in frequency decrease has been detected owing to the mass increase on the EQCM electrodes. The limit for the determination of target DNA could be improved from 6.2/spl times/10/sup -8/ to 2.0/spl times/ 10/sup -12/ mol l/sup -1/ by the amplifying technique.
{"title":"Design of a piezoelectric gene-sensor using base-specific drug-functionalized nano-microspheres as amplifying probes","authors":"C.F. Yang, Tu Pen, J. Schmalzel","doi":"10.1109/SFICON.2004.1287162","DOIUrl":"https://doi.org/10.1109/SFICON.2004.1287162","url":null,"abstract":"A gene sensor was designed using actinomycin D-functionalized magnetic nano-microspheres, which can interact with double-stranded DNAs (dsDNAs) anchored on the gold film electrode of an electrochemical quartz crystal microbalance (EQCM). Actinomycin D acts as a guide that leads heavy microspheres onto the dsDNAs at the EQCM film. A magnetic separation shelf could separate unreacted microspheres conveniently. The modification and DNA hybridization at EQCM electrodes were examined by microgravimetric and electrochemical methods so that an outstanding change in frequency decrease has been detected owing to the mass increase on the EQCM electrodes. The limit for the determination of target DNA could be improved from 6.2/spl times/10/sup -8/ to 2.0/spl times/ 10/sup -12/ mol l/sup -1/ by the amplifying technique.","PeriodicalId":381233,"journal":{"name":"ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128795188","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}
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