2011 IEEE Sensors Applications Symposium最新文献_第2页

Optimization of immunochemistry for sensing techniques to detect pesticide residues in water 水中农药残留免疫化学检测技术的优化

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739792

B. Uthuppu, N. Kostesha, M. Jakobsen, Spire M. Kiersgaard, J. Aamand, C. Jørgensen

{"title":"Optimization of immunochemistry for sensing techniques to detect pesticide residues in water","authors":"B. Uthuppu, N. Kostesha, M. Jakobsen, Spire M. Kiersgaard, J. Aamand, C. Jørgensen","doi":"10.1109/SAS.2011.5739792","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739792","url":null,"abstract":"We are working on the development of a real-time electrochemical sensor based on an immunoassay detection system to detect and quantify the presence of pesticide residues in ground water. Highly selective and sensitive immuno-reactions are being investigated to be optimized in order to bring them into the level of real-time in-line sensors. In this project a competitive immunoassay between surface immobilized 2,6-dichlorobenzamide (BAM) haptens and BAM present in the water sample using an anti-BAM monoclonal antibody is being described. 2,6-Dichlorobenzamide (BAM) is a degradation product of the herbicide, dichlobenil which has been used extensively in the past and it is among the most frequently found pesticide residues in European ground water. BAM is highly resistant to further degradation and is fairly soluble in water. We have synthesized and immobilized a small library of BAM haptens and compared the affinity constants of the antibody towards this library. Furthermore, since regeneration of the BAM-hapten surface is a prerequisite for the development of a real-time electrochemical sensor with immunoassay-based detection, studies on regeneration of surfaces, modified with the newly synthesized BAM-haptens has been preformed and compared and correlated to the measured affinity constants. By using conventional ELISA we were able to indicate that one of the immobilized BAM haptens with an intermediate affinity towards the anti-BAM antibody was better in terms of regeneration. Design and fabrication of a fully automated microfluidic based on this immunoassay and electrochemical detection are in progress.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133184375","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: 1

Trace level detection of NO2 gas using SnO2 thin films 利用SnO2薄膜检测NO2气体的痕量水平

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739791

Anjali Sharma, K. Sreenivas, Vinay Gupta, M. Tomar

引用次数: 1

Optimization of fingernail sensing technique based on optical experimentation and modeling 基于光学实验和建模的指甲传感技术优化

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739818

J. Abu-Khalaf, S. Mascaro

{"title":"Optimization of fingernail sensing technique based on optical experimentation and modeling","authors":"J. Abu-Khalaf, S. Mascaro","doi":"10.1109/SAS.2011.5739818","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739818","url":null,"abstract":"The purpose of this paper is to experimentally determine the optimal optical parameters for transmitting light through the human fingernail bed in order to measure the change in blood volume that occurs when force is exerted on the fingertip. This “fingernail sensing” technique, which is a form of photoplethysmography, involves the placement of LEDs and photodetectors on the fingernail surface. As forces are applied to the fingertip, the blood perfusion in the fingernail bed is affected, resulting in various red and white regions of coloration beneath the fingernail. Thus, the transmittance of light across the fingernail bed changes as a function of applied force, resulting in a change in voltage from the photodetector circuit. Much research has previously been done to build and calibrate black-box models that estimate fingertip force based on the photodetector outputs. However, the effect of varying the wavelength and optical path length has never been thoroughly investigated. Due to recent advances in the manufacturing of fingernail sensors and the availability of surface mount LEDs of certain wavelengths, we now perform a thorough experimental characterization of the sensitivity of the transmittance to wavelength and optical path length. Results show the sensitivity is maximized when using green light (525 nm) and when the surface mount LED and photodiode are placed as close together as possible. Using data from the experiments, we also calibrate a physically-based model of the optical transmittance, which can be used to optimize fingernail sensor design.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115099065","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: 3

Single chip solution to capacitive liquid crystal chemical and biological sensor 单芯片解决电容式液晶化学和生物传感器

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739774

A. Hassanzadeh, R. Lindquist

引用次数: 5

A fast circuit model for interaction of open-ended rectangular waveguide probes with surface long cracks in metals 开放式矩形波导探针与金属表面长裂纹相互作用的快速电路模型

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739824

I. Ahanian, S. Sadeghi, R. Moini

引用次数: 2

A multi-agent model for fault diagnosis in petrochemical plants 石油化工装置故障诊断的多智能体模型

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739808

Benito Mendoza, Peng Xu, Li Song

引用次数: 6

Review of sensors for greenhouse climate monitoring 温室气候监测传感器综述

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739816

Vu Minh Quan, G. Sen Gupta, S. Mukhopadhyay

{"title":"Review of sensors for greenhouse climate monitoring","authors":"Vu Minh Quan, G. Sen Gupta, S. Mukhopadhyay","doi":"10.1109/SAS.2011.5739816","DOIUrl":"https://doi.org/10.1109/SAS.2011.5739816","url":null,"abstract":"A greenhouse provides shelter and protects plants from harsh environment and external interferences. It allows plants to grow under an optimum condition which maximizes the growth potential of the plants. The existing systems only allow for the monitoring of climate variables such as temperature or humidity and often overlook many other important factors such as CO2, light, soil moisture, soil temperature etc. Neglecting these climate factors leads to inaccurate observation of the overall greenhouse climate condition. To make up for this weakness, the prototype designed for this particular research will allow better monitoring of the climate condition in a greenhouse by integrating several sensor elements such as CO2, temperature, humidity, light, soil moisture and soil temperature into the system. The purpose of this paper is to provide a review of a range of popular sensors on the market. The paper also discusses their operating principles as well as addresses their advantages and disadvantages. Experiments were carried to test the accuracy of the sensors and the results indicate that the sensors used in this project are relatively accurate and have good stability.","PeriodicalId":401849,"journal":{"name":"2011 IEEE Sensors Applications Symposium","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134477409","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

Optical sensor system for continuous non-invasive hemodynamic monitoring in real-time 用于连续无创实时血流动力学监测的光学传感器系统

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739781

U. Timm, S. Andruschenko, M. Hinz, S. Koball, G. Leen, Elfed Lewis, J. Kraitl, Hartmut Ewald

引用次数: 6

On accuracy of simple FDTD models for the simulation of human body path loss 简单时域有限差分模型模拟人体路径损耗的精度研究

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739771

S. Makarov, U. Khan, Md. Monirul Islam, R. Ludwig, K. Pahlavan

引用次数: 11

Beam divergence calculation of an electromagnetic acoustic transducer for the Non-Destructive Evaluation of plate-like structures 用于板状结构无损检测的电磁声换能器的波束发散计算

2011 IEEE Sensors Applications Symposium Pub Date : 2011-03-28 DOI: 10.1109/SAS.2011.5739799

Siddharth Advani, Jason K. Van Velsor, J. Rose

引用次数: 6