G. Costantini, M. Carota, G. Maccioni, D. Giansanti
{"title":"A new integrated kinematic sensor for the classification of sit-to-stand locomotion task","authors":"G. Costantini, M. Carota, G. Maccioni, D. Giansanti","doi":"10.1109/IWASI.2007.4420005","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420005","url":null,"abstract":"In this paper we introduce a new kinematic sensor to evaluate the ability to rise from a chair by means of the sit-to-stand locomotion task. It is based on the analysis of the acceleration assessed by a homemade accelerometric transducer. Preliminary results show the feasibility of discriminating the rising from a chair fixed to different heights and the capability of distinguishing between pathological and non pathological parkinsonian subjects.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115624687","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}
C. Bonserio, M. Giannini, A. Losacco, G. Pappalettera
{"title":"Realization of a physical mask by laser micro-cutting process","authors":"C. Bonserio, M. Giannini, A. Losacco, G. Pappalettera","doi":"10.1109/IWASI.2007.4420037","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420037","url":null,"abstract":"Laser micromachining is a rapidly developing technology which allows to carry out laser material processing as cutting, drilling, marking and engraving on a millimetric or sub-millimetric dimensional scale which can be applied to the fabrication of micro-devices. The use of laser sources emitting very short pulses (a few ns) focalized on very small areas (laser spot diameters of a few mum) and micro-positioning systems of high velocity and precision, allows to execute high-resolution works, considerably reducing the processed area and the heat-affected zone so that to assure a good profile and surface quality. The aim of this work is to identify the optimal process parameters for the fabrication of physical masks useful to the realization of electronic devices as sensors or MEMS. A typical application is as transducer element in a biosensor, an analytical device which converts a biological response into an electrical signal. This configuration provides a highly sensitive biosensor capable of yielding good response even when the amount of a sample is extremely small.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"2020 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116970713","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}
A. Baschirotto, S. D’Amico, M. De Matteis, F. Grancagnolo, M. Panareo, R. Perrino, G. Chiodini, G. Tassielli
{"title":"A CMOS high-speed front-end for cluster counting techniques in ionization detectors","authors":"A. Baschirotto, S. D’Amico, M. De Matteis, F. Grancagnolo, M. Panareo, R. Perrino, G. Chiodini, G. Tassielli","doi":"10.1109/IWASI.2007.4420027","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420027","url":null,"abstract":"The counting of the consecutive ionization clusters in a drift chamber is a very promising technique for particle identification purposes. Although this technique features a number of advantages, the bottleneck for its implementation is represented by the difficulties in realizing a low cost, high-speed electronic interface. In fact, typical time separation between each ionization act in a helium-based gas mixture is from a few ns to a few tens of ns. Thus the read-out interface has to be able to process such a high-speed signals. It will be demonstrated that a read-out channel composed of a fast, large bandwidth preamplifier and of a large conversion rate Analog-to-Digital converter fullfil all the requirements for cluster counting. The recent scaled CMOS integrated circuit technologies allows to realize such a low-cost high-speed front-end, opening the possibility of realizing efficient cluster-counter-based detectors. In this paper, a CMOS 0.13 mum integrated readout circuit, including a fast preamplifier (with a -3B bandwidth of 500 MHz) and lGS/s-6bit ADC is designed for the central tracker of a future collider (ILC, super-B). The performance and the design issues associated to this architecture are discussed.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125102102","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}
{"title":"Sensitivity analysis of rib waveguides for integrated optical sensors","authors":"F. Dell’Olio, V. Passaro, F. De Leonardis","doi":"10.1109/IWASI.2007.4420035","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420035","url":null,"abstract":"Sensitivity of rib waveguides designed for evanescent-wave integrated optical sensors is investigated by an improved analytic approach based on Effective Index Method. Proposed procedure is applied to rib guiding structures in different CMOS-compatible technologies and rigorous results obtained by Finite Element Method are used for comparison. Agreement is demonstrated to be good even for high index contrast waveguides.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116023748","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}
A. De Marcellis, G. Ferri, M. Patrizi, V. Stornelli, A. D'Amico, C. di Natale', E. Martinelli, A. Alimelli, R. Paolesse
{"title":"An integrated analog lock-in amplifier for low-voltage low-frequency sensor interface","authors":"A. De Marcellis, G. Ferri, M. Patrizi, V. Stornelli, A. D'Amico, C. di Natale', E. Martinelli, A. Alimelli, R. Paolesse","doi":"10.1109/IWASI.2007.4420033","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420033","url":null,"abstract":"In this paper we propose a low single supply voltage (2V) analog lock-in amplifier, completely integrable on silicon, designed in a standard CMOS technology, for electronic sensor interfaces used in low-frequency applications. In particular, the proposed architecture is suitable for those sensor interfaces where the signal to be measured has a small amplitude and is buried into noise. In these cases, the lock-in amplifier guarantees the signal recovery from noise (till to 0.1 SNR), provided that the generated small signal, coming from sensor, has a fixed and well-known frequency. Together with the integrated solution, waiting for the chip fabrication, we have built a discrete element board, with commercial components, for preliminary experiments which confirm the validity of the proposed lock-in system, since it is able to detect, for example, very small quantities of carbon monoxide (CO).","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129479992","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}
{"title":"BIST for testing of delay","authors":"L. Milor, C. Jia","doi":"10.1109/IWASI.2007.4420031","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420031","url":null,"abstract":"A circuit has been designed to determine if on-chip path delays are equal to a pre-specified target. The circuit uses a delay-locked loop to generate the target delay, combined with a phase detector to determine the delay of a path in comparison with this target delay. The circuit was implemented with 0.18 um CMOS and has been analyzed over process, supply, and temperature variations. Accuracies in delay detection are within 200 ps.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129128634","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}
V. Passaro, B. Casamassima, F. De Leonardis, F. Dell’Olio, F. Magno
{"title":"Modeling and design of a microdisk photonic sensor for biological applications","authors":"V. Passaro, B. Casamassima, F. De Leonardis, F. Dell’Olio, F. Magno","doi":"10.1109/IWASI.2007.4420010","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420010","url":null,"abstract":"In this paper, we present the modeling and design of a new approach to detect an analyte for biochemical and biological sensing applications. It is based on a whispering-gallery-mode optical resonator coupled with a Fabry-Perot cavity in silicon-on-insulator technology. The theoretical model of the whole architecture includes the influence of all electrical and optical parameters, such as thin oxide thickness, silicon and poly silicon doping concentration, optical losses, wavelength and amplitude characteristics of the architecture, charge accumulation effects, and thermal effects. The very high sensitivity of this device, demonstrated by simulations, is due to the simultaneous influence of the two coupled resonators and the metal-oxide-semiconductor structure.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124915253","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}
G. Melone, P. Miodushevsky, L. Rizzi, L. Vasanelli
{"title":"Miniaturized thin film temperature sensor for wide range of measurements","authors":"G. Melone, P. Miodushevsky, L. Rizzi, L. Vasanelli","doi":"10.1109/IWASI.2007.4420022","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420022","url":null,"abstract":"This work is dedicated to the development of a sensor prototype for the measurement of high temperatures of solids, liquids and gases, in a range of 0 - 800degC with an accuracy of 0.1degC. Operative range may be extended also to cryogenic temperatures. Sensor may be useful for the realization of the remote infrared detectors. In the field of the temperature measurements there are well known sensors which operation is based on the variation of the electrical resistance of the sensitive material due to the temperature variation. Mostly precise between these types of sensors are the platinum resistance thermometers. The disadvantages of the existing devices are following: nonlinearity, large dimensions, necessity of electronic devices for the bridge completion and for the signal amplification, low level of output signal. Also well known are the devices with electrical resistance dependent from the temperature, or thermistors, deposited on ceramic substrate; they have an elevated sensibility but also high nonlinearity. low precision and a narrow operating range of temperature. In the field of the remote detectors there are currently bolometers with elevated sensibility; the disadvantages of such devices are elevated manufacturing cost and the necessity of a cooling to cryogenic temperatures. Comparing with temperature sensors currently available on the market, the new sensor has various advantages, between which the main ones are: 1. elevated sensibility 2. miniaturization of the probe (the maximum external diameter ap 3 millimeter) 3. elevated output electrical signal (1 mV/K @ Iin = 0.5 mA), that permits to work without the use of electronics and on long lines in industrial systems. 4. elevated linearity in a wide range of measurement 5. fast response 6. technological reproducibility 7. affordable manufacturing costs.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133765840","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}
{"title":"Design of an integrated low-noise read-out system for DNA capacitive sensors","authors":"D. De Venuto, G. Indiveri, A. Valentini","doi":"10.1109/IWASI.2007.4420013","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420013","url":null,"abstract":"This paper describes an integrated solution for an accurate DNA label-free detection. The sensor considered is capacitive and constists of two golden electrodes. A known DNA strands (probe) is immobilized over them and a capacitive shift occurs in presence of a complementary sequence inside the solution. The shift amount has been previously evaluated by means of a charge sensitive amplifier (CSA) with an active feedback resistance, followed by a comparator and a counter on a prototyping board. Starting from the measurement results an integrated version is presented here using a low-noise CSA to reduce the low-frequency noise and offset. The system provides an A/D conversion and an evaluation of the capacitive shift amount with a resolution of more than 12 bit. The proposed integrated version of the read-out demonstrates the ability to identify variation on the capacitive values of the sensor with a resolution of 0.1%.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125483224","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}
Huixiang Li, L. Ascroft, A. Brooks, R. Russell, S. Wildt, L. Rothberg
{"title":"Selective quenching of unhybridized fluorescent probes by gold nanoparticles for rapid SNP genotyping using conventional PCR","authors":"Huixiang Li, L. Ascroft, A. Brooks, R. Russell, S. Wildt, L. Rothberg","doi":"10.1109/IWASI.2007.4420002","DOIUrl":"https://doi.org/10.1109/IWASI.2007.4420002","url":null,"abstract":"We detect single nucleotide polymorphisms (SNP) in genomic DNA that has been amplified using a standard PCR protocol where a short fluorescently tagged probe sequence and a single denaturation and annealing step have been added. We utilize the ability of ionically treated gold nanoparticles to selectively adsorb unhybridized probes in the modified PCR product and quench their fluorescence. The method eliminates the time and expense of gel electrophoresis while retaining the ability to use an ordinary thermal cycler for PCR amplification. We describe an application to genotyping Fatty Zucker rats and validate the method against fluorogenic realtime PCR with double blind studies.","PeriodicalId":413226,"journal":{"name":"2007 2nd International Workshop on Advances in Sensors and Interface","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131306718","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}