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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Sensor Science and Technology
Journal Basic Information
Journal DOI :
The Korean Sensors Society
Editor in Chief :
Volume & Issues
Volume 19, Issue 6 - Nov 2010
Volume 19, Issue 5 - Sep 2010
Volume 19, Issue 4 - Jul 2010
Volume 19, Issue 3 - May 2010
Volume 19, Issue 2 - Mar 2010
Volume 19, Issue 1 - Jan 2010
Selecting the target year
Nano and micro structures for label-free detection of biomolecules
Eom, Kil-Ho ; Kwon, Tae-Yun ; Sohn, Young-Soo ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 403~420
DOI : 10.5369/JSST.2010.19.6.403
Nano and micro structure-based biosensors are promising tool for label-free detection of biomolecular interactions with great accuracy. This review gives a brief survey on nano and micro platforms to sense a variety of analytes such as DNA, proteins and viruses. Among incredible nano and micro structure for bio-analytical applications, the scope of this paper will be limited to micro and nano resonators and nanowire field-effect transistors. Nanomechanical motion of the resonators transducers biological information to readable signals. They are commonly combined with an optical, capacitive or piezo-resistive detection systems. Binding of target molecule to the modified surface of nanowire modulates the current of the nanowire through electrical field-effect. Both detection methods have advantages of label-free, real-time and high sensitive detection. These structures can be extended to fabricate array-type sensors for multiplexed detection and high-throughput analysis. The biosensors based on these structures will be applied to lab-on-a-chip platforms and point-of-care diagnostics. Basic concepts including detection mechanisms and trends in their fields will be covered in this review.
Alizarin Red S modified electrochemical sensors for the detection of aluminum ion
Chang, Seung-Cheol ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 421~427
DOI : 10.5369/JSST.2010.19.6.421
Alizarin Red S modified screen printed carbon electrodes were developed for the electrochemical detection of aluminum ion. The electrodes developed use screen-printed carbon electrodes(SPCEs) coupled with chemical modification with an organic chelator, Alizarin Red S(ARS), for aluminum ion detection in aqueous solution. For sensor fabrication ARS was directly immobilized on the surface of SPCEs using PVA-SbQ(The poly(vinyl alcohol) bearing stryrylpyridinium groups). Aluminum concentrations were indirectly estimated by amperometric determination of the non-complexed ARS immobilized on the electrodes, after its complexation with aluminum. The sensitivity of the sensor developed was
and the detection limit for aluminum was
Volatile organic compounds gas sensor using side polished optical fiber
Yeom, Se-Hyuk ; Heng, Yuan ; Lim, Jun-Woo ; Kim, Hak-Rin ; Kang, Shin-Won ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 428~434
DOI : 10.5369/JSST.2010.19.6.428
In this study, a novel gas sensor based on evanescent field coupling between single mode side polished fiber and solvatochromic dye dispersed polymer waveguide was demonstrated. We fabricated a side polished optical fiber device as a volatile organic compounds gas detector. Solvatochromic dye was coated on the top of the side polished optical fiber to take advantage of evanescent field coupling. The solvatochromism can be defined as the phenomenon whereby a compound changes color, either by a change in the absorption or emission spectra of molecule, when reacted in different VOCs. The device reacted to polarity gases like a hexane, butane, xylene etc. The resonance wavelength was shifted by the xylene concentration which range was 0.1 ppm ~ 100 ppm. Also, the response with the concentration was lineer and the detection limit was 0.1 ppb.
Development for body temperature sensor and monitoring telemetry system
Lee, Jyung-Hyun ; Seong, Ki-Woong ; Kim, Myoung-Nam ; Cho, Jin-Ho ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 435~442
DOI : 10.5369/JSST.2010.19.6.435
Typically, the vital signs that are representing the state of human body, are the body temperature, sphygmus, respiration and blood pressure. The body temperature is the result of metabolic regulation and human steady-state body temperature is maintained from 35.9 to
by heat regulatory center. The body temperature is indicative of infection and especially it should be monitored to requiring intensive care patients or after surgical patients. But, measuring of body temperature to a heavy workload on nursing staff has been recognized. And, the health service of nurse is limited by simple tasks such as the measurement and record of vital sign. In this paper, the body temperature monitoring telemetry system was proposed to prove the recoding and transmission of body temperature patch system according the standard(ISO TS11073-92001). We proposed the transmission protocol to suit the MFER(medical waveform format encoding rules). The telemetry patch system was implemented and it was verified by experiments.
Crystal growth and scintillation properties of CsI:Na
Cheon, Jong-Kyu ; Kim, Sung-Hwan ; Kim, H.J. ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 443~448
DOI : 10.5369/JSST.2010.19.6.443
In this work, the scintillation properties of CsI:Na crystal were investigated as radiation detection sensor. This scintillation material was grown by a 2-zone vertical Bridgman method. Under X-ray excitation the crystal shows a broad emission band between 280 nm and 690 nm wavelength range, peaking at 413 nm. Energy resolution for
-rays of the crystal was measured to be 6.9 %(FWHM). At room temperature, the crystal exhibits three exponential decay time components. The fast and major component of scintillation time profile of the crystal emission decays with a 457 ns time constant. Absolute light yield of the crystal was estimated to be 53,000 ph/MeV using LAAPD. The sample crystal shows proportionality of 30 % in the measured energy range from 31 to 1,333 keV. And the
ratio of the crystal was 0.14.
Design of electromagnetic type transducer to drive round window with high efficiency
Lee, Jang-Woo ; Kim, Dong-Wook ; Kim, Myoung-Nam ; Cho, Jin-Ho ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 449~455
DOI : 10.5369/JSST.2010.19.6.449
Implantable middle ear hearing devices(IMEHDs) have being actively studied to overcome the problems of conventional hearing aids. Vibration transducer, an output devices of IMEHDs, is attached on the ossicular chain and transmits mechanical vibration to cochlea. This approach allows us to hear more clear sound because mechanical vibration is effective to transfer high frequency acoustics, but occurs some problems such as fatigue accumulation to ossicular chian and reduction of vibration displacement caused by mass loading effect. Recently, many studies for the round window stimulation are announced, because it does not cause such problems. It have been studied by older transducers designed for attaching on ossicular chain. In this paper, we proposed a new electromagnetic transducer which consists of two magnets, three coils and a vibration membrane. The magnet assembly, magnet coupled in opposite direction, were placed in the center of three coils, and the optimum length of each coil generating maximum vibrational force was calculated by finite element analysis(FEA). The transducer was implemented as the calculated length of each coil, and measured vibration displacement. From the results, it is verified the vibration displacement can be improved by optimizing the length of coils.
A portable surface plasmon resonance sensor system for detection of C-reactive protein using SAM with dimer structure
Sin, Eun-Jung ; Joung, Eun-Jung ; Jo, Jin-Hee ; Hwang, Dong-Hwan ; Sohn, Young-Soo ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 456~461
DOI : 10.5369/JSST.2010.19.6.456
The detection of C-reactive protein(CRP) using self-assembled monolayer(SAM) was investigated by a portable surface plasmon resonance(SPR) sensor system. The CRP is a biomarker for the possible cardiovascular disease. The SAM was formed on gold(Au) surface to anchor the monoclonal antibody of CRP(anti-CRP) for detection of CRP. Sequence injection of the anti-CRP and bovine serum albumin(BSA) into the sensor system has been carried out immobilize the antibody and to prevent non-specific binding. The portable SPR system has two flow channels: one for the sample measurements and the other for the reference. The output SPR signal was increased with the injection of the anti-CRP, BSA and CRP due to binding of the proteins on the sensor chip. The valid output SPR signals was linearly related to the critical range of the CRP concentration. The experimental results showed the feasibility of the portable SPR system with newly developed SAM to diagnose a risk of the future cardiovascular events.
Methane sensing characteristics and power consumption of MEMS gas sensor based on ZnO nanowhiskers
Moon, Hyung-Shin ; Park, Sung-Hyun ; Kim, Sung-Eun ; Yu, Yun-Sik ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 462~468
DOI : 10.5369/JSST.2010.19.6.462
A low power gas sensor with microheater was fabricated by MEMS technology. In order to heat up the gas sensing material to a operating temperature, a platinum(Pt) micro heater was built on to the micromachined Si substrate. The width and gap of microheater were
, respectively. ZnO nanowhisker arrays were fabricated on a sensor device by hydrothermal method. The sensor device was deposited with ZnO seeds using PLD systems. A 200 ml aqueous solution of 0.1 mol zinc nitrate hexahydrate, 0.1 mol hexamethylenetetramine, and 0.02 mol polyethylenimine was used for growthing ZnO nanowhiskers. The power consumption to heat up the gas sensor to a operating temperature was measured and temperature distribution of sensor was analyzed by a Infrared Thermal Camera. The optimum temperature for highest sensitivity was found to be
although relatively high(64 %) sensitivity was obtained even at as low as
. The power consumption was 72 mW at
and was only 25 mW at
A low-power 10 Gbps CMOS parallel-to-serial converter
Shim, Jae-Hoon ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 469~474
DOI : 10.5369/JSST.2010.19.6.469
This paper presents a 10Gbps CMOS parallel-to-serial converter for transmission of sensor data. A low-noise clock multiplying unit(CMU) and a multiplexer with controllable data sequence are proposed. The transmitter was fabricated in 0.13 um CMOS process and the measured total output jitter was less than 0.1 UIpp(unit-interval, peak-to-peak) over 20 kHz to 80 MHz bandwidth. The jitter of the CMU output only was measured as 0.2 ps,rms. The transmitter dissipates less than 200 mW from 1.5 V/2.5 V power supplies.
A study on the application of Rogowski coil on the LTCC
Park, Sung-Hyun ; Kim, Eun-Sup ; Shin, Byoung-Chul ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 475~482
DOI : 10.5369/JSST.2010.19.6.475
Rogowski coil which detects magnetic flux on current changes. It is used for digital integration with watt-hour meter`s current sensor, because, Rogowski coil has non-cored or non-magnetic core structure, so that, it cannot be saturated magnetically. This is a study for inventing accurate electric current sensors that have been applied on multi-layer ceramic substrate. We have confirmed its properties from each different layer`s materials and pattern sizes by MWS 3D Electromagnetic field analysis program. And, after sensor manufacturing on multi-layer ceramic substrate, we confirmed its sensing quality is reliable as accurate electric current sensor for watt-hour meter.
Temperature sensor without reference resistor by indium tin oxide and molybdenum
Jeon, Ho-Sik ; Bae, Byung-Seong ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 483~489
DOI : 10.5369/JSST.2010.19.6.483
Display quality depends on panel temperatures. To compensate it, temperature sensor was integrated on the panel. The conventional temperature sensor integrated on the panel needs external reference resistor. Since the resistance of external resistor can vary according to the variation of the environment temperature, the conventional temperature sensor can make error in temperature sensing. The environmental temperatures can change by the back light unit, driving circuits or chips. In this paper, we proposed a integrated temperature sensor on display panel which does not need external reference resister. Instead of external reference resistor, we used two materials which have different temperature coefficient in resistivity. They are connected serially and the output voltage was measured at the point of connection with the applied voltage to both ends. The proposed sensor was fabricated with indium tin oxide(ITO), and Mo metal electrode temperature sensor which were connected serially. We verified the temperature senor by the measurements of sensitivity, lineality, hysteresis, repeatability, stability, and accuracy.
Quantitative evaluating method for diagnostic ultrasound probe using 3-dimensional acoustic field analysis
Noh, Si-Cheol ; Kim, Ju-Young ; Park, Jae-Hyun ; Kim, Jin-Su ; Kang, Jung-Hoon ; Choi, Heung-Ho ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 490~496
DOI : 10.5369/JSST.2010.19.6.490
In this study, in order to overcome the weakness of acoustic field analysis which is generally used for ultrasonic probe performance evaluation, automatic acoustic field measurement system and evaluation parameters were proposed. The comparisons between acoustic field simulation and measured acoustic distribution data of normal and abnormal channels were conducted to evaluate the availability of proposed system and evaluation parameters. First, the impulse response characteristic of sample probe was investigated to classify the normal elements and abnormal elements. And then, normal channels and abnormal channels with abnormal element were chosen. The suggested 12 evaluation parameters were calculated using the acoustic fields of these channels. The availability of proposed automatic acoustic field measurement system and evaluation parameters was confirmed. And the performance evaluation of ultrasonic probe using acoustic field analysis could be easier and faster.
Parylene membrane based chemomechanical explosive sensor
Shin, Jae-Ha ; Lee, Sung-Jun ; Cha, Mi-Sun ; Kim, Mun-Sang ; Lee, Jung-Hoon ;
Journal of Sensor Science and Technology , volume 19, issue 6, 2010, Pages 497~503
DOI : 10.5369/JSST.2010.19.6.497
This paper reports a chemomechanical explosive sensor based on a thin polymer membrane. The sensor consists of thin parylene membrane and electrodes. Parylene membrane is functionalized with 4-mercaptophenol which interacts strongly with nitrotoluene based explosives. The membrane deflection caused by molecular interaction between the surface and explosives is monitored by capacitance between the membrane and the substrate. To measure the capacitance, electrodes are formed on the membrane and the substrate. While the previous cantilever system requires a bulky optical measuring system, this purely electric monitoring method offers a compact and effective system. Thus, this explosive sensor can be readily miniaturized and used in the field. The developed sensor can reliably detect dinitrotoluene and its limit of detection is evaluated as approximately 110 ppb.