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Evaluation of detectable depth on SH-SAW biosensor using antibody, antigen, and secondary antibody complexes
2019 IEEE International Ultrasonics Symposium (IUS)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
A shear horizontal surface acoustic wave(SH-SAW) based sensor measures multiple physical quantities of liquid specimens at the same time. Taking advantage of this measurement feature, SH-SAW sensors have been applied to wide varieties of sensors. SH-SAW biosensor is a form of SH-SAW sensor applications. SH-SAW biosensor detects immunoreactions occurring on its sensing area as velocity and/or ampli...Show More
Immunosensor Using 250MHz Shear Horizontal Surface Acoustic Wave Delay Line
Hiromi Yatsuda;Takashi Kogai;Mikihiro Goto;Koji Kano;Naoyuki yoshimura
In this paper, a rapid diagnostic system using a surface acoustic wave (SAW) based immunosensor is described. The immunosensor system composed of a disposable quartz based 250 MHz shear horizontal surface acoustic wave (SH-SAW) delay line and a palm-sized reader which has custom designed integrated circuit chip for electrical phase measurements. The SH-SAW immunosensor systems can measure specific...Show More
Evaluation of SH-SAW Biosensor in Whole Blood
Koji Kano;Yi-Qi Huang;Takashi Kogai;Yu-Tung Huang;Hiromi Yatsuda;Pei-Jer Chen;Szu-Heng Liu
2018 IEEE International Ultrasonics Symposium (IUS)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
This report introduces potentials of shear horizontal surface acoustic wave (SH-SAW) biosensor in point-of-care-testing (POCT) applications. In realizing POCT devices, SH-SAW biosensor has many technical features which enables a simple structure to reduce device costs and an easy operation to reduce workloads. In order to demonstrate SH-SAW biosensor performances, experimental results measured act...Show More
Regeneratable surface acoustic wave (SAW) immunosensor for monitoring of physiological information
Koji Toma;Koki Oishi;Takahiro Arakawa;Kohji Mitsubayashi;Naoyuki Yoshimura;Hiromi Yatsuda
2017 Eleventh International Conference on Sensing Technology (ICST)
Year: 2017 | Conference Paper |
A reusable immunosensor that employed surface acoustic wave (SAW) was developed for monitoring of physiological information. The SAW immunosensor was fabricated by modifying a propagation area of the SAW device with a self-assembled monolayer of pH tolerant protein, ORLA85, which allowed repeating of surface regeneration by changing pH, and thereby rapid and repetitive (semi-continuous) measuremen...Show More
Rayleigh SAW-Assisted SH-SAW Immunosensor on X-Cut 148-Y LiTaO3
In this paper, we describe a shear horizontal surface acoustic wave (SH-SAW) immunosensor that utilizes induce agitation by a Rayleigh SAW (R-SAW) on an X-cut 148-Y LiTaO3 substrate. On this substrate, SH-SAWs and R-SAWs with different frequencies can be effectively generated at an interdigital transducer (IDT). First, to consider the power flow angles of SH-SAWs and R-SAWs on this substrate, the ...Show More
Rayleigh SAW assisted SH-SAW immunosensor on X-cut 148-Y LiTaO3
2016 IEEE International Ultrasonics Symposium (IUS)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
This paper describes a shear horizontal surface acoustic wave (SH-SAW) immunosensor which utilizes an agitation using Rayleigh surface acoustic wave (R-SAW) on the substrate. On an X-cut 148-Y LiTaO3 substrate, SH-SAWs and R-SAWs can be effectively generated at an interdigital transducers (IDT) with different frequencies. SH-SAWs can be suitable for liquid phase sensors such as immunosensors. On t...Show More
SH-SAW biosensor on quartz
2016 IEEE International Frequency Control Symposium (IFCS)
Year: 2016 | Conference Paper |
This paper describes a shear horizontal surface acoustic wave (SH-SAW) immunoassay biosensor on a quartz substrate. The SH-SAW biosensor is a 250MHz SH-SAW delay-line which has a gold surface covered with antibodies. It is important to discuss the detection mechanism of SH-SAW biosensors on quartz. In this paper, the detection mechanism of SH-SAW biosensors are investigated, using three methods of...Show More
This paper describes a simulation for the shear horizontal surface acoustic wave (SH-SAW) immunoassay biosensor on quartz. A simulation method which was proposed by Campbell and Jones has been generally used to calculate SH-SAW propagation characteristics. In the analysis of the bioreactions with mass loading, the sensitivities of SH-SAW biosensors are too small to confirm the experimental results...Show More
Shear-horizontal surface acoustic wave biosensors for POCT
Hiromi Yatsuda;Takashi Kogai;Mikihiro Goto;Naoyuki Yoshimura
2014 IEEE International Frequency Control Symposium (FCS)
Year: 2014 | Conference Paper |
Cited by: Papers (8)
An immunoassay-based biosensor using shear horizontal surface acoustic wave (SH-SAW) devices for point-of-care-testing (POCT) applications is described. The SH-SAW biosensor is composed of a disposable SH-SAW biosensor chip and an electrical reader connected to the biosensor chip. The biosensor chip is a quartz-based 250 MHz SH-SAW delay-line which has a gold surface covered with antibodies. A pal...Show More
380MHz SH-SAW biosensors
2014 IEEE International Frequency Control Symposium (FCS)
Year: 2014 | Conference Paper |
The velocity and attenuation changes of shear horizontal surface acoustic wave (SH-SAW) biosensors with viscosity changes as a function of the operating frequencies are studied. It is confirmed that the velocity and attenuation changes of SH-SAW biosensors to the viscous changes are proportional to the square root of the frequency using the numerical calculations and experimental results. On the o...Show More
Optimization of gold film thickness for SH-SAW biosensor on quartz
2013 IEEE International Ultrasonics Symposium (IUS)
Year: 2013 | Conference Paper |
Cited by: Papers (4)
This paper describes a numerical analysis for the shear horizontal surface acoustic wave (SH-SAW) immunoassay biosensor. The numerical calculation method proposed by Campbell and Jones has generally been used to calculate SAW propagation characteristics. In this paper, a numerical calculation method for SH-SAW propagation characteristics, which is a modified method of Campbell and Jones involving ...Show More
This paper describes a numerical analysis for the shear horizontal surface acoustic wave (SH-SAW) immunoassay biosensor. A numerical calculation method which was proposed by Campbell and Jones has been generally used to calculate SAW propagation characteristics. In this paper, a numerical calculation method for SH-SA W propagation characteristics is proposed, which is an improved Campbell and Jone...Show More
Biosensor using shear-horizontal surface acoustic wave
2011 China-Japan Joint Microwave Conference
Year: 2011 | Conference Paper |
This paper describes an immunoassay-based biosensor which is composed of a disposable sensor device and a prototype electric reader with 14 × 10 × 4 cm3 in size. The sensor devices are fabricated using a 250 MHz shear horizontal surface acoustic wave (SH-SAW) delay-line on quartz substrates, which is composed of a transmitting interdigital transducer (IDT), receiving IDT, and a biochemical reactio...Show More
This paper describes a two-channel liquid-phase shear horizontal surface acoustic wave (SH-SAW) immunoassay biosensor. The sensor device was designed using a 250MHz SH-SAW delay-line on Quartz substrates, which is composed of a transmitting and receiving transducers and a biochemical reaction area in between them. Those transducers are protected from liquids by a glass lid and epoxy walls which ar...Show More
SH-SAW liquid sensor for methanol concentration sensing
Koji Kano;Takashi Kogai;Naoyuki Yoshimura;Hiromi Yatsuda;Jun Kondoh;Showko Shiokawa
2010 IEEE International Ultrasonics Symposium
Year: 2010 | Conference Paper |
Operating Direct Methanol Fuel Cell (DMFC) at ideal condition, it is extremely important to measure fuel concentration and maintain it within a proper range. Fuel concentration measuring devices have been required. SH-SAW based methanol concentration sensor is one of promising candidate for DMFC. The objective of this study is to demonstrate fundamental proper ties of SH-SAW sensor system. The eva...Show More
A wafer-level assembled SAW filter on 36Y-X LiTaO3 with a size of 1.6x0.8 mm is presented. The SAW filter has six solder balls with a size of 0.25 mm diameters. The reason of the use of the 0.25 mm balls is that it is easy to mount the devices onto a printed circuit board using a conventional placement machine. The SAW filter is designed for a GPS RF stage application and has a center frequency of...Show More
This paper describes an SH-SAW based sensor device which can be directly dipped into a liquid. The sensor device is composed of a two-channel SH-SAW delay line on a 36Y-X LiTaO3. Those IDTs are surrounded with epoxy walls with a 50 mum height and a 160 mum thickness. Since the epoxy walls are constructed by a photo-lithography technique using a thick epoxy based photo resist, the thickness of wall...Show More
Development of SH-SAW Sensing System for Liquids
Jun Kondoh;Yusuke Okiyama;Satoru Mikuni;Yoshikazu Matsui;Hiromi Yatsuda;Makoto Nara
2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum
Year: 2007 | Conference Paper |
Cited by: Papers (3)
Developments of sensors using surface acoustic wave (SAW) devices have been attractive. A shear horizontal SAW (SH-SAW) sensor can detect liquid properties and chemical reactions in liquid. For practical applications of the SAW sensor, it is necessary to discuss its properties. In this paper, the SH-SAW sensors with a floating electrode unidirectional transducer (FEUDT) or an interdigital transduc...Show More
One-chip sensor system using two different acoustic waves on ST-cut quartz is presented; one is shear horizontal surface acoustic wave (SH-SAW) and the other is surface acoustic wave (SAW). On the sensor chip, there is a SH-SAW delay-line that is composed of a transmitting interdigital transducer (IDT), receiving IDT and a biochemical reaction area in between them. And there is another IDT on the ...Show More
Power flow angles (PFAs) on the langasite (LGS) substrate with Euler angle of (0deg, 138.5deg,Psi), Psi = 25.7deg to 27.7deg are investigated for slanted finger interdigital transducer (SFIT) SAW filters to realize an optimum design. A tilted 380 MHz SFIT SAW filter with an aperture of 40 wavelengths and number of finger pairs of 500 for input and 300 for output is designed for the appropriate PFA...Show More
6B-5 Optimum Design for Slanted Finger SAW Filters on Langasite Substrate
Year: 2006 | Conference Paper |
Flip-chip STW filters in the range of 0.4 to 5 GHz
2002 IEEE Ultrasonics Symposium, 2002. Proceedings.
Year: 2002 | Conference Paper |
Cited by: Papers (3)
This paper describes surface transverse wave (STW) two-port resonator filters on rotated Y cut quartz substrate which are assembled using flip-chip technology. Those flip-chip STW filters are assembled in 3.2 mm /spl times/ 2.5 mm or 2.5 mm /spl times/ 2.0 mm ceramic packages using a gold-gold thermo-sonic face-down-bonding and a gold-tin solder sealing. Frequency characteristics of flip-chip STW ...Show More
Flip-chip STW filters and frequency trimming method
Proceedings of the 2002 IEEE International Frequency Control Symposium and PDA Exhibition (Cat. No.02CH37234)
Year: 2002 | Conference Paper |
This paper describes 2.4 GHz and 3.5 GHz flip-chip narrow-band filters using surface transverse waves (STWs) on quartz for oscillator applications. A Q of about 1300 and insertion losses of 3 dB and 5 dB are achieved for 2.4 GHz and 3.5 GHz flip-chip STW filters, respectively. Also, oscillator characteristics using the flip-chip STW filters are presented. In addition, trimming methods for flip-chi...Show More
Calculation and optical measurement of SAW diffraction pattern of slanted finger SAW filters on YZ LiNbO/sub 3/ and 128YX LiNbO/sub 3/
2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263)
Year: 2001 | Conference Paper |
Cited by: Papers (3)
The main purpose of the present paper is to investigate diffraction effects on SAW filters using slanted finger interdigital transducers (SFITs). Theoretical and experimental results of diffraction patterns of SFIT SAW filters on two different substrates, YZ LiNbO/sub 3/ and 128YX LiNbO/sub 3/ are presented. The calculated diffraction patterns are obtained using the angular spectrum of plane wave ...Show More
Automatic computer-aided design of SAW filters using slanted finger interdigital transducers
This paper describes a design procedure for surface acoustic wave (SAW) filters using slanted finger interdigital transducers (SFIT) that are suitable for mid-band or wideband applications. The SFITs cannot represent the impulse response directly, in contrast to apodized IDTs. A design method for SFITs based on a building-block approach in the frequency domain is described. An automatic computer-a...Show More
Diffraction in slanted finger SAW filters
2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)
Year: 2000 | Conference Paper |
Cited by: Papers (3)
The purpose of this paper is to describe diffraction effects on slanted finger interdigital transducers (SFITs). In order to analyze the diffraction effects, two methods to calculate SAW amplitude profiles radiated from an SFIT are presented. One is to calculate the electric power of the acoustic ports in the Smith's equivalent circuit for the sub-filters with different center frequencies, which w...Show More
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