scholarly journals High frequency QCM based sensor system for sensitive detection of dissolved analytes

2010 ◽  
Vol 5 ◽  
pp. 835-837 ◽  
Author(s):  
B.P. Stehrer ◽  
R. Schwödiauer ◽  
S. Bauer ◽  
I.M. Graz ◽  
P.D. Pollheimer ◽  
...  
2006 ◽  
Vol 55 (4) ◽  
pp. 237-243
Author(s):  
Kazuki KAGESHIMA ◽  
Takaya TAKEI ◽  
Yoshinori SUGITANI

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000162-000166
Author(s):  
Haolun Zhang ◽  
Thomas Neuberger ◽  
Steve Perini ◽  
Mike Lanagan ◽  
Elena Semouchkina ◽  
...  

Low temperature co-fired ceramics (LTCC) have been developed for RF and microwave circuits for a number of applications (i.e. cell phones and wireless systems). The same attributes that make LTCC an important technology for telecommunications are also important for sensors. Compact three-dimensional architectures with low dielectric loss materials are available with LTCC technology. The underlying electric and magnetic responses of materials in the RF and microwave frequency ranges will be discussed and these unique responses can be exploited in a sensor system. Gases, liquids and solids have unique dipolar responses in the RF and microwave ranges. For example, the dielectric relaxation of water has been investigated in water/starch mixtures. Classic dipolar relaxation of water occurs at 30GHz and additional relaxation mechanisms have been found in the 1–10 GHz range because of the starch gelation process. These relaxations could be the basis for a sensor system to monitor the gelation of food starches. In addition, miniature coil assemblies for magnetic resonance imaging (MRI) systems with operation in the 300 MHz to 850 MHz range will be presented. These types of coils with additional passive components are envisioned in a LTCC-based circuit topology.


2012 ◽  
Vol 482-484 ◽  
pp. 1161-1164
Author(s):  
Xiao Jun Li ◽  
Wen Ming Zhu ◽  
Yu Guo Wang ◽  
Yu Zhang

In order to find out the feasibility to obtain dynamics peculiarity in high frequency domain, the dynamic peculiarity on detecting method with strain gages is researched. By modeling and analyzing qualitatively, the characteristics of low frequency are indicated for strain gages sensor system. Comparing with the test signal difference between vibration acceleration sensor and strain gages sensor system at the three domain which are time, amplitude and frequency, the characteristics of low frequency are proved for the one. Therefore while detecting the high frequency dynamic signal with strain gages sensor system, the high frequency information is attenuated, the mostly spectrum information is lost.


2021 ◽  
Vol MA2021-01 (55) ◽  
pp. 1402-1402
Author(s):  
Xin Liu ◽  
Ying Gan ◽  
Fengheng Li ◽  
Yong Qiu ◽  
Deming Jiang ◽  
...  

2015 ◽  
Vol 4 (1) ◽  
pp. 81-88
Author(s):  
M. Sampl ◽  
W. Macher ◽  
C. Gruber ◽  
T. Oswald ◽  
M. Kapper ◽  
...  

Abstract. We present the high-frequency properties of the eight electric field sensors as proposed to be launched on the spacecraft "RESONANCE" in the near future. Due to the close proximity of the conducting spacecraft body, the sensors (antennas) have complex receiving features and need to be well understood for an optimal mission and spacecraft design. An optimal configuration and precise understanding of the sensor and antenna characteristics is also vital for the proper performance of spaceborne scientific instrumentation and the corresponding data analysis. The provided results are particularly interesting with regard to the planned mutual impedance experiment for measuring plasma parameters. Our computational results describe the extreme dependency of the sensor system with regard to wave incident direction and frequency, and provides the full description of the sensor system as a multi-port scatterer. In particular, goniopolarimetry techniques like polarization analysis and direction finding depend crucially on the presented antenna characteristics.


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