New instrumentation for the comprehension of chemical reactions under microwave and classical heating with the aid of a wide frequency band dielectric spectroscopy

2001 ◽  
Vol 15 (3) ◽  
pp. 223-229 ◽  
Author(s):  
S. Chevalier ◽  
O. Meyer ◽  
R. Weil ◽  
A. Fourrier-Lamer ◽  
A. Petit ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Frequency Band ◽  
Dielectric Spectroscopy ◽  
Wide Frequency Band ◽  
New Instrumentation

scholarly journals Physical Principles of a Piezo Accelerometer Sensitive to a Nearly Constant Signal

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3258 ◽  
Author(s):  
Valery Gupalov ◽  
Alexander Kukaev ◽  
Sergey Shevchenko ◽  
Egor Shalymov ◽  
Vladimir Venediktov
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Frequency Band ◽  
Linear Acceleration ◽  
High Sensitivity ◽  
Element Model ◽  
Wide Frequency Band ◽  
Piezoelectric Accelerometer ◽  
The Finite Element Model ◽  
Physical Principles

The paper considers the construction of a piezoelectric accelerometer capable of measuring constant linear acceleration. A number of designs are proposed that make it possible to achieve high sensitivity with small dimensions and a wide frequency band (from 10−5 Hz). The finite element model of the proposed design was investigated, and its output characteristic and scale factor (36 mV/g) were obtained.

scholarly journals Flexible ultrathin metamaterial absorber for wide frequency band, based on conductive fibers

2018 ◽  
Vol 19 (1) ◽  
pp. 711-717 ◽  
Author(s):  
Young Ju Kim ◽  
Ji Sub Hwang ◽  
Bui Xuan Khuyen ◽  
Bui Son Tung ◽  
Ki Won Kim ◽  
...  
Keyword(s):  
Frequency Band ◽  
Metamaterial Absorber ◽  
Wide Frequency Band ◽  
Conductive Fibers

scholarly journals Nonlinearity Measurements Using Alternating Current

1978 ◽  
Vol 5 (2) ◽  
pp. 91-98 ◽  
Author(s):  
Vladimír Ryšánek ◽  
Carlo Corsi ◽  
Arnaldo d'Amico
Keyword(s):  
Frequency Band ◽  
Measurement Technique ◽  
Alternating Current ◽  
Noise Measurement ◽  
Wide Frequency Band ◽  
Semiconductor Structures ◽  
Different Types ◽  
Homogeneous Structures ◽  
Lock In

The nonlinearity measurement technique described uses an adapted conventional lock-in-amplifier. This technique enables us to measure small nonlinearities over a wide frequency band and is more sensitive than the 1/f noise measurement used to detect non-homogeneous structures in conductors, resistors and semiconductor components. Results illustrating uses of this method are presented for different types of resistor and semiconductor structures.

Wide Frequency Band Characterization

2013 ◽  
pp. 603-638
Author(s):  
D. Flandre ◽  
J.-p. Raskin ◽  
V. Kilchytska
Keyword(s):  
Frequency Band ◽  
Wide Frequency Band

scholarly journals Unidirectional Invisibility Induced by Complex Anti-Parity–Time Symmetric Periodic Lattices

2019 ◽  
Vol 9 (18) ◽  
pp. 3808 ◽  
Author(s):  
Hui Cao ◽  
Dong Zhao ◽  
Ming Fang ◽  
Huang Guo ◽  
Yonghong Hu ◽  
...  
Keyword(s):  
Reflection Coefficient ◽  
Parameter Space ◽  
Frequency Band ◽  
Angular Frequency ◽  
Lateral Shift ◽  
The Other ◽  
Wide Frequency Band ◽  
Highly Sensitive ◽  
Highly Sensitive Sensors

Complex anti-parity-time symmetric periodic lattices, in a wide frequency band, can act as unidirectional invisible media. The reflection from one end is suppressed while it is enhanced from the other. Furthermore, unidirectional laser points (ULPs) which correspond to the poles of reflection from one end, arise in the parameter space composed of the permittivity and angular frequency. The phase of the reflection coefficient changes sharply near the ULPs. Subsequently, large lateral shift which is proportional to the slope of phase could be induced for the reflected beam. The study may find great applications in unidirectional invisibility, unidirectional lasers and highly sensitive sensors.

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