scholarly journals Analysis of Thickness Vibration Frequencies of FBAR as Layered Structures with Piezoelectric Plates

2021 ◽  
Vol 140 (2) ◽  
pp. 105-112
Author(s):  
Yurun Chen ◽  
Jiansong Liu ◽  
Ji Wang ◽  
Tingfeng Ma ◽  
Jianke Du ◽  
...  
Keyword(s):  
Layered Structures ◽  
Vibration Frequencies ◽  
Piezoelectric Plates

Effect of high pressure-temperature on silicon layered structures as determined by X-ray diffraction and electron microscopy

2004 ◽  
Vol 27 (1-3) ◽  
pp. 415-418
Author(s):  
J. Bak-Misiuk ◽  
A. Misiuk ◽  
J. Ratajczak ◽  
A. Shalimov ◽  
I. Antonova ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Layered Structures ◽  
X Ray Diffraction ◽  
X Ray

Infrared Spectroscopy Characterization of Marine Shells

2001 ◽  
Vol 711 ◽  
Author(s):  
Octavio Gomez-Martinez ◽  
Daniel H. Aguilar ◽  
Patricia Quintana ◽  
Juan J. Alvarado-Gil ◽  
Dalila Aldana ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Crassostrea Virginica ◽  
Thermal Treatments ◽  
Vibration Modes ◽  
Lattice Vibrations ◽  
Vibration Frequencies ◽  
Mussel Shells ◽  
Carbonate Lattice

ABSTRACTFourier Transform infrared spectroscopy has been employed to study the shells of two kind of mollusks, American oysters (Crassostrea virginica) and mussels (Ischadium recurvum). It is shown that it is possible to distinguish the different calcium carbonate lattice vibrations in each case, mussel shells present aragonite vibration frequencies, and the oyster shells present those corresponding to calcite. The superposition, shift and broadening of the infrared bands are discussed. Changes in the vibration modes due to successive thermal treatments are also reported.

scholarly journals Porous fibres of a polymer blend for broadband microwave absorption

2021 ◽  
Author(s):  
Pritom J. Bora ◽  
Khadija K. Khanum ◽  
Riya K. Ramesh ◽  
K. J. Vinoy ◽  
Praveen C. Ramamurthy
Keyword(s):  
Microwave Absorption ◽  
Polymer Blend ◽  
Polyvinyl Butyral ◽  
Layered Structures ◽  
Polystyrene Sulfonate ◽  
Absorption Characteristics

Porous polyvinyl butyral and poly(3,4-ethylenedioxythiophene)polystyrene sulfonate fibers (porous PPPS-f) and non-porous PPPS-f solid fibres were fabricated via electrospinning. The microwave absorption characteristics were investigated for single and bi-layered structures.

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