The solubility data of carbon dioxide (CO2) in a series ionic liquids (ILs): 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM]+[BF4]−), 1-butyl-3-methylimidazolium ([BMIM]+[BF4]−), 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([OMIM]+[Tf2N]−), and their binary mixtures (i.e., [EMIM]+[BF4]− + [OMIM]+[Tf2N]− [BMIM]+[BF4]− [OMIM]+[Tf2N]−) at temperatures (313.2 333.2) K pressures up to 6 MPa were measured by high-pressure view-cell technique. mixed ILs tested (0, 20, 50,...

This article describes the application of hierarchical cascading technique (HCT) to 3-D finite-element method (FEM) analysis transverse-mode behaviors in surface acoustic-wave (SAW) devices. Mirror is proposed as a speed-up for HCT operation using general-purpose graphic processing unit (GPGPU). Two methods are implemented analysis: one impedance calculation and other SAW scattering coefficients at boundaries. It demonstrated that enables rapid successive simulation with scanning design...

In this paper, we propose the use of hierarchical cascading technique (HCT) for finite element method (FEM) analysis bulk acoustic wave (BAW) devices. First, implementation is presented FEM BAW It shown that traveling-wave excitation sources proposed by authors are fully compatible with HCT. Furthermore, a HCT-based absorbing mechanism also to replace perfectly matched layer (PML). Finally, it demonstrated how much more efficient in terms memory consumption and execution time than full analysis.

Abstract In this paper, we propose the use of “longitudinal resonance condition” for characterization two-dimensional propagation surface acoustic waves (SAWs) in periodic grating structures, and also show a procedure extracting parameters required behavior model from full-wave analysis. The condition is given by β x p = π, where period wavenumber mode longitudinal direction ( ). This based on fact that conventional SAW resonators, resonances including transverse ones occur when real but...

Abstract In this paper, we propose a physical model for the analysis of transverse modes in surface acoustic wave (SAW) devices. It is mostly equivalent to scalar potential (SP) theory, but sufficiently flexible include various effects such as anisotropy, coupling between multiple modes, etc. First, fundamentals proposed are established and procedures determining parameters given detailed. Then implemented partial differential equation mode commercial finite element software COMSOL. The...

In this paper, we investigate the impact of coupling with shear horizontal (SH) surface acoustic wave (SAW) on propagation Rayleigh SAW in periodic grating structures 128°YX-LiNbO3. First, frequency dispersion behavior longitudinal and lateral wavenumbers is calculated using finite element method (FEM) software COMSOL. It shown that causes (1) satellite stopband (2) variation anisotropy factor. also these phenomena remain even when electromechanical factor SH zero. Then, extended thin plate...

Abstract Background Cellulose degradation can determine mycelial growth rate and affect yield during the of Flammulina filiformis . The cellulose requires joint action a variety cellulases, some cellulase-related genes have been detected in mushrooms. However, little is known about transcriptional regulatory mechanisms degradation. Results In this study, FfMYB15 that may regulate expression cellulase gene FfCEL6B F. was identified. RNA interference (RNAi) showed positively regulated growth....

This paper discusses lateral propagation of surface acoustic waves (SAWs) in periodic grating structures when two types SAWs exist simultaneously and are coupled. The thin plate model proposed by the authors is extended to include coupling between different SAW modes. First, an infinitely long modeled discussed. Then, applied Al-grating/42° YX-LiTaO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (42-LT) substrate structure, it shown...

Design of side edges is one the most important tasks for realization high performance RF SAW/BAW devices. For purpose, authors proposed an FEM based technique where specified mode injected to border under concern through a damping mechanism, and scattering coefficients are estimated from calculated BAW field [1]. Even though this effective, its setup too complicated apply it complex structures such as SAW [1] F. Thalmayr, et al, IEEE Trans. UFFC, 57 (2010) p. 1641.

This paper investigates piston mode operation (PMO) when two kinds of surface acoustic waves (SAWs) exist and are coupled to each other. The extended thin plate model is used for the analysis. First, a PMO condition derived in closed form. It verified that possible without adding phase shifters by use SAW coupling. also shown this offers suppression transverse modes wider frequency range than conventional PMO. Then, parameters defined extracted various SiO <sub...

This paper discusses behavior of transverse modes in temperature compensated (TC) surface acoustic wave (SAW) devices employing the Si0 <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /128° rotated Y-cut LiNbO xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (128-LN) structure. The Rayleigh SAW on structure often exhibits anomalous behaviors such as rapid variation anisotropy factor γ with electrode and SiO thicknesses piston mode...

This paper investigates applicability of double raised borders to the piston mode film bulk acoustic resonator (FBAR). It is shown that it offers significant improvement quality factor at antiresonance without sacrificing spurious level when structure designed appropriately. enhancement attributed reduction mode-conversion and increase reflection coefficient border region.

This paper investigates the influence of coupling between Rayleigh and shear-horizontal (SH) surface acoustic waves (SAWs) on rotated Y-cut LiNbO3 to their electromechanical coupling. For purpose, a coupling-of-mode (COM) model including two SAWs is developed, influences excitation in addition factors are discussed. Then, its validity confirmed by comparison results with finite-element method analysis. Comparing conventional COM shows this extended could fit complex value area much better...

This paper proposes a technique to analyze surface acoustic wave (SAW) scattering at discontinuity in grating structures using the hierarchical cascading technique. The traveling excitation is applied generate specific SAW mode. Then displacement distribution obtained for passive regions. incident, reflected, and transmitted components are selectively evaluated by Fourier transform so as determine coefficients discontinuity. Rayleigh SAWs on SiO2/128°YX-LiNbO3 structure SH 42°YX-LiTaO3 used...

This paper proposes use of traveling wave type excitation sources for the scattering analysis RF SAW/BAW devices using finite element method(FEM). By generating a single mode selectively, behavior at arbitrary edges can be evaluated efficiently in frequency domain. After describing its detailed mechanism, two examples are presented SAW and BAW models. The results revealed effectiveness this technique these applications.

This paper describes extraction of parameters an extended coupling-of-modes (COM) model including coupling between Rayleigh and shear-horizontal (SH) surface acoustic waves (SAW) on the SiO2-overlay/Cu-grating/LiNbO3-substrate structure. First, dispersion characteristics two SAWs are calculated by finite element method (FEM), fitted with those given COM. Then variation COM is expressed in polynomials terms SiO2 Cu thicknesses rotation angle Θ LiNbO3. it shown how optimal giving SH SAW...

This paper describes application of the hierarchical cascading technique (HCT)to 3D FEM analysis transverse mode behaviors in Surface acoustic wave (SAW)devices. Two methods are implemented; one is impedance calculation, and another calculation SAW scattering coefficients at boundaries. It shown that HCT enables rapid for successive simulation with scanning design parameters. Thus, techniques discussed quite effective optimization device structures. also GPGPU can accelerate dramatically,...

is a typical tetrapolar heterologous edible mushroom, and its growth development regulatory mechanism has become research hotspot in recent years. The MAC1 protein transcription factor that perceives copper can regulate the expression of multiple genes, thereby affecting organisms. However, function mushrooms still unknown. In this study, two

This paper proposes a frequency domain analysis (FDA) based on the finite element method (FEM) for calculating reflector scattering characteristics of SAW tags. is applicable not only to devices employing conventional single-crystal substrates but also multi-layered ones. First, reflection are calculated short 128°YX-LiNbO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> and compared with result previously reported. Then applied...

This paper proposes a technique to analysis SAW scattering at discontinuity in grating structures using the hierarchical cascading technique. The traveling wave excitation is applied generate specific mode. Then displacement distribution obtained for passive regions. incident, reflected and transmitted components are selectively evaluated by Fourier transform so as determine coefficients discontinuity. Rayleigh SAWs on SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This paper describes lateral propagation of surface acoustic waves (SAWs) when two types SAWs are coupled. For the analysis, thin plate model proposed by authors is extended to include interaction between SAW modes. Firstly, wave in an infinitely long periodic grating modelled and discussed, it found that slowness curves can be changed mode coupling. Then, applied analysis two-dimensional on Al 42°YX-LiTaO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...