1:1 internal mode coupling strength in GaAs doubly-clamped MEMS beam resonators with linear and nonlinear oscillations

2020 ◽  
Vol 14 (1) ◽  
pp. 014001
Author(s):  
Ya Zhang ◽  
Yuri Yoshioka ◽  
Isao Morohashi ◽  
Xin Liu
Keyword(s):  
Coupling Strength ◽  
Mode Coupling ◽  
Nonlinear Oscillations ◽  
Internal Mode ◽  
Linear And Nonlinear

Electron-Phonon Coupling Strength of Specific Phonons from First Principles Lapw Calculations

1988 ◽  
Vol 141 ◽  
Author(s):  
H. Krakauer ◽  
R. E. Cohen ◽  
W. E. Pickett
Keyword(s):  
Coupling Strength ◽  
First Principles ◽  
Mode Coupling ◽  
Local Density ◽  
Matrix Elements ◽  
Dual Representation ◽  
Electron Phonon Interaction ◽  
Electron Phonon Coupling ◽  
Coupling Strengths ◽  
The Difference

AbstractElectron-phonon matrix elements, phonon linewidths and mode coupling strengths are being calculated for La2-xMxCuO4 (M-divalent cation, for paramagnetic x-0.0 and for x-0.15 in a rigid band picture) from first principles local density calculations. The change in potential due to a particular phonon mode is calculated from the difference of self-consistent one-electron potentials, and appropriate Fermi surface averages are carried out for selected modes, allowing us to obtain the phonon linewidth due to the electron-phonon interaction, and the corresponding coupling strength λQ. Here we establish the numerical accuracy within the dual representation of the potential used in the Linearized Augmented Plane Wave (LAPW) method. Evaluations of phonon linewidths and mode coupling strengths are presented for Al and Nb and compared with previous information on these modes. We present preliminary results for the full matrix elements and coupling of the La2CuO4 oxygen planar X-point breathing mode, and compare with a simpler approximation.

A HARMONY OF LINEAR AND NONLINEAR OSCILLATIONS: WIEN BRIDGE-BASED MIXED-MODE CHAOTIC CIRCUIT

2004 ◽  
Vol 13 (01) ◽  
pp. 137-149 ◽  
Author(s):  
RECAİ KILIÇ
Keyword(s):  
Mixed Mode ◽  
Nonlinear Oscillations ◽  
Chaotic Circuit ◽  
Chua Circuit ◽  
Circuit Structure ◽  
Lc Resonator ◽  
The Common ◽  
Tuning Circuit ◽  
Linear And Nonlinear ◽  
Switching Method

Mixed-mode chaotic circuit (MMCC) designed by combining the common dynamics of autonomous Chua's circuit and nonautonomous MLC (Murali–Lakshmanan–Chua) circuit is not only extremely simple system but also exhibits both autonomous and nonautonomous chaotic dynamics via a switching method. In this study, focusing on the alternative design of MMCC circuit, we have proposed Wien bridge-based MMCC circuit replacing the LC resonator of MMCC circuit with a Wien bridge-based RC configuration. Wien bridge-based MMCC circuit presents a harmony of both linear and nonlinear oscillations and it provides the possibility of studying linear oscillations, autonomous and nonautonomous chaotic oscillations in the same circuit structure. By using the Wien bridge RC configuration, MMCC circuit has more tuning circuit parameters and inductor element count is reduced. The circuit behavior of Wien bridge-based MMCC is confirmed by PSpice simulations.

Pseudo-three-dimensional convective cell motion in a magnetized plasma

1984 ◽  
Vol 31 (2) ◽  
pp. 231-238 ◽  
Author(s):  
P. K. Shukla ◽  
M. Y. Yu
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Mode Coupling ◽  
Three Dimensional ◽  
Convective Cell ◽  
Magnetized Plasma ◽  
Space Plasmas ◽  
Linear And Nonlinear ◽  
Convective Cells ◽  
Cell Motion

Linear and nonlinear mechanisms for generating convective cells with finite but small parallel (to the external magnetic field B0) wavelength are presented. The problems of mode-coupling as well as quasi-steady nonlinear mode structures are analytically studied. Possible applications in space plasmas are discussed.

Sign in / Sign up

Export Citation Format

Share Document