Results 61 to 70 of about 9,826 (198)
Understanding Relaxation Oscillator Circuits Using Fast-Slow System Representations
IEEE Access, 2023 We demonstrate the utilization of the fundamental principle of nonlinear dynamics, namely, the Liénard-type representations of ordinary differential equations, also referred to as fast-slow systems, to describe and understand relaxation ...
Thomas Voglhuber-Brunnmaier +1 more
doaj +1 more source
Advanced Functional Materials, Volume 36, Issue 12, 9 February 2026.Thermal transport in Ru and W thin films is studied using steady‐state thermoreflectance, ultrafast pump–probe spectroscopy, infrared‐visible spectroscopy, and computations. Significant Lorenz number deviations reveal strong phonon contributions, reaching 45% in Ru and 62% in W.
Md. Rafiqul Islam +14 more
wiley +1 more source
Acta Polytechnica, 2017 We draw attention on the fact that the Riccati-Padé method developed some time ago enables the accurate calculation of bound-state eigenvalues as well as of resonances embedded either in the continuum or in the discrete spectrum. We apply the approach to
Francisco Marcelo Fernández +1 more
doaj +1 more source
Efficient Frequency Conversion with Geometric Phase Control in Optical Metasurfaces
Advanced Science, 2022 Metasurfaces have appeared as a versatile platform for miniaturized functional nonlinear optics due to their design freedom in tailoring wavefronts.
Bernhard Reineke Matsudo +7 more
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Spectrum of One-Dimensional Anharmonic Oscillators
, 2003 We use a power-series expansion to calculate the eigenvalues of anharmonic oscillators bounded by two infinite walls. We show that for large finite values of the separation of the walls, the calculated eigenvalues are of the same high accuracy as the ...
A. +9 more
core +1 more source
Advanced Materials, Volume 38, Issue 7, 2 February 2026.A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller +15 more
wiley +1 more source
Injection locking in an optomechanical coherent phonon source
Nanophotonics, 2021 Spontaneous locking of the phase of a coherent phonon source to an external reference is demonstrated in a deeply sideband-unresolved optomechanical system.
Arregui Guillermo +8 more
doaj +1 more source
Path Integral Computation of Phonon Anharmonicity
, 2003 The partition function of an oscillator disturbed by a set of electron particle paths has been computed by a path integral method which permits to evaluate at any temperature the relevant cumulant terms in the series expansion.
Feynman +19 more
core +2 more sources
Solvent-Independent Anharmonicity for Carbonyl Oscillators [PDF]
The Journal of Physical Chemistry B, 2017 The physical origins of vibrational frequency shifts have been extensively studied in order to understand noncovalent intermolecular interactions in the condensed phase. In the case of carbonyls, vibrational solvatochromism, MD simulations, and vibrational Stark spectroscopy suggest that the frequency shifts observed in simple solvents arise ...
Samuel H. Schneider +3 more
openaire +2 more sources
Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation
Advanced Physics Research, Volume 5, Issue 2, February 2026.Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley +1 more source