Analysis of nonlinear frequency mixing in Timoshenko beams with a breathing crack using wavelet spectral finite element method
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115532
Abstract: Abstract The nonlinear interaction of a dual-frequency Lamb wave with a breathing edge-crack leads to the generation of frequency sidebands in the response spectrum; a phenomenon referred to as the nonlinear frequency mixing. These sidebands… read more here.
Keywords: frequency; spectral finite; nonlinear frequency; breathing crack ... See more keywords
Detection of Multiway Gamma Coordination Reveals How Frequency Mixing Shapes Neural Dynamics
Sign Up to like & getrecommendations! Published in 2019 at "Neuron"
DOI: 10.1016/j.neuron.2018.12.028
Abstract: A principle of communication technology, frequency mixing, describes how novel oscillations are generated when rhythmic inputs converge on a nonlinearly activating target. As expected given that neurons are nonlinear integrators, it was demonstrated that neuronal… read more here.
Keywords: coordination reveals; neural dynamics; multiway gamma; gamma coordination ... See more keywords
A combined averaging and frequency mixing approach for force identification in weakly nonlinear high-Q oscillators : Atomic force microscope
Sign Up to like & getrecommendations! Published in 2018 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2017.08.015
Abstract: We present a polynomial force reconstruction of the tip-sample interaction force in Atomic Force Microscopy. The method uses analytical expressions for the slow-time amplitude and phase evolution, ... read more here.
Keywords: mixing approach; averaging frequency; combined averaging; atomic force ... See more keywords
Microcrack localization using a collinear Lamb wave frequency-mixing technique in a thin plate
Sign Up to like & getrecommendations! Published in 2022 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac0da8
Abstract: A novel Lamb wave frequency-mixing technique is proposed for locating microcracks in a thin plate, which does not require the resonance condition of Lamb wave mixing and can accurately locate the microcracks through only one-time… read more here.
Keywords: plate; frequency; mixing technique; lamb wave ... See more keywords
Frequency-Mixing Intelligent Reflecting Surfaces for Nonlinear Wireless Propagation
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2021.3077085
Abstract: We introduce the concept of frequency-mixing intelligent reflecting surface (FMx-IRS), where the elements of the surface continuously change the phases of the incident signals. In this way, the FMx-IRS acts as a frequency mixer and… read more here.
Keywords: frequency mixing; propagation; intelligent reflecting; mixing intelligent ... See more keywords
Ultrasound Frequency Mixing for Enhanced Contrast Harmonic Imaging of Microbubbles
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2022.3179471
Abstract: Microbubbles (MBs) serve as contrast agents in diagnostic ultrasound (US) imaging. Contrast harmonic imaging (CHI) of MBs takes advantage of their nonlinear properties that generate additional harmonic frequencies in the received spectrum. However, CHI suffers… read more here.
Keywords: harmonic imaging; contrast; frequency; contrast harmonic ... See more keywords
Nonlinear Resonance of Cavities Filled with Bubbly Liquids: A Numerical Study with Application to the Enhancement of the Frequency Mixing Effect
Sign Up to like & getrecommendations! Published in 2018 at "Shock and Vibration"
DOI: 10.1155/2018/1570508
Abstract: This paper studies the nonlinear resonance of a cavity filled with a nonlinear biphasic medium made of a liquid and gas bubbles at a frequency generated by nonlinear frequency mixing. The analysis is performed through… read more here.
Keywords: resonance; frequency; nonlinear resonance; resonance cavities ... See more keywords
A Time-Modulated Transparent Nonlinear Active Metasurface for Spatial Frequency Mixing
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15030873
Abstract: In this article, a time-modulated transparent nonlinear active metasurface loaded with varactor diodes was proposed to realize spatial electromagnetic (EM) wave frequency mixing. The nonlinear transmission characteristic of the active metasurface was designed and measured… read more here.
Keywords: bias voltage; time; time modulated; active metasurface ... See more keywords
Comparative Modeling of Frequency Mixing Measurements of Magnetic Nanoparticles Using Micromagnetic Simulations and Langevin Theory
Sign Up to like & getrecommendations! Published in 2021 at "Nanomaterials"
DOI: 10.3390/nano11051257
Abstract: Dual frequency magnetic excitation of magnetic nanoparticles (MNP) enables enhanced biosensing applications. This was studied from an experimental and theoretical perspective: nonlinear sum-frequency components of MNP exposed to dual-frequency magnetic excitation were measured as a… read more here.
Keywords: micromagnetic simulations; comparative modeling; langevin theory; frequency ... See more keywords