Publications related to Cymatics

Optothermal shaping of lamb waves with square and spiral phase fronts

Romain Christophe Rémy Fleury, Janez Rus, Aleksi Antoine Bossart

We introduce a Lamb-wave medium with tunable propagation velocities, which are controlled by a two-dimensional heating pattern produced by a laser beam. We utilized it to demonstrate that waves in an appropriately designed medium can propagate in the form ...

2024

Quantitative Analysis of Nanorough Hydrogenated Si(111) Surfaces through Vibrational Spectral Assignment by Periodic DFT Calculations br

Christophe Ballif, Stefaan De Wolf, Jakub Holovsky

In this work, we use periodic density functional theory(periodic DFT) to rigorously assign vibrational spectra measured on nanorough wet-processed hydrogenated Si(111) surfaces. We compare Si(111)-(1x1) surfaces etched by dilute HF and NH4F, featuring two ...

AMER CHEMICAL SOC2022

Robust Fano resonance in a topological mechanical beam

Romain Christophe Rémy Fleury, Wei Wang

The advances in topological condensed matter physics enable the manipulation of classic waves in different ways, such as unidirectional propagation featuring the suppression of backscattering and the robustness against impurities and disorder, making it po ...

2020

Raman spectroscopy and lattice dynamics calculations of tetragonally-structured single crystal zinc phosphide (Zn3P2) nanowires

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Mirjana Dimitrievska

Earth-abundant and low-cost semiconductors, such as zinc phosphide (Zn3P2), are promising candidates for the next generation photovoltaic applications. However, synthesis on commercially available substrates, which favors the formation of defects, and cont ...

2020

Experimental mode shape determination of a cantilevered hydrofoil under different flow conditions

Mohamed Farhat, Eduard Egusquiza

The first three mode shapes of a cantilevered NACA0009 hydrofoil were experimentally investigated in air and under different flow conditions in a cavitation tunnel. First and second bending modes and first torsion mode were determined in resonance conditio ...

Professional Engineering Publishing2016

A sound diffusion system for directional sound enhancement

Hervé Lissek, Alain Dufaux, Xavier Falourd, Patrick Marmaroli, Alexandre Delidais, Baptiste Crettaz, Cédric Monchâtre

A loudspeaker array is described including several circular sound emitters that are bunked. One circular sound emitter can be either a circular array of loudspeakers (kind 1) or a toroidal loudspeaker (kind 2). The loudspeaker array can be composed of circ ...

André Roland S.A.2015

Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model

François Avellan, Mohamed Farhat, Vlad Hasmatuchi, Steven Roth, Francisco Botero

The present study concerns fluid-structure coupling phenomena occurring in a guide vane cascade of a pump-turbine scale model placed in the EPFL PF3 test rig. An advanced instrument set is used to monitor both vibrating structures and the surrounding flow. ...

International Association For Hydraulic Research2010

Oscillator Based on Suspended Gate MOS Transistors

Mihai Adrian Ionescu, Marco Mazza, Yogesh Singh Chauhan, Alexandru Rusu

The paper deals with the oscillator applications based on vibrating mode of the suspended gate SG-MOSFET transistor. In order to simulate the electrical behavior of the transistor a small-signal equivalent circuit of the gate is proposed and validated. An ...

2008

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Cymatics

Optothermal shaping of lamb waves with square and spiral phase fronts

Quantitative Analysis of Nanorough Hydrogenated Si(111) Surfaces through Vibrational Spectral Assignment by Periodic DFT Calculations br

Robust Fano resonance in a topological mechanical beam

Raman spectroscopy and lattice dynamics calculations of tetragonally-structured single crystal zinc phosphide (Zn3P2) nanowires

Experimental mode shape determination of a cantilevered hydrofoil under different flow conditions

A sound diffusion system for directional sound enhancement

Method and apparatus for a photoacoustic probe using a multimode fiber

Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model

Oscillator Based on Suspended Gate MOS Transistors

Graph Chatbot

Chat with Graph Search

Optothermal shaping of lamb waves with square and spiral phase fronts

Raman spectroscopy and lattice dynamics calculations of tetragonally-structured single crystal zinc phosphide (Zn3P2) nanowires

Quantitative Analysis of Nanorough Hydrogenated Si(111) Surfaces through Vibrational Spectral Assignment by Periodic DFT Calculations br

Experimental mode shape determination of a cantilevered hydrofoil under different flow conditions

Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model

Oscillator Based on Suspended Gate MOS Transistors

Robust Fano resonance in a topological mechanical beam

A sound diffusion system for directional sound enhancement

Method and apparatus for a photoacoustic probe using a multimode fiber