Publications associées à Onset Voltage Modeling of Micromachined Colloid Thrusters

A novel fatigue life prediction methodology based on energy dissipation in viscoelastic materials, synergistic effects of stress level, stress ratio, and temperature

Thomas Keller, Abdolvahid Movahedirad, Lulu Liu

This work introduces a new methodology to predict the fatigue life of viscoelastic materials by considering the creep effect on fatigue behavior under the concurrent effects of stress level, stress ratio, and temperature. The model established based on the ...

2024

Size dependence of second-harmonic scattering from nanoparticles: Disentangling surface and electrostatic contributions

Arianna Marchioro, Sylvie Roke, Bingxin Chu

Polarimetric angle-resolved second-harmonic scattering (AR-SHS) is an all-optical tool enabling the study of unlabeled interfaces of nano-sized particles in an aqueous solution. As the second harmonic signal is modulated by interference between nonlinear c ...

AIP Publishing2023

Controlling surface effects in extremely high aspect ratio gold plasmonic electrodes

Christian Santschi, Olivier Martin, Marco Riccardi

Nanofabrication is key to many technological advances, especially the challenge of merging nanophotonics with electronics. Here, we investigate the fabrication process of plasmonic interdigitated gold electrodes having a very high aspect ratio (i.e. long a ...

ELSEVIER2022

Electrokinetic, electrochemical, and electrostatic surface potentials of the pristine water liquid-vapor interface

Philip Robin Loche

Although conceptually simple, the air-water interface displays rich behavior and is subject to intense experimental and theoretical investigations. Different definitions of the electrostatic surface potential as well as different calculation methods, each ...

AIP Publishing2022

Alternative PF Coil Winding Pack Design for the EU DEMO

Pierluigi Bruzzone, Kamil Sedlák, Roberto Guarino, Mithlesh Kumar

The EUROfusion DEMO machine is at its pre-conceptual stage. The design of the magnet system for this machine is being developed in collaboration with several European research centers. The Poloidal Field (PF) coils proposed by the Swiss Plasma Center (SPC) ...

IEEE Institute of Electrical and Electronics Engineers2021

Self-Assembly at Water Nanodroplet Interfaces Quantified with Nonlinear Light Scattering

Sylvie Roke, Nikolay Smolentsev

The interfaces of water micro- and nanodroplets drive environmental, medical, catalytic, biological, and chemical biphasic processes. The interfacial droplet structure and electrostatics greatly determine the reactivity and efficiency of these processes. D ...

AMER CHEMICAL SOC2020

Surface and bulk stresses drive morphological changes in fibrous microtissues

Mahmut Selman Sakar, Erik Mailand, Nikolaos Bouklas

Engineered fibrous tissues consisting of cells encapsulated within collagen gels are widely used three-dimensional (3D) in vitro models of morphogenesis and wound healing. While cell-mediated matrix remodeling that occurs within these scaffolds has been ex ...

2019

Fast and accurate elastic analysis of laminated composite plates via isogeometric collocation and an equilibrium-based stress recovery approach

Pablo Antolin Sanchez, Alessandro Reali

A novel approach which combines isogeometric collocation and an equilibrium-based stress recovery technique is applied to analyze laminated composite plates. Isogeometric collocation is an appealing strong form alternative to standard Galerkin approaches, ...

2019

Realization of a Diamagnetically Levitating Rotor Driven by Electrostatic Field

Hannes Bleuler, Qingwen Cui, Jin Zhou, Ryosuke Kan, Yuanping Xu

In this paper, a novel configuration of frictionless diamagnetic levitation combined with electrostatic glass motor is presented. A 12.5 mm diameter disc shaped rotor comprised of pyrolytic graphite and glass is fabricated. The rotor disc is levitated stab ...

Institute of Electrical and Electronics Engineers2017

A Switched Oscillator Geometry Inspired by a Curvilinear Space-Part I: DC Considerations

Farhad Rachidi-Haeri

We present a new technique for the design and test of coaxial switched oscillators (SWOs). In this paper (Part I of a two-part paper), we concentrate on the electrostatic design of coaxial SWOs. We introduce a new design for the electrodes, which have been ...

Institute of Electrical and Electronics Engineers2016

A generalized Poisson and Poisson-Boltzmann solver for electrostatic environments

Nicola Marzari, Oliviero Andreussi

The computational study of chemical reactions in complex, wet environments is critical for applications in many fields. It is often essential to study chemical reactions in the presence of applied electrochemical potentials, taking into account the non-tri ...

Amer Inst Physics2016

Second Harmonic and Sum-Frequency Generation from Aqueous Interfaces Is Modulated by Interference

Sylvie Roke, Cornelis Ulrich Lütgebaucks

The interfacial region of aqueous systems also known as the electrical double layer can be characterized on the molecular level with second harmonic and sum-frequency generation (SHG/SFG). SHG and SFG are surface specific methods for isotropic liquids. Her ...

American Chemical Society2016

Penciling A Triboelectric Power Source On Paper

Jürgen Brugger, Xiao Sheng Zhang

We present a novel triboelectric nanogenerator (TENG) based on a paper-Teflon configuration fabricated by an easy and cost-efficient process. Carbon electrodes were hand-drawn by means of a graphite pencil on commercial paper cards, and the conductivity wa ...

Ieee2016

Cell Shape Dynamics Reveal Balance of Elasticity and Contractility in Peripheral Arcs

Jean-Jacques Meister, Alexander Verkhovskiy, Chiara Gabella, Benoît Vianay, Céline Jeanne Labouesse

The mechanical interaction between adherent cells and their substrate relies on the formation of adhesion sites and on the stabilization of contractile acto-myosin bundles, or stress fibers. The shape of the cell and the orientation of these fibers can be ...

Cell Press2015

Force-based higher-order beam element with flexural–shear–torsional interaction in 3D frames. Part I: Theory

João Saraiva Esteves Pacheco de Almeida

An innovative higher-order beam theory, capable of accurately taking into account flexural–shear–torsional interaction, is originally combined with a force-based formulation to derive the corresponding finite element. The selected set of higher-order defor ...

Elsevier2015

A preliminary study of the nonlinearity of adhesive point-fixings in structural glass facades

Pieter Christian Louter, Manuel Santarsiero

The recent demand for architectural transparency has drastically increased the use of glass material for structural purpose. However, connections between structural glass members represent one of the most critical aspects of glass engineering, due to the f ...

2014

Numerical modeling of the effects of oil on annular laminar film condensation in minichannels

John Richard Thome, Stefano Nebuloni

This paper presents a numerical model to predict laminar film condensation heat transfer in small channels of different internal geometries for miscible refrigerant-oil mixtures. The model includes the contributions of surface tension, axial shear stresses ...

Elsevier2013

A system for the measurements of lightning currents at the Säntis Tower

Farhad Rachidi-Haeri, Marcos Rubinstein, Pierre Zweiacker, Abraham Rubinstein, Mario Paolone, Carlos Alberto Romero Romero, Wolfgang Schulz

The paper presents the characteristics of a system suitably developed to measure lightning current waveforms on the Santis Tower in Switzerland. The paper first describes the configuration of the system then presents the characteristics of the measurement ...

Elsevier2012

Biomechanics of Vascular Wall : the Role of Structural Organization of Elastin and Collagen

Rana Saitta-Rezakhaniha

This thesis contributes to the field of biomechanics of vascular wall. The focus is particularly on the microstructure of vascular elastin and collagen constituents and their contribution to the macroscopic mechanical behavior of the wall. The analysis is ...

EPFL2010

Numerical modeling of laminar annular film condensation for different channel shapes

John Richard Thome, Stefano Nebuloni

This paper presents a theoretical and numerical model to predict film condensation heat transfer in mini and micro-channels of different internal shapes. The model is based on a finite volume formulation of the Navier-Stokes and energy equations and it inc ...

Elsevier2010