Concept

Surface superhydrophobe

Publications associées (122)

Theoretical framework to analyze the combined effect of surface tension and viscosity on the damping rate of sloshing waves

Gravity force, surface tension, oscillating boundary layers, viscous dissipation, static meniscus, contact angle hysteresis, and moving contact lines are typical features of sloshing dynamics. All these ingredients influence capillary-gravity waves in a co ...

AMER PHYSICAL SOC2018

Bi-stability of contact angle and its role in tuning the morphology of self-assisted GaAs nanowires

Anna Fontcuberta i Morral, Lucas Güniat, Gözde Tütüncüoglu, Martin George Friedl, Heidi Andrea Potts, Jean-Baptiste Leran, Wonjong Kim, Luca Francaviglia, Vladimir Dubrovskii, Jelena Vukajlovic Plestina

We demonstrate the existence of two stable contact angles for the gallium droplet on top of self-assisted GaAs nanowires grown by MBE on patterned silicon substrates. Contact angle around 130 degrees fosters a continuous increase in the nanowire radius, wh ...

IEEE2018

Mixed gold and platinum nanostructured layers for all-solid-state ion sensors

Giovanni De Micheli, Sandro Carrara, Irene Taurino, Danilo Demarchi, Francesca Criscuolo, Lucia Lobello

The great interest in portable and wearable monitoring systems has promoted in recent years a major expansion of all-solid-state Ion-Selective Electrodes (ISEs). Nanostructured Solid-Contacts (SCs) have shown a promising potential in order to eliminate the ...

IEEE2018

When droplets deform, break up and propel microswimmers

Giacomo Gallino

This thesis investigates the motion and breakup of droplets in low-Reynolds-number flows, focusing on two aspects. In the first part, we study the breakup of droplets in subcritical flow conditions, when there exists a linearly stable solution for the drop ...

EPFL2018

Designing soft materials with interfacial instabilities in liquid films

Pedro Miguel Nunes Pereira de Almeida Reis, Pierre-Thomas Paul Brun

Natural soft materials harness hierarchy and structures at all scales to build function. Adapting this paradigm to our technological needs, from mechanical, phononic and photonic metamaterials to functional surfaces prompts the development of new fabricati ...

2018

Combination of additive and subtractive laser 3D microprocessing in hybrid glass/polymer microsystems for chemical sensing applications

Yves Bellouard, Matthieu Perrenoud

We present a novel hybrid glass-polymer micromechanical sensor by combining two femtosecond laser direct writing processes: laser illumination followed by chemical etching of glass and two-photon polymerization. This incorporation of techniques demonstrate ...

Optical Society of America2017

Lattice Distortions Drive Electron-Hole Correlation within Micrometer-Size Lead-Iodide Perovskite Crystals

Giulia Grancini

We use ultrafast transient absorption microscopy to map the effect of structural disorder on the photophysical properties within a micrometer-sized crystal of methylammonium lead iodide (CH3NH3PbI3) perovskite. We reveal a spatial inhomogeneity of the stru ...

Amer Chemical Soc2017

A Facile in Situ and UV Printing Process for Bioinspired Self-Cleaning Surfaces

Yves Leterrier, Sara Dalle Vacche, Marina Aymara González Lazo, Feyza Karasu Kiliç, Ioannis Katrantzis

A facile in situ and UV printing process was demonstrated to create self-cleaning synthetic replica of natural petals and leaves. The process relied on the spontaneous migration of a fluorinated acrylate surfactant (PFUA) within a low-shrinkage acrylated h ...

MDPI2016

Self-Replenishing, Wear-Resistant and Anti-Sticking Surfaces Based on Liquid Impregnation of Microstructured Mesoporous α-AI₂O₃ [Alpha Alumina] Matrices

Sriharitha Rowthu

Fabrication of wear-resistant omniphobic surfaces is a persistent scientific challenge and essential for various applications such as in paint industries, fluid transport, antifouling, reduction of friction drag on ship hulls, and stain resistant textiles. ...

EPFL2016

Method for the preparation of a coating

Yves Leterrier, Holger Frauenrath, Stephen Schrettl, Bjoern Schulte

The invention relates to a method for the preparation of a coating comprising at least one coating layer on a solid substrate, said method comprising the steps of a, providing monomers of the type R-(N)x-(L)m-(C≡C)n-(L']o(N')y-R', wherein R is a head moiet ...

2016

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