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Johann Michler

Cette personne a quitté l’EPFL

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Publications associées (42)

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Electron Microscopy Mechanical Testing of Silicon Nanowires Using Electrostatically Actuated Tensile Stages

Reymond Clavel, Johann Michler, Jean-Marc Breguet

Two types of electrostatically actuated tensile stages for in situ electron microscopy mechanical testing of 1-D nanostructures were designed, microfabricated, and tested. Testing was carried out for mechanical characterization of silicon nanowires (SiNWs) ...

Institute of Electrical and Electronics Engineers2010

Mechanical Properties of Soft Biological Membranes for Organ-on-a-Chip Assessed by Bulge Test and AFM

Georg Fantner, Johann Michler, Veronika Cencen

Advanced in vitro models called “organ-on-a-chip” can mimic the specific cellular environment found in various tissues. Many of these models include a thin, sometimes flexible, membrane aimed at mimicking the extracellular matrix (ECM) scaffold of in vivo ...

2021

{10(1)over-bar2} twinning mechanism during in situ micro-tensile loading of pure Mg: Role of basal slip and twin-twin interactions

Roland Logé, Johann Michler, Xavier Maeder, Daniele Casari, Nicolò Maria Della Ventura

An SEM in situ uniaxial tensile testing setup allowing HR-EBSD acquisition during deformation was used to study the extension twinning mechanism in magnesium(Mg) at the micron scale. Structures were fabricated with two different crystal orientations, respe ...

2021

Micromechanics reveal strain rate dependent transition between dislocation mechanisms in a dual phase high entropy alloy

Johann Michler

An equimolar NiCoFeCrGa high entropy alloy having dual-phase composition was studied, where the constituent phases exhibit distinct mechanical properties. Micropillars with various diameters were created from two differently heat treated samples, then they ...

2025

A high-sensitivity and quasi-linear capacitive sensor for nanomechanical testing applications

Reymond Clavel, Johann Michler, Jean-Marc Breguet

The design, modeling, fabrication and characterization of triplate differential capacitive sensors employed in novel on-chip tensile and compression material testing systems are reported, where the capacitive sensors are integrated to measure the load on t ...

2009

Nanoindentation cracking in gallium arsenide: Part II. TEM investigation

Johann Michler, Jacques Giovanola, Jean-Daniel Ganière, Jean-Marc Breguet, Cédric Pouvreau

The nanoindentation fracture behavior of gallium arsenide (GaAs) is examined from two perspectives in two parent papers. In the first paper (part I), we address the morphology of the crack field induced by different types of indenters by means of in situ n ...

Cambridge University Press2013

Superstoichiometric (Al,Cr)N: Nitrogen's whereabouts and role in structure-property relationships

Johann Michler

The role of light elements in ceramic materials cannot be overestimated. By tuning their concentration, a whole multitude of mechanisms can be activated, directly influencing the material's functional properties. However, accurate determination of light el ...

2025

Orientation-dependent mechanical behaviour of electrodeposited copper with nanoscale twins

Stefano Mischler, Johann Michler

The mechanical properties of electrodeposited copper with highly-oriented nanoscale twins were investigated by micropillar compression. Uniform nanotwinned copper films with preferred twin orientations, either vertical or horizontal, were obtained by contr ...

Royal Soc Chemistry2016

3D printed microchannels for sub-nL NMR spectroscopy

Martinus Adela Maria Gijs, Jürgen Brugger, Giovanni Boero, Johann Michler, Marco Grisi, Maria Cristina Letizia, Laszlo Pethö, Enrica Montinaro

Nuclear magnetic resonance (NMR) experiments on subnanoliter (sub-nL) volumes are hindered by the limited sensitivity of the detector and the difficulties in positioning and holding such small samples in proximity of the detector. In this work, we report o ...

2018

Electrophoretic deposition of functionalized polystyrene particles for TiO2 multi-scale structured surfaces

Stefano Mischler, Johann Michler

Titanium is an interesting material for biomedical implants thanks to its physical and chemical properties. In particular, TiO2 coatings with a surface characterized by micro-patterning combined with nano-topography are extremely attractive for orthopaedic ...

2010

Impact of in situ nanomechanics on physical metallurgy

Johann Michler, Helena Van Swygenhoven

The mechanical response of modern alloys results from a complex interplay between existing microstructure and its evolution with time under stress. To unravel these processes, in situ approaches intrinsically have a critical advantage to explore the basic ...

2019

Nanoindentation cracking in gallium arsenide: Part I. In situ SEM nanoindentation

Johann Michler, Jacques Giovanola, Jean-Marc Breguet, Cédric Pouvreau

The nanoindentation fracture behavior of gallium arsenide (GaAs) is examined from two perspectives in two parent papers. The first paper (part I) focuses on in situ nanoindentation within a scanning electron microscope (SEM) and on fractographic observatio ...

Cambridge University Press2013

Comparative oxidation behavior of columnar and equiaxed Cr2AlC coatings

Johann Michler

The oxidation behavior of columnar and equiaxed Cr2AlC coatings in air at 990 °C is studied. During the transient heating-up period to 990 °C the two coating morphologies exhibit different oxidation behavior. In columnar coatings, faster Al diffusion along ...

2025

Adhesion tests for thermal spray coatings: Application range of normal indentation, tensile, shear and interfacial indentation methods

Jan-Anders Edvin Maansson, Yves Leterrier, Johann Michler, Mahmoud Hadad

2005

Mechanisms of wafer sawing and impact on wafer properties

Christophe Ballif, Johann Michler, Mathijs Pieter van der Meer

Silicon wafer wire-sawing experiments were realized with different sets of sawing parameters, and the thickness, roughness, and cracks depth of the wafers were measured. The results are discussed in relation to assumptions underlying the rolling-indenting ...

Wiley-Blackwell2010

CMOS and 3D Printing for NMR Spectroscopy at the Single Embryo Scale

Martinus Adela Maria Gijs, Jürgen Brugger, Giovanni Boero, Nicola Harris, Johann Michler, Franck Vincent, Marco Grisi, Beatrice Volpe, Maria Cristina Letizia, Laszlo Pethö, Enrica Montinaro

SWISS CHEMICAL SOC2019

Elevated temperature, micro-compression transient plasticity tests. on nanocrystalline Palladium-Gold: Probing activation parameters at the lower limit of crystallinity

Stefano Mischler, Johann Michler, Xavier Maeder

In this study, we probe the activation parameters and time-dependent plastic behavior of a nano crystalline Palladium-Gold alloy by means of elevated temperature micropillar compression experiments. All tests were conducted on a stable, displacement-contro ...

Pergamon-Elsevier Science Ltd2017

Additive manufacturing by template-assisted 3D electrodeposition: Nanocrystalline nickel microsprings and microspring arrays

Johann Michler, Laszlo Pethö, Patrik Schürch

In this work, we demonstrate that template-assisted electrodeposition is a viable route for fabricating fully metallic 3D micro-architectures with tailored properties. Firstly, we show that the process can be controlled with the aid of a 3D time-dependent ...

ELSEVIER2020

Elevated temperature, strain rate jump microcompression of nanocrystalline nickel

Stefano Mischler, Johann Michler

Nanocrystalline and ultrafine-grained materials show enhanced strain rate sensitivity (SRS) in comparison to their coarse grained counterparts. Majority of SRS measurements on nanocrystalline thin films reported in literature have focused on nanoindentatio ...

Taylor & Francis Ltd2015

Comparison of In Situ Micromechanical Strain-Rate Sensitivity Measurement Techniques

Stefano Mischler, Johann Michler, Xavier Maeder

Strain-rate sensitivity (SRS) measurements using transient small-scale techniques are becoming increasingly popular for investigating nanostructured films and microcomponents since they can provide fundamental insights into the plastic deformation mechanis ...

Springer Verlag2015