Publications de Loïc Jacot-Descombes

Organic-inorganic-hybrid-polymer microlens arrays with tailored optical characteristics and multi-focal properties

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto

Plano-convex microlens arrays of organic-inorganic polymers with tailored optical properties are presented. The fine-tuning of each microlens within an array is achieved by confining inkjet printed drops of the polymeric ink onto pre-patterned substrates. ...

Optical Society of America2015

Liquid-Filled Sealed Mems Capsules Fabricated By Fluidic Self-Assembly

Jürgen Brugger, Loïc Jacot-Descombes, Rosario Maurizio Gullo, Massimo Mastrangeli

We present a new method to encapsulate functional liquids into sealed MEMS capsules by fluidic self-assembly. Self-assembly of 200 mu m SU-8 cargos and picoliter liquid co-encapsulation are driven by the interplay of global fluidic drag and short-range cap ...

IEEE2014

Inkjet printed superparamagnetic polymer composite hemispheres with programmed magnetic anisotropy

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto, Rosario Maurizio Gullo, Massimo Mastrangeli, Berna Ayse Özkale Edelmann, Christofer Hierold

We present the fabrication and characterization of large arrays of inkjet-printed superparamagnetic polymer composite (SPMPC) hemispherical microstructures. SPMPCs are appealing for applications in microsystems and nanorobotics due to the added functionali ...

Royal Soc Chemistry2014

In-liquid MEMS assembly by optical trapping

Jürgen Brugger, Loïc Jacot-Descombes, Rosario Maurizio Gullo

This paper presents a novel in-liquid method to manipulate and micro-assemble MEMS in 3D by means of holographic optical trapping and hydrophobic interaction. Up to eight traps can be simultaneously generated with a trapping stiffness of 5 pN/mu m each. SU ...

IEEE2013

Inkjet-printed SU-8 Hemispherical Microcapsules and Silicon chip Embedding

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto, Rosario Maurizio Gullo, Massimo Mastrangeli

Planar lithography techniques are not effective for precise fabrication of microdevices with hemispherical shapes. Drop-on-demand (DOD) inkjet printing (IJP) of photo-curable ink is a more appropriate fabrication approach as it takes advantage of the surfa ...

2013

Fluid-mediated parallel self-assembly of polymeric micro-capsules for liquid encapsulation and release

Alcherio Martinoli, Jürgen Brugger, Grégory Mermoud, Loïc Jacot-Descombes, Luis Guillermo Villanueva Torrijo, Cristina Martin Olmos, Victor Javier Cadarso Busto, Rosario Maurizio Gullo, Massimo Mastrangeli

Fluid-mediated self-assembly is one of the most promising routes for assembling and packaging smart microsystems in a scalable and cost-efficient way. In this work the pairwise fluidic self-assembly of 100 μm-sized SU-8 cylinders is studied with respect to ...

2013

Fluid-mediated self-assembly of MEMS micro-capsules for liquid encapsulation and release

Loïc Jacot-Descombes

EPFL2013

Acousto-fluidic system assisting in-liquid self-assembly of microcomponents

Alcherio Martinoli, Jürgen Brugger, Grégory Mermoud, Loïc Jacot-Descombes, Rosario Maurizio Gullo, Massimo Mastrangeli, Helmut Knapp

In this paper, we present the theoretical background, design, fabrication and characterization of a micromachined chamber assisting the fluidic self-assembly of micro-electro-mechanical systems in a bulk liquid. Exploiting bubble-induced acoustic microstre ...

2013

Heterogeneous material micro-transfer by ink-jet print assisted mould filling

Jürgen Brugger, Loïc Jacot-Descombes, Grégoire Maxime Smolik, Victor Javier Cadarso Busto, Vaida Auzelyte

A novel combination of ink-jet printing (IJP) and micro-transfer moulding (μ-TM) for high-resolution, heterogeneous material microstructuring is demonstrated. First, IJP is used to accurately fill the micro-cavities in an elastomeric mould, thus avoiding t ...

Elsevier2012

Fabrication of epoxy spherical microstructures by controlled drop-on-demand inkjet printing

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto, Rosario Maurizio Gullo

Well-controlled spherical microstructures open new possibilities for several MEMS devices, such as hemispherical microfluidic channels or micro-optical elements. However, machining of micro-spherical shapes has proven to be difficult with conventional plan ...

Institute of Physics2012

3D hybrid microcomponents self-assembled in liquid

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto, Rosario Maurizio Gullo

2012

Hydrodynamic Trap for Directed Self-Assembly of MEMS

Jürgen Brugger, Loïc Jacot-Descombes, Rosario Maurizio Gullo

This paper presents the realization of a hydrodynamic microfluidic trap with the goal of sorting MEMS for self-assembly experiments in liquid. A simplified analytical design rule has been compiled and numerically verified. Microfluidic devices have been fa ...

2012

Characterization of Hydrophobic Forces for in Liquid Self-Assembly of Micron-Sized Functional Building Blocks

Laure Aeschimann, Jürgen Brugger, Loïc Jacot-Descombes, Rosario Maurizio Gullo

This paper presents the experimental and numerical study of hydrophobic interaction forces at nanometer scale in the scope of engineering micron-sized building blocks for self-assembly in liquid. The hydrophobic force distance relation of carbon, Teflon an ...

2011 Materials Research Society2011

Microlenses with defined contour shapes

Jürgen Brugger, Loïc Jacot-Descombes, Victor Javier Cadarso Busto

Ink-jet printing of optical ink over SU-8 pillars is here proposed as a technology for obtaining microlenses with shape control. To demonstrate the flexibility of this method, microlenses with five different contour shapes (ranging from circular and ellipt ...

Optical Society of America2011