Csem Centre Suisse D'electronique Et De Microtechnique Sa&#x2014;recherche Et D&#xe9;veloppement

Centre Suisse D'electronique Et De Microtechnique Sa—recherche Et Developpement

Csem Centre Suisse D'electronique Et De Microtechnique Sa

Nicolas Blondiaux

Raphaël Pugin

Harald Walter

Edoardo Franzi

Alexander Stuck

Ross Stanley

David Hasler

Antonin Faes

Gaëlle Andreatta

Mickaël Guillaumee

Agata Lachowicz

Christophe Allebe

Ulrich Gubler

Method of manufacturing a micromechanical component intended to cooperate with another micromechanical component, the method comprising the steps of providing a substrate, forming a mould on said substrate, said mould defining sidewalls arranged to delimit said micromechanical component, providing particles on at least said sidewalls, depositing a metal in said mould so as to form said micromechanical component, and liberating said micromechanical component from said mould and removing said particles.

Methods for manufacturing micromechanical components and method for manufacturing a mould insert component

A security device for the identification or authentication of valuable goods is described, including a thin material layer () presenting a stochastic pattern including micro/submicrostructures, where the latter are arranged in blobs () each of which presents a complexity factor where L is the perimeter of the blob and A its area, and wherein blobs having a Cvalue greater than or equal to 2 cover at least 5%, preferably at least 15%, of the device surface. According to a preferred embodiment, the material layer may include a film including at least a first and a second polymers arranged respectively within a first and a second phases defining the micro/submicrostructures. Preferred processes of fabrication are also disclosed, as well as a method for securing a valuable good based on such a security device.

Unique security device for the identification or authentication of valuable goods, fabrication process and method for securing valuable goods using such a unique security device

The present invention relates to an isotropic zero-order diffractive color filter, to a method to manufacture an embossing tool and to a method to manufacture such a filter. The zero-order diffractive color filter comprises diffractive microstructures and a wave-guiding layer, wherein the diffractive microstructures possess a short range ordering over at least four times the period of the microstructures, and the diffractive microstructures possess a long range disordering over length scales of more than 100 &#x3bc;m.

Isotropic zero-order diffractive filter

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Les Geneveys-sur-Coffrane, Switzerland

Nicolas Blondiaux