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Publications associées (12)
Nanopatterning of a Stimuli-Responsive Fluorescent Supramolecular Polymer by Thermal Scanning Probe Lithography
Jürgen Brugger, Samuel Zimmermann
The miniaturization of nanometer-sized multicolor fluorescent features is of continuous significance for counterfeit security features, data storage, and sensors. Recent advances in engineering of stimuli-responsive supramolecular polymeric materials that ...
2017Thermal scanning probe lithography on a glassy supramolecular film creates a combination of topogrpahy and fluroescent nanostructures
Jürgen Brugger, Samuel Zimmermann
Here, we report the nanoscale thermal modification of a new type of fluorescent stimuli-responsive supramolecular polymer assembled from a building block (OPV(UPy)2-RG), which features an excimer-forming fluorescent oligo(phenylene vinylene) (OPV) chromoph ...
2016Hiding Information in Multiple Level-line Moirés
Secure documents often comprise an information layer that is hard to reproduce. Moiré techniques for the prevention of counterfeiting rely on the superposition of an array of transparent lines or microlenses on top of a base layer containing hidden informa ...
2015High-resolution 1D moirés as counterfeit security features
Jürgen Brugger, Roger Hersch, Katrin Sidler Arnet, Victor Javier Cadarso Busto, Sylvain Chosson
A moire is an interference pattern that appears when two different periodic structures are overlaid. The image created is extremely sensitive to small variations in the original layers and is thus very interesting for anti-counterfeit protection. We presen ...
Nature Publishing Group2013Authentication of documents and articles by moire patterns
The present invention relies on the moiré patterns generated when superposing a base layer made of base band patterns and a revealing line grating (revealing layer). The produced moiré patterns comprise an enlargement and a transformation of the individual ...
2010Pathchecker: An RFID application for tracing products in Supply-chains
In this paper, we present an application of RFIDs for supply-chain management. In our application, we consider two types of readers. On one part, we have readers that will mark tags at given points. After that, these tags can be checked by another type of ...
2009Method and Apparatus for Generating Digital Halftone Images by Using Multi Color Dithering
The invention provides a method and apparatus for the reproduction of color images by multi-color dithering. Multi-color dithering is an extension of bi-level dithering for halftoning an input image using as primary colors an arbitrary number of inks. The ...
2006Reproduction of security documents and color images with metallic inks
The present invention discloses methods and systems for printing by superposing a metallic ink and transparent inks. These methods and systems are useful for color separating images into superpositions of a metallic ink and transparent inks both for design ...
2004Authentication of documents and articles by moire patterns
The present invention relies on the moiré patterns generated when superposing a base layer made of base band patterns and a revealing line grating (revealing layer). The produced moiré patterns comprise an enlargement and a transformation of the individual ...
2004Incrustation de microstructures par écarts chromatiques
Electronic imaging devices produce the illusion of synthesizing continuous colors by applying halftones, which are repetitive structures of discrete micro-elements. By themselves, these microstructures do not carry any meaning: their only purpose is to foo ...
EPFL2003