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Publications associées (78)

Model surfaces for human hair

The thesis describes the development of surfaces that model the surface of human hair in order to characterize the adsorption of detergents and perfumes. Three types of model surfaces were investigated consisting of (i) a self-assembled monolayer of protei ...

EPFL2006

MEMS-based nanopatterning: new challenges and opportunities for Materials Science

Jürgen Brugger

Micro-mechanical systems are exquisite tools for high-resolution surface patterning. As an alternative to traditional photolithography, they can be used for local material deposition at the sub-100 nm scale. This can be either done by means of liquid dispe ...

2006

Solvent mediated assembly of nanoparticles confined in mesoporous alumina

Francesco Stellacci

The controlled self-assembly of thiol stabilized gold nanocrystals in a mediating solvent and confined within mesoporous alumina was probed in situ with small angle x-ray scattering. The evolution of the self-assembly process was controlled reversibly via ...

2006

Block copolymer micelles as switchable templates for nanofabrication

Jürgen Brugger, Sivashankar Krishnamoorthy, Harry Heinzelmann, Raphaël Pugin

Block copolymer inverse micelles from polystyrene-block-poly-2-vinylpyridine (PS-b-P2VP) deposited as monolayer films onto surfaces show responsive behavior and are reversibly switchable between two states of different topography and surface chemistry. The ...

2006

Nanostencil Lithography - Quick & Clean: Towards a reliable scalable nanopatterning method

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart, Oscar Vazquez Mena, Nao Takano

Stencil lithography is a surface patterning technique that relies on the local deposition of material through miniaturized shadow mask membranes. This method has been used since many years in various implementations for the formation of patterns, mainly st ...

2006

Cadmium selenide nanocrystals for specific interactions with biomolecules

The goal of this work was to produce water-soluble fluorescent semiconductor nanocrystals suitable to interact specifically with biomolecules and thereby creating hybrid supramolecular structures composed of nanocrystals and proteins. Hydrophobic TOPO-coat ...

EPFL2005

Interactions of highly charged polyelectrolytes with monolayers of oppositely charged amphiphiles

Jutta Christine Wandrey, Vesela Malinova

Poly(vinylbenzylammonium chloride) (PVBAC) polyelectrolytes possessing defined chain lengths, narrow chain length distributions, uniform charge d., but substituents of different hydrophilicity and size at the quaternary ammonium group were used as model co ...

2004

A molecular view of cholesterol-induced condensation in a lipid monolayer

Sylvie Roke, Michael Müller

We investigate the interrnolecular interactions in a mixed phospholipid/cholesterol monolayer using the surface-specific technique of vibrational sum frequency generation. This technique allows us to monitor the conformational and orientational order in th ...

2004

Controlled Immobilization of Membrane Proteins to Surfaces for Fourier Transform Infrared Investigations

Horst Vogel, Per Rigler

We show that it is possible to immobilize membrane proteins uniformly and reversibly as self-assembled (sub)monolayers on nitrilotriacetic acid-covered sensor surfaces via hexahistidine sequences present either in the protein or in lipid membranes. Fourier ...

2004

Organisation and electrochemical reactivity at molecular interfaces

Organisation and heterogeneous photoreactivity of water-soluble zinc meso-tetrakis(4-carboxyphenyl) porphyrin (ZnTPPC) were investigated at polarisable liquid / liquid interfaces by systematically varying the organic phase solvent. The remarkable affinity ...

EPFL2004

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