A light-scattering goniometer for evanescent-wave dynamic light scattering (EWDLS) measurements at a liquid-fluid interface is introduced, and used for measurements on two charge-stabilized polystyrene colloid systems adsorbed to alkane-water interfaces. The goniometer allows an independent variation of the penetration depth and the scattering vector components parallel and perpendicular to a l...

The intricacy of the different parameters involved in cell adhesion to biomaterials and fate decision (e.g. proliferation, differentiation, apoptosis) makes the decoupling of the respective effects of surface properties, extra-cellular matrix protein adsorption and ultimately cell behaviour difficult. This work presents a micro-patterned polymer brush platform to control the adsorption of extra...

We present a detailed optical study of single-crystal bismuth using infrared reflectivity and ellipsometry. Large changes in the plasmon frequency are observed as a function of temperature due to charge transfer between hole and electron Fermi pockets. In the optical conductivity, an anomalous temperature dependent midinfrared absorption feature is observed. An extended Drude model analysis rev...

Ellipsometry techniques allow to measure polarization information of materials, requiring precise rotations optical components with different configurations lights and sensors. This results in cumbersome capture devices, carefully calibrated lab conditions, very long acquisition times, usually the order a few days per object. Recent polarimetric spatially-varying reflectance information, but li...

By exploiting colloidal properties, such as transparency, rheology and versatile chemistry, we propose to synthesize new photonic nanomaterials based on colloidal solutions and thin films. This contribution highlights our efforts to elaborate and to characterize nanostructures based on the ZnO-TiO2 system. Using a recently developed sol-gel route to synthesize new Ti4+@ZnO organosols, we were a...

Thin silica films were deposited on silicon wafers by the sol-gel technique, using spin coating. The sols were prepared by HC1 catalysis of tetraethylorthosilicate (TEOS) diluted in ethanol, using different molar ratios, R, of H20:TEOS. The films were then baked at various temperatures, and characterised using ellipsometry, profilometry, optical scattering and infrared spectroscopy. It was foun...

We report the effect of remote surface optical (RSO) phonon scattering on carrier mobility in monolayer graphene gated by ferroelectric oxide. fabricate transistors back-gated epitaxial (001) Ba 0.6 Sr 0.4 TiO 3 films, with field up to 23 000 cm 2 V −1 s achieved. Switching polarization induces nonvolatile modulation resistance and quantum Hall at low temperatures. Ellipsometry spectroscopy stu...

By exploiting colloidal properties, such as transparency, rheology and versatile chemistry, we propose to synthesize new photonic nanomaterials based on colloidal solutions and thin films. This contribution highlights our efforts to elaborate and to characterize nanostructures based on the ZnO–TiO2 system. Using a recently developed sol–gel route to synthesize new Ti@ZnO organosols, we were abl...