Johann Toudert,1,* Lionel Simonot,2 Sophie Camelio,2 and David Babonneau2 1Instituto de Óptica, Laser Processing Group, CSIC, Serrano 121, 28006 Madrid, Spain 2Institut PPRIME, UPR 3346 CNRS, Université de Poitiers, Bât. SP2MI, Boulevard Marie et Pierre Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France (Received 16 December 2011; revised manuscript received 9 March 2012; published 10...

Models for the organization of sterols into regular arrays within phospholipid bilayers have been proposed previously. The existence of such arrays in real systems has been supported by the fact that concentration-dependent sterol properties show discontinuities at the cholesterol mole fractions corresponding to regular lattice arrangements. Experimental results presented here are based on a su...

Surface plasmon spectroscopy (SPS) is commonly implemented as an analytical tool to characterize thin kinetic processes and binding reactions at interfaces.1 Due to the limited sensitivity of SPS for the detection of dilute analytes of low molecular mass, surface plasmon coupled fluorescence (SPCF) or, alternatively, surface plasmon coupled emission (SPCE) has been proposed as an alternative me...

In this research, we developed a direct-flow surface plasmon resonance (SPR) immunosensor for ampicillin to perform direct, simple, and fast measurements of this important antibiotic. In order to better evaluate the performance, it was compared with a conventional amperometric immunosensor, working with a competitive format with the aim of finding out experimental real advantages and disadvanta...

The recent work reporting the observation of the increase in sensitivity for surface plasmon resonance (SPR) spectroscopy at smaller incident angles, is further studied with variation in the temperature of the SPR sensor. Using a simple theoretical model established previously, it is found that in spite of the increase in damping for the resonance at higher temperatures, the recent finding of t...

Surface Plasmon microscopy enables measurement of local refractive index on a far finer scale than prism based systems. An interferometric or confocal system gives the so-called V(z) curve when the sample is scanned axially, which gives a measure of the surface plasmon propagation velocity. We show how a phase spatial light modulator (i) performs the necessary pupil function apodization (ii) im...

We report on chemically prepared silver nanowires (diameters around 100 nm) sustaining surface plasmon modes with wavelengths shortened to about half the value of the exciting light. As we find by scattered light spectroscopy and near-field optical microscopy, the nonradiating character of these modes together with minimized damping due to the well developed wire crystal structure gives rise to...

We propose a new surface plasmon polariton concept for the nanoconcentration and long-range propagation of optical energy. The propagation loss from the mode can be greatly decreased, and the mode nanoconfinement can be simultaneously maintained, by appropriately modifying the field distribution of the surface plasmon polaritons. Furthermore, we present a metal nanowire placed in a dielectric h...

Collimated Gaussian beams are efficiently localized at the apex of a metal-coated axicon prism by surface plasmon excitations. We observed the light scattered at the apex and the light reflected by the prism. Intense scattered light was observed with the radial polarization incidence. Further, each incidence of the radial, azimuthal, and linear polarizations provided field distributions of brig...