Raccurt O. – TechConnect Briefs

Luminescent Terbium/Europium chelates-based Silica Nanoparticles : Stability and Incorporation Efficiency measured by Radioactive Probe

Wartenberg N., Raccurt O., Mazzanti M., Imbert D., Bourgeat-Lami E., Commissariat à l’Energie Atomique, FR

We describe an original method based on europium-chelated radioactive measurements to investigate and compare the incorporation (by a reverse microemulsion-mediated sol-gel process without covalent bond) and the stability of two different organolanthanides into silica nanoparticles. [...]

Advanced fluorescent nanotracers: a broad field of application

Raccurt O., Samuel J., Poncelet O., Szenknect S., Tardif F., Laboratory of Tracers Technologies, FR

Optical and magnetic nanoparticles are both attractive fields of investigation which are gaining in importance due to their potential markets e.g. polymer nano-composite, colloidal dispersion, environmental monitoring or biomedical diagnostics, etc. Among all the spectroscopic [...]

Dispersion and incorporation of optical nanotracers

Samuel J., Raccurt O., Poncelet O., Tillement O., Tardif F., Commissariat à l’Energie Atomique, FR

Silica fluorescent nanoparticles of 40nm diameter are synthesized by a reverse microemulsion process. Numerous industrial applications involve the homogeneous incorporation of nanoparticles into a polymer matrix. Nevertheless, because of their low size, nanoparticles tend to [...]

Mechanical Behavior of Micro-Drops in EWOD Systems: drop extraction, division, motion and constraining

Berthier J., Clementz Ph., Jary D., Raccurt O., Claustre P., Peponnet C., Fouillet Y., CEA-LETI, FR

We present a novel contribution to the design of electrowetting microdevices (EWOD) by using an energy minimization approach. Altough the dynamics of motion of microdrops by electrowetting may be rapid, it is shown that, due [...]

An Analytical Model for the Prediction of Microdrop Extraction and Splitting in Digital Microfluidics Systems

Berthier J., Raccurt O., Clementz Ph., Jary D., Claustre P., Peponnet C., Fouillet Y., CEA-LETI, FR

In the preceding text submitted to Nanotech 2005, we have demonstrated that surface tension is the dominant force on liquid microdrops in EWOD microsystems and that the problem is mostly topological. Minimization of the surface [...]