Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.
DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.
To determine self-consistently the time evolution of particle size and their number density in situ multi-angle polarization-sensitive laser light scattering was used. Cross-polarization intensities (incident and scattered light intensities with opposite p ...
Comprehensive counterion activity studies have revealed clear influence of the polyelectrolyte concn. and chain length on the polyion-counterion interaction, neither of which is evident from the existing theor. models. The counterion activity coeff. (fa) i ...
A method for a binder-free manufg. a nanostructured porous film, e.g. for use in solar cells, comprises the steps of: prepg. a suspension of semi-conducting nanometer-sized particles in a volatile suspending agent , depositing the particle suspension on a ...
BACKGROUND: We present the synthesis, characterization and initial structure-function analysis of a new class of bioactive agent that allows the application of techniques from colloid science to biological surfaces. Stable colloidal suspensions can be gene ...
We use multispeckle dynamic light scattering to measure the dynamic structure factor, f (q, τ), of gels formed by aggregation of colloids. Although the gel is an elastic solid, f (q, τ) nearly completely decays on long time scales, with an unusual form, f ...
Nanostructured ZnO films consisting of 150-nm sized particles were dye-sensitized with different ruthenium complexes. Incident photon-to-current conversion efficiencies were found to be dependent on dye concn. and on residence time of the ZnO film in the d ...
A general description of the electrolytic cond. behavior of highly charged strong polyelectrolytes in dil. and semidilute aq. solns. is presented. For the first time this model considers the effects of the molar mass, charge d. (for charge distances less t ...
Hyper Rayleigh scattering in solution is used for the determination of the first order hyperpolarizability b(colloid) of gold colloids in the size range 5–22 nm; these hyperpolarizabilities are found to range from 0.60 × 10–25 esu for 5 nm diameter colloid ...
An overview of the most recent experimental and modelling efforts on powder formation in reactive plasmas is given. The physics and chemistry of these dusty plasmas and their fundamental mechanisms leading to the production of nanometre-sized particles and ...
Particle formation has been investigated experimentally from the initial molecular precursors up to the final micron-sized particles in a low pressure silane rf capacitive discharge. Neutrals and ions were studied by quadrupole mass spectrometry in power-m ...
