Abstract: A process for producing nanoclusters of silicon and/or germanium exhibiting a permanent magnetic and/or electric dipole moment for adjusting the work function of materials, for micro- and nano-electronics, for telecommunications, for “nano-ovens”, for organic electronics, for photoelectric devices, for catalytic reactions and for fractionation of water.

Abstract: The invention relates to a method of analyzing particles, in particular particles of diameter less than 1 ?m, the method comprising the following steps: firing laser shots into a cold plasma (45) at low pressure; using an optical spectrometer device (60) to acquire emission spectra of the light emitted by the plasma as a result of the laser shots, in such a manner that for each acquired spectrum, an acquisition period begins no later than 100 ns after firing the laser shot; and analyzing the particles present in the plasma on the basis of the emission spectra. A system for detecting and/or analyzing particles by performing the method.

Abstract: The invention relates to a method of analyzing particles, in particular particles of diameter less than 1 ?m, the method comprising the following steps: firing laser shots into a cold plasma (45) at low pressure; using an optical spectrometer device (60) to acquire emission spectra of the light emitted by the plasma as a result of the laser shots, in such a manner that for each acquired spectrum, an acquisition period begins no later than 100 ns after firing the laser shot; and analyzing the particles present in the plasma on the basis of the emission spectra. A system for detecting and/or analyzing particles by performing the method.

Abstract: This invention relates to a method for determining the average surface radius ro and/or the density r of the particles of a nanopowder in a sample levitating in an electropositive plasma with a volume V formed between a first electrode powered by a radiofrequency voltage and a second electrode with a fixed voltage, in particular a ground one, characterized in that: V is the amplitude at the measuring time t of the radiofrequency voltage RF powering the first electrode when the powder is present in the plasma, V is the amplitude of said radiofrequency voltage powering the first electrode in the absence of powder in the plasma, V is the self-polarization voltage of the first electrode at the time t when the powder is present in the plasma, V is the self-polarization voltage of the first electrode in the absence of powder in the plasma, ?AB is the surface variation of the second electrode in the presence of powder at the time t relative to a situation in which powder is absent, and the values of n and K are dete

Abstract: This invention relates to a method for determining the average surface radius ro and/or the density r of the particles of a nanopowder in a sample levitating in an electropositive plasma with a volume V formed between a first electrode powered by a radiofrequency voltage and a second electrode with a fixed voltage, in particular a ground one, characterised in that: V is the amplitude at the measuring time t of the radiofrequency voltage RF powering the first electrode when the powder is present in the plasma, V is the amplitude of said radiofrequency voltage powering the first electrode in the absence of powder in the plasma, V is the self-polarisation voltage of the first electrode at the time t when the powder is present in the plasma, V is the self-polarisation voltage of the first electrode in the absence of powder in the plasma, ?AB is the surface variation of the second electrode in the presence of powder at the time t relative to a situation in which powder is absent, and the values of n and K are dete