Compact device and process for the production of nanoparticles in suspension
AssigneeUniversitäT Duisburg-Essen
InventorsStephan Barcikowski, Marcus Lau, Friedrich Waag
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Abstract
The invention shows a device for producing nanoparticles, the device having a pulsed laser with a scanning device for guiding the beam of the laser over a target that is fixed in a flow-through chamber. The flow-through chamber is reversibly connected to a supply line for carrier fluid, so that the flow-through chamber is exchangeable e.g. for a further flow-through chamber having a different target and/or a different dimensioning.
Claims27
A device for the production of nanoparticles, comprising a pulsed laser, a scanning device to guide a beam of the laser, a flow-through chamber having a target support wall, a radiation-transparent wall opposite the target support wall, a supply line connected to at least one reservoir for carrier fluid and connected to the flow-through chamber, a controlled conveying device arranged in the supply line and configured to control a flow velocity of carrier fluid within the flow-through chamber in a range of 1 to 10 mm/s, wherein the laser has a maximum power of 5 W and is configured to emit pulses having a pulse energy of 0.01 to 10 mJ and a pulse duration of 0.5 to 10 ns with a repetition rate of 500 to 5000 Hz and a fluence of 0.1 to 10 J/cm2.
A process for producing nanoparticles suspended in a carrier liquid, comprising irradiating a target with laser radiation which is guided over the target that is mounted in a flow-through chamber which has a radiation-transparent wall section opposite the target while the carrier liquid flows through the flow-through chamber, the carrier liquid being supplied from a reservoir through a supply line in which a controlled conveying device is arranged, wherein the conveying device controls the flow of the carrier liquid to a flow velocity of 1 to 10 mm/s through the flow-through chamber, and wherein the laser provides a maximum power of 5 W and emits pulses with a pulse energy of 0.01 to 10 mJ and a pulse duration of 0.5 to 10 ns with a repetition rate of 500 to 5000 Hz and a fluence of 0.1 to 10 J/cm2.
Dependencies are inferred from the claim text.