The Solubility Company Oy

Nanoform Finland Oy

Nanoform Finland Oyj

Heikki Räikkönen

Jouko Yliruusi

Edward Haeggström

Sami Svanbäck

Ilkka Lassila

Osmo Antikainen

Henrik Ehlers

Kai Falck

Jenni Pessi

Antti Meriläinen

An analysis method and device including detecting at least one particle of matter in a fluid inside in a reaction chamber and correlating a change in the particle to a physicochemical property of the matter.

Method and device for physicochemical characterization of materials

The invention relates to a method and a device for producing nanoparticles of organic substances, in particular by controlled expansion of pressurized solutions. The method comprises: admixing the organic substance and a supercritical fluid to form a mixture at a first pressure; decreasing the first pressure gradually to a second pressure so that a flow of the mixture is formed and nucleation of the organic substance in the mixture is initiated; and, decreasing the second pressure to a third pressure, so that solidification of the fluid of the mixture, comprising the nucleated organic substance, is initiated. The device comprises: a pressure chamber () for a mixture of the organic substance and a supercritical fluid; a collection chamber () for the nanoparticles; an outlet tube () connecting the pressure chamber to the collection chamber (); and, one or more second nozzles (). The outlet tube is provided with a pressure controlling means () configured to control pressure of the mixture within the outlet tube and a first nozzle () configured to allow expansion of the mixture to the collection chamber.

Method and a device for producing nanoparticles

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Helsinki, Finland

Heikki Räikkönen