Patent ID: 7220463

Claim:
The method for obtaining nanoparticles, comprising: dispersing a molten material to obtain liquid drops; supplying the resulting liquid drops of the material into a plasma formed in an inert gas at a pressure of 10 −4 –10 −1 Pa to form liquid nanoparticles; cooling of the liquid nanoparticles formed in the plasma to form solid nanoparticles; and depositing of the resulting solid nanoparticles onto a support; wherein the plasma parameters are satisfying the relations T e > 1.4 · 10 5 ⁢ R D ⁢ R ⁡ ( R D + R ) R D + 2 ⁢ R ( 1 ) n e 1 / 2 > 9 ⁢ τ d - 1 ⁡ ( 1 + R D r ) ( 2 ) 1 τ p + 10 3 L > 10 - 5 ⁢ T m 3 ( 3 ) where R and r are, respectively, the maximum and minimum radii of the liquid drops supplied into the plasma, m; R D = 7.5 · 10 3 ⁢ T e n e is the Debye screening length, m; T e is the electron temperature of the plasma, eV; n e is the density of the plasma, m −3 ; τ d is the time of transit of the liquid drops across a plasma zone, s; τ p is the lifetime of the plasma, s; T m is the melting point of a conducting material, K; L is the characteristic distance along which the plasma pressure decreases by a factor of e, m.