Patent ID: 9476642
Filing Date: 2016-10-25
CPC Classification: B08B,B24C,F26B

Claim Text:
1. A method of removing a liquid membrane using a high-speed particle beam, the method comprising: a wet washing step of washing an object using a washing solution; and a dry washing step of simultaneously removing the washing solution remaining on the object and pollutants or foreign substances contained in the washing solution by injecting sublimation particles, wherein the dry washing step is characterized in that a particle generation gas passing through a nozzle including a first dilating portion and a second dilating portion is injected onto the object and an average dilation angle of the second dilating portion is wider than a dilation angle of the first dilating portion, and the dry washing step includes: a nucleus generation step of generating nuclei as the particle generation gas rapidly expands while passing through an orifice provided in a nozzle throat of the nozzle; a particle generation step of generating the sublimation particles as growth of nuclei is accomplished while the particle generation gas passes through the first dilating portion extended from an outlet of the nozzle throat, after performing the nucleus generation step; and a particle acceleration step of offsetting growth of a boundary layer and increasing speed of injecting the sublimation particles as the particle generation gas passes through the second dilating portion extended from an outlet of the first dilating portion and having the average dilation angle wider than the dilation angle of the first dilating portion, after performing the particle generation step.