CO2 snow cleaning is surprisingly powerful; it can remove everything from large, visible dust particles to tiny contaminants just 3–5 nanometers across. It doesn’t stop there; it’s also great at removing hydrocarbon-based grime and organic residues. What’s especially nice is that this method is gentle on surfaces: it’s non-destructive, nonabrasive, and leaves absolutely no residue behind. Plus, it’s a green solution since there’s no chemical waste to worry about.
Here’s how it works: the process starts by carefully expanding liquid or gaseous CO2. This creates tiny dry ice particles, which a high-speed gas stream then blasts onto the surface. When these dry ice particles hit, they knock loose contaminants of all sizes by momentum transfer. Hydrocarbons and organics are removed either by a quick solvent effect or by freeze-fracturing. Finally, the strong gas stream sweeps everything away, leaving your surface clean.
You can use CO2 snow cleaning at just about any stage, whether you’re doing an initial clean or a final polish. It’s trusted for all kinds of applications, from the semiconductor industry and disk drives to advanced research, vacuum technology, surface science, optics, medical devices, analytical instruments, telescopes, and even art conservation.
Applications:
- Removing contamination from metals, ceramics, polymers, and glasses
- Clearing away particles and stains from silicon (Si), indium phosphide (InP), and gallium arsenide (GaAs) wafers
- Cleaning all sorts of optics: coated lenses, laser components, infrared and ultraviolet optics, and even diamond-turned surfaces
- Getting samples ready for surface analysis, whether it’s Auger, XPS, SIMS, or atomic force microscopy (AFM)
- Supporting basic research in surface science
- Handling everyday cleaning needs in labs, on production lines, and in cleanrooms
- Prepping substrates for whatever comes next
- Helping out in the manufacturing of metal and ceramic parts and assemblies
- Cleaning components inside vacuum systems like bellows, electron optics, and ion optics
- Removing tiny particles from microelectronic and hybrid circuits
- Gently cleaning delicate works of art
- Polishing up telescope mirrors to
