ULTRASONIC NOZZLE
MicroStream™ Nozzle
The MicroStream™ Ultrasonic Nozzle is a dual-fluid atomization platform engineered to generate ultra-narrow, focused droplet streams for high-precision coating and aerosol delivery. By combining a coaxial gas stream with an annular liquid path, this nozzle achieves efficient entrainment and directional focusing of atomized droplets, making it ideal for micro-scale film deposition.
Nozzle Frequency
60 kHz or 120 kHz
Minimum Spray Width
~0.007 inches (178 µm)
Max Flow Rate
~3 mL/min
Atomization
Ultrasonic + coaxial gas entrainment
Droplet Size
10–40 µm depending on frequency
Compatible Fluids
< 10 cP; solvents, colloids, drug coatings
Gas Focusing Type
Internal cannula laminar air stream
How This Ultrasonic Spray Nozzle Works
The MicroStream™ system incorporates two coaxial fluid paths: an internal gas conduit (cannula) that delivers a central laminar air stream, and an outer annular channel for liquid delivery. Atomization occurs at the ultrasonic nozzle tip, where high-frequency vibrations break up the fluid into uniformly sized droplets. The central gas flow entrains these droplets, compressing them into a focused spray column with widths as narrow as 0.007 inches (0.178 mm), depending on flow rate, power, and fluid properties. Independent adjustment of gas and liquid flows allows precise tuning of spray focus and deposition rate. The same two paths can also carry two liquids: the nozzle atomizes both, and if desired they are mixed at the last instant on the nozzle tip.
Key Features
Ultra-Narrow Spray Widths
Down to 0.007″ (178 µm) for microscale targeting.
Dual-Fluid Atomization Control
Independent gas and liquid flow adjustment for precise tuning of spray focus and deposition rate.
Two-Liquid Operation
The dual-fluid design can carry and atomize two liquids, which can, if desired, be mixed at the last instant on the nozzle tip.
Laminar Gas Focusing
Internal cannula delivers a central laminar air stream for tight droplet entrainment.
Low Flow Operation
Efficient at sub-milliliter/min flow rates with minimal overspray.
Versatile Material Compatibility
Works with solvents, colloids, drug coatings, and nanoparticle suspensions (<10 cP).
Key Advantages
- Medical device coating: stent, catheter, and balloon coatings with pinpoint precision
- Microelectronics manufacturing: solder flux, dielectric inks, and photoresists
- Nanomaterials and colloids: nanoparticle suspensions and colloidal depositions
- Diagnostic microfluidics: aerosol injection into lateral flow devices and biosensor interfaces