Finding a high-frequency ultrasonic generator suitable for spray pyrolysis, especially one operating at frequencies higher than 1 MHz, might be challenging. Most commercial ultrasonic nozzles or atomizers operate at lower frequencies, typically between 20 kHz and 120 kHz.
However, specialized companies and research institutions might be able to help. Here are a few potential leads:
Sono-Tek Corporation: Sono-Tek provides precision ultrasonic spraying and coating equipment, although they generally work with lower frequencies (