Sonicators are devices that use high-frequency sound waves to disrupt and homogenize samples. They are mainly used in the laboratory for sample preparation, particularly for the extraction of proteins and other biomolecules. Sonicators work by generating sound waves of frequency higher than 20,000 Hz, which are transmitted through a liquid medium. These sound waves create pressure waves that result in cavitation, a phenomenon where bubbles are formed and then collapse, causing shear and shock waves that help to break down samples.

On the other hand, an ultrasonicator is a device that uses higher frequency sound waves, typically above 20kHz, to manipulate and process materials. Ultrasonicators are mainly used for cleaning, mixing, homogenizing, and extracting compounds from samples. Ultrasonicators work by generating ultrasound waves using a piezoelectric transducer, which creates high-frequency vibrations. When these vibrations are propagated through a liquid, they create a series of compression and rarefaction waves that result in cavitation, which breaks down the materials. Ultrasonication is commonly used in industries such as chemical, food, and pharmaceutical for applications such as the preparation of nanomaterials, emulsification, cell disruption, and cleaning equipment.