Designing ultrasound generator for induced crystallization

Johnson Irudayaraj , B. Kanickai Raj

Ultrasound imaging is a modern technique which relies on pezoelectric or qurtz crystal transducers. It converts mechanical waves to electrical signals and vice versa. The characteristics and properties of a crystal can be improved by the influence of ultrasound. We devised an ultrasonic generator which generates 12 or 15 MHz ultrasonic wave The heart of the Ultrasonic circuit is IC MAX 038 which is a wide band oscillator. The frequency is well stabilized by IC 3B. The output of MAX 038 is amplified by operational amplifier and is given to piezo crystal which is sufficient in level to drive the crystal. The micro controller 16f877A reads the frequency and displays on the LCD. Various types of crystal have been grown under the influence of ultrasound and without the ultrasound. It is interesting to note that Ultrasound has an important role to tailor the properties of crystals.

Mots clés: Induced crystal growth; Ultrasonic generator; micro controller; FTIR and UV analysis

Domaines: Acoustique [physics.class-ph]

Johnson Irudayaraj, B. Kanickai Raj. Designing ultrasound generator for induced crystallization. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810791⟩