25th Annual Student Research Conference
Single Bubble Sonoluminescence
Chirag Ghimire
Dr. Mohammad Samiullah, Faculty Mentor
Sonoluminescence (SL) is the process of converting sound energy into light energy. An experiment was designed to observe SL in a single bubble. Bubbles were injected in a spherical shaped flask and ultrasound pressure waves were used to trap single bubbles near the center of the flask. An acoustic mode of the interior of the bubble was then excited by adjusting frequencies to a resonance frequency of the mode. A frequency between 20,790 Hz and 20,980 Hz with a width of 150 Hz was observed to lead to excitation of the modes. Increasing power into the modes was expected to lead to heating of the interior of the bubble which would cause the emission of light, but we did not observe any emission of light. Instead, the bubble became unstable and exited from the center of the flask.
Keywords: Sonoluminescence, Sound, Light, Bubble, Resonance, Ultrasound, acoustic mode, pressure
Topic(s):Physics
Presentation Type: Oral Paper
Session: 205-2
Location: MG 1096
Time: 9:45