Passing high intensity ultrasound in a liquid medium leads to the generation of a field or cloud of bubbles. The presence of dissolved gas nuclei or adventitious microbubbles inherently in the liquid medium is the reason behind the generation of bubble clouds under the influence of an oscillating pressure field caused by the ultrasound. These bubbles grow to a critical size and collapse violently leading to chemical reactions within the bubbles, at the bubble/solution interface and in the bulk solution, which is commonly referred to as sonochemistry.

The following sonochemistry research projects are currently in progress in our laboratory.

Sonoluminescence refers to the light emission observed during the ultrasound-driven collapse of microbubbles . The presence of bubble clouds or multiple bubbles means that there is a group of bubbles or a steady-state bubble population that undergo collapse within an acoustic cycle leading to SL. The SL that is emitted from a multibubble field is referred to as MBSL. Under specific experimental conditions, it is possible to avoid the formation of a bubble field and acoustically levitate a stable, single bubble in a liquid. In this case, the bubble grows and collapses within one acoustic cycle. SL emission occurs in every acoustic cycle, which is referred to as SBSL.

The following sonoluminescence research projects are currently in progress in our laboratory.

The effects of surface active solutes on MBSL and SBSL (ARC-DP)