Acoustic detection of microbubble formation induced by enhanced optical breakdown of silver/dendrimer nanocomposites

Milas, Susanne M.; Ye, Jing Yong; Norris, Theodore B.; Balogh, Lajos P.; Baker, James R.; Hollman, Kyle W.; Emelianov, Stanislav; O’Donnell, Matthew
February 2003
Applied Physics Letters;2/10/2003, Vol. 82 Issue 6, p994
Academic Journal
We utilize a real-time acoustic technique, based on pulse-echo measurements to detect formation of microbubbles in an aqueous solution of a silver/dendrimer nanocomposite (DNC). Wave-field plots of successive recordings illustrate the generation and behavior of bubbles created by the optical breakdown process. A significant threshold reduction is achieved with DNC particles compared to its host dendrimer, enabling a diverse field of low-threshold breakdown applications.


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