https://phys.org/news/2018-07-x-ray-triggered-nano-bubbles-cancer.html

"The development and application of various nanomaterial designs for drug delivery is currently a key focus area in nanomedicine," says lead author of the research Dr. Wei Deng, Associate Investigator at the ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) and scientist at Macquarie University when the research was undertaken.

"Liposomes are already well established as an extremely effective drug-delivery system. Made out of similar material as cell membranes, these 'bubbles' are relatively simple to prepare, can be filled with appropriate medications and then injected into specific parts of the body. The issue however, is in controlling the timely release of the drug from the liposome," she says.