Diagram of an activated spaser nanoparticle inside a cell. Laser light heats the spaser in the center of the nanoparticle, creating a bubble that leads to cell-damaging waves and energy. From Galanzha, E. I. et al. Spaser as a biological probe. Nat. Commun. 8, 15528 doi: 10.1038/ncomms15528 (2017).
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N. R. Gough, Spasers: Nanoparticles that Make Deadly Bubbles to Kill Cancer Cells. BioSerendipity (29 August 2017) https://www.bioserendipity.com/spasers-nanoparticles-that-make-deadly-bubbles-to-kill-cancer-cells/