Abstract
This work presents a novel photothermal nanoblade that utilizes metallic nanostructures to light energy from short laser pulses to generate highly localized and shaped explosive cavitation bubbles which enables rapid cut of a lightly contacting cell membrane of a mammalian cell. Photothermal nanoblade can generate micrometer-sized membrane access ports for delivering large size cargo with high efficiency and high cell viability. Biologic and inanimate cargo over 3-orders of magnitude in size including DNA, RNA, 200 nm polystyrene beads, to 2 μm bacteria have also been successfully delivered into multiple mammalian cell types.
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