A beam entrance view of the laser injector (Photo: Jack Yoh/Seoul National University)
From left to right: jet pressure first creates a hole in gel used to simulate human skin, followed by the lower-pressure delivery of medication (Image: Optics Letters)
A time-lapse image showing a microjet fired through the air from the laser-based injection system, traveling at a velocity of 30 meters (98.5 feet) per second (Image: Optics Letters)
Nobody likes getting their shots, but whether childhood immunization, annual flu vaccination, or whatever else, we're required to undergo the uncomfortable sensation of needle piercing skin multiple times throughout our lives. However, a new laser-based system promises to take the “ouch” out of injections by delivering shots as painlessly as being struck by a puff of air.
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