make this possible. They are currently developing blood-based lasers that could someday help doctor’s spot tumors in the human body.
When the team shined a laser into a small cavity full of dye-infused blood, they discovered that they could process the laser’s light according to their needs. In initially stages the experiment was with ICG which proves unimpressive; on its own, the dye’s light was weak at best. But as soon as the researchers mixed ICG into blood and exposed it to a conventional laser, they saw a good, bright light, created when molecules of dye bound themselves to plasma proteins. The blood had, in effect, become the second essential component of a laser.
Earlier researches also created bio-based lasers in collaboration with “living laser” Harvard researcher Seok-Hyun Yun, in 2013 Xudong Fang experimented with light in gelatin. Back in 2011, Harvard used proteins and kidney tissue for a laser.
Eventually, the researchers hope to get their blood lasers going in human bodies. They envision a world in which doctors could check for tumors simply by shining a laser over their patients’ skin.