Balaji Panchapakesan likes to leave innocuous packages lying around, then detonate them remotely, killing any victims who are near the blast. No, he’s not an Iraqi insurgent—he’s an engineering professor at the University of Delaware, and his bombs are carbon nanotubes. His explosions are on the nanoscale, and his victims are cancer cells. His idea that nanobombs can fight cancer in a cell-by-cell war of attrition has been effective in petri dishes.
At the heart of Panchapakesan’s nanobombs are single-walled carbon nanotubes. While these tiny structures have been heralded as the material of the future for their astounding strength, Panchapakesan is focused on one of their other strange features: When heated by a laser at an 800-nanometer wavelength, they explode.
