While conducting her doctoral research, Green was a member of the team that developed a laboratory method to insert nanoparticles into cancer cells while avoiding surrounding healthy cells. The tissue incorporating the nanoparticles heats up due to directed laser radiation, which then destroys the cancer cells. She first tested her ideas with cancer cells in a petri dish, then moved on to small animal models using mice. Her current research efforts seek to extend this nanoparticle treatment to humans.