Oxygenated Graphene Quantum Dots (GQDs) Synthesized Using Laser Ablation for Long-term Real-time Tracking and ImagingAshwin Kumar Narasimhan & Swathi Lakshmi B & Tuhin Subhra Santra & M. S. Ramachandra Rao & Ganapathy Krishnamurthi2017PDF1.6 MBEN