He directs the Molecular Systems Lab at Harvard. His research interests lie at the interface of information science, molecular engineering, and biology. The current focus is to engineer information directed self-assembly of nucleic acid (DNA/RNA) structures and devices, and to exploit such systems to do useful molecular work. Such de novo designed systems are composed of small synthetic DNA/RNA monomers capable of conditional configuration change and can be programmed to self-assemble, move, and compute. They can serve as programmable controllers for the spatial and temporal arrangements of diverse functional molecules (e.g. fluorophores, proteins), with a wide range of applications in nano-fabrication, imaging, sensing, diagnostics, and therapeutics. See his work at http://molecular-systems.net.