Shum Ho Cheung, Zhao Yuan-jin, Kim Shin-Hyun, Weitz David A
Department of Physics, Kavli Institute for Bionano Science and Technology, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
Angew Chem Int Ed Engl. 2011 Feb 11;50(7):1648-51. doi: 10.1002/anie.201006023. Epub 2011 Jan 7.