Nano Lett., 2012, 12 (7), pp 3634–3639

Electromagnetic Torque Tweezers: A Versatile Approach for Measurement of Single-Molecule Twist and Torque Xander J. A. Janssen, Jan Lipfert, Tessa Jager, Renier Daudey, Jaap Beekman, and Nynke H. Dekker* Department of Bionanoscience, Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands