Improved High-Force Magnetic Tweezers for Stretching and Refolding of Proteins and Short DNA Chen, Hu ; Fu, Hongxia ; Zhu, Xiaoying ; Cong, Peiwen ; Nakamura, Fumihiko ; Yan, Jie Abstract Publication: Biophysical Journal Pub Date: January 2011 DOI: 10.1016/j.bpj.2010.12.3700 Bibcode: 2011BpJ...100..517C