title: Strong Resistance to Bending Observed for Nanoparticle Membranes.
abstract: We demonstrate how gold nanoparticle monolayers can be curled up into hollow scrolls that make it possible to extract both bending and stretching moduli from indentation by atomic force microscopy. We find a bending modulus that is 2 orders of magnitude larger than predicted by standard continuum elasticity, an enhancement we associate with nonlocal microstructural constraints. This finding opens up new opportunities for independent control of resistance to bending and stretching at the nanoscale.
authors: Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States.|James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States.
authors: Yifan
authors: Y
authors: Wang
authors: James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States.|Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing, 100871, China.
authors: Jianhui
authors: J
authors: Liao
authors: James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States.
authors: Sean P
authors: SP
authors: McBride
authors: James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States.|Department of Physics of Complex Systems, Weizmann Institude of Science , Rehovot, 76100, Israel.
authors: Efi
authors: E
authors: Efrati
authors: Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.
authors: Xiao-Min
authors: XM
authors: Lin
authors: Department of Physics, University of Chicago , 5720 S. Ellis Avenue, Chicago, Illinois 60637, United States.|James Franck Institute, University of Chicago , 929 E. 57th Street, Chicago, Illinois 60637, United States.
authors: Heinrich M
authors: HM
authors: Jaeger
keywords: Nanoparticle; bending; bending modulus; indentation; membrane; persistence length