due to high surface-to-volume ratio of nanoscale structures, surface stress effects have a significant influence on their behavior. in this paper, a two-dimensional problem for an elastic layer that is bonded to a rigid substrate and subjected to an inclined concentrated line load acting on the surface of the layer is investigated based on gurtin-murdoch continuum model to consider surface stre...

J. Očenášek,1 H. Lu,2 C. W. Bark,3 C. B. Eom,3 J. Alcalá,4 G. Catalan,5,6 and A. Gruverman2 1New Technologies Research Centre, University of West Bohemia in Pilsen, 30614 Plzeň, Czech Republic 2Department of Physics and Astronomy, University of Nebraska-Lincoln, Nebraska 68588, USA 3Department of Materials Science and Engineering, University of Wisconsin-Madison, Wisconsin 53706, USA 4Departmen...

We have determined the mechanical anisotropy of a single microtubule by simultaneously measuring the Young's and the shear moduli in vitro. This was achieved by elastically deforming the microtubule deposited on a substrate tailored by electron-beam lithography with a tip of an atomic force microscope. The shear modulus is 2 orders of magnitude lower than the Young's, giving rise to a length-de...