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Abstract: The surface is a ubiquitous defect in crystals and others like dislocations are nearly so, at leas in metals. The effect of surface stress is accentuated in nanostructures and so can be the effect of the Poisson's ratio. Hollow metal nanoshells (MNS) are an interesting in that, there is interplay between the surface stress existing in the inner and outer surfaces; which can lead to an anomalous lattice expansion in very thin walled MNS. The proximity of interfaces gives prominence to image forces experienced by dislocations. The presence of surface stress alters the traction-free boundary conditions existing on free-surfaces and hence is expected to alter the magnitude of the image force. If the extra half-plane of the edge dislocation is parallel to the surface, the image force (glide) is not altered due to surface stress; however, the dislocation experiences a torque. The surface stress breaks the 'climb image force' symmetry, thus leading to non-equivalence between positive and negative climb. An equilibrium position exists for the edge dislocation in the positive 'climb geometry', arising due to a competition between the interaction of the dislocation stress fields with the surface stress and the image dislocation. Biosketch: Anandh Subramaniam did his B.Tech from IIT Madras, followed by a M.E and Ph.D from I.I.Sc., Bangalore. Then he was a scientist in CSIR followed by the position of a Guest Scientist at Max Planck Institute for Metals Research at Stuttgart (as a Max Planck Fellow and as an Alexander von Humboldt Fellow). After being a faculty in the department of Applied Mechanics at IIT Delhi he joined IIT Kanpur in the department of Materials Science and Engineering. Selected awards received by him include: The Shri Ram Arora International Award for Materials Science and Engineering Education (TMS, USA) and Young Research Award (IUMRS). His areas of interest are: Physical Materials Science, Nanomaterials, Quasicrystals, Amorphous Materials, Metastable Materials, Epitaxial Systems, Defects & Interfaces in Materials, Symmetry, Crystallography, Transmission Electron Microscopy, Finite Element Method. Using theory, computational theory, computer simulation and experiments hehas published papers on Metals, Semiconductors and Insulators (Ceramics). He has authored two video courses and an e-book ('Materials Science and Engineering'), which has a wide global circulation. He has two NPTEL video courses to his credit.