Description: There is a rapidly growing interest from the mechanics community in the emerging topics on nano- and biosystems. Mutiscale methods at continuum, mesoscopic, statistical and atomistic levels are being developed to model the behaviors and properties of systems including nanostructured materials, nanotubes, biological tissues, cells and biomolecules. At the same time, experimental testing and measurement techniques are rapidly advancing to reveal new mechanisms and phenomena in these complex systems. This symposium is aimed to bring together an international and interdisciplinary forum on emerging topics in mechanics of nano- and biosystems. Presentation topics include state-of-the-art modeling, computational and experimental techniques with applications to the studies of size effects, elasticity, viscoelasticity, strength, fracture, surfaces, interfaces, grain boundaries, flaw tolerance, hierarchical structures, contact, adhesion.