In this work, we present a modified two-mode phase-field crystal (PFC) model for nano-structural evolution of materials. The model is used to study both the face-centered cubic (FCC) and body-centered cubic (BCC) orderings, as well as the solid–liquid coexisting phenomenon. This two-mode PFC model incorporates three parameters in its formulation and damps out the dynamics of the system, except near the first two critical wavelengths.

The Laboratory for Fluid-Structure Interaction (LIFE) http://www.etseq.urv.es/life) of the Department of Mechanical Engineering at the Universitat Rovira i Virgili (URV) (www.urv.cat) in Tarragona (Spain), is looking for an enthusiastic research student with a strong interest in fluid dynamics. Successful candidates will join a small but very active multidisciplinary team, working in fluid-structure interaction problems.

The Institute for General Material Properties of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) is seeking an outstanding PhD candidate to participate in a research-training group on in-situ microscopy on nanoscale objects.

Applications are invited for a Postdoctoral Fellow in the Department of Mechanical Engineering at Northwestern University. The candidate will interact closely with personnel at the start-up company iNfinitesimal, LLC and collaborators at the Northwestern University Feinberg School of Medicine.  The position will involve research at the intersection of engineering and biology with an emphasis on development of nano and micro technologies for biological applications.

Desired Qualifications:

Applications are invited for a postdoctoral position within the Micro and Nano Mechanics Laboratory in the Department of Mechanical Engineering at Northwestern University.  The candidate will perform research in the area of nanomechanics of high-performance materials such as 2D materials, nanowires, and biomaterials. The candidate will be expected to contribute to a vibrant multidisciplinary research group and be able to work in close collaboration with chemists and theoreticians.

Requirements:

The paper presents a systematic study of dispersive waves in an elastic chiral lattice. Chirality is introduced through gyroscopes embedded into the junctions of a doubly periodic lattice. Bloch-Floquet waves are assumed to satisfy the quasi-periodicity conditions on the elementary cell.

The effects of the material structure on the pull-in instability of nano-actuated beams made of nanocrystalline silicon (Nc-Si) and subjected to a distributed electrostatic force are investigated. Nc-Si is represented as a multi-phase material composed of nano-sized grains, nano voids, and an amorphous-like interface to consider the effects of the interface, grain size, porosity, and the inhomogeneities surface energies on the elastic properties of the composite material.

IMATI-CNR and the Mathematics Department of the University of Pavia offer a postdoc position on isogeometric analysis. This research project focuses on the design and implementation of innovative isogeometric methods for solid/fluid mechanics.  In particular the target applications are related to

- nearly-incompressible and fibered materials

- fluids in geological formations

This research project is partially supported by the private sector, and is supervised by Annalisa Buffa (IMATI) and  Giancarlo Sangalli (University of Pavia).