— This paper presents a new technique for the monolithic heterogeneous integration of compound semiconductor devices with silicon integrated circuits, and establishes the theoretical foundation for a key element of the process, tailored magnetic attraction and retention. It is shown how a patterned thin film of hard magnetic material can be used to engineer the attraction between the film and n...

P. Hreha, S. Hloch, P. Monka, K. Monková, L. Knapčíková, Faculty of Manufacturing Technologies, with a seat in Prešov, Prešov, Slovak Republic P. Hlaváček, M. Zeleňák Intitute of Geonics Academy of Science v.v.i. Ostrava – Poruba, Czech Republic I. Samardžić, D. Kozak Josip Juraj Strossmayer University of Osijek, Mechanical Engineering Faculty in Slavonski Brod, Croatia The paper presents resea...

Wetting of chemically heterogeneous surfaces is modeled using a phase field theory. We focus on a chemically heterogeneous surface composed of squares of one component material embedded in another. Unlike previous studies where the component materials were characterized only by an equilibrium contact angle, in this paper each of the component materials is constitutively allowed to exhibit hyste...

Two-dimensional (2D) materials offer numerous advantages for electrochemical energy storage and conversion due to fast charge transfer kinetics, highly accessible surface area, and tunable electronic and optical properties. Stacking of 2D materials generates heterogeneous interfaces that can modify native chemical and physical material properties. Here, we demonstrate that local strain at a car...

The Boundary Element Method (BEM) is very rarely used for the simulation of problems in geomechanics even though it can mean a considerable improvement in user-friendliness, efficiency and accuracy compared to currently used domain based methods because only surfaces have to be discretized. The main reason why the BEM is not applied is because currently there are missing efficient and user-frie...

Current heterogeneous catalysts lack the fine steric and electronic tuning required for catalyzing the selective dimerization of ethylene to 1-butene, which remains one of the largest industrial processes still catalyzed by homogeneous catalysts. Here, we report that a metal-organic framework catalyzes ethylene dimerization with a combination of activity and selectivity for 1-butene that is pre...

We propose a new concept of the effective properties of composites with uncertain spatial arrangements of constitutive materials and within-material properties. Rather than replacing a heterogeneous property with a constant effective parameter, we seek to preserve the internal macro structure of a composite. This general concept is used to derive the effective conductivity of composite heteroge...

Adaptive e-learning materials can help teachers to educate heterogeneous student groups. This study provides empirical data about the way academic students differ in their learning when using adaptive elearning materials. Ninety-four students participated in the study. We determined characteristics in a heterogeneous student group by collecting demographic data and measuring motivation and prio...

We present a generative method for the creation of geometrically complex andmaterially heterogeneous objects. By combining generative design and additive manufacturing, we demonstrate a unique formfinding approach and method for multi-material 3D printing. The method offers a fast, automated and controllable way to explore an expressive set of symmetrical, complex and colored objects, which mak...

We study the dynamics of successive slip events at a frictional interface with finite-element simulations. Because of the viscous properties of the material, the stress concentrations created by the arrest of precursory slip are not erased by the propagation of the following rupture but reappear with the relaxation of the material. We show that the amplitude of the stress concentrations follows...