We report on measurements of Seebeck effect in single-crystal VO2 microbeams across their metal-insulator phase transition. One-dimensionally aligned metal-insulator domain walls were reversibly created and eliminated along single VO2 beams by varying temperature, which allows for accurate extraction of the net contribution to the Seebeck effect from these domain walls. We observed significantl...

The mechanical behavior of a ceramic coating and the evolution of this behavior in-service play crucial roles in governing the performance and lifetime of these materials. A protocol is presented that allows for characterization of the in-plane elastic modulus and strain to failure of fragile ceramic coatings. The protocol employs digital image correlation (DIC) to measure time-resolved, full-f...

A proposed computational method is applied to damp out the excess vibrations in smart microbeams, where the control action is implemented using piezoceramic actuators. From a mathematical point of view, we wish to determine the optimal boundary actuators that minimize a given energy-based performance measure. The minimization of the performance measure over the actuators is subjected to the ful...

We report on the current status of ion beam laboratory Centre Micro-Analysis Materials at Autonomous University Madrid. The 5 MV accelerator facility provides MeV beams any stable element. Six main lines are under operation, allowing analysis and modification materials through methods. Although most demanded ions H He for standard Rutherford backscattering spectrometry particle-induced X-ray em...

Finite elemen model for the structural behaviours of bi-directional (2D) FG porous microbeams based on a quasi-3D theory and modified strain gradient (MSGT) is presented. As main novelty this study, in order to capture accurately size effects, MSGT employed with three material length scale parameters (MLSPs) rather than modifed couple stress (MCST) only one MLSP. The properties including MLSPs ...

In this study, the effects of laser light on heat transfer a thin beam heated by an applied current and voltage are investigated. Laser heating pulses simulated as endogenous sources with discrete temporal properties. The conduction equation is developed using energy conservation modified Moore–Gibson–Thompson (MGT) flow vector. Thermal structural analysis Euler–Bernoulli microbeams provided su...

Abnormal grain growth can occur in polycrystalline materials with only a fraction of grains growing drastically to consume other grains. Here we report abnormal ultrafine grained metal rarely explored high-cycle loading regime at ambient temperature. is observed electroplated Ni microbeams average initial sizes less than 640 nm under large number cycles (up 109) low strain amplitudes (< 0.3%). ...

Abstract In this study, the static bending behaviour of a size-dependent thick beam is considered including FGM (Functionally Graded Materials) effects. The presented theory further development and extension space-fractional (non-local) Euler–Bernoulli model (s-FEBB) to Timoshenko (s-FTB) one by proper taking into account shear deformation. Furthermore, detailed parametric study on influence le...