Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Flexoelectricity"”.
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Investigation of flexoelectricity and ionic contamination in nematic liquid crystals
The work presented is a study of nematic liquid crystal physical properties. One of the phenomenon investigated is the bistability or in other words, the ability of the director of the material to rest in different orientations as function of the geometry of the sidewall. The main core of this …
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Size-dependent Electroelastic Properties of Piezoelectric Nanoplates
… present in nanostructures, surface effects and flexoelectricity are commonly believed to be responsible for the size-dependent electromechanical properties of piezoelectric nanomaterials. This thesis aims to develop modified continuum mechanics models with the consideration of the surface …
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Optical Characterisation of Strain and Defects in 2D Photonic Materials
… Touching on the advent of strain engineering for flexoelectricity - a spontaneous material polarization produced by a strain gradient that lifts the inversion symmetry, which can enable a bulk photogalvanic effect, we posit the aspect of meta-valent bonding in materials having a key role in this, …
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Investigation of van der Waals ferroelectric CuInP2S6 by scanning probe microscopy
… walls of stochiometric CIPS and found that flexoelectricity increases the stiffness of downward domains, while increasing electrostatic force leads to an apparent reduction of mechanical response. In copper-deficient CIPS, the CIPS phase is stiffer than the IPS phase, while phase boundaries …
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Investigating the role of curvature on the formation and thermal transformations of soot
In this work, the role of curved polycyclic aromatic hydrocarbons (cPAH) on the initial formation mechanism and thermal transformations of soot was explored. Experimental and computational techniques were used to probe the integration, presence and impact of internal pentagonal rings on the …
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Mesoscale Computational Analysis on the Reactivity of Heterogeneous Energetic Materials with Electromechanical Properties
Extensive research was performed in the past to investigate how energetic materials (EM) ignite via thermomechanical dissipation produced by viscoplastic deformation, friction, and fracture. Yet, little is known regarding the other types of excitation leading to ignition. Electromechanically …
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New modalities of strain-based engineering of ferroelectrics: domain structure and properties of PbZr1-xTixO3 thin films
Epitaxial strain has been widely used to modify the crystal and domain structure, and ultimately the dielectric, ferroelectric, and pyroelectric responses of ferroelectric thin-films for a wide variety of applications including memories, transducers, energy harvesters, sensors, and many more. …