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Synthesis of compositionally graded versions of PbZr1‐xTixO3 thin films results in unprecedented strains (as large as ≈4.5 × 105 m−1) and correspondingly unexpected crystal structures, ferroelectric domain structures, and properties. This includes the observation of built‐in electric fields in films as large as 200 kV/cm. Compositional and strain gradients could represent a new direction of strain‐control...
In situ Transmission Electron Microscopy (TEM) techniques can potentially fill in gaps in the current understanding interfacial phenomena in complex oxides. Select multiferroic oxide materials, such as BiFeO 3 (BFO), exhibit ferroelectric and magnetic order, and the two order parameters are coupled through a quantum–mechanical exchange interaction. The magneto-electric coupling in BFO allows...
Illustration of a new high‐temperature hard‐mask process based on traditional lithography and selective wet‐etching of MgO. The hard mask is compatible with standard nano‐lithography techniques and heat treatments in excess of 1000 °C. Here, this technique is applied to produce temperature‐stable contacts that give rise to low leakage, improved fatigue properties, and excellent high‐temperature stability...
As medical images are mostly fuzzy in nature, segmenting regions based intensity is the most challenging task. Segmentation of medical images using seeded region growing technique is increasingly becoming a popular method because of its ability to involve high-level knowledge of anatomical structures in seed selection process. In this paper, we have made improvements in region growing image segmentation...
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