99 research outputs found
Significant stiffness reduction at ferroelectric domain boundary evaluated by ultrasonic atomic force microscopy
Characterization of Aerosol Deposited Cesium Lead Tribromide Perovskite Films on Interdigited ITO Electrodes
Aerosol deposition (AD) is a promising additive manufacturing method to fabricate low-cost, scalable ļ¬lms at room temperature, but has not been considered for semiconductor processing, so far. The successful preparation of cesium lead tribromide (CsPbBr) perovskite ļ¬lms on interdigitated indium tin oxide (ITO) electrodes by means of AD is reported here. The ā Āµm thick layers are dense and have good adhesion to the substrate. The orthorhombic Pnma crystal structure of the precursor powder was retained during the deposition process with no signs of defect formation. The formation of electronic defects by photoluminescence spectroscopy is investigated and found slightly increased carrier recombination from defect sites for AD ļ¬lms compared to the powder. A nonuniform defect distribution across the layer, presumably induced by the impact of the semiconducting grains on the hard substrate surface, is revealed. The opto-electronic properties of AD processed semiconducting ļ¬lms is further tested by electrical measurements and conļ¬rmed good semiconducting properties and high responsivity for the ļ¬lms. These results demonstrate that AD processing of metal halide perovskites is possible for opto-electronic device manufacturing on D surfaces. It is believed that this work paves the way for the fabrication of previously unimaginable opto-electronic devices by additive manufacturing
Thrombocytogenesis by megakaryocyte; Interpretation by protoplatelet hypothesis
Serial transmission electron microscopy of human megakaryocytes (MKs) revealed their polyploidization and gradual maturation through consecutive transition in characteristics of various organelles and others. At the beginning of differentiation, MK with ploidy 32N, e.g., has 16 centrosomes in the cell center surrounded by 32N nucleus. Each bundle of microtubules (MTs) emanated from the respective centrosome supports and organizes 16 equally volumed cytoplasmic compartments which together compose one single 32N MK. During the differentiation, single centriole separated from the centriole pair, i.e., centrosome, migrates to the most periphery of the cell through MT bundle, corresponding to a half of the interphase array originated from one centrosome, supporting one āputative cytoplasmic compartmentā (PCC). Platelet demarcation membrane (DM) is constructed on the boundary surface between neighbouring PCCs. Matured PCC, composing of a tandem array of platelet territories covered by a sheet of DM is designated as protoplatelet. Eventually, the rupture of MK results in release of platelets from protoplatelets
Multilayer Construction with Various Ceramic Films for Electronic Devices Fabricated by Aerosol Deposition
Electro-optical properties of (Pb,La)(Zr,Ti)O3 films prepared by aerosol deposition method
Relationship Between Impact Velocity of Al2O3 Particles and Deposition Efficiency in Aerosol Deposition Method
Preparation and evaluation of microwave dielectric ceramic thick films by aerosol deposition process
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