A5075004028- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Ferroelectric and Piezoelectric Materials
- Catalytic Processes in Materials Science
- Microwave Dielectric Ceramics Synthesis
- Advanced Photocatalysis Techniques
- Advanced biosensing and bioanalysis techniques
- Metal and Thin Film Mechanics
- Microfluidic and Capillary Electrophoresis Applications
- Acoustic Wave Resonator Technologies
- Ionic liquids properties and applications
- Advanced ceramic materials synthesis
- Gas Sensing Nanomaterials and Sensors
- Advanced Condensed Matter Physics
- Catalysis and Oxidation Reactions
- Nuclear materials and radiation effects
- Advanced materials and composites
- Magnetic and transport properties of perovskites and related materials
- Biosensors and Analytical Detection
Weizmann Institute of Science
2011-2020
Hebrew University of Jerusalem
2010
Au nanoparticles (NPs) functionalized with thioaniline and cysteine are used to assemble bis-aniline-bridged Au-NP composites on surfaces using an electropolymerization process. During the polymerization of NPs in presence different amino acids, for example, L-glutamic acid, L-aspartic L-histidine, L-phenylalanine, zwitterionic interactions between acids units linked particles lead formation molecularly imprinted sites electropolymerized composites. Following elimination template acid...
Classical electrostriction, describing a second‐order electromechanical response of insulating solids, scales with elastic compliance, S, and inversely dielectric susceptibility, ε . This behavior, first noted 20 years ago by Robert Newnham, is shown to apply wide range electrostrictors including polymers, glasses, crystalline linear dielectrics, relaxor ferroelectrics. Electrostriction in fluorite ceramics (Y, Nb)‐stabilized δ ‐Bi 2 O 3 examined 16%–23% vacant oxygen sites. Given the values...
Electromechanically active ceramic materials, piezoelectrics and electrostrictors, provide the backbone of a variety consumer technologies. Gd- Sm-doped ceria are ion conducting ceramics, finding application in fuel cells, oxygen sensors, and, potentially, as memristor materials. While optimal design ceria-based devices requires thorough understanding their mechanical electromechanical properties, reports systematic study effect dopant concentration on behavior ceramics lacking. Here we...
Highly sensitive laser interferometer was built to measure electromechanical coupling in Gd-doped ceria Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>2-x</sub> thin films the frequency range up 20 kHz. Spurious resonances due substrate bending were avoided by special mounting of film center substrate. Compact design allowed reach high vertical resolution about 0.2 pm. Electrostriction coefficient measured 1 µm thick 4.3×10<sup>-21...
Abstract We report on a rapid sintering protocol, which optimizes the preparation of 0‐29 mol% Gd‐doped ceria ceramics with density ≥98% theoretical crystal lattice value. The starting material is nanometer grain‐sized powder prepared by carbonate co‐precipitation and calcined minimal agglomeration loss surface area. Slow (5°C/min) heating green‐body from 500°C to optimum temperature ( , dwell time <1 minute) followed 20°C/min cooling 1150°C 6 minutes time, produces maximum pellet...
In Lu-doped CeO<sub>2</sub> ceramics, the temperature independent magnetic susceptibility, usually attributed to Van Vleck-type magnetization, decreases linearly with Lu content.
Abstract The dissolution enthalpy , Δ H DS and the formation enthalpy, f,ox of bulk lutetium‐doped cerium oxide (LuDC) were studied at 701°C in molten sodium molybdate. For composition range Ce 1− X Lu O 2− /2 0 ≤ 0.3, decreases linearly smoothly with lutetium content according to kJ/mol = 73.5(1.0)−165.1(5.5)· x ). formation, becomes more exothermic content. No anomaly is observed low 2 3 concentration as reported previously for several other rare‐earth‐doped ceria systems, suggesting...