Results 61 to 70 of about 27,906 (302)

Grain size effect on piezoelectric properties of Sr2Nb2O7 ceramics [PDF]

Journal of Advanced Dielectrics, 2018
Grain size effect on piezoelectric properties and thermal stability of perovskite layer structured (PLS) Sr2Nb2O7 ceramics are investigated. The Sr2Nb2O7 ceramics with different average grain sizes from 1.2μm to 3.6μm were prepared in different sintering
Tao Chen, Zhiyong Zhou, Ruihong Liang, Xianlin Dong   +3 more
doaj   +1 more source

Ferroelectric and Incipient Ferroelectric Properties of a Novel Sr_(9-x)PbxCe2Ti2O36 (x=0-9) Ceramic System

, 2008
Sr_(9-x)PbxCe2Ti12O36 system is derived from the perovskite SrTiO3 and its chemical formula can be written as (Sr_(1-y)Pby)0.75Ce0.167TiO3. We investigated dielectric response of Sr_(9-x)PbxCe2Ti12O36 ceramics (x = 0-9) between 100 Hz and 100 THz at ...
Barrett J. H., Baumard J. F., Budimir M., Buixaderas E., Burianová L., Geyer R. G., Gurevich V. L., Hlinka J., Kamba S., Kamba S., Kuo Y. O., Last J. T., Mandal B. P., Moreira R. L., Müller K. A., Nomura S., Petzelt J., Petzelt J., Petzelt J., Rousseau D. L., Shannon R. D., Slater J. C., Smolenskii G. A., Subodh G., Tagantsev A. K., Tamura H., Ubic R., Wakino K., Zurmühlen R., Zurmühlen R.   +29 more
core   +1 more source

Topology‐Optimized Stretchable Piezoelectric Sensors With Tailored Liquid‐Metal Circuits for Anisotropic Stress‐Adaptive Motion Monitoring

Advanced Materials, EarlyView.
Schematic showing the leveraging of topology optimization, the printing of a tailored eutectic gallium‐indium liquid alloy electrode, and porous ceramic engineering to simultaneously enhance mechanical durability, stretchability, and sensing sensitivity to produce a highly deformable and stretchable sensor capable of monitoring complex and anisotropic ...
Hanmin Zeng, Qianqian Xu, Jianxun Zhang, Peiqiong Zhou, Jiachen Zhang, Jinlan Li, Senfeng Zhao, Kechao Zhou, Dou Zhang, Chris Bowen, Yan Zhang   +10 more
wiley   +1 more source

Piezoelectric Stimulation of Neural Cells: Exploring the Synergistic Potential of Hybrid Scaffolds for Enhanced Regeneration

Advanced Materials Interfaces, EarlyView.
Hybrid piezoelectric scaffolds offer a promising route for Central Nervous System regeneration by combining structural and electrical cues to support neural stem cell growth. This review highlights their potential to overcome current challenges in neural tissue engineering by exploring porous hybrid materials, their biological interactions, and ...
Heather F. Titterton, Chris R. Bowen, Hamideh Khanbareh   +2 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Infrared and THz studies of polar phonons and improper magnetodielectric effect in multiferroic BFO3 ceramics

, 2006
BFO3 ceramics were investigated by means of infrared reflectivity and time domain THz transmission spectroscopy at temperatures 20 - 950 K, and the magnetodielectric effect was studied at 10 - 300 K, with the magnetic field up to 9 T.
D. Nuzhnyy, D. Y. Smith, F. Gervais, J. Kreisel, J. Petzelt, J. Prokleška, J. Šebek, M. Savinov, N. N. Krainik, P. Nalbach, R. Haumont, S. Kamba, Yu. E. Roginskaya, Yu. F. Popov   +13 more
core   +1 more source

The polarization process of ferroelectric materials analyzed in the framework of variational inequalities

, 2020
We are concerned with the mathematical modeling of the polarization process in ferroelectric media. We assume that this dissipative process is governed by two constitutive functions, which are the free energy function and the dissipation function.
Humer, Alexander, Meindlhumer, Martin, Pechstein, Astrid S.   +2 more
core   +1 more source

Design and Fabrication of High Dielectric GRIN Lens for a Directive Antenna Using a Hybrid Filled Voxel Additive Manufacturing Technique

Advanced Materials Technologies, EarlyView.
Hybrid‐filled voxel AM enables integration of high‐permittivity materials into additively manufactured devices. Using this approach, a graded refractive index (GRIN) lens is demonstrated, achieving a 50% antenna size reduction with enhanced directivity.
Qianfang Zheng, Anna Radkovskaya, Kailun Xu, Ekaterina Shamonina, Patrick S. Grant   +4 more
wiley   +1 more source

Magnetic and dielectric properties of multiferroic Eu0.5Ba0.25Sr0.25TiO3 ceramics

, 2012
Dielectric and magnetic properties of Eu0.5Ba0.25Sr0.25TiO3 are investigated between 10 K and 300 K in the frequency range from 10 Hz to 100 THz.
Christelle Kadlec, Goian V, Jan Prokleška, Katsufuji T, Maxim Savinov, Nan C-W, Pendlebury JM, Přemysl Vaněk, Shushkov AO, Shvartsman VV, Stanislav Kamba, Veronica Goian   +11 more
core   +1 more source

Temperature‐Dependent Zinc Oxide Cathodoluminescence: Toward Compact Wavelength‐Tunable Solid‐State Photoionization Sources

Advanced Optical Materials, EarlyView.
A proof‐of‐concept of a thermally‐tunable cathodoluminescence‐based light source is demonstrated using a wide‐bandgap z‐cut ZnO crystal as anode, resulting in the ultraviolet (UV) emission peak shifting from 398 nm to ~409 nm (3.115‐3.032 eV). Our results establish the feasibility of a compact, field‐deployable UV source with potential for gas sensing ...
Rui M. R. Pinto, Aritz Retolaza, João Cunha, Pedro Matos, Júlio Silva, Diana Silva, Rosana Alves Dias, K. B. Vinayakumar   +7 more
wiley   +1 more source