Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Ahmad Safari"'
Autor:
Ruimin Chen, Masato Yamazaki, Ahmad Safari, Takayuki Matsuoka, K. Kirk Shung, Jianguo Zhu, Qifa Zhou, Teng Ma, Gengxi Lu, Tian-Fu Zhang, Laiming Jiang, Xuejun Qian
Publikováno v:
IEEE Transactions on Biomedical Engineering. 66:1580-1587
High-frequency ultrasonic imaging with improved spatial resolution has gained increasing attention in the field of biomedical imaging. Sensitivity of transducers plays a pivotal role in determining ultrasonic image quality. Conventional ultrasonic tr
Publikováno v:
Sensors and Actuators A: Physical. 285:348-354
A novel bridge transducer based on the cymbal design has been developed for energy harvesting from impact loading by vehicle-induced deformations on pavement. The bridge transducer consists of a 2 mm thick 32 × 32 mm square soft PZT ceramic and hard
Publikováno v:
Journal of Applied Physics. 128:064103
The effect of Mn and Fe dopants on the electromechanical and electrochemical properties of 0.88[Bi0.5Na0.5]TiO3–0.08[Bi0.5K0.5]TiO3–0.04[Bi0.5Li0.5]TiO3 piezoceramic is investigated with particular emphasis on complex impedance in the temperature
Publikováno v:
Journal of the American Ceramic Society. 97:3192-3196
Electromechanical properties and high power characteristics of Pb-free hard piezoelectric ceramics in the (BiNa0.88K0.08Li0.04)0.5 (Ti1−xMnx)O3 (x = 0, 0.014, 0.015, and 0.016) system were studied. Mn doping resulted in a considerable enhancement o
Publikováno v:
2016 Joint IEEE International Symposium on the Applications of Ferroelectrics, European Conference on Application of Polar Dielectrics, and Piezoelectric Force Microscopy Workshop (ISAF/ECAPD/PFM).
A novel bridge transducer based on the cymbal design has been developed for energy harvesting from impact loading by vehicle-induced deformations in pavement. The bridge transducer consists of a 2 mm thick 32×32 mm square soft PZT ceramic and harden
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 59:1840-1847
This paper discusses the fabrication and characterization of a single-element ultrasonic transducer with a lead-free piezoelectric active element. A piezoelectric ceramic with composition of 0.88Bi(0.5)Na(0.5)TiO(3)-0.08Bi(0.5)K(0.5)TiO(3)- 0.04Bi(0.
Publikováno v:
Ferroelectrics. 388:17-22
The direct-writing technique by MicroPen provides maskless fabrication method for complex and multilayer structures. In this work, low-temperature co-firing ceramic (LTCC) BST paste was fabricated and structures for high frequency evaluation were for
Publikováno v:
Journal of the European Ceramic Society. 29:2325-2332
The effect of Cu 2+ addition (0.5–2 mol%) on microstructure and electromechanical properties of lead-free piezoelectric system of (K 0.44 Na 0.52 Li 0.04 )(Ta 0.1 Sb 0.06 Nb 0.84 )O 3 (KNN-LT-LS) was investigated through two processing methods; nam
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 56:368-378
This paper presents the fabrication and characterization of single-element ultrasonic transducers whose active elements are made of lead-free piezoceramic, 1-3 PZT/polymer composite and PVDF film. The lead free piezoelectric KNNLT- LS(K(0.44)Na(0.52)
Autor:
Stephen C. Danforth, Philip J. Whalen, Amit Bandyopadhyay, S. Iyer, R. B. Clancy, C. Gasdaska, Ahmad Safari, Noshir A. Langrana, J. Mcintosh
Publikováno v:
International Journal of Applied Ceramic Technology. 5:127-137
We present processing (green and sintered), part shrinkage and warping, microstructural characterization, and mechanical properties of Si 3 N 4 made by fused deposition of ceramics (FDC), using optical microscopy, scanning electron microscopy, and X-