Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Larkhoon Hwang"'
Publikováno v:
Ferroelectrics Letters Section. 42:87-96
In this study, boost DC-DC converter was designed and manufactured in order to light Light Emitting Diode (abbreviated as LED) using piezoelectric energy harvesting device. Piezoelectric energy harvesting device was fabricated using PMW-PNN-PZT ceram
Publikováno v:
Ferroelectrics. 449:140-146
In this study, an acoustic emission (AE) sensor using lead free (Na,K)NbO3 system ceramics was fabricated. Also, the signal detection circuit and temperature stability properties of the AE sensor were presented and investigated, respectively. Signal
Publikováno v:
Ferroelectrics. 409:14-20
In this paper, ultrasonic nozzle and its driving circuit were manufactured. And then, their electrical properties were investigated. Ultrasonic nozzle using multilayer ring-type piezoelectric ceramics was fabricated by Pb[(Mn1/3Nb2/3)0.02(Ni1/3Nb2/3)
Publikováno v:
Integrated Ferroelectrics. 107:12-23
In this study, DC-DC converter using the thickness–vibration-mode piezoelectric transformer for driving high brightness LED was manufactured and its driving properties were investigated. LED output voltage of DC 4.11 V which can be feasibly turned
Publikováno v:
Integrated Ferroelectrics. 98:216-222
In this paper, ultrasonic nozzle and driving circuit were manufactured and their electrical properties were investigated. Ultrasonic nozzle was fabricated using Pb[(Sb1/2Nb1/2)0.035(Mn1/3Nb2/3)0.065(Zr0.49Ti0.51)0.90]O3+ 0.5wt%PbO (abbreviated as PSN
Publikováno v:
Journal of the Korean Institute of Electrical and Electronic Material Engineers. 20:953-958
In this paper, multilayer actuator structured-ultrasonic nozzle and resonant inverter driving circuit were manufactured, respectively. Its electrical properties were investigated. Multilayer actuator structured ultrasonic nozzle was fabricated using
Publikováno v:
Proceedings of ISAF-ECAPD-PFM 2012.
In this In this study, in order to develop low-temperature sintering ceramics for haptic piezoelectric actuator, Pb(Mg, W)O 3 -Pb(Ni, Nb)O 3 -Pb(Zr, Ti)O 3 (abbreviated as PMW-PNN-PZT) ceramics were fabricated using Li 2 CO 3 and CaCO 3 as sintering
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 58(9)
In this study, nonstoichiometric (Na(0.5)K(0.5))(0.97)(Nb(0.96)Sb(0.04))O(3) ceramics were fabricated and their dielectric and piezoelectric properties were investigated according to the CeO(2) addition. In this ceramic composition, CeO(2) addition i
Publikováno v:
2010 IEEE International Symposium on the Applications of Ferroelectrics (ISAF).
In this study, (K 0.5 Na 0.5 )−(Nb 0.94 Sb 0.04 )O 3 + 1.2mol% K 4 CuNb 8 O 23 + xmol%La 2 O 3 ceramics was prepared by conventional solid-state sintering method. The effect of La 2 O 3 on the crystal structure, dielectric and piezoelectric propert
Publikováno v:
2010 IEEE International Symposium on the Applications of Ferroelectrics (ISAF).
In this study, piezoelectric energy harvesting device using lead-free [(Na 0.5 K 0.5 )] 0.97 (Nb 0.96 Sb 0.04 )O 3 piezoelectric ceramics and rectifying circuit for energy harvesting were fabricated and their electrical characteristics were investiga