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PolyU Institutional Repository >
Browsing by Author "Kwok, Kin-wing"
Showing results 1 to 37 of 37
| Issue Date | Title | Author(s) | | 13-Mar-2007 | Depolarization of a piezoelectric film under an alternating current field | Kwok, Kin-wing; Cheung, M. K.; Chan, Helen L. W.; Choy, Chung-loong |
| 1-Aug-2009 | Dielectric and piezoelectric properties of K₀.₅ Na₀.₅ NbO₃-AgSbO₃lead-free ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 4-Oct-2007 | Dielectric and piezoelectric properties of (K[sub 0.5]Na[sub 0.5])NbO₃-Ba(Zr[sub 0.05]Ti[sub 0.95])O₃ lead-free ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 4-Jun-2007 | Double hysteresis loop in Cu-doped K[sub 0.5]Na[sub 0.5]NbO₃ lead-free piezoelectric ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 1998 | Effect of dielectric relaxation on the performance of P(VDF-TrFE) copolymer ultrasonic transducers | Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 1-Feb-2004 | Effects of niobium doping on the piezoelectric properties of sol-gel-derived lead-zirconate-titanate films | Kwok, Kin-wing; Tsang, Chin-wah Rodney; Chan, Helen L. W.; Choy, Chung-loong |
| 12-Mar-2007 | Energy harvesting with piezoelectric drum transducer | Wang, Sheng; Lam, Kwok-ho; Sun, Chengliang; Kwok, Kin-wing; Chan, Helen L. W.; Guo, Mingsen; Zhao, Xingzhong |
| 1994 | Enhancement of piezoelectric activity in P(VDF-TrFE) copolymer using two-step poling | Chan, Helen L. W.; Zhao, Z.; Kwok, Kin-wing; Choy, Chung-loong |
| Jul-1997 | Evaluation of the material parameters of piezoelectric materials by various methods | Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 10-Jan-2011 | Ferroelectric, piezoelectric, and leakage current properties of (K₀.₄₈Na₀.₄₈Li₀.₀₄)(Nb₀.₇₇₅Ta₀.₂₂₅)O₃ thin films grown by pulsed laser deposition | Wang, Dan-Yang; Lin, Dunmin; Kwok, Kin-wing; Chan, N. Y.; Dai, Jiyan; Li, S.; Chan, Helen L. W. |
| 2004 | General study on piezoelectric transformer | Kwok, K. F.; Dong, Ping; Cheng, K. W. Eric; Kwok, Kin-wing; Ho, Y. L.; Wang, X. X.; Chan, Helen L. W. |
| 23-May-2008 | Lead-free ceramics for pyroelectric applications | Lau, Sien Ting; Cheng, C. H.; Choy, Siu-hong; Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| Aug-2008 | Lead-free piezoelectric-metal-cavity (PMC) actuators | Lam, Kwok-ho; Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| May-1999 | Lead zirconate titanate/poly(vinylidene fluoride-trifluoroethylene) 1-3 composites for ultrasonic transducer applications | Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 2006 | Leakage field modeling of spiral winding transformer for contactless power converters | Cheng, K. W. Eric; Lu, Yan; Chan, K. W. Kevin; Kwok, Yi-lin; Kwok, Kin-wing; Kwok, K. F.; Xue, Xiangdang |
| 2009 | LED lighting development for intelligent clothing | Cheng, K. W. Eric; Kwok, Kin-wing; Kwok, Yi-lin; Chan, K. W. Kevin; Cheung, C. Norbert; Ho, Y. K.; Kwok, K. F. |
| 1-Sep-2002 | Longitudinal and transverse piezoelectric coefficients of lead zirconate titanate/vinylidene fluoride-trifluoroethylene composites with different polarization states | Zeng, R.; Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 26-Oct-2010 | Method and apparatus for measuring oscillation amplitude of an ultrasonic device | Chan, Helen L. W.; Lam, Tin-yan; Chao, Chen; Kwok, Kin-wing |
| 3-Aug-2007 | Microstructure, phase transition, and electrical properties of (K[sub 0.5]Na[sub 0.5])[sub 1-x]Li[sub x](Nb[sub 1-y]Ta[sub y])O₃ lead-free piezoelectric ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 2005 | Modeling and analysis of piezoelectric transformer using multi-mesh loop matrix circuit under square-wave excitation conditions | Cheng, K. W. Eric; Ho, Y. L.; Ho, Siu-lau; Kwok, Kin-wing; Wang, X. X.; Chan, Helen L. W.; Xue, Xiangdang |
| 24-Feb-2009 | Piezoelectric ceramic composition and the method for preparing the same | Wang, Xiaoxing; Kwok, Kin-wing; Chan, Helen L. W.; Choy, Siu-hong |
| Jul-2009 | Piezoelectric dispenser based on a piezoelectric-metal-cavity actuator | Lam, Kwok-ho; Sun, Chengliang; Kwok, Kin-wing; Chan, Helen L. W. |
| 2006 | Piezoelectric micromachined ultrasonic transducers based on P(VDF-TrFE) copolymer thin films | Chao, Chen; Lam, Tin-yan; Kwok, Kin-wing; Chan, Helen L. W. |
| 20-Mar-2008 | Piezoelectric properties and hardening behavior of K[sub 5.4]Cu[sub 1.3]Ta[sub 10]O[sub 29]-doped K[sub 0.5]Na[sub 0.5]NbO₃ ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 1995 | Piezoelectric properties of 1-3 composites of PZT in P(VDF-TrFE) copolymer | Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 6-Jun-2008 | Piezoresponse and ferroelectric properties of lead-free [Bi[sub 0.5](Na[sub 0.7]K[sub 0.2]Li[sub 0.1])[sub 0.5]]TiO₃ thin films by pulsed laser deposition | Wang, Danyang; Lin, Dunmin; Wong, K. S.; Kwok, Kin-wing; Dai, Jiyan; Chan, Helen L. W. |
| 1-Oct-1996 | Polarization of thick polyvinylidene fluoride/trifluoroethylene copolymer films | Chan, Helen L. W.; Zhao, Z.; Kwok, Kin-wing; Choy, Chung-loong; Alquié, C.; Boué, C.; Lewiner, J. |
| 15-Aug-2007 | A poling study of lead zirconate titanate/polyurethane 0–3 composites | Lau, Sien Ting; Kwok, Kin-wing; Shin, Franklin G.; Kopf, Sabine |
| 2001 | PT/P(VDF-TrFE) hydrophone array | Lau, Sien Ting; Kwok, Kin-wing; Chan, Helen L. W. |
| 1998 | PZT/P(VDF-TrFE) nanocomposite hydrophones for ultrasonic measurements | Chan, Helen L. W.; Lau, Sien Ting; Kwok, Kin-wing; Choy, Chung-loong |
| 1999 | PZT/P(VDF-TrFE) nanocomposites for ultrasonic hydrophone applications | Lau, Sien Ting; Zhou, Qifa; Kwok, Kin-wing; Chan, Helen L. W.; Choy, Chung-loong |
| 1996 | Resonance characteristics and polarization profile of partially poled P(VDF-TrFE) copolymer | Ploss, Bernd; Chan, Helen L. W.; Kwok, Kin-wing; Choy, Chung-loong |
| Jun-2010 | Self-focused acoustic ejectors for viscous liquids | Hon, S. F.; Kwok, Kin-wing; Li, H. L.; Ng, H. Y. |
| 1-Apr-2007 | Structure and electrical properties of K₀.₅Na₀.₅NbO₃-LiSbO₃lead-free piezoelectric ceramics | Lin, Dunmin; Kwok, Kin-wing; Lam, Kwok-ho; Chan, Helen L. W. |
| 11-Oct-2007 | Structure, dielectric, and piezoelectric properties of CuO-doped K[sub 0.5]Na[sub 0.5]NbO₃-BaTiO₃ lead-free ceramics | Lin, Dunmin; Kwok, Kin-wing; Chan, Helen L. W. |
| 2006 | Study of PMN-PT single crystals for resonator applications | Wong, H. T.; Kwok, Kin-wing; Chan, Helen L. W. |
| 7-Dec-2007 | A study on the disk-shaped piezoelectric transformer with multiple outputs | Guo, Mingsen; Lam, Kwok-ho; Wang, Sheng; Kwok, Kin-wing; Chan, Helen L. W.; Zhao, Xingzhong |
Showing results 1 to 37 of 37
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