Search Results - "Liu, P.C.K."

Study of 1-3 composite transducer for ultrasonic wirebonding application by Chong, C.P., Li, H.L., Chan, H.L.W., Liu, P.C.K.

“…Lead zirconate titanate (PZT)/epoxy 1-3 composites consisted of PZT rods embedded in an epoxy matrix were used as the driving elements in an ultrasonic…”
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TiO2-nonstoichiometry dependence on piezoelectric properties and depolarization temperature of (Bi0.5Na0.5)0.94Ba0.06TiO3 lead-free ceramics by WANG, X. X, OR, S. W, TANG, X. G, CHAN, H. L. W, CHOY, P. K, LIU, P. C. K

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Bismuth sodium titanate based lead-free ultrasonic transducer for microelectronics wirebonding applications by Chan, H.L.W., Choy, S.H., Chong, C.P., Li, H.L., Liu, P.C.K.

“…Bismuth sodium titanate based lead-free piezoelectric ceramic 0.885(Bi 1/2Na 1/2)TiO 3–0.05(Bi 1/2K 1/2)TiO 3–0.015(Bi 1/2Li 1/2)TiO 3–0.05BaTiO 3 (BNKLBT-1.5)…”
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Effect of plasma treatment of Au-Ni-Cu bond pads on process windows of Au wire bonding by Yu Hin Chan, Jang-Kyo Kim, Deming Liu, Liu, P.C.K., Yiu-Ming Cheung, Ming Wai Ng

“…The wire bondability of Au-Ni-Cu bond pads with different Au plating schemes, including electrolytic and immersion plates, are evaluated after plasma…”
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0.90(Bi1/2Na1/2)TiO3-0.05(Bi1/2/2K1/2)TiO3-0.05BaTiO3 transducer for ultrasonic wirebonding applications by CHOY, S. H, WANG, X. X, CHONG, C. P, CHAN, H. L. W, LIU, P. C. K, CHOY, C. L

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TiO 2-nonstoichiometry dependence on piezoelectric properties and depolarization temperature of (Bi 0.5Na 0.5) 0.94Ba 0.06TiO 3 lead-free ceramics by Wang, X.X., Or, S.W., Tang, X.G., Chan, H.L.W., Choy, P.K., Liu, P.C.K.

“…(Bi 0.5Na 0.5) 0.94Ba 0.06Ti x O 1+2 x lead-free piezoceramics with x varying from 0.97 to 1.03 were fabricated and characterized in order to investigate the…”
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Study of 1-3 PZT fibre/epoxy composite force sensor by CHOY, S. H, CHAN, H. L. W, NG, M. W, LIU, P. C. K

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Nonlinear behavior of piezoceramics and piezocomposites under various ac fields by Chong, C.P., Chen, W.P., Chan, H.L.W., Liu, P.C.K.

“…A study is carried out to compare the nonlinear behavior of piezoceramics and piezocomposites. The complex material parameters including losses were determined…”
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Effect of electrode pattern on the outputs of piezosensors for wire bonding process control by Chiu, S.S., Chan, H.L.W., Or, S.W., Cheung, Y.M., Liu, P.C.K.

“…A polyvinylidene fluoride (PVDF) piezosensor was installed as an integral part of an ultrasonic wire-bonding transducer for measuring bonding parameters, such…”
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Resonances in 1-3 piezocomposite rings by CHONG, C. P, CHAN, H. L. W, CHAN, M. H, LIU, P. C. K

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Degradation in lead zirconate titanate piezoelectric ceramics by high power resonant driving by Chen, W.P., Chong, C.P., Chan, H.L.W., Liu, P.C.K.

“…Lead zirconate titanate (PZT) piezoelectric ceramics were driven in a resonant mode at various power levels. The stability of the PZT piezoelectric ceramics is…”
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Change of material parameters of lead zirconate titanate rings after applying non-uniform mechanical stress by Xu, C.H, Chan, H.L.W, Liu, P.C.K

“…Lead zirconate titanate rings were subjected to different mechanical stress applied by bolt clamping. The piezoelectric and elastic coefficients, the relative…”
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On the modeling of bursty traffic by Liu, P.C.K., Cheung, W.L., Li, K.C.

“…In the study of congestion control for asynchronous transfer mode types of transport, traffic characteristic of the sources is important parameters. The…”
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Characteristics of bonds produced by full ceramic and composite ultrasonic transducers by Xu, C.H, Chan, H.L.W, Ng, W.Y, Cheung, K.Y.M, Liu, P.C.K

“…Two types of ultrasonic transducers: full ceramics (lead zirconate titanate, PZT) and composite (PZT embedded in a polymer) transducers, were used for wire…”
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Effect of hybrid structure (1–3 composite and ceramic) on the performance of sandwich transducers by Chong, C.P., Chan, H.L.W., Ng, M.W., Liu, P.C.K.

“…By using 1–3 composite rings to replace the ceramic rings in a Langevin sandwich transducer, the non-axial and many other spurious resonances in the transducer…”
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Longitudinal strain response of a 0.9PMN–0.1PT multilayer actuator by Tang, K.W., Chan, H.L.W., Cheung, Y.M., Liu, P.C.K.

“…This work studies the strain response of lead magnesium niobate–lead titanate (0.9PMN–0.1PT) multilayer actuators for industrial automation applications. Since…”
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Initiation and propagation of cracks in piezoelectric ring under non-uniform mechanical loading by Xu, C.H., Hu, J.H., Chan, H.L.W., Liu, P.C.K.

“…Initiation and propagation of cracks in lead zirconate titanate (PZT) piezoelectric rings under a non-uniform mechanical loading were studied. The PZT ring was…”
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Analysis of the resonance modes of PZT/epoxy 1-3 composite rings by Chong, C.P., Chan, H.L.W., Chan, M.H., Liu, P.C.K.

“…PZT/epoxy 1-3 composite rings with PZT volume fractions /spl Phi/ ranging from 0.58 to 0.93 are fabricated. They have sufficiently small epoxy width (/spl…”
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A theoretical basis for post-fabrication tuning of electronic circuits by Liu, P.C.K., Chung, V.W.W.

“…In this paper, the fundamental concept of design tolerancing and tuning is presented. The necessary and sufficient conditions of tuning based on the concept of…”
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A circuit design methodology based on statistical tolerance optimization by Liu, P.C.K., Li, K.C.

“…A statistical circuit/system design method which combines the cost of component tolerance, cost of repair and cost of throw-away as the objective function for…”
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