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  1. Article

    Open Access

    The AKT1/NF-kappaB/Notch1/PTEN axis has an important role in chemoresistance of gastric cancer cells

    The inherent resistance of tumors to DNA damage often limits the efficacy of chemotherapy. The aim of this work is to explore the potential mechanism for development of chemoresistance in gastric cancer. Our d...

    W Zhou, X-Q Fu, L-L Zhang, J Zhang, X Huang, X-H Lu, L Shen… in Cell Death & Disease (2013)

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  2. No Access

    Article

    High-frequency PIN–PMN–PT single crystal ultrasonic transducer for imaging applications

    A high-frequency (∼60 MHz) ultrasonic transducer with a [001]-oriented 0.27Pb(In1/2Nb1/2)O3–0.45Pb(Mg1/3Nb2/3)O3–0.28PbTiO3 (PIN–PMN–PT) piezoelectric single crystal as an active element has been fabricated and c...

    Y. Chen, K. H. Lam, D. Zhou, W. F. Cheng, J. Y. Dai, H. S. Luo… in Applied Physics A (2012)

  3. No Access

    Article

    Magnetoelectric effect in laminates of polymer-based pseudo-1–3 (Tb0.3Dy0.7)0.5Pr0.5Fe1.55 composite and 0.3Pb(Mg1/3Nb2/3)O3–0.7PbTiO3 single crystal

    We report an extrinsic magnetoelectric effect in composite laminates made by sandwiching one thickness-polarized 0.7Pb(Mg1/3Nb2/3)O3–0.3PbTiO3 (PMN–PT) piezoelectric single crystal plate between two length-magnet...

    Y. J. Wang, C. M. Leung, S. W. Or, X. Y. Zhao, H. S. Luo, X. K. Lv… in Applied Physics A (2009)

  4. No Access

    Article

    PMN-PT single crystal thick films on silicon substrate for high-frequency micromachined ultrasonic transducers

    In this work, a novel high-frequency ultrasonic transducer structure is realized by using PMNPT-on-silicon technology and silicon micromachining. To prepare the single crystalline PMNPT-on-silicon wafers, a hy...

    J. Peng, S. T. Lau, C. Chao, J. Y. Dai, H. L. W. Chan, H. S. Luo… in Applied Physics A (2009)

  5. No Access

    Article

    Magnetoelectric effect from the direct coupling of the Lorentz force from a brass ring with transverse piezoelectricity in a lead zirconate titanate (PZT) disk

    A novel composite of brass ring and PZT disk shows a high dc magnetic field (Hdc) response when using the product effect of the Lorentz force effect from a metal ring in a dc magnetic field applied with ac electr...

    Y.M. Jia, D. Zhou, L.H. Luo, X.Y. Zhao, H.S. Luo, S.W. Or, H.L.W. Chan in Applied Physics A (2007)

  6. No Access

    Article

    Magnetoelectric effect in composites of magnet, metal-cap, and piezoceramic

    We report on the magnetoelectric (ME) effect in three-phase magnet-metal-cap-piezoceramic composites of a thickness-polarized Pb(Zr,Ti)O3 disk bonded between two truncated conical brass caps and two thickness-mag...

    Y.M. Jia, S.W. Or, K.H. Lam, H.L.W. Chan, Y.X. Tang, X.Y. Zhao… in Applied Physics A (2007)

  7. No Access

    Article

    A safe and efficient strategy for endoscopic resection of large, gastrointestinal lipoma

    Gastrointestinal (GI) lipomas are benign, slowly growing, submucosal tumors, which may cause gastrointestinal bleeding, anemia, intussusception, and bowel obstruction. The aim of this study is to explore the s...

    H.-G. Yu, Y.-M. Ding, S. Tan, H.-S. Luo, J.-P. Yu in Surgical Endoscopy (2007)

  8. No Access

    Chapter and Conference Paper

    In-Situ Observation of Electrically Induced Fatigue Crack Growth for Ferroelectric Single Crystals

    In-situ observation of electrically induced fatigue crack growth was carried out for ferroelectric single crystals under alternative electric field. Electrically-induced fatigue crack growth was observed both ...

    F. Fang, W. Yang, F. C Zhang, H. S. Luo in IUTAM Symposium on Mechanics and Reliabili… (2006)

  9. No Access

    Article

    Piezoelectric PMN-PT fibre hydrophone for ultrasonic transducer calibration

    A newly developed ceramic fibre hydrophone with an active element as small as 0.25 mm in diameter is described in this work. Lead magnesium niobate-lead titanate (PMN-PT) ceramic fibre with a nominal compositi...

    S.T. Lau, K.H. Lam, H.L.W. Chan, C.L. Choy, H.S. Luo, Q.R. Yin… in Applied Physics A (2005)