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  1. No Access

    Article

    Controllable printing droplets on demand by piezoelectric inkjet: applications and methods

    Piezoelectric inkjet is a kind of device which can achieve drop-on-demand and has the advantages of high injection precision, fast response, and good stability. Nowadays, the piezoelectric inkjet technology ha...

    Kai Li, Jun-kao Liu, Wei-shan Chen, Lu Zhang in Microsystem Technologies (2018)

  2. No Access

    Article

    Effects of pulse voltage on piezoelectric micro-jet for lubrication

    A novel piezoelectric micro-jet for bearing lubrication is presented in this paper, and the micro-jet is working at the slap** mode. The micro-jet is embedded in the bearing system, and add little mass or vo...

    Kai Li, Jun-kao Liu, Wei-shan Chen, Lu Zhang in Microsystem Technologies (2017)

  3. No Access

    Article

    Research on the Injection Performance of a Novel Lubricating Device Based on Piezoelectric Micro-Jet Technology

    In order to solve the problem of lubrication failure in bearing systems, a novel lubricating device which can achieve drop-on-demand lubrication is proposed based on piezoelectric micro-jet technology. The inj...

    Kai Li, Jun-kao Liu, Wei-shan Chen, Le Ye, Lu Zhang in Journal of Electronic Materials (2016)

  4. No Access

    Article

    A rotary ultrasonic motor using radial bending mode of ring with nested PZT excitation

    This study presents and verifies a new idea for constructing a rotary traveling wave ultrasonic motor (USM) that uses the radial bending mode of a ring. In the new design, 20 trapezoid cross section slots are ...

    Ying-xiang Liu, Jun-kao Liu, Wei-shan Chen… in Journal of Zhejiang University SCIENCE A (2012)

  5. No Access

    Article

    Numerical Simulation of Batoid Locomotion

    The hydrodynamics of batoid swimming motions is investigated using the three-dimensional simulation of a self-propelled body in still water. The kinematics of batoid swimming is characterized by large amplitud...

    Wei-shan Chen, Zhi-jun Wu, Jun-kao Liu, Sheng-jun Shi… in Journal of Hydrodynamics (2011)

  6. No Access

    Article

    Research on the Swing of the Body of Two-Joint Robot Fish

    The disadvantages caused by the swing of a fish body were analyzed. The coordinate system of a two-joint robot fish was built. The hydrodynamic analysis of robot fish was developed. The dynamic simulation of a...

    Ying-xiang Liu, Wei-shan Chen, Jun-kao Liu in Journal of Bionic Engineering (2008)

  7. No Access

    Article

    Novel high torque bearingless two-sided rotary ultrasonic motor

    Applications are limited at present because the currently available ultrasonic motors (USMs) do not provide sufficiently high torque and power. The conventional travelling-wave USM needs the bearing to support...

    **a Li, Wei-shan Chen, Tao **e, Jun-kao Liu in Journal of Zhejiang University-SCIENCE A (2007)