Prof. Hejun Du Profile

Prof. Hejun Du

at Nanyang Technological Univ

SPIE Involvement:

Author

Publications (22)

Proceedings Article | 1 March 2018 Paper

Influence of annealing to the defect of inkjet-printed ZnO thin film

Van-Thai Tran, Yuefan Wei, Zhaoyao Zhan, Hejun Du

Proceedings Volume 10533, 105331I (2018) https://doi.org/10.1117/12.2286856

KEYWORDS: Zinc oxide, Annealing, Printing, Thin films, Oxygen, Ultraviolet radiation, Inkjet technology, Heat treatments, Electrodes, Photodetectors

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Proceedings Article | 1 July 2005 Paper

TiNi shape memory alloy based micropumps

Y. Q. Fu, J. K. Luo, M. Hu, H. J. Du, A. Flewitt, W. Milne

Proceedings Volume 5836, (2005) https://doi.org/10.1117/12.608506

KEYWORDS: Silicon, Shape memory alloys, Microelectromechanical systems, Etching, Thin films, Silicon films, Actuators, Semiconducting wafers, Composites, Microfluidics

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Proceedings Article | 12 April 2005 Paper

Fabrication and characterization of piezoelectric cantilever for micro transducers

Jin Xie, Min Hu, Shih-Fu Ling, Hejun Du

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621532

KEYWORDS: Ferroelectric materials, Sol-gels, Thin films, Thin film deposition, Electrodes, Platinum, Diffusion, Deposition processes, Crystals, Polarization

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Proceedings Article | 12 April 2005 Paper

Dynamic testing of micro devices using PZT base excitation

Min Hu, Jin Xie, Shih-Fu Ling, Hejun Du, Yongqing Fu

Proceedings Volume 5852, (2005) https://doi.org/10.1117/12.621754

KEYWORDS: Ferroelectric materials, Ceramics, Thin films, Radon, Doppler effect, Laser Doppler velocimetry, Deep reactive ion etching, Thin film deposition, Microsystems, Beam shaping

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Proceedings Article | 28 February 2005 Paper

Micromirror structure based on TiNi shape memory thin films

Yong Qing Fu, Min Hu, Hejun Du, Jack Luo, Andrew Flewitt, William Milne

Proceedings Volume 5649, (2005) https://doi.org/10.1117/12.567317

KEYWORDS: Micromirrors, Silicon, Electrodes, Mirrors, Etching, Thin films, Microelectromechanical systems, Temperature metrology, Semiconducting wafers, Beam shaping

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Proceedings Article | 23 February 2005 Paper

Fabrication of PZT microdevices using a high-yield sol-gel process

Min Hu, Hejun Du, Jin Xie, Shih-Fu Ling, Yongqing Fu

Proceedings Volume 5650, (2005) https://doi.org/10.1117/12.581395

KEYWORDS: Ferroelectric materials, Thin films, Sol-gels, Electrodes, Platinum, Thin film devices, Etching, Silicon, Wet etching, Silicon films

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Proceedings Article | 16 February 2004 Paper

Biopsy applications of Ti50Ni41Cu9 shape memory films for wireless capsule endoscope

Hejun Du, Yongqing Fu, S. Zhang, Jack Luo, Andrew Flewitt, William Milne

Proceedings Volume 5648, (2004) https://doi.org/10.1117/12.568176

KEYWORDS: Copper, Nickel, Thin films, Shape memory alloys, Biopsy, Resistance, Silicon, Electrodes, Temperature metrology, Endoscopes

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Proceedings Article | 18 November 2003 Paper

CO2 laser annealing with NiTi thin films deposited by sputtering

Q. He, Weiming Huang, Minhui Hong, Tow Chong Chong, Yongqi Fu, Hejun Du

Proceedings Volume 5063, (2003) https://doi.org/10.1117/12.540464

KEYWORDS: Thin films, Annealing, Carbon dioxide lasers, Sputter deposition, Thin film deposition, Radium, Surface roughness, Optical microscopes, Atomic force microscope, Crystals

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Proceedings Article | 24 April 2003 Paper

Fabrication of micromachined TiNi-based microgripper with compliant structure

Yongqing Fu, Hejun Du

Proceedings Volume 5116, (2003) https://doi.org/10.1117/12.498184

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Proceedings Article | 14 November 2002 Paper

Haptic interfacing system using magnetorheological fluids

Weihua Li, Hejun Du, Lit Ding, N. Q. Guo

Proceedings Volume 4935, (2002) https://doi.org/10.1117/12.469066

KEYWORDS: Actuators, Haptic technology, Feedback control, Magnetism, Control systems, Computing systems, Human-machine interfaces, Visualization, Prototyping, Transistors

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Proceedings Article | 14 November 2002 Paper

Improved design of piezoelectric microactuators for HDD

Gih Keong Lau, Hejun Du

Proceedings Volume 4935, (2002) https://doi.org/10.1117/12.469408

KEYWORDS: Ceramics, Actuators, Manufacturing, Chemical elements, Microactuators, Finite element methods, Epoxies, Servomechanisms, Tolerancing, Mechanics

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Proceedings Article | 13 November 2002 Paper

Magnetron-sputtered TiNiCu shape memory alloy thin films with different Cu contents

Yongqing Fu, Hejun Du

Proceedings Volume 4934, (2002) https://doi.org/10.1117/12.468645

KEYWORDS: Copper, Temperature metrology, Shape memory alloys, Thin films, Sputter deposition, Nickel, Silicon, Semiconducting wafers, Crystals, Microactuators

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Proceedings Article | 12 September 2002 Paper

Fabrication of NiTi shape-memory alloy microdevices using laser

WeiMin Huang, Q. He, M. Hong, Q. Xie, Yongqing Fu, Hejun Du

Proceedings Volume 4915, (2002) https://doi.org/10.1117/12.482892

KEYWORDS: Laser cutting, Thin films, Annealing, Shape memory alloys, Silicon, Excimer lasers, Silicon films, Femtosecond phenomena, Semiconductor lasers, Fabrication

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Proceedings Article | 15 October 2001 Paper

Characterization and MEMS application of sputtered TiNi shape memory alloy thin films

Hejun Du, Yongqing Fu

Proceedings Volume 4601, (2001) https://doi.org/10.1117/12.444686

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Proceedings Article | 28 September 2001 Paper

Patterning of diamond microstructures by bulk and surface micromachining for MEMS devices

Yongqing Fu, Hejun Du

Proceedings Volume 4557, (2001) https://doi.org/10.1117/12.442941

KEYWORDS: Diamond, Platinum, Silicon, Diamond patterning, Silicon films, Microelectromechanical systems, Silica, Aluminum, Etching, Crystals

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Proceedings Article | 11 July 2001 Paper

RF magnetron sputtered crystalline TiNiCu shape memory alloy thin film

Yongqing Fu, Xu Huang, Hejun Du, Yong Liu

Proceedings Volume 4333, (2001) https://doi.org/10.1117/12.432758

KEYWORDS: Copper, Thin films, Shape memory alloys, Crystals, Argon, Sputter deposition, X-ray diffraction, Nickel, Silicon, Semiconducting wafers

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Proceedings Article | 2 July 2001 Paper

Viscoelastic properties of MR fluids under oscillatory shear

Weihua Li, Hejun Du, G. Chen, Song Yeo

Proceedings Volume 4331, (2001) https://doi.org/10.1117/12.432732

KEYWORDS: Fluid dynamics, Magnetism, Particles, Microfluidics, Chromium, Temperature metrology, Optical character recognition, Lithium, Solids, Phase measurement

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Proceedings Article | 21 March 2001 Paper

Motion control of an electrostrictive actuator

Min Hu, Hejun Du, Shih-Fu Ling

Proceedings Volume 4235, (2001) https://doi.org/10.1117/12.420873

KEYWORDS: Actuators, Detection and tracking algorithms, Control systems, Motion controllers, Signal processing, Complex systems, Sensors, Ceramics, Motion models, Electrostriction

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Proceedings Article | 20 October 2000 Paper

Patterning of diamond microstructures on Si substrate by bulk and surface micromachining

Yongqing Fu, Hejun Du, Jianmin Miao, Yanju Liu

Proceedings Volume 4230, (2000) https://doi.org/10.1117/12.404899

KEYWORDS: Diamond, Silicon, Platinum, Diamond patterning, Silicon films, Aluminum, Etching, Photomasks, Surface micromachining, Plasma etching

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Proceedings Article | 20 October 2000 Paper

Preparation of crystalline TiNi shape-memory alloy thin film for MEMS applications

Yongqing Fu, Hejun Du, Weiming Huang, Xu Huang, Jianmin Miao, Yong Liu

Proceedings Volume 4230, (2000) https://doi.org/10.1117/12.404895

KEYWORDS: Crystals, Microelectromechanical systems, Thin films, Sputter deposition, Temperature metrology, Shape memory alloys, Nickel, Silicon, Argon, X-ray diffraction

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Proceedings Article | 20 October 2000 Paper

Thermal modeling of low-power micromachined solid state integrated gas sensor

Yanju Liu, Hejun Du, Yongqing Fu

Proceedings Volume 4230, (2000) https://doi.org/10.1117/12.404917

KEYWORDS: Gas sensors, Sensors, Silicon, Metals, Semiconductors, Solid state electronics, Oxides, Thermal modeling, Micromachining, NOx

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Proceedings Article | 22 June 2000 Paper

Systematic design of displacement-amplifying mechanism for piezoelectric stacked actuators using topology optimization

Gih Lau, Hejun Du, Mong Lim

Proceedings Volume 3985, (2000) https://doi.org/10.1117/12.388873

KEYWORDS: Amplifiers, Solids, Actuators, Optimization (mathematics), Printing, Finite element methods, Mechanical engineering, Ceramics, Mechanical efficiency, Head

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Showing 5 of 22 publications

Conference Committee Involvement (2)

Second International Conference on Smart Materials and Nanotechnology in Engineering

8 July 2009 | Weihai, China

Smart Materials III

13 December 2004 | Sydney, Australia

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