Dung-An Wang, Ph.D.
Professor
Graduate Institute of Precision Engineering
National Chung Hsing University

Research Highlights       Words of wisdom       Lab time out      How a student is valued      Moral of the lab

International visitor

Green energy harvester

A new piezoelectric energy harvester for harnessing energy from flow induced vibration is developed.  It converts flow energy into electrical energy by piezoelectric conversion with oscillation of a piezoelectric film.  Experimental results show that an open circuit output voltage of 2.2 Vpp and an instantaneous output power of 0.2 microW are generated when the excitation pressure oscillates with an amplitude of 1.196 kPa and a frequency of about 26 Hz.

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Ultrasonic horns

A new horn for high displacement amplification is developed.  The profile of the horn is a cubic Bézier curve.  A design method of the horn using an optimization scheme and finite element analyses is developed.  The displacement amplification of the proposed horn is 71% higher than that of the traditional catenoidal horn with the same length and end surface diameters.

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Prediction of distortion in quenched steel plate

A finite element program is developed to analyze the deformation and residual stress of steel plates after quenching.  This program is useful for decrease of the deformation of the steel plates after quenching.  

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Self-assembly of micro chips

A capillary-driven self-assembly method for rectangular-shaped microchips is developed.  Rectangular microchips are assembled to their specific in-plane orientations in an air environment.  Orbital shaking or a rotating magnetic field is used to assist the assembly process on a glass substrate. 

Multistable Mechanism

Multistable mechanisms are developed.  The tristable and quadristable mechanisms have no movable joints and gains its mobility from the deflection of flexible members. These compliant mechanisms can be easily miniaturized, offering a significant advantage for application in micro actuators, micro sensors and microelectromechanical systems.

Bistable Mechanism

A novel method to switch bistable micromechanisms is developed.  Dynamic switching is exploited to switch between the bistable states.

Anushka Naiknaware "So in conclusion, my design was successful --however, science never ends. There's always something to be done, something to be refined."

Dan Bricklin "You should take your unique backgrounds, skills and needs and build prototypes to discover and work out the key problems, and through that, change the world."

Andres Ruzo "In this age, where everything seems mapped, measured, and studied, in this age of information, I remind you all that discoveries are not just made in the black void of the unknown but in the white noise of overwhelming data.   There remains so much to explore.  We live in an incredible world.  So go out.  Be curious."

Goethe "If you can do, or dream you can, begin it now, for boldness has genius, power and magic in it."

Daniel Pink:「The secret to high performance: Intrinsic motivation, Autonomy, mastery and purpose.」

Autonomy – the desire to direct our own lives.

Mastery — the urge to get better and better at something that matters.

Purpose — the yearning to do what we do in the service of something larger than ourselves.

Brian McLaren:「Your question is better than my answer.」

Ken Robinson：「The real role of leadership in education is not and should not be command and control.  The real role of leadership is climate control, creating a climate of possibility.  And if you do that, people will rise to it.」

「Better to light one candle than to curse the darkness」。 Written by a nun at a class.

「與其詛咒黑暗不如點亮蠟燭」。

宮崎駿：「人們沒有經過努力，卻靠著機械式操作所得到的東西，只會妨害自我成長。」

Miyazaki Hayao:「Things obtained by mechanical operations without efforts, will prevent personal growth.」

宮崎駿：「誰都能得到的東西，沒有什麼了不起，真正重要的東西，沒有辦法靠i系列商品得到」。

Miyazaki Hayao:「It doesn't worth much to obtain things everyone can get.  What really matters can not be obtained by i-series products.」

日本黛安芬總經理吉越浩一郎連續十九年，帶領公司持續成長與獲利。他以每週一早上八點半的會議，作為公司一個星期開始的第一件事。他用這個會議創造緊張感，對於任何工作問題或延誤，不接受任何藉口，要求「明天之前」交出改善成果（見EMBA雜誌第259期）。

Koichiro Yoshikoshi, Japan Triumph CEO, leads the company for continuous growing and earning for the past nineteen years.  Meeting at 8:30 on Monday morning is the first thing of his company.  He uses the meeting to create the atmosphere of tenseness.  No excuse is accepted for any work problem or delay, improvement must be shown before tomorrow. (see EMBA v. 259) 

大前研一說，一個人下班後的四小時，就決定了他人生的發展、成就和命運。有人下班後總窩在沙發上看電視，有人游泳練身體，有人學習新技能。你可以明顯想像他們的未來會有多不同。 對一個公司來說，星期一早上的兩小時，很可能就決定了公司的未來。因為它預示公司的節奏，以及重點和文化。

Kenichi Ohmae:「 Development, achievement and fate of a person are decided during the four hours after work.  Some sit on couches to watch TV, some work out by swimming, some learn new skills.  You can imagine how different their future will be.  To a company, the two hours on Monday morning may decide the future of the company.  Because this tells the rhythm, focus and culture of the company.」

Einstein "Logic will get you from A to B. Imagination will take you everywhere."

Kittel, Knight, Ruderman - We are honest and actually make the observations we recorded, and we publishes the results of our work in a form permitting others to duplicate the experiment or observation.

王明珂：在學習典範學術法則外，要懷疑及反思典範，並注意邊緣及不尋常的現象。

"以鼓勵取代責罵，用觀念和球員溝通，是一位好教練，也是非常好的心靈導師" www.chinatimes.com

家葦主廚日 2011 October 29th

大甲媽祖演唱會 2010 April 15th

左起 輝遵 牛奶 阿元 家葦 東安

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Hua Tsun, A Yuan Birthday parth 2010 May 13th

左起 牛奶 阿元 家葦 輝遵

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2. Does she/he show up on time?

3. How often she/he comes to the advisor's office to discuss/show her/his work.

4. Does she/he fulfill the minimum working days/hours?