Multidisciplinary Engineering Micro-Systems Group
    Mechanical Engineering: University of Colorado at Boulder

Professor

Victor M. Bright

Students

Alicia Baca

Joseph J. Brown

Yuan-Jen (Richard) Chang

Ho-Chiao (Rick) Chuang

Keith Cobry

Bradley Davidson

Chris DeLuca

Wendy R. Krauser

Christopher Oshman

Michael Simon

Others

CU MEMS Alumni

AFIT MEMS Alumni

Collaborators

CU MEMS Critters

Group Outings

 
 

Yuan-Jen Chang (Richard)
Changy@Colorado.edu

Yuan-Jen Chang (Richard) was born in Taiwan. He received his B.S. in the Department of Mechanical Engineering from National Taiwan University (NTU), Taiwan, and M.S. in the Department of Aeronautics and Astronautics from National Cheng Kung University (NCKU), Taiwan, respectively, in 1996 and in 1998. Prior to joining Dr. V. M. Bright’s group, Mr. Chang worked in Industrial Technology Research Institute (ITRI), Taiwan, as a mechanical design engineer. He used SolidWorks for the mechanical design in the development of Semi-Solid Injection Forming using Thixomolding on Magnesium. Currently, he is a doctoral candidate in the Department of Mechanical Engineering at the University of Colorado at Boulder. His research focuses on the fabrication of liquid lenses using electrowetting on dielectric (EWOD) technology as well as the quarter waveplate using form birefringence for Chip-Scale Atomic Clocks (CSAC). He gained a lot of hand-on experience on photolithography, e-beam lithography, thin-film deposition, and wet- and dry-etching on different materials. His related research interestes include micro-fabrication and micro-optical systems. He also enjoys in playing badminton every week.

     
   
       

JOURNAL PUBLICATIONS

  1. Y.J. Chang, K. Mohseni, V.M. Bright, “Fabrication of Tapered SU-8 Structure and Effect of Sidewall Angle for A Variable Focus Microlens using EWOD”, Sensors and Actuators A – Physical, Vol. 136, 2007, pp. 546-553
  2. A.D. Laws, Y.J. Chang, V.M. Bright, Y.C. Lee,  “Thermal Conduction Switch for Thermal Management of Chip Scale Atomic Clocks”, Journal of Electronic Packaging, accepted for publication, 2007.

CONFERENCE PUBLICATIONS

  1. Y.J. Chang, B. Davidson, D. Seghete, S. M. George, V. M. Bright, “Fabrication of Two-Terminal Nano-Switches by Atomic Layer Deposited Tungsten”, submit to Hilton Head 2008
  2. D. Seghete, Y.J. Chang, B. Davidson, S. M. George, V. M. Bright, “Synthesis and Characterization of Hybrid Organic-Inorganic Thin Films via Atomic Layer Deposition for MENS/NEMS”, submit to Hilton Head 2008
  3. Y.J. Chang, K. Cobry, V.M. Bright, “Atomic Layer Deposited Alumina for Micromachined Resonators”, Proceedings of  21st IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2008), Tucson, USA, Jan. 13-17, 2008, pp. 387-290
  4. Y.J. Chang, K. Cobry, C. Wilson, S.M. George, and V.M. Bright, “Atomic Layer Deposited Films for Micro- and Nano-scale Electro- Mechanical Systems,” ECS Transactions, Vol. 3, Issue 15, 2007, pp.207-218.
  5. Y.J. Chang, K. Mohseni, V. M. Bright, “Analysis and Numerical Simulation of EWOD of a Droplet for Application in a Variable Focus Microlens,” presented in APS 59th annual meeting of the division of fluidic dynamics, Tempa Bay, FL , Nov. 19-21, 2006
  6. A. Laws, Y.J. Chang, V.M. Bright, and Y.C. Lee, “Thermal Conduction Switch for Thermal Management of Chip Scale Atomic Clocks,” 2006 ASME International Mechanical Engineering Congress and Exposition, Chicago, IL , Nov. 5-10, 2006
  7. A. Laws, Y.J. Chang, V.M. Bright, and Y.C.Lee "Heat Switch for Low Power Thermal Management of Chip Scale Atomic Clocks", 20th Eurosensors Confference, Goteburg, Sweeden, September 17-20, 2006.
  8. Y.J. Chang, K. Mohseni, V. M. Bright, "A Tunable Microlens Using Electrowetting on SU-8", 2nd International Conference on Transport Phenomena in Micro and Nano Devices, Barga, Italy, June 11-15, 2006
  9. A. Laws, Y.J. Chang, V.M. Bright, and Y.C.Lee "Bimetallic Buckling Disk for Thermal Management of Chip Scale Atomic Clocks", 15th U.S. National Congress on Theoretical and Applied Mechanics, Boulder, CO, June 25-30, 2006.
  10. Y. J. Chang, V. M. Bright, E. Schonbrun, and K. Mohseni, "A Variable Focus Microlens Using EWOD on Tapered SU-8 Structure", Proceedings of Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head, South Carolina, June 4-8, 2006, pp.256-259
  11. A. Laws., Y.J. Chang, V.M. Bright, and Y.C. Lee, "Thermal Management for Chip-Scale Atomic Clocks,” Proceedings of IPACK2005, ASME InterPACK'05, July 17-22, 2005, San Francisco, CA, USA.
  12. Y.J Chang, S. Lee, A. Brannon, A.D Laws, J. Breitbarth, Z. Popovic, V.M. Bright, Y.C. Lee, "MEMS and Packaging for Chip-Scale Atomic Clocks", Proceedings of IMAPS Conference and Exhibition on Ceramic Interconnect Technology: The Next Generation II, April 26-28, 2004, pp.121-126
  13. D. L. Sheu, Y. M. Chen, Y.J. Chang, and J. S. Chern, “Optimal Glide for Maximum Range”, AIAA Paper No. A98-37277, 1998, pp. 771-781.

 

Research Projects:

  
 

Last Updated: February 2008