Faculty & Staff

Chang-Hwan Choi, Ph.D.

Assistant Professor

Research Interest
● MEMS/NEMS
● 3D Nanofabrication
● Micro/Nano-fluidics
● Fluid Mechanics on Micro/Nano-scale
● Biosensors
● Nanobioscience and –engineering
● Biomaterials and Tissue Engineering

Contact

Email: cchoi@stevens.edu
Homepage:
http://personal.stevens.edu/~cchoi/
Office: E-321
Phone #: 201.216.5579
Fax #: 201.216.8315

Education, Experiance, Honors, Awards, Research & Professional Activities

Education
● Ph.D. in Mechanical Engineering, University of California at Los Angeles (UCLA), Los Angeles, CA, December 2006
● M.S. in Mechanical Engineering, Brown University, Providence, RI, USA, May 2002
● M.S. in Aerospace Engineering, Seoul National University, Seoul, Korea, February 1997
● B.S. in Aerospace Engineering, Seoul National University, Seoul, Korea, February 1995

Professional Experience
● January 2007 – Current, Assistant Professor, Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ
● December 1999 – June 2000, Researcher, Korea Aerospace Research Institute, Daejeon, Korea
● March 1997 – November 1999, Lecturer, Chandrakasem Rajabhat University, Bangkok, Thailand
● February 1996 – December 1996, Assistant Researcher, Korea Aerospace Research Institute, Daejeon, Korea

Honors and Awards
● KUSCO/KSEA Scholarship, 2006, Korea-U.S. Science Cooperation Center/Korean-American Scientists and Engineers Association
● Graduate Fellowship, 2002, California NanoSystems Institute
● Engineering Research Fellowship, 2000, Brown University
● National Fellowship, 2000, Korean Government
● Magna cum laude Honors, 1995, Seoul National University

Professional Societies
● Member of The American Society of Mechanical Engineers (ASME)
● Member of Institute of Electrical and Electronics Engineers (IEEE)
● Member of Korean-American Scientists and Engineers Association (KSEA)

Publications

Publications

● Journal
1. C-H. Choi, S. H. Hagvall, B. M. Wu, J. C. Y. Dunn, R. E. Beygui, C-J. Kim, “Cell Interaction with Three-Dimensional Sharp-Tip Nanotopography”, Biomaterials 28, 1672-1679 (2007).
2. C-H. Choi, C.-J. Kim, “Fabrication of Dense Array of Tall Nanostructures over a Large Sample Area with Sidewall Profile and Tip Sharpness Control”, Nanotechnology 17, 5326-5333 (2006).
3. C-H. Choi, C-J. Kim, “Choi and Kim Reply” (A Reply to the Comment on ‘Large Slip of Aqueous Liquid Flow over a Nanoengineered Superhydrophobic Surface’), Physical Review Letters 97, 109602 (2006).
4. C-H. Choi, U. Ulmanella, J. Kim, C.-M. Ho, C-J. Kim, “Effective Slip and Friction Reduction in Nanograted Superhydrophobic Microchannels”, Physics of Fluids 18, 087105 (2006) (also in Virtual Journal of Nanoscale Science & Technology, volume 14, issue 10, September 4, 2006).
5. C-H. Choi, C-J. Kim, “Large Slip of Aqueous Liquid Flow over a Nanoengineered Superhydrophobic Surface”, Physical Review Letters 96, 066001 (2006) (also in Virtual Journal of Nanoscale Science & Technology, volume 13, issue 8, February 27, 2006).
6. C-H. Choi, K. J. A. Westin, K. S. Breuer, “Apparent Slip Flows in Hydrophilic and Hydrophobic Microchannels”, Physics of Fluids 15, 2897-2902 (2003).
7. K. J. A. Westin, C.-H. Choi, K. S. Breuer, “A Novel System for Measuring Liquid Flow Rates with Nanoliter per Minute Resolution”, Experiments in Fluids 34, 635-642 (2003).

● News in Media
1. Nanowerk, “Novel method simplifies large-scale nanofabrication process”, October 27, 2006.
2. UCLA Engineer, “Researchers Discover No-slip Condition Does Not Hold at the Nanoscale”, Issue No. 16, Page 8-9, Fall 2006.
3. Deutschlandfunk: German National Public Radio, “Weniger Reibung durch spitze Nadeln”, March 8, 2006.
4. Material News: MRS (Materials Research Society), “New superhydrophobic surface developed”, February 8, 2006.
5. Physics News Update: The AIP Bulletin of Physics News, “A Superhydrophobic Surface”, Number 764 #1, February 6, 2006.

● Conference Proceedings
1. C-H. Choi, S. H. Hagvall, J. C. Y. Dunn, B. M. Wu, C-J. Kim, “Cell Adhesions on NanoTurf Surfaces”, in Proceedings of the 19th International Conference on Micro Electro Mechanical Systems (MEMS 2006), January 22-26, 2006, Istanbul, Turkey.
2. C-H. Choi, C-J. Kim, “Measurement of Liquid Slip on NanoTurf Surfaces”, in Proceedings of Integrated Nanosystems: Design, Synthesis and Applications (NANO2005), September 14-16, 2005, University of California, Berkeley, CA, USA.
3. C-H. Choi, C-J. Kim, “Control of Sidewall Profile of Silicon Nanostructures in Bosch Process and Its Use for Sharp Tip Fabrication”, in Proceedings of the 2005 US-Korea Conference on Science, Technology, & Entrepreneurship (UKC2005), August 11-13, 2005, Irvine, CA, USA.
4. C-H. Choi, C-J. Kim, “Fabrication of Silicon Nanostructures with Various Side Wall Profiles and Sharp Tips”, in Proceedings of the 13th International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers’05), June 5-9, 2005, Seoul, Korea.
5. C-J. Kim, C-H. Choi, “Nano-engineered Low Friction Surface for Liquid Flow”, in Proceedings of the 6th KSME-JSME Thermal and Fluids Engineering Conference, March 20-23, 2005, Jeju, Korea.
6. C.-H. Choi, J. Kim, C.-J. Kim, “NanoTurf Surfaces for Reduction of Liquid Flow Drag in Microchannels”, in Proceedings of Integrated Nanosystems: Design, Synthesis and Applications (NANO2004), September 22-24, 2004, Pasadena, CA, USA.
7. C-H. Choi, K. J. A. Westin, K. S. Breuer, “To Slip or Not to Slip: Water Flows in Hydrophilic and Hydrophobic Microchannels”, in Proceedings of ASME 2002 International Mechanical Engineering Conference and Exposition (IMECE), November 2002, New Orleans, LA, USA.
8. K. J. A. Westin, C-H. Choi, P. Huang, Z. Cao, K. S. Breuer, B. Caswell, P. Richardson, M. Sibulkin, “Liquid Transport Properties in Submicron Channel Flows”, in Proceedings of ASME 2001 International Mechanical Engineering Conference and Exposition (IMECE), November 2001, New York, NY, USA.
9. K. J. A. Westin, C.-H. Choi, K. S. Breuer, “Rheological Shear Experiments in Micron Scale Geometries", in Proceedings of the 5th International Conference on Micro Total Analysis Systems (MicroTAS2001), October 2001, Monterey, CA, USA.