Research Interests

• Harnessing wrinkling instabilities for advanced measurements of polymeric thin films
  
  
• Mechanics of complex interfaces
  
  
• Instability, adhesion, friction, and fracture at soft interfaces
  
  
• Biomimetic materials design
  
  

Professional Background

National Institute of Standards and Technology
Gaithersburg, MD
Postdoctoral Research Associate, July 2006 - present
Current project: Mechanical Instabilities in Polymer Films
Mentor: Dr. Christopher M. Stafford

Lehigh University
Bethlehem, PA
Doctor of Philosophy in Chemical Engineering, September 2006
Ph.D. Dissertation: Adhesion and Fracture at Soft Interfaces
Advisor: Professor Manoj K. Chaudhury

Awards & Honors

• NIST Sigma Xi Postdoctoral Poster Session 1st Place, "Surface wrinkling metrology for nanoscale polymeric materials," Feb. 2008.
  
  
• Phi Beta Delta, Honor Society for International Scholars (Beta Pi Chapter), Lehigh University, since Oct. 2004.
  
  
• Best Poster Presentation Award in Gordon Research Conference - Adhesion, Science of, "Roles of discontinuities and crack propagation in thin elastic films," Aug. 2004.
  
  
• Ticona Excellence Award for Outstanding Achievement in Graduate Research, Society of Plastics Engineers, "Model studies of fouling release and bio-inspired adhesion," Oct. 2003.
  
  

Recent Publications

2008

• Onset of wrinkling as a sensitive probe of residual stresses in thin polymer films
  J. Y. Chung, T. Q. Chastek, M. J. Fasolka & C. M. Stafford
  Submitted, 2008.
  
  
• Adhesive properties of a thin elastomeric film supported on a foam
  J. Y. Chung, J. Liu & M. K. Chaudhury
  Manuscript in preparation, 2008.
  
  

• Characterizing polymer brushes via surface wrinkling
  H. Huang, J. Y. Chung, A. J. Nolte & C. M. Stafford
  Chemistry of Materials, 19 (26): 6555-6560, Dec. 2007.
  
  
• Anisotropic wetting on tunable micro-wrinkled surfaces
  J. Y. Chung, J. P. Youngblood & C. M. Stafford
  Soft Matter, 3 (9): 1163-1169, Sep. 2007.
  
  
• Studying friction and shear fracture in thin confined films using a rotational shear apparatus
  M. K. Chaudhury & J. Y. Chung
  Langmuir, 23 (15): 8061-8066, Jul. 2007.
  
  
• Buckling modes of elastic thin films on elastic substrates
  H. Mei, R. Huang, J. Y. Chung, C. M. Stafford & H. -H. Yu
  Applied Physics Letters, 90 (15): 151902-1-151902-3, Apr. 2007.
  
  

2006

• Confinement-induced instability and adhesive failure between dissimilar thin elastic films
  J. Y. Chung, K. H. Kim, M. K. Chaudhury, J. Sarkar & A. Sharma
  The European Physical Journal E - Soft Matter, 20 (1): 47-53, May 2006.
  
  

2005

• Soft and hard adhesion*
  J. Y. Chung & M. K. Chaudhury
  The Journal of Adhesion, 81 (10-11): 1119-1145, Oct.-Nov. 2005.
  
  *One of a collection of papers honoring Manoj K. Chaudhury, recipient of The Adhesion Society Award for Excellence in Adhesion Science
  
  
• The influence of elastic modulus and thickness on the release of the soft-fouling green alga Ulva linza (syn. Enteromorpha linza) from poly(dimethylsiloxane) (PDMS) model networks
  M. K. Chaudhury, J. A. Finlay, J. Y. Chung, M. E. Callow & J. A. Callow
  Biofouling (The Journal of Bioadhesion and Biofilm Research), 21 (1): 41-48, Feb. 2005.
  
  
• Roles of discontinuities in bio-inspired adhesive pads*
  J. Y. Chung & M. K. Chaudhury
  Journal of the Royal Society Interface, 2 (2): 55-61, Mar. 2005.
  
  *Paper highlighted by The ESI Special Topics, Jan. 2008
  
  

• Peeling from a biomimetically patterned thin elastic film
  A. Ghatak, L. Mahadevan, J. Y. Chung, M. K. Chaudhury & A. Shenoy
  Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 460 (2049): 2725-2735, Sep. 2004.
  
  

Contact Address