Publications
Invited Presentations
Conference Presentations
Other research highlights
Lehigh Peer Reviewed Publications:
30) K. J. Ford, C. D. Armstrong, R. P. Evans, H. S. Caram, and J. F. Gilchrist, "Measurement of Density Fluctuations in a Vertically Oscillated Granular Bed at the Onset of Vibrofluidization", submitted.
29) X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, "Light Extraction Efficiency Enhancement of III-Nitride Light-Emitting Diodes by using 2-D Close-Packed TiO2 Microsphere Arrays", submitted.
28) A. L. Weldon, P. Kumnorkaew, B. Wang, X. Cheng, and J. F. Gilchrist, "Fabrication of Mesoporous Polymeric Membranes through Binary Convective Deposition", ACS Applied Materials and Interfaces, Volume 4, Issue 9, 4532-4540.
27) Z. Song, E. S. Daniels, E. D. Sudol, M. S. El-Aasser, J. F. Gilchrist, and A. Klein, "Tracking the Fate of Seed Particles in Dispersion Polymerization: Preparation and Application of Fluorescent Polymer Particles", Journal of Applied Polymer Science, Volume 127, Issue 4, pages 2635-2640.
26) B. Wang, A. L. Weldon, P. Kumnorkaew, B. Xu, J. F. Gilchrist, and X. Cheng, "Effect of Surface Nanotopography on Immunoaffinity Cell Capture in Microfluidic Devices", Langmuir 27, 11229, 2011. pdf
25) X. H. Li, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, "Light Extraction Effi ciency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios", IEEE Photonics Journal, vol. 3 (3), pp. 489-499, June 2011.(pdf)
24) B. Xu and J. F. Gilchrist, "Shear migration and chaotic mixing of particle suspensions in a time-periodic lid-driven cavity", Physics of Fluids, 22, 053301, 2010. (pdf)
23) C. Gao, S. D. Kulkarni, J. F. Morris, and J. F. Gilchrist, "Direct investigation of anisotropic suspension structure in pressure-driven flow", Physical Review E, 81, 041403, 2010. (pdf)
22) P. Kumnorkaew, A. L. Weldon, and J. F. Gilchrist, "Matching Constituent Fluxes for Convective Deposition of Binary Suspensions", Langmuir, 26 (4), 2401-2405, 2010. (pdf)
21) R. P. Slopek and J. F. Gilchrist, "Self-assembly of Wires in Acrylate Monomer via Nanoparticle Dielectrophoresis", Journal of Physics D: Applied Physics, 43, 045402, 2010. (pdf)
20) Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. Zhao, J. F. Gilchrist, and N. Tansu, "Optimization of Light Extraction Efficiency of III-Nitride Light Emitting Diodes with Self-Assembled Colloidal-based Microlenses", IEEE J. Selected Topics in Quantum Electronics, vol. 15(4), pp. 1218-1225, 2009. (pdf)
19) Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, J. F. Gilchrist, and N. Tansu, "Light Extraction Efficiency Enhancement of InGaN Quantum Wells Light-Emitting Diodes with Polydimethylsiloxane Concave Microstructures", Optics Express, 17, 16, pp. 13747-13757, 2009. (pdf)
18) P. Kumnorkaew and J. F. Gilchrist, "Effect of Nanoparticle Concentration on the Convective Deposition of Binary Suspensions", Langmuir, 25 (11), 6070-6075, 2009.( pdf)
17) C. Gao, B. Xu, and J. F. Gilchrist, "Mixing and segregation of microspheres in microchannel flows of mono- and bi-dispersed suspensions", Physical Review E, 79, 036311, 2009. (pdf)
16) Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, J. F. Gilchrist, and N. Tansu, "The Use of Polydimethylsiloxane Concave Microstructures Arrays to Enhance Light Extraction Efficiency of InGaN Quantum Wells Light-Emitting Diodes", in Proc. of the IEEE/OSA Conference on Lasers and Electro-Optics (CLEO) 2009, Baltimore, MD, May 2009.
15) Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, J. F. Gilchrist, and N. Tansu, "Enhancement of Light Extraction Efficiency of InGaN Quantum Wells Light-Emitting Diodes with Polydimethylsiloxane Concave Microstructures", in Proc. of the SPIE Photonics West 2009, LEDs: Materials, Devices, and Applications for Solid State Lighting XIII, San Jose, CA, Jan 2009.
14) K. J. Ford, J. F. Gilchrist, and H. S. Caram, "Power Consumption and Granular Flow in a Vibro-Fluidized Stirred Granular Bed", Powder Technology, 192, 33, 2009. (pdf)
13) P. Kumnorkaew, Y. Ee, N. Tansu, and J. F. Gilchrist, "Investigation of the Deposition of Microsphere Monolayers for Fabrication of Microlens Arrays", Langmuir, 24 (21), 12150-12157, 2008. (Cover Article) (pdf)
12) Y. K. Ee, R. A. Arif, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, "Optimization and Fabrication of III-Nitride Light-Emitting Diodes with Self-Assembled Colloidal-Based Convex Microlens Arrays", in Proc. of the IEEE Photonics Global 2008, Nanophotonics Symposium, Singapore, Republic of Singapore, December 2008.
11) Y. K. Ee, P. Kumnorkaew, R. A. Arif, J. F. Gilchrist, and N. Tansu, "Size Effect of SiO2 / Polystrene Microspheres in the Enhancement of Light Extraction Efficiency of InGaN Quantum Wells LEDs", in Proc. of the IEEE/OSA Conference on Lasers and Electro-Optics (CLEO) 2008, San Jose, CA, May 2008.
10) C. Gao and J. F. Gilchrist, "Shear-Induced Particle Migration in 1D, 2D, and 3D Flows", Physical Review E, 77, 025301, 2008. (pdf)
9) Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, J. F. Gilchrist, and N. Tansu, "Comparison of Numerical Modeling and Experiments of InGaN Quantum Wells Light Emitting Diodes with SiO2 / Polystyrene Microlens Arrays", in Proc. of the SPIE Photonics West 2007, Light-Emitting Diodes: Research, Manufacturing, and Applications XII, San Jose, CA, Jan 2008.
8) Y. K. Ee, P. Kumnorkaew, R. A. Arif, J. F. Gilchrist, and N. Tansu, "Enhancement of Light Extraction Efficiency of InGaN Quantum Wells LEDs Using SiO2 Microspheres", in Proc. of the IEEE/OSA Conference on Lasers and Electro-Optics (CLEO) 2007, Baltimore, MD, May 2007.
7) J. F. Gilchrist and C. Gao, "Suspension Mixing and Segregation in 1D, 2D, and 3D Microchannel Flows", Proc. of ASME ICNMM2007 5th International Conference on Nanochannels, Microchannels, and Minichannels, June 2007.
6) Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, "Enhancement of Light Extraction Efficiency of InGaN Quantum Wells Light Emitting Diodes Using SiO2 Microspheres", Applied Physics Letters, 91, 221107, 2007. (pdf) (featured in Laser Focus World)
Prior Peer Reviewed Publications:
5) J. F. Gilchrist, A. T. Chan, E. R. Weeks, and J. A. Lewis, "Phase Behavior and 3D Structure of Strongly Attractive Microsphere-Nanoparticle Mixtures", Langmuir, 24, 11040, 2005. (pdf)
4) J. F. Gilchrist and J. M. Ottino, "Competition Between Chaos and Order: Mixing and Segregation in a Spherical Tumbler", Physical Review E, 68, 061303, 2003. (pdf)
3) K. M. Hill, D. V. Khakhar, J. F. Gilchrist, J. J. McCarthy, and J. M. Ottino, "Segregation-Driven Organization in Chaotic Granular Flows", Proceedings of the National Academy of Sciences, 96(21), pp. 11701-11706, 1999. (Cover Article) (pdf)
2) K. M. Hill, J. F. Gilchrist, D. V. Khakhar, J. J. McCarthy, and J. M. Ottino, "Mixing of Granular Materials: A Test-Bed Dynamical System for Pattern Formation", International Journal of Bifurcation and Chaos, 9, pp. 1467-1484, 1999. (Cover Article) (pdf)
1) D. V. Khakhar, J. J. McCarthy, J. F. Gilchrist, and J. M. Ottino, "Chaotic mixing of granular materials in two-dimensional tumbling mixers", Chaos, 9(1), pp. 195-205, 1999. (pdf)
Patents:
James F. Gilchrist, Mark A. Snyder, Pisist Kumnorkaew, Internal Microlenses for Dye-Sensitized Solar Cells. (Provisional Patent, and US Patent Pending)
Nelson Tansu, Xiao-hang Li, Hongping Zhao, Guangyu Liu, Gensheng Huang, James F. Gilchrist, and Pisist Kumnorkaew, Novel Supercontinuum Broadband White Light-Emitting Diodes. (Provisional Patent, and US Patent Pending).
Nelson Tansu, James F. Gilchrist, Yik-Khoon Ee, Pisist Kumnorkaew, Semiconductor Light-Emitting Devices Having Concave Microstructures Providing Improved Light Extraction Efficiency and Method for Producing Same. (Provisional Patent, and US Patent Pending)
Nelson Tansu, Yik Khoon Ee, James F. Gilchrist, Pisist Kumnorkaew, and Ronald A. Arif, Novel techniques to achieve large light extraction efficiency of nitride-based LEDs using a low cost and straight forward approach. More information here.
Theses:
Bu Xu, Microstructure, rheology, and mixing of suspensions, Lehigh University, 2012.
Pisist Kumnorkaew, Fundamental Study and applications of convective deposition of microsphere monolayers, Lehigh University, 2010.
C. Gao, Three-dimensional measurements of microstructure and particle migration in suspension flows, Lehigh University, 2009.
K. J. Ford, Experimental Investigation of Phase Behavior and Dynamics of Vertically Vibrated Deep Granular Beds, Lehigh University, 2008.
J. F. Gilchrist, Geometric Aspects of Mixing and Segregation in Granular Tumblers, Northwestern University, 2003
Recent Invited Presentations:
ASME Applied Mechanics Summer Conference, Brown University, July 2013
International Polymer Colloids Group, Shanghai, China, June 2013
TechConnect, Washington, D.C., May 2013
Technical University of Denmark, Department of Chemical Engineering, April 2013
8th Annual European Rheology Conference, Leuven, Belgium, April 2013
2012 Gordon Research Conference on Granular and Granular-Fluid Flow, July 2012
University of Minnesota, Coating Process Fundamentals Program, July 2012
University of California, Santa Barbara, Center for Interdisciplinary Research in Fluids, June 2012
California Institute of Technology, Department of Chemical Engineering, May 2012
University of Pittsburg, Department of Chemical and Petroleum Engineering, January 2012
University of California, Irvine, Department of Chemical Engineering and Materials Science, January 2012
Composites at Lake Louise, October 2011
American Physical Society March Meeting 2011, March 2011
University of Delaware, Center for Molecular and Engineering Thermodynamics, Februrary 2011
Princeton University, Department of Chemical Engineering, April 2010
City College of New York, Levich Institute, February 2010
National Institute of Standards and Technology, December 2009
Lehigh University, Department of Physics, 2009
University of Maryland, Department of Chemical and Biomolecular Engineering, September 2009
Americal Chemical Society Fall 2009 National Meeting, Washington, DC, August 2009
Northwestern University, Department of Chemical and Biological Engineering, April 2009
University of Notre Dame, Department of Chemical Engineering, January 2009
University of Maryland, Baltimore County, Department of Mechanical Engineering, December 2008
Penn State University, Department of Chemical Engineering, October 2008
Temple University, Department of Mechanical Engineering, October 2008
Johns Hopkins University, Department of Chemical and Biomolecular Engineering, February 2008
Fifth International Conference on Microchannels and Minichannels, Puebla, Mexico, June 2007
Rutgers University, Department of Chemical Engineering, December 2006
Penn State University, W. G. Pritchard Lab Seminar Series, Department of Mathematics, October 2006
Washington University, Department of Chemical Engineering, April 2006
Columbia University, IGERT seminar, sponsored jointly with City College of New York, April 2006
Lehigh University, Department of Physics, December 2005
SIAM Conference on Applications of Dynamical Systems, May 2005
Lehigh University, Center for Optical Technologies, May 2005
Lehigh University, Department of Materials Science and Engineering, May 2005
Cornell University, Microsystems Seminar, March 2005
Other research highlights:
March, 2010: Particulate systems - as much art as science, and fun to explore
March, 2010: These grains can be solid, liquid or dust
September, 2009: MICRO-OPTICS: Concave microlenses boost LED output
April, 2009: The minutest choreography
March, 2009: Student's bright, energy-efficient research recognized
November, 2008: Lehigh research on display at national convention
October, 2008: Collaboration with Professor Tansu from ECE mentioned in college article.
January, 2008: Microlens arrays improve the extraction efficiency of nitride LEDs
October, 2007: Particle flows: "Not all stirring is equal"
October, 2007: More efficient LEDs for a brighter future
June, 2006: Revenge of the NIRTs, Part II
Image of the Week, Beckman Institute, University of Illinois, 2004.
Cover Art from our article in Langmuir.
Cover Art from our article in PNAS.
Cover Art from our article in IJBC.
Cover Art from the article by J. M. Ottino, "Complex Systems", AIChE Journal, 49, 2, 2003.
Disclaimer: Publications downloaded from this website are to be used for educational purposes only. To obtain an official copy of any of these articles, contact the individual publishers.
gilchrist@lehigh.edu