Publications
Invited Presentations
Conference Presentations
Other research highlights
Publications:
18) B. Xu and J. F. Gilchrist, "Shear migration and chaotic mixing of particle suspensions in a time-periodic lid-driven cavity", submitted.
17) C. Gao, S. D. Kulkarni, J. F. Morris, and J. F. Gilchrist, "Direct investigation of anisotropic suspension structure in pressure-driven flow", submitted.
16) 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.
15) P. Kumnorkaew, A. L. Weldon, and J. F. Gilchrist, "Matching Constituent Fluxes for Convective Deposition of Binary Suspensions", Langmuir, accepted. (pdf)
14) 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)
13) 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)
12) 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)
11) P. Kumnorkaew and J. F. Gilchrist, "Effect of Nanoparticle Concentration on the Convective Deposition of Binary Suspensions", Langmuir, 25 (11), 6070-6075, 2009.( pdf)
10) 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)
9) 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)
8) 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)
7) C. Gao and J. F. Gilchrist, "Shear-Induced Particle Migration in 1D, 2D, and 3D Flows", Physical Review E, 77, 025301, 2008. (pdf)
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)
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)
Other Refereed Publications:
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.
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.
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.
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.
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.
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.
Patents:
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:
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:
J. F. Gilchrist, Particle self-organization in thin film and pressure-driven flows, Department of Chemical Engineering, Princeton University, April 2010
J. F. Gilchrist, Particle self-organization in thin film and pressure-driven flows, Levich Institute, City College of New York, February 2010
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", National Institute of Standards and Technology, December 2009
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Physics, Lehigh University
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Chemical and Biomolecular Engineering, University of Maryland, September 2009
J. F. Gilchrist and Pisist Kumnorkaew, "Convective microsphere monolayer deposition - fundamentals and applications", Americal Chemical Society Fall 2009 National Meeting, Washington, DC, August 2009
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Chemical and Biological Engineering, Northwestern University, April 2009
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Chemical Engineering, University of Notre Dame, January 2009
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Mechanical Engineering, University of Maryland, Baltimore County, December 2008
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Chemical Engineering, Penn State University, October 2008
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Mechanical Engineering, Temple University, October 2008
J. F. Gilchrist, "Particle Migration and Self-Organization in Simple and Chaotic Flows", Department of Chemical and Biomolecular Engineering, Johns Hopkins University, February 2008
J. F. Gilchrist, "Suspension mixing and segregation in 1D, 2D, and 3D flows", Fifth International Conference on Nanochannels, Microchannels and Minichannels, Universidad De Las Americas Puebla, Mexico, June 2007
J. F. Gilchrist, "Competition Between Chaotic Mixing and Particle Self-Organization in Granular Tumblers and Microchannels", Department of Chemical Engineering, Rutgers University, December 2006
J. F. Gilchrist, "Competition Between Chaotic Mixing and Particle Self-Organization in Granular Tumblers and Microchannels", W. G. Pritchard Lab Seminar Series, Department of Mathematics, Penn State University, October 2006
J. F. Gilchrist, "Competition Between Chaotic Mixing and Particle Self-Organization in Granular Tumblers and Microchannels", Department of Chemical Engineering, Washington University, April 2006
J. F. Gilchrist, "Competition Between Chaotic Mixing and Particle Self-Organization in Granular Tumblers and Microchannels", Department of Chemical Engineering, Columbia University (Special IGERT seminar, sponsored jointly with City College Chemical Engineering), April 2006
J. F. Gilchrist, "Competition Between Chaotic Mixing and Segregation in Granular Tumblers and Microchannels", Department of Physics, Lehigh University, December 2005
J. F. Gilchrist, "Competition Between Mixing and Segregation in Granular Tumblers", SIAM Conference on Applications of Dynamical Systems, May 2005
J. F. Gilchrist, "Use of Microsphere-Nanoparticle Systems for Biological Sensors", Center for Optical Technologies, Lehigh University, May 2005
J. F. Gilchrist, "Dynamic Particle Self-Organization from Meters to Nanometers", Department of Materials Science and Engineering, Lehigh University, May 2005
J. F. Gilchrist, "Behavior of Microsphere-Nanoparticle Mixtures", Microsystems Seminar, Cornell University, March 2005
Recent Conference Presentations:
James F. Gilchrist, Colin Armstrong, Richard Evans, Kenneth Ford, and Hugo S. Caram, "Measurement of Density Fluctuations in a Vertically Oscillated Granular Bed at the Onset of Vibrofluidization", APS Division of Fluid Dynamics, November 2009.
Changbao Gao and James F. Gilchrist, "Direct Measurement of Suspension Structure in Pressure Driven Flow", AIChE Annual Meeting, November 2009.
Pisist Kumnorkaew, Alexander L. Weldon, and James F. Gilchrist, "Convective Deposition of Binary Suspensions", AIChE Annual Meeting, November 2009.
Bu Xu and James F. Gilchrist, "Mixing and Shear-Induced Migration in a 2D Time-Periodic Cavity-Driven Flow", AIChE Annual Meeting, November 2009.
Pisist Kumnorkaew, Alexander L. Weldon, and James F. Gilchrist, "Convective Deposition of Binary Suspensions", Society of Rheology 81st Annual Meeting, October 2009.
Changbao Gao and James F. Gilchrist, "Direct Measurement of Suspension Structure in Pressure-Driven Flow", Society of Rheology 81st Annual Meeting, October 2009.
Pisist Kumnorkaew and James F. Gilchrist, "Direct Visualization of Convective Deposition of Microsphere Monolayers", ACS Colloids and Surface Science Symposium, June 2009.
James F. Gilchrist and Ryan Slopek, "Fabrication of Microvasculature Via Suspension Dielectrophoresis", ACS Colloids and Surface Science Symposium, June 2009.
Changbao Gao, Bu Xu, and James F. Gilchrist, "Suspension Transport, Migration, and Structure In Microchannel Mixers", ACS Colloids and Surface Science Symposium, June 2009.
Pisist Kumnorkaew and James F. Gilchrist, "Direct Visualization of Rapid Convective Deposition of Microsphere Monolayers", 12th Annual Tiger-Hen-Hawk Rheology Symposium, Lehigh University, May 2009.
James F. Gilchrist, Pisist Kumnorkaew, Nelson Tansu, Yik-Khoon Ee, "Rapid Convective Deposition For Fabrication of Microlens Arrays", APS March Meeting, March 2009.
James F. Gilchrist, Kenneth J. Ford, and Hugo S. Caram, "Density Measurements In a Vibro-Fluidized Deep Granular Bed", APS Division of Fluid Dynamics, November 2008.
James F. Gilchrist and Pisist Kumnorkaew, "Direct Visualization of Rapid Convective Deposition of Microsphere Monolayers", APS Division of Fluid Dynamics, November 2008.
Ryan P. Slopek and James F. Gilchrist, "The Assembly of Microwires from Monomeric Solution of Nanoparticles Using Dielectrophoresis", AIChE Annual Meeting, November 2008.
Pisist Kumnorkaew and James F. Gilchrist, "Direct Visualization of Rapid Convective Deposition of Microsphere Monolayers", AIChE Annual Meeting, November 2008.
Changbao Gao and James F. Gilchrist, "Microscale Mixing of Mono- and Bi-Dispersed Microsphere Suspensions", AIChE Annual Meeting, November 2008.
Bu Xu and James F. Gilchrist, "Mixing and Shear-Induced Migration In a 2D Time-Periodic Cavity-Driven Flow", AIChE Annual Meeting, November 2008.
Kenneth J. Ford, James F. Gilchrist, and Hugo S. Caram, "Power Consumption and Granular Flow In a Vibro-Fluidized Stirred Granular Bed", AIChE Annual Meeting, November 2008.
Kenneth J. Ford, James F. Gilchrist, and Hugo S. Caram, "Density Measurements In a Vibro-Fluidized Deep Granular Bed", AIChE Annual Meeting, November 2008.
James F. Gilchrist and Pisist Kumnorkaew, "Rapid convective deposition of microsphere monolayers for fabrication of microlens arrays", The XVth International Congress on Rheology, August 2008.
James F. Gilchrist and Changbao Gao, "", The XVth International Congress on Rheology, August 2008.
C. Gao and J. F. Gilchrist, "Shear-induced migration in microchannel flows", 11th Tiger-Hen-Hawk Rheology Symposium, University of Delaware, April 2008.
P. Kumnorkaew, Y. K. Ee, N. Tansu and J. F. Gilchrist, "Self-Assembled Polystyrene-Silica Microlens Arrays"(poster), 11th Tiger-Hen-Hawk Rheology Symposium, University of Delaware, April 2008.
P. Kumnorkaew, Y. K. Ee, N. Tansu and J. F. Gilchrist, "Self-Assembled Polystyrene-Silica Microlens Arrays"(poster), Polymer Nanocomposites, Lehigh University, March 2008.
James Gilchrist, Kenneth Ford, and Hugo Caram, "Power Consumption And Granular Flow In A Vibro-Fluidized Stirred Granular Bed", APS Division of Fluid Dynamics, November 2007.
P. Kumnorkaew, Y. K. Ee, N. Tansu and J. F. Gilchrist, "Rapid Convective Deposition Of Microsphere Monolayers For Fabrication Of Microlens Arrays", AIChE Annual Meeting, November 2007.
J. F. Gilchrist and C. Gao, "Shear-Induced Migration Of Suspensions In 1D, 2D, And 3D Microchannel Flows", AIChE Annual Meeting, November 2007.
K. J. Ford, J. F. Gilchrist, and H. S. Caram, "Power Consumption And Granular Flow In A Vibro-Fluidized Stirred Granular Bed", AIChE Annual Meeting, November 2007.
J. F. Gilchrist and C. Gao, "Shear-induced migration of suspensions in 1D, 2D, and 3D open flows", The Society of Rheology 79th Annual Meeting, October 2007.
C. Gao and J. F. Gilchrist, "Shear-induced migration of suspensions in 3D microfluidic geometries", ACS Colloids and Surface Science Symposium, June 2007.
P. Kumnorkaew, Y. K. Ee, N. Tansu, J. F. Gilchrist, "Deposition of microsphere monolayers for microlens arrays", ACS Colloids and Surface Science Symposium, June 2007.
J. F. Gilchrist, K. J. Ford, and H. S. Caram, "Power dissipation and fluidization in a vibrated/stirred granular flow", APS Division of Fluid Dynamics, November 2006.
J. F. Gilchrist, K. J. Ford, and H. S. Caram, "Flow Transitions in a Model High Shear Granulator", AIChE Annual Meeting, November 2006.
J. F. Gilchrist and C. Gao, "Competition between Particle Migration and Chaotic Advection in Microchannels", AIChE Annual Meeting, November 2006.
J. F. Gilchrist, K. J. Ford, and H. S. Caram, "Transitions in a vibrated/stirred granular flow", The Society of Rheology 78th Annual Meeting, October 2006.
J. F. Gilchrist and C. Gao, "Particle migration in 1D, 2D, and 3D microchannel flows", The Society of Rheology 78th Annual Meeting, October 2006.
K. J. Ford, J. F. Gilchrist, and H. S. Caram, "Agitation and Mixing in Vibrated Beds", AIChE Spring National Meeting, April 2006.
J. F. Gilchrist and C. Gao, "Particle migration of a Brownian suspension in simple and chaotic pressure-driven microchannel flows", APS Division of Fluid Dynamics, November 2005.
J. F. Gilchrist, A. T. Chan, J. A. Lewis, and E. R. Weeks, "Phase Behavior and Structure of Strongly Adsorbing Microsphere-Nanoparticle Systems", ACS Colloids and Surface Science Symposium, June 2005.
J. F. Gilchrist, A. T. Chan, J. A. Lewis, and E. R. Weeks, "Structure of Strongly Adsorbing Microsphere - Nanoparticle Mixtures", APS Division of Fluid Dynamics, November 2004
J. F. Gilchrist, A. T. Chan, J. A. Lewis, and E. R. Weeks, "Phase Behavior and Structure of Strongly Adsorbing Microsphere-Nanoparticle Systems", AIChE Annual Meeting, November 2004
Other research highlights:
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