PhD, Chemical Engineering, University of Minnesota DiplChemEng, National University of La Plata (Argentina) 2008 Fluid Dynamics Prize and Otto Laporte Lecture, American Physical Society 2008 “One Hundred Engineers of the Modern Era", American Institute of Chemical Engineers. 2007 Pirkey Lecture, University of Texas, Austin Additional honors and awards below Mixing and segregation; fluids; powders; materials processing

Research Group Website

CV (PDF)

Graduate Fellowships: NSF IGERT, Dynamics of Complex Systems

Research Interests: Complex systems, dynamics of granular matter, mixing and segregation

Current topics of interest include investigations of a broad class of problems where there is a competition between order and disorder, such as in mixing and segregation of granular matter or fluid mixing and, more generally, problems in the realm of complex systems involving tools such as agent-based models and network theory.

The interest in basic understanding of mixing lies in the ubiquity of mixing processes in technology and nature; examples are found in chemical, mechanical, and aeronautical engineering, but also in geophysics, physiology, oceanography, polymer engineering, and environmental sciences.

The work in granular dynamics involves a blend of theory, computations, and experimental work that reaches into applications. While important to a wide range of industries, our understanding of solid mixing and segregation is primitive. Some key questions we are currently addressing are: What features of mixing can be predicted computationally? What causes demixing and how it interplays with mixing? How can mixing be optimized?

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Recent Publications

J.M. Ottino and S. Wiggins, Introduction: Mixing in microfluidics, Phil Trans. Royal Soc. A, 362 (1818), 923-935 (2004).

S. Wiggins and J.M. Ottino, Foundations of chaotic mixing, Phil Trans. Royal Soc. A, 362 (1818): 937-970 (2004).

K.A. Smith, J.M. Ottino, M. Olvera de la Cruz, Dynamics of a drop at a fluid interface under shear. Phys. Rev. E 69 (4), 046302 (2004).

K.A. Smith, J.M. Ottino and M. Olvera de la Cruz, Encapsulated drop breakup in shear flow, Phys. Rev. Lett., 93(20) 20551-1/4 (2004).

K.A. Smith, J.M. Ottino, and P.B. Warren, Simple representation of contact-line dynamics in a level-set model of an immiscible fluid interface , Ind. Eng. Chem. Research, 44(5), 1194-1198 (2005).

N. Jain, J.M. Ottino, and R.M. Lueptow, Regimes of segregation and mixing in combined size and density granular systems: an experimental study, Granular Matter, 7(2-3): 69-81 (2005).

N. Jain, J.M. Ottino, and R.M. Lueptow, Combined size and density segregation and mixing in noncircular tumblers, Phys. Rev. E, 71(5), 051301 (2005).
 
S.J. Fiedor and J.M. Ottino, Mixing and segregation of granular matter: multi-lobe formation in time-periodic flows , J. Fluid Mech., 533, 223-236 (2005).

B.A. Socie, P. Umbanhowar, R.M. Lueptow, N. Jain, and J.M. Ottino, Creeping motion in granular flow, Phys. Rev. E, 71(3), 031304 (2005).

T. Arndt, T. Siegmann-Hegerfeld, S.J. Fiedor, R.M. Lueptow and J.M. Ottino, Dynamics of granular band formation; Long-term behavior in slurries, parameter space, and tilted cylinders, Phys. Rev. E, 71, 011306 (2005).

N.A. Pohlman, B.L. Severson, J.M. Ottino and R.M. Lueptow, Surface roughness effects in granular matter; Influence on angle of repose and the absence of segregation, Phys. Rev. E., 73, 031304 (2006).

N.A. Pohlman, S.W Meier, R.M. Lueptow, and J.M. Ottino, Surface Velocity in Three-Dimensional Granular Tumblers, J. Fluid Mech. 560, 355 – 368 (2006).

J.M. Ottino, Granular Matter as a Window into Collective Systems far from Equilibrium, Complexity, and Scientific Prematurity, Chem. Eng. Sci., 61, 4165-4171 (2006).

S.J. Fiedor, P.B. Umbanhowar, and J.M. Ottino, Dynamics of axial segregation in granular slurries: Parallel experiments and influence of aspect ratio and periodic tilting, Phys. Rev. E, 73, 041303 (2006).

N.A. Pohlman, J.M. Ottino and R.M. Lueptow, End-wall effects in granular tumblers: From quasi-two-dimensional flow to three-dimensional flow," Physical Review E (Vol. 74, No. 3): Phys. Rev. E 74, 031305 (2006)

S.W. Meier, S.E. Cisar, R.M. Lueptow, and J.M. Ottino, Capturing patterns and symmetries in time-periodic granular flow using polydisperse particles, Phys. Rev. E., 74(3), Art No 031310, Sept, 2006

B.L. Severson, J.M. Ottino, R.Q. Snurr, Analysis of lubrication failure using molecular simulation, Tribology Lett., 23(3), 253-260 (2006)

T. Arndt, A. Brucks, J.M. Ottino, and R.M Lueptow, Creeping granular motion under variable gravity levels, Phys, Rev, E.74(3), Art. No 031307, Part 1, Sept. 2006.

S.E. Cisar, P.B. Umbanhowar, and J.M. Ottino, Radial granular segregation under chaotic flow in 2D tumblers, Phys. Rev. E, 74(5), Art. No. 051305, Part 1, Nov. 2006.

S.W. Meier, R.M. Lueptow, J.M. Ottino, A dynamical systems approach to mixing and segregation of granular materials in tumblers, Advances in Physics, 56(5): 757-827 (2007).

B.L. Severson, R.Q. Snurr, J.M. Ottino, Granular mixtures: Analogy with chemical solution thermodynamics J. Chem. Phys. 127(17): Art. No. 174902 (2007).

S.J. Fiedor, P. Umbanhowar, J.M. Ottino, Effects of fluid viscosity on band segregation dynamics in bidisperse granular slurries, Phys. Rev. E 76, 041303 (2007).

S.W. Meier, D.A. Melani-Barreiro, J.M. Ottino, R.M. Lueptow, Coarsening of Granular Segregation patterns in quasi-two-dimensional tumblers, Nature Physics, 4(3) 244-248, 2008

A.G. Smart and J.M. Ottino, Evolving loop structure in gradually tilted two-dimensional granular packings, Phys. Rev. E., 77(4), 041307, 2008 
 
R. Sturman, S.W. Meier, J.M. Ottino, and S. Wiggins, Linked twist map formalism in two and three dimensions applied to mixing in tumbled granular flows, J. Fluid Mech., 602, 129-174 (2008). (Cover article).

P. Chen, J.M. Ottino, Rich Lueptow, Subsurface granular flow in rotating tumblers: A detailed computational study, Phys. Rev. E., 78, 021303 (2008).

A.G. Smart, L.A.N. Amaral and J.M. Ottino. Cascading failure and robustness in metabolic networks, Proceedings of the National Academic of Sciences, 2008, to appear.

G. Juarez, J.M. Ottino, and R.M. Lueptow, Axial band scaling for bidisperse mixtures in granular tumblers, Phys. Rev. E., 78(3), 031306 (2008).

A.G. Smart and J.M. Ottino. Granular matter and networks: Three Recent Examples, SOFT MATTER, 4(11) 2125-2131, 2008

Books

J.M. Ottino, The Kinematics of Mixing: Stretching, Chaos, and Transport, Cambridge University Press, Cambridge, England 1989 (xiv, 364 pp., illus., + plates), reprinted 1990, 1997; 2004.

R. Sturman, J.M. Ottino, and S. Wiggins, Mathematical Foundations of Mixing: The Linked Twist Map as a Paradigm in Applications – Micro to Macro, Fluids to Solids, Cambridge University Press, Cambridge, England, 2006

R. Sturman, J.M. Ottino, and S. Wiggins, Mathematical Foundations of Mixing: The Linked Twist Map as a Paradigm in Applications – Micro to Macro, Fluids to Solids, Cambridge University Press, Cambridge, England, 2006.

Publications in Refereed Journals

*Selections for publications – 3/2/07

J.M. Ottino, Engineering Complex Systems, Nature, 427, 399 (2004).

L.A.N. Amaral and J.M. Ottino, Complex Networks: Completing the framework for the study of complex systems, European Physics Journal, 38, 47-162 (2004).

S.J. Fiedor and J.M. Ottino, Mixing and segregation of granular matter: multi-lobe formation in time-periodic flows , J. Fluid Mech., 533, 223-236, (2005). N.A. Pohlman, S.W Meier, R.M. Lueptow, and J.M. Ottino, Surface Velocity in Three-Dimensional Granular Tumblers, J. Fluid Mech. 560, 355 – 368, (2006).

N.A. Pohlman, J.M. Ottino and R.M. Lueptow, End-wall effects in granular tumblers: From quasi-two-dimensional flow to three-dimensional flow," Physical Review E (Vol. 74, No. 3): Phys. Rev. E 74, 031305 (2006) T. Arndt, A. Brucks, J.M. Ottino, and R.M Lueptow, Creeping granular motion under variable gravity levels, Phys, Rev, E.74(3), Art. No 031307, Part 1, Sept. 2006.

Perspectives and Essays

Read the Dean's Commentary: Fostering Creativity Key to Tech Leadership

J.M. Ottino, New tools, New outlooks, new opportunities, AIChE Journal, 51(7), 1840-1845 (2005).

W.L. Kath and J.M. Ottino, Rhythm engineering, Science, 316, 1857-1858 (2007).

J.M. Ottino and R.M. Lueptow, On mixing and demixing, Science, 312, 912-913 (2008).

J.M. Ottino, Engineering Complex Systems, Nature, 427, 399 (2004).

J.M. Ottino and S. Wiggins, Designing Optimal Micromixers, Science, 305, 485-486 (2004).

Book Reviews

Building on failure Success Through Failure: The Paradox of Design by Henry Petroski Princeton University Press: 2006. 240 pp. Nature, 441, 407, May 25 (2006).

Contributed and Invited Edited Books, Book Chapters and Proceedings

JM. Ottino andS. Wiggins, co-editors. Transport and Mixing at the Microscale, special issue Philosophical Transactions of the Royal Society (2004).

J.M. Ottino, Mixing: Updates in McGraw-Hill Encyclopedia of Science and Technology, AccessScience@McGraw-Hill, htpp://www.accessscience.com (2006)

Professional Honors and Awards

• 2006 Dean’s Distinguished Lecture, College of Engineering and Mathematical Sciences, University of Vermont
• 2006 Reilly Lectures University of Notre Dame
• 2003 Member American Academy of Arts and Sciences
• 2003 Robb Distinguished Lecture in Chemical Engineering Science, Penn State University
• 2002 Ernest W. Thiele Award (AIChE, Chicago section)
• 2001 William H. Walker Award, American Institute of Chemical Engineers
• 2001 John S. Guggenheim Fellowship
• 2001 Paul J. Flory Lecturer, Stanford University
• 1999 Danckwerts Memorial Lecture, London, England
• 1997 Member, National Academy of Engineering
• 1996 Fellow, American Association for the Advancement of Science
• 1996 Sigma Xi Distinguished Lecturer (1997-1999)
• 1996 SON Lecture (Foundation for Chemical Research, The Netherlands)
• 1994 Alpha Chi Sigma Award, American Institute of Chemical Engineers
• 1994 William N. Lacey Lectureship in Chemical Engineering, California Institute of Technology
• 1994 College of Engineering Centennial Speaker, University of Maryland
• 1993 Fellow, American Physical Society, Division of Fluid Mechanics
• 1991 Fifth Stanley Corrsin Lectureship in Fluid Mechanics, The Johns Hopkins University
• 1989 Merck Sharp & Dohme Lecturer, University of Puerto Rico
• 1989 Finalist Scientific Prize, Art for Science, LV-MH, Paris, France
• 1988 University Fellow, University of Massachusetts
• 1987 Allan P. Colburn Memorial Lectureship, Department of Chemical Engineering, University of Delaware
• 1984 Presidential Young Investigator Award (NSF)
• 1982 Outstanding Junior Faculty Scholar Award (University of Massachusetts)

Prof. Julio M. Ottino
Department of Chemical and Biological Engineering
Northwestern University
2145 Sheridan Road
Evanston, IL 60208-3120

tel: 847/491-3558
fax: 847/491-3728
E-mail Professor Ottino