Engineering Chemical
Resume:
Darrell Velegol
Department of Chemical Engineering
Penn State University
University Park PA 16802, USA
Phone: 814-***-****, email *******@***.***, web www.velegol.org
Professional Preparation
West Virginia University BS Chemical Engineering 1988-1992
University of Melbourne (Australia) NSF PhD enhancement (Maths) 1996
Carnegie Mellon University PhD Chemical Engineering 1993-1997
Carnegie Mellon University post-doc (Microscopy & Cell Bio) 1997-1999
Appointments
Professor Penn State University 2009-present
Associate Professor Penn State University 2005-2009
Assistant Professor Penn State University 1999-2005
Summer Design Intern The Chester Engineers 1989
Selected Publications
Hong, Yiying; Velegol, Darrell; Chaturvedi, Neetu; Sen, Ayusman. Biomimetic behavior of
synthetic particles: from microscopic randomness to macroscopic control. Physical
Chemistry Chemical Physics, 12, 1423-1435 (2010). Invited Perspective article.
Chaturvedi, Neetu; Hong, Yiying; Sen, Ayusman; Velegol, Darrell, Magnetic Enhancement of
Phototaxing Catalytic Motors, ASAP article in Langmuir (2010).
Snyder, Charles E.; Ong, Melissa; Velegol, Darrell. In Solution Assembly of Colloidal
Water. Soft Matter, 5, 1263-1268 (2009).
McDermott, Joseph J.; Velegol, Darrell. Simple Fabrication of Metallic Colloidal
Doublets Having Electrical Connectivity. Langmuir, 24, 4335-4339 (2008).
Hong, Yiying; Blackman, Nicole M.K.; Kopp, Nathaniel D.; Velegol, Darrell; Sen, Ayusman.
Chemotaxis of Non-Biological Nanorods. Physical Review Letters, 99, 178103 (p 1-4)
(2007). See Highlight in Nature, 450, 5 (2007).
Velegol, Darrell; Jerri, Huda A.; McDermott, Joseph J.; Chaturvedi, Neetu. Micro-
factories for Colloidal Assemblies, AIChE Journal, accepted 2010. This is an invited
Perspective.
Velegol, Darrell; Shori, Shailesh; Snyder, Charles E. Rayleigh-Benard Instability in
Sedimentation. Industrial & Engineering Chemistry Research, 48, 2414-2421 (2009). Invited
paper to special issue honoring Professor John L. Anderson.
Velegol, Darrell. Assembling colloidal devices by controlling interparticle forces,
Journal of Nanophotonics, 1, 012502 (p 1-25) (2007). Invited review article.
Velegol, Darrell; Holtzer, Gretchen L.; Radovi -Moreno, Aleksandar F.; Cuppett, Joshua D.
Force Measurements between Sub-100 nm Colloidal Particles. Langmuir, 23, 1275-1280 (2007).
Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Lucas, Amand A. Van
der Waals forces between dielectric nanoclusters. Langmuir, 23, 1735-1740 (2007).
Honors & Awards
Alpha Chi Sigma Outstanding Professor Award, Penn State University, 2003, 2009
Victor K. LaMer Award, American Chemical Society Colloids & Surfaces Division, June 1998
National Science Foundation PhD Fellow, August 1992 - July 1995
DuPont PhD Fellow, August 1992 - July 1996
Rhodes Scholar Finalist (District II), December 1991
Truman Scholar Alternate, March 1990
West Virginia University Foundation Scholar, August 1988 - May 1992
Professional Affiliations
American Association for the Advancement of Science (AAAS), 1994 present
American Chemical Society (ACS), 1994 present
American Institute of Chemical Engineers (AIChE), 1989 present
American Society for Engineering Education (ASEE), 1999 present
Synergistic Activities
Undergraduate research. Have mentored 44 undergrad students in my research lab (including
7 Habits workshop. Interactive workshop (based on Stephen Covey s best-selling book) that
helps students learn about their life plan, scheduling time, teamwork, and self-
improvement.
molecular and colloids courses. Developed ChE 528 grad course Colloids and
Nanocolloids, taught to dozens of students from various departments; co-developed
developed Chem 497A Physical Chemistry that includes introductory statistical mechanics
and molecular-level migration concepts.
Collaborators & Other Affiliations
Thesis/post-doc advisors. John L. Anderson (President, Illinois Institute Tech), Stephen
Garoff (Physics, CMU), post-doc Frederick Lanni (Biology, CMU)
Outside collaborators (last 5 years). Silvina Gatica (Physics, Howard), Michael J. Pishko
(Chemical Engineering, Texas A&M), Amand Lucas (Belgium).
Current graduate students (6 at Penn State ChE). Huda Jerri (PhD Spring 2010), Joe
McDermott (PhD Fall 2011), Neetu Chaturvedi (PhD Fall 2011), Laura Ramirez (PhD Spring
2012), Cesar Gonzalez Serrano (MS Spring 2011), Tso-Yi Chiang (PhD Spring 2012).
Current post-docs. 1 to start Apr 2010.
Previous graduate students (12). Jason D. Feick (PhD 2002, post-doc 2003, E Ink), Aron
Parekh (PhD 2003, Vanderbilt University Medical School), Michael Salerno (PhD 2005, Camp,
Dresser, & McKee), Gretchen L. Holtzer (PhD 2005, ExxonMobil), Joseph F. Jones (PhD 2005,
Center for Naval Analysis), Mary L. Parent (PhD 2007, Lexmark), Allison Yake (PhD 2007,
DuPont), Charles E. Snyder (PhD 2008, Institute for Defense Analysis), Prasanna K. Thwar
(MS 2001, PhD Michigan, Advanced Liquid Logic), Martin Gentile (MS 2004, Pfizer), Nicole
Blackman (MS 2007, Corning), Shailesh Shori (MS 2008, U South Carolina).
Previous post-docs (5). Jason D. Feick (Chemical Engineering, 2003, now at E Ink), Aron
Parekh (2004, now at Vanderbilt University Medical School), Mercedes Calbi (Physics, joint
with Milton Cole 2002, now at U Southern Illinois), Silvina Gatica (Physics, joint with
Milton Cole 2004, Howard University), Hye-Young Kim (Physics, joint with Milton Cole 2005-
7, Assistant Professor of Physics and Chemistry at Southeastern Louisiana University)
Penn State collaborators (last 5 years). Milton Cole (Physics), Kristen Fichthorn
(Chemical Engineering), Ayusman Sen (Chemistry), Thomas Mallouk (Chemistry), Christine
Keating (Chemistry), Theresa Mayer (Electrical Engineering), Selia Maximova
(Horticulture), Mark Guiltinan (Horticulture).
Research: Fabrication of Colloidal Devices
Our lab group fabricates colloidal assemblies, from roughly 100 nanometers to 10
micrometers in size, for technologies in solar energy, microbots, and reagent delivery.
Our particle lithography and salting out / quenching / fusing techniques are examples
of ways we manipulate forces between the particles, so that the small particles know how
to piece themselves together . The research requires fundamental studies in colloidal
forces, electrokinetic modeling, and instabilities in sedimentation operations. Our lab
group combines experiments (e.g., video microscopy, Nanofabrication, synthesis), numerics
(e.g., Brownian dynamics simulations, eigenmode problems), and theory (e.g.,
hydrodynamics, electrokinetics, quantum physics). Our primary research expertise includes:
colloidal fabrication. By placing site-specific chemistry on individual colloidal
particles using our particle lithography method, we are working toward building
colloidal machines and devices and patterned particles. Significant applications include
reagent delivery, colloidal photovoltaics, and microbots.
interparticle forces. We have developed the coupled dipole method to calculate van der
Waals forces between nanocolloids, to improve upon the Lifshitz theory (which is not
applicable for nanocolloids, for several reasons). Then we use our technique of
differential electrophoresis to measure interparticle forces, for particles as small as
85 nm. The vision is to design nanocolloids that remain stable without dispersants.
sorting. Sedimentation separations by gravity or centrifugation must be done in density
gradients, and even then are subject to a classic Rayleigh-Benard instability. We are
defining the limits of current sedimentation processes, and developing new technologies
that work better.
charge nonuniformity. We have developed the technique of rotational electrophoresis to
measure particle charge nonuniformity for the first time, showing that particles that have
long been thought to be uniformly-charged, are in fact not. This has important
ramifications for colloidal forces stability.
Darrell Velegol attended West Virginia University for his BS in Chemical Engineering, and
he earned his PhD in Chemical Engineering at Carnegie Mellon University in 1997 working
with Professors John L. Anderson and Stephen Garoff. In 1998 Velegol won the Victor K.
LaMer Award of the American Chemical Society for the best PhD in the field of Colloid &
Surface Science. He continued with a post-doc in the Center for Light Microscope Imaging
and Biotechnology at Carnegie Mellon, working under Professor Fred Lanni of the Biology
Department. In June 1999 Velegol joined the Department of Chemical Engineering at Penn
State, where he was promoted to Associate Professor in 2005. Velegol won an NSF CAREER
Award in 2000, and in 2003 he led a group in winning an NSF NIRT grant on bottom-up
particle assembly. Currently he works with 6 graduate students and numerous undergrad
researchers. His research investigates the fabrication of colloidal assemblies and
devices, with a specialty in understanding the interparticle forces and sorting processes.
His research group uses a wide range of experimental and modeling approaches. Velegol is a
member of ACS, AIChE, AAAS, and ASEE. More recently, he has engaged in studying the
physics of community, pursuing questions in learning, creativity, motivation, trust and
deceit, courage, and other social science ideas using results from physics, chemistry,
biology, and chemical engineering. He is applying this research to Wild Scholars, which
aims to have an impact on grades 7-12 education throughout Pennsylvania and beyond. In
2009 Velegol was promoted to Full Professor at Penn State.
Patents
Velegol, Darrell; Feick, Jason D.; Yake, Allison M.; Snyder, Charles. Particle
lithography method and ordered structures prepared thereby. U.S Patent application PST-
14302/36 (2005).
Velegol, Darrell; Yake, Allison M. Particle doublets and n-mers and methods for
fabrication thereof. U.S. Patent application PST-22518 (2006).
Publications (full list)
Velegol, Darrell; Anderson, John L.; Garoff, Stephen. Probing the Structure of Colloidal
Doublets by Electrophoretic Rotation. Langmuir, 12, 675-685 (1996).
Shaeiwitz, Joseph A.; Whiting, Wallace B.; Velegol, Darrell. A Large-Group Senior Design
Experience: Teaching Responsibility and Life-Long Learning. Chemical Engineering
Education, 30, 70-75 (1996).
Velegol, Darrell; Anderson, John L.; Garoff, Stephen. Determining the Forces between
Polystyrene Latex Spheres Using Differential Electrophoresis. Langmuir, 12, 4103-4110
(1996).
Solomentsev, Yuri; Velegol, Darrell; Anderson, John L. Conduction in the Small Gap
between Two Spheres. Physics of Fluids, 9, 1209-1217 (1997).
-24521 (2006).
Velegol, Darrell; Holtzer, Gretchen L.; Radovi -Moreno, Aleksandar F.; Cuppett, Joshua D.
Force Measurements between Sub-100 nm Colloidal Particles. Langmuir, 23, 1275-1280 (2007).
Kim, Hye-Young; Sofo, Jorge O.; Velegol, Darrell; Cole, Milton W.; Lucas, Amand A. Van
der Waals forces between dielectric nanoclusters. Langmuir, 23, 1735-1740 (2007).
Parekh, Aron; Velegol, Darrell. Collagen Gel Anisotropy Measured by 2-D Laser Trap
Microrheometry. Annals of Biomedical Engineering, 35, 1231-1246 (2007).
Yake, Allison M.; Zahr, Alisar S.; Jerri, Huda A.; Pishko, Michael V.; Velegol, Darrell.
Localized Functionalization of Individual Colloidal Carriers for Cell Targeting and
Imaging. Biomacromolecules, 8, 1958-1965 (2007).
Velegol, Darrell. Assembling colloidal devices by controlling interparticle forces,
Journal of Nanophotonics, 1, 012502 (p 1-25) (2007). Invited review article. [DOI:
10.1117/1.2759184].
Yake, Allison M.; Snyder, Charles E.; Velegol, Darrell. Site-Specific Functionalization
on Individual Colloids: Size Control, Stability and Multi-Layers. Langmuir, 23, 9069-9075
(2007).
Hong, Yiying; Blackman, Nicole M.K.; Kopp, Nathaniel D.; Velegol, Darrell; Sen, Ayusman.
Chemotaxis of Non-Biological Nanorods. Physical Review Letters, 99, 178103 (p 1-4)
(2007). See Highlight Nano Steams Ahead in Nature, 450, 5 (2007). "Tiny rods steer
themselves" at http://physicsworld.com/cws/article/news/31730 and
http://nanotechweb.org/cws/article/tech/ 31740;jsessionid=2B7509820E5AA2DBDE155798D3F075BC
(8nov2007); "Nano steams ahead"
http://www.nature.com/nature/journal/v450/n7166/pdf/450005a.pdf.
Velegol, Darrell. Fabrication of high-value particle assemblies, Rubber & Plastic News,
37, 14-15 (26 November 2007). Invited article.
Parent, Mary E.; Snyder, Charles E.; Kopp, Nathaniel; Velegol, Darrell. Localized Quorum
Sensing in Vibrio fischeri. Colloids Surfaces B, 62, 180-187 (2008).
McDermott, Joseph J.; Velegol, Darrell. Simple Fabrication of Metallic Colloidal
Doublets Having Electrical Connectivity. Langmuir, 24, 4335-4339 (2008).
Cole, Milton W.; Velegol, Darrell. Van der Waals Energy of a 1-Dimensional Lattice.
Molecular Physics, 106, 1587-1596 (2008).
Chaturvedi, Neetu; Jerri, Huda; Velegol, Darrell. Design and characterization of
randomly-speckled spheres. Langmuir, 24, 7618 7622 ( 2008).
Jerri, Huda; Dutter, Rachel; Velegol, Darrell. Fabrication of Stable Anisotropic
Microcapsules. Soft Matter, 5, 827-834 (2009).
Snyder, Charles E.; Ong, Melissa; Velegol, Darrell. In Solution Assembly of Colloidal
Water. Soft Matter, 5, 1263-1268 (2009). [DOI: 10.1039/b810882j]
Velegol, Darrell; Shori, Shailesh; Snyder, Charles E. Rayleigh-Benard Instability in
Sedimentation. Industrial & Engineering Chemistry Research, 48, 2414-2421 (2009). [DOI:
10.1021/ie800720k]. Invited paper to special issue honoring Professor John L. Anderson.
Cole, Milton W.; Velegol, Darrell; Kim, Hye-Young; Lucas, Amand A. Nanoscale van der
Waals Interactions, Molecular Simulation, 35, 849-866 (2009). Invited review article.
Nel, Andre E.; Madler, Lutz; Velegol, Darrell; Xia, Tian; Hoek, Eric M.; Somasundaran,
Ponisseril; Klaessig, Fred; Castranova, Vince; Thompson, Mike. Bio-physicochemical
interactions at the nano-bio interface: implications for biological use and safety
assessment of engineered nanoparticles. Nature Materials, 8, 543-557 123 (2009).
Sen, Ayusman; Ibele, Michael; Hong, Yiying; Velegol, Darrell. Chemo and Phototactic
Nano/Microbots, Faraday Discussions, 143, 1-13 (2009).
Hong, Yiying; Velegol, Darrell; Chaturvedi, Neetu; Sen, Ayusman. Biomimetic behavior of
synthetic particles: from microscopic randomness to macroscopic control. Physical
Chemistry Chemical Physics, 12, 1423-1435 (2010). Invited Perspective article.
Jerri, Huda A.; Sheehan, William P.; Snyder, Charles E.; Velegol, Darrell. Prolonging
Density Gradient Stability, ASAP article in Langmuir (2010).
Chaturvedi, Neetu; Hong, Yiying; Sen, Ayusman; Velegol, Darrell, Magnetic Enhancement of
Phototaxing Catalytic Motors, ASAP article in Langmuir (2010).
Ramirez, Laura Mely; Milner, Scott T.; Snyder, Charles E.; Colby, Ralph H.; Velegol,
Darrell. Controlled Flats on Spherical Polymer Colloids, ASAP article in Langmuir
(2010).
Velegol, Darrell; Jerri, Huda A.; McDermott, Joseph J.; Chaturvedi, Neetu. Micro-
factories for Colloidal Assemblies, AIChE Journal, 56, 564-569 (2010). This is an invited
Perspective.
Current grants
Building colloidal assemblies via site-specific bonding regions. National Science
Foundation CBET Grant # 0651611, $240 000 (1 Apr 2007 to 31 Mar 2010). PI: Darrell Velegol
(100%). Velegol = 0.0 month Summer. This grant ends in Mar 2010.
Nanocolloidal forces for stability or assembly. Department of Energy Basic Energy
Sciences Grant # DE-FG02-07ER46414 ($789,366, 15 Aug 2007 14 Aug 2010). PIs: Darrell
Velegol (33%), Milton Cole, Kristen Fichthorn. Velegol = 1.0 month Summer. This grant ends
in Mar 2010.
Colloidal Polymer Chains: Construction, Statics and Dynamics, National Science
Foundation CBET Grant #0730780 (April 2007 to March 2010, $240,000). PI Ralph Colby (50%),
co-PI Darrell Velegol (50%). Velegol = 0.5 month Summer. This grant ends in Mar 2010.
Previous grants completed
Measuring the Effect of Nanoscale Charge Nonuniformity on Colloidal Forces, National
Science Foundation CAREER Grant # CTS-9984443, $234 000 (March 2000 February 2004).
Charge Nonuniformity and the Stability of Particles in Nonaqueous Colloidal
Dispersions, Petroleum Research Fund type G Grant # 35400-G9, $25 000 (September 2000
August 2002).
Molecular Level Analysis of Macromolecule-Surface Interactions in Bacterial Adhesion.
National Science Foundation CRAEMS Program, CH3-0089156, $2,512,000 (September 2000
August 2005). (PIs: Bruce Logan, Darrell Velegol, John Chorover, Menacham Elimelech, James
Kubicki).
Green Engineering of Dispersed Nanoparticles: Measuring and Modeling Nanoparticle
Forces. Environmental Protection Agency STAR Grant # R-82960501, $370 000 (January 2002
December 2004). (PIs: Darrell Velegol and Kristen A. Fichthorn)
Center of Excellence in Nanoparticulate Science and Engineering. to Ben Franklin
Technology Center, $80 000 (1 July 2002 30 Jun 2003) (PIs: James H. Adair, Darrell
Velegol).
Bottom Up Assembly of Metal and Semiconductor Nanowires: Fundamental Forces to
Nanoelectronic Circuits, National Science Foundation NIRT Grant #CCR-0303976, $1 000 000
(15 Aug 2003 31 Jul 2008). (PI: Darrell Velegol, co-PIs: Kristen A. Fichthorn, Theresa
Mayer, Christine D. Keating)
Center of Excellence in Nanoparticulate Science and Engineering. to Ben Franklin
Technology Center, $80 000 (1 July 2003 30 Jun 2004) (PIs: James H. Adair, Darrell
Velegol).
NER: Nanoparticle stability by quantum design of van der Waals forces. National
Science Foundation NER grant CTS-0403646, $130 000 (1 Jul 2004 30 Jun 2005). PIs:
Darrell Velegol and Milton W. Cole.
Center of Excellence in Nanoparticulate Science and Engineering. to Ben Franklin
Technology Center, $80 000 (1 July 2004 30 Jun 2005) (PIs: James H. Adair, Darrell
Velegol).
Site-specific chemistry on colloidal particles by particle lithography . Petroleum
Research Fund Grant # 43453-AC10, $80 000 (September 2005 August 2007).
Atomic-Scale Simulation of Many-Body Forces in Colloidal Nanoparticle Suspensions.
Petroleum Research Fund ($90 000, 1 Sep 2007 to 31 Aug 2009). PI: Kristen A. Fichthorn, co
PIs: Darrell Velegol and Milton Cole.
( 4 Petroleum Research Fund SE (travel) grants, many National Science Foundation Research
Experience for Undergrads grants.
Equipment & Facilities
safety. Fume hoods (including a biological laminar flow hood), water showers, eye wash,
fire extinguisher, lab aprons, standard goggles, laser goggles, gloves.
space. 1500 ft2 lab space.
video microscopy. two microscopes: Nikon TE2000 and Nikon TE 300. Both are inverted
microscopes with various objectives (4x - 100x, including a water immersion objective) and
fluorescence equipment, Prior motorized stages (200 nm resolution), Cohu 4010 CCD camera,
digital image processing software and hardware, Newport vibration isolation tables.
laser trap. 2500 mW NdYag solid state (1064 nm) laser trap. Trap is moveable by scanning
galvanometers.
Wyatt 18 angle static light scattering EOS device.
small angle light scattering. 17 mW laser with full detection, for measuring
interparticle forces and stability.
differential electrophoresis flow cell. Keithley constant current source/measurement
device, peristaltic pump for flow, syringe pump for flow, platinum electrodes.
rheometer. Rheometrics RFS3 controlled strain rheometer.
latex reactor. In-house assembly for manufacturing polymer colloids.
incubators. Floor incubator, Focht stage incubator for microscope, bacterial controlled
temperature shaker
computation. 4 computers, for word processing to numerical calculations.
standard equipment. Millipore water purification, stirring/heating plates, syringe pump,
water baths, electronic balances, Pipetmen, centrifuge, refrigerators, glassware.
UV-vis spectrophotometer.
bacterial growth equipment (autoclave, deep freeze, supplies).
on campus shared user facilities (open access): FESEM, TEM, confocal microscopy, cell
counting, ZetaPALS, Nanofab (electron beam lithography, photolithography.
Invited Presentations
Sorting mixtures of colloidal particles, Illinois Institute of Technology, November
2009.
Chemotaxis of Non-Biological Particles, University of Pennsylvania, October 2009.
Sedimentation separation of colloidal particles, Tulane University, September 2009.
Multi-Body Van Der Waals Forces, American Chemical Society Colloids and Surface Science
Symposium, Columbia University, June 2009.
Sedimentation separation of colloidal particles, Penn State University, April 2009.
7 Steps to Fabricating a Colloidal Machine. 21st International Symposium on Polymer
Analysis and Characterization (ISPAC), University of Delaware, June 2008.
Phototaxis of nonbiological rods. Penn State MRSEC, May 2008.
Colloidal Fabrication Using Site-Specific Interparticle Forces. Gordon Research
Conference on Colloidal, Macromolecular, and Polyelectrolyte Science, Ventura CA, February
2008.
The fabrication of colloidal assemblies. Department of Chemical Engineering, Texas A&M
University, October 2007.
Forces between nanocolloids. California Nanosystems Institute (CNSI) at UCLA, for
workshop on Bio-physicochemical interactions of engineered nanomaterials, September
2007.
The fabrication of colloidal assemblies. Department of Chemical Engineering, University
of Virginia, September 2007.
Designing processes for fabricating colloidal assemblies. Department of Chemical
Engineering, University of Louisville (KY), April 2007.
Designing processes for fabricating colloidal assemblies. Department of Chemical
Engineering, Carnegie Mellon University, April 2007.
Designing processes for fabricating colloidal assemblies. Department of Chemical
Engineering, University of Puerto Rico (Mayaguez), February 2007.
Fabrication of well-controlled particle assemblies. Engineering Science & Mechanics,
Penn State University, October 2006.
Colloidal molecules: fabrication and engineering design. Department of Chemical
Engineering, City College of New York, October 2006.
Patterning on individual colloidal particles using the particle lithography process.
American Chemical Society (PDSM division), San Francisco, September 2006.
Colloidal molecules: fabrication and engineering design. Procter & Gamble, Cincinnati
OH, August 2006.
Colloidal molecules: fabrication and engineering design. American Chemical Society
Colloids and Surface Science Symposium, University of Colorado (Boulder), June 2006.
Colloidal atoms and molecules: design and fabrication. 38th American Chemical Society
Central Regional Meeting, Frankenmuth MI, May 2006.
Nanoscale charge nonuniformity on polymer colloid latexes. Dow Chemical, Midland MI,
May 2006.
Colloidal atoms and molecules: Fabrication and engineering design. World Congress on
Particle Technology (Orlando FL), April 2006.
Colloidal molecules: Synthesis and engineering design. Materials Science Department,
University of New Hampshire, April 2006.
Colloidal molecules : Synthesis and engineering design. Rohm & Haas (Spring House PA),
January 2006.
Measuring charge nonuniformity on colloidal particles. American Institute of Chemical
Engineers Annual Meeting, Cincinnati, November 2005. [Velegol, Paul McKenzie, and John
Walz organized this invited session for John L. Anderson s 60th birthday.]
Colloidal molecules : Synthesis and engineering design. University of Florida
(Gainesville), October 2005.
Nanoscale charge nonuniformity on latex particles. Gordon Conference on Polymer
Colloids, Tilton NH, July 2005.
Processing analysis for colloidal molecules. General Electric Plastics, Mt. Vernon IN,
Jun 2005.
Engineering forces between nanocolloids. American Chemical Society Colloids and Surface
Science Symposium, Clarkson University, June 2005.
A story of colloidal molecules . Food Science Department, Penn State University,
February 2005.
Charge nonuniformity on individual particles: characterization, consequences, and
control. Materials Science Department, University of Illinois (Urbana-Champaign),
November 2003.
Nanoscale charge nonuniformity and its effects on interparticle forces. International
Conference on Surface and Colloid Science (IACIS), Brazil, September 2003.
Changing the World with the 7 Habits. Department of Chemical Engineering, Bucknell
University, January 2003.
Molecular engineering of colloidal forces. Department of Physics, Penn State
University, October 2002.
Measuring and modeling nanoparticle forces. EPA Nanotechnology Grantees Conference,
Environmental Protection Agency, Washington DC (Aug 2002).
Does nanoscale charge nonuniformity control bulk colloidal behavior, Department of
Chemical Engineering, West Virginia University, January 2001.
Does nanoscale charge nonuniformity control bulk colloidal behavior, Department of
Chemical Engineering, University of Colorado, December 2000.
Does nanoscale charge nonuniformity control bulk colloidal behavior, Department of
Chemical Engineering, Johns Hopkins University, October 2000.
Does nanoscale charge nonuniformity control bulk colloidal behavior, Department of
Chemical Engineering, University of Michigan, September 2000.
How Does Charge Nonuniformity on Colloidal Particles Affect Bulk Behavior, Innovations
Workshop, Particulates Materials Center, Penn State University, May 2000.
Particle Dispersion and Rheology in Aqueous Media, Chemicals and Polymers Roundtable,
Air Products and Chemicals Incorporated, April 2000.
How Does Charge Nonuniformity on Colloidal Particles Affect Bulk Behavior, National
Meeting of the American Chemical Society, San Francisco, March 2000.
Determing Cell Traction Forces of Fibroblasts on Collagen Gels, Bioengineering
Department, Penn State University, January 2000.
Understanding Bulk Colloidal Behavior from Interparticle Forces, Department of Chemical
Engineering, Yale University, January 2000.
Surprising Measurements of the Forces between Colloidal Particles, Particulates
Materials Center, Penn State University, June 1999.
Determining Cell Traction Forces of Fibroblasts on Collagen Gels, Department of
Mathematics, University of Melbourne; Chemistry Department, University of Newcastle, March
1999.
Measuring the Colloidal Forces between Two Brownian Particles, Advanced Mineral
Products Center (AMPC), University of Melbourne, March 1999.
Determining the Forces between Colloidal Spheres Using Differential Electrophoresis,
1998 Victor K. La Mer Award Lecture, American Chemical Society Colloids and Surfaces
Science Symposium, The Pennsylvania State University (State College), June 1998.
The Colloidal Forces between Polystyrene Latex Particles in Suspension, Ian Wark
Research Institute, University of South Australia (The Levels, Australia), April 1996.
Determining the Forces between Colloidal Spheres Using Differential Electrophoresis,
Advanced Mineral Products Center (AMPC), University of Melbourne, January 1996.
Determining the Forces between Colloidal Spheres Using Electrophoresis, Condensed
Matter Physics Group (Department of Physics), Carnegie Mellon University, October 1995.
Other conference papers presented by Velegol (many others by students/post-docs)
Sorting Colloidal Particles: Thermodynamics or transport which wins American
Institute of Chemical Engineers Annual Meeting, Nashville, November 2009. (co authors
Cesar Gonzalez Serrano, Joe McDermott, Kristi Weggener, Tawanna Hines)
Fabricating colloidal assemblies that undergo chemotaxis and phototaxis, American
Chemical Society National Meeting, Washington DC, August 2009.
Differences Between 2-Body and Multi-Body Van Der Waals Forces, American Institute of
Chemical Engineers Annual Meeting, Philadelphia, November 2008. (co author Milton Cole)
Rayleigh-Benard Instability in Sedimentation, American Chemical Society Colloids and
Surface Science Symposium, North Carolina State University, June 2008. (with coauthors
Huda Jerri, Charles Snyder, and Shailesh Shori)
Controlling interparticle forces to guide colloidal assembly, National Meeting of the
American Chemical Society, Chicago, March 2007. (presented by Velegol).
Catalytic nanomotor modeling. American Institute of Chemical Engineers Annual Meeting,
San Francisco, November 2006. (coauthors Tim Kline, Paul Lammert, Ayusman Sen, Thomas
Mallouk)
Modeling nanocolloidal van der Waals dispersion forces. American Institute of Chemical
Engineers Annual Meeting, San Francisco, November 2006. (co authors Hye-Young Kim, Jorge
Sofo, Milton Cole, Amand Lucas)
Van der Waals forces between nanocolloids. American Chemical Society Colloids and
Courses taught: ChE 320 (Equilibrium thermodynamics), ChE 350 (Heat Transfer), ChE 407
(Senior Unit Operations Lab), ChE 451 (Process Control), ChE 528 (Colloids and
Nanocolloids), Chem 497A (now Chem 466, Molecular Thermodynamics).
Chem 497A (now Chem 466): Molecular Thermodynamics. This course introduces Chemical
Engineering undergrads to molecular thinking and how atomic and molecular phenomena lead
to macroscopic consequences. Using statistical thermodynamics, lattice models, and other
dynamics equations, the students see how quantum mechanics, Brownian motion, and
transition state theory lead to measurable parameters like heat capacity, conductivity,
diffusion coefficients, and reaction rate constants.
ChE 528: Colloids and Nanocolloids. This course introduces students to essential theory
in colloidal synthesis, hydrodynamics, interparticle forces, stability, rheology,
characterization, and assembly. We use physics ranging from quantum to continuum, and
various chemistry sources.
ChE 497a: Physics of Community. Based on independent study since 1991, unrelated to his
colloids research efforts, Velegol taught this course about designing communities,
learning, motivation, trust, courage, creativity and other human aspects.
ChE 597a: Electrochemical Engineering. This course was co-taught with Mike Janik, and it
is a new course in our department.
Major committee work at Penn State
College of Engineering Sabbatical Leave Committee, 2009-2010
Chemical Engineering Undergraduate Program Coordinator, 2009 present
Schreyer Honors College, Faculty Advisory Committee, 2009 present
Schreyer Honors College, Faculty Selection Committee, 2009-present
College of Engineering Research Symposium, Judge 2009
Penn State Goldwater Selection Committee, January 2009
Faculty Committee for Engaged Scholarship in Philadelphia, 2008 present
College of Engineering Sabbatical Review Committee 2008 (for 2009-2010 sabbaticals)
College of Engineering 5-year Strategic Plan Committee for Health Sciences and Medicine
(2007-2008)
Chemical Engineering ABET Assessment Committee (June 2006 present)
Chemical Engineering Graduate Studies Committee (2005 present)
Chemical Engineering Chaired Professorships Committee (2005 present)
Chemical Engineering Department Head Search Committee (August 2004 2005)
Environmental Education Task Force (November 2003 Dec 2004)
College of Engineering Faculty Council (September 2004 December 2006)
Graduate Studies & Research Sub-Committee (August 2004 December 2006)
Chair of Graduate Studies & Research Committee (August 2005-December 2006)
Environmental Institute Advisory Board (August 2000 present)
Chemical Engineering Faculty Search Committee (August 2000 2001)
Chemical Engineering Grad Recruiting & Admissions, Chair (May 2000 May 2004)
Chemical Engineering Graduate Awards Committee (September 1999 2001)
Penn State organizations
Presidential Leadership Academy Mentor, 2010 present.
Faculty Fellow, Laboratory for Public Scholarship & Democracy, A capacity to sustain,
2008.
Committee for Engaged Scholarship in Philadelphia, 2008 present.
College of Engineering Environmental Institute (Aug 2000 present)
Life Sciences Consortium (May 2000 present)
Particulate Materials Center (Dec 1999 present)
Materials Research Institute (2003 present)
Other service
Urban Sustainability Leadership Academy, Advisory Council (Jan 2010 ).
American Chemical Society Symposium organizer (with Maria Santore), Patchy Particles and
Surfaces, Washington DC, August 2009.
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Selection Chair (Jul 2005 Jul 2008)
Organizer, NSF Nanoscale Grantees Conference, 4-6 December 2006 (roughly 200
participants)
Guest Editor, Colloids & Surfaces A, 5 Oct 2005 edition
Editorial Advisory Board of Langmuir (Jan 2005 present)
American Chemical Society LaMer Award Selection Committee (Jul 2001 Jul 2003)
ACS, Continuing Symposium Chair (Colloids & Surface Science), 2000-2008
American Chemical Society Symposium organizer (with Bruce Logan), Bacterial adhesion,
New Orleans, March 2003.
American Chemical Society Symposium organizer (with Kristen A. Fichthorn), Nanocolloid
forces and stability, New York, September 2003.
American Chemical Society Symposium organizer (with Sharon Glotzer and Mike Solomon),
Colloidal atoms and Molecules, Chicago, 24-25 March 2007.
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