Jonathan W. Bender - Physics

Jonathan W. Bender
NC State University
Department of Physics W (919) 515-1330
Centennial Campus Box 7518 H (919) 468-9000
Raleigh, NC 27695-7518
e-mail: jwbender@unity.ncsu.edu
OBJECTIVE
A tenure-track position with a university which focuses on excellence in teaching and research, and which
has an infrastructure which facilitates multidisciplinary and industrial-academic collaboration.
QUALIFICATIONS SUMMARY
Broad and thorough technical expertise gained through nine years of industrial and two years crossdisciplinary
post-doctoral experience. Proven ability to solve complex, multidisciplinary technical
problems, teach, mentor students, and build teams.
Technical experience:
Equipment experience:
• Rheology – structure/property relationships • Atomic force & scanning tunneling microscopy
• Lubrication and tribology • Quartz crystal microbalance techniques
• Surface and colloid science • Ultrahigh vacuum (UHV) systems
• Field-controllable “smart” materials • Rheometers
• Semiconductor LEDs • Light scattering, birefringence, dichroism
• Magnetism and magnetic materials • Neutron scattering
Industrial experience includes technical marketing, proprietary positioning, and joint development
agreements.
EDUCATION
Ph.D. Chemical Engineering, University of Delaware, Newark, DE 1995
"Rheo-optic investigations of the microstructure of model colloidal suspensions"
Advisor: Norman J. Wagner Committee: Eric Kaler, Annette Shine, George Watson
B.S. Chemical Engineering with Distinction, Univ. of Virginia, Charlottesville, VA 1986
“Effect of shear rate on the growth of Absidia Coerulia in a continuous stirred tank reactor”
PROFESSIONAL/ACADEMIC EXPERIENCE
POST-DOC, Dept of Physics, NCSU, Raleigh, NC
2001-present
RESEARCH ASSOCIATE, Analytical Instrumentation Facility, NCSU, Raleigh, NC 2000-2001
STAFF SCIENTIST, Lord Corporation, Cary, NC 1996-1999
FORMULATION SCIENTIST, Exxon Chemical, Linden, NJ 1994-1996
DOCTORAL CANDIDATE, University of Delaware, Newark, DE 1990-1994
PROCESS ENGINEER, Air Products and Chemicals, Inc., Allentown, PA 1986-1990
COLLOID AND SURFACE SCIENCE CONTRIBUTIONS
Nanoscale surface science
• Currently studying nanoscale tribochemistry of organic lubricants on bare metal films using UHV
scanning tunneling microscopy (STM)/quartz crystal microbalance (QCM) techniques.
• Currently constructing a microelectromechanical system (MEMS) friction tester.
• Developed an in-air scanning tunneling microscopy (STM) technique to locate p-n junctions to

Jonathan W. Bender October, 2001 page 2 of 4
nanometer scale resolution in GaN-based semiconductors.
• Developed techniques to selectively etch materials in GaN-based semiconductors using a
photoelectrochemical process.
• Discovered that GaN oxidizes under the strong electric fields present during STM scanning.
Colloidal suspension rheology
• Discovered that electric fields suppress the shear thickening of concentrated suspensions. Received
NSF GOALI funding for continued study.
• Characterized flowing colloidal suspension microstructure using light and neutron scattering to verify
statistical mechanical theories of rheological behavior.
• Developed a new stress-optical relation between optical dichroism and the thermodynamic shear
stress. Paper cited 43 times.
• Experimentally verified the microstructural origins of shear thinning and shear thickening in
concentrated colloidal suspensions. Paper cited 47 times.
Lubricant formulation and tribology
• Clearly demonstrated that rampant oxidative wear led to early magnetorheological (MR) fluid failure in
aggressive energy dissipation environments.
• Investigated metallurgical coatings technologies to provide a high friction, low wear interface for MR
fluid magnetic powders.
• Investigated/identified mechanisms of silicone fluid polymerization in aggressive shearing
environments.
• Conceptualized/designed experiments to relate lubricant frictional and viscometric properties to metal
belt transmission (CVT) noise, oil retention, wear, and torque transfer.
BUSINESS CONTRIBUTIONS
Magnetorheological (MR) fluids
• Solved MR fluid durability problems using alternative metallurgies, increased the life of one emerging
product 10-fold; product generating $300K/year.
• Determined commercial feasibility of a MR-controlled clutch in joint effort with major automotive supplier.
• Showcased MR technology by designing/developing 5 custom machines to evaluate application feasibility
and improve formulations.
• Identified best combination of mechanical design/fluid formulation for seal-less MR devices, invented new
fluid-retentive matrices.
Automotive Transmission Fluids (ATF)
• Reformulated additive package for Ford factory-fill transmission fluid, extended transmission durability
and eliminated shudder. Exxon won $50 million in business.
• Developed new ASTM test for measuring air entrainment in automotive transmission fluids, a common
cause of automotive fires, saving Exxon $150,000/year in failed transmission tests.
Plant Commissioning
• Supervised 50 technicians and operators in the commissioning of 7 new industrial gas and first-of-a-kind
ultra-high purity gas plants (~ $750 million in capital); trained operators, verified safe operability.
• Operated biological waste-water treatment pilot plants.
TEACHING/TRAINING/MENTORING EXPERIENCE
• Lectured NCSU undergraduates in Chemical Engineering Thermodynamics (2001)
• Lectured NCSU doctoral candidates in basic colloid rheology (1999)

• Mentored 3 recent engineering graduates (1997-2000)
• Hired and trained 3 engineering interns (1996-1999)
• Designed two rheology projects for grad students (1996-1998)
• Managed 4 research technicians (1995-1999)
• Teaching Assistant for Statistical Mechanics course (1994)
Jonathan W. Bender October, 2001 page 3 of 4
PATENT "Field-induced shear thickening fluids," J.W. Bender, patent submitted 2000
PUBLICATIONS
J. W. Bender and J. Krim, “Nanotribology: Experimental Techniques and Applications,” in Encyclopedia of
Nanoscience and Nanotechnology, ed. H. Nalwa, in preparation
M. Abdelmaksoud, J. W. Bender, J. Krim, “Nanotribology of a vapor-phase lubricant: A quartz crystal
microbalance study of tricresylphosphate (TCP) uptake on iron and chrome,” in preparation
J. W. Bender and J. Krim, “Applications of the Piezoelectric Quartz Crystal Microbalance to Microdevice
Development,” in Micro- and Nano-Scale Diagnostic Techniques, ed. K. Breuer, submitted (2001)
J. W. Bender and P. E. Russell, “Combined AFM and STM of cross-sectioned GaN LEDs,” submitted to
Scanning (2001)
J. W. Bender, S. S. Shenoy, and N. J. Wagner, “Electric field effects on the shear thickening transition of
concentrated colloidal suspensions,” submitted to Phys. Rev. Lett. (2001)
M. R. Jolly, J. W. Bender, and J. D. Carlson, “Properties and applications of commercial
magnetorheological fluids,” J. Intel. Mat. Sys. T. Str. 10(1) 5-13 (1999)
M. R. Jolly, J. W. Bender, and R. T. Mathers, “Indirect measurements of microstructure development in
magnetorheological fluids,” Int. J. Mod. Phys. B 13(14-16) 2036-2043 (1999)
J. W. Bender and N. J. Wagner, “Reversible shear thickening in monodisperse and bidisperse colloidal
suspensions,” J. Rheol. 40(5) 899-916 (1996)
R. J. Butera, M. S. Wolfe, J. W. Bender, N. J. Wagner, “Formation of a highly ordered colloidal
microstructure upon flow cessation from high shear rates,” Phys. Rev. Lett. 77(10) 2117-2120 (1996)
J. W. Bender and N. J. Wagner, “Optical measurements of the contribution of colloidal forces to the
rheology of concentrated suspensions,” J. Coll. Interf. Sci. 172, 171-184 (1995)
J. W. Bender and N. J. Wagner, “Shear thinning properties of dense suspensions: rheology and flow
dichroism,” MRS Proceedings 1993
PRESENTATIONS
M. Abdelmaksoud, J. W. Bender, and J. Krim, “Nanotribology of a vapor-phase lubricant: A quartz crystal
microbalance study of tricresylphosphate (TCP) uptake on iron and chrome,” AIChE Annual Meeting,
Reno, NV 2001
J. W. Bender and P. E. Russell, “Combined AFM and STM of cross-sectioned GaN LEDs,” AIChE Annual
Meeting, Reno, NV 2001
J. W. Bender, “Insight into mechanical limitations of MR fluid metal particles; a case for hard-casing,”
Annual Technology Review, Lord Corporation 1999
J. W. Bender, “Prospects of the use of water atomized iron particles in MR fluid dampers,” Annual
Technology Review, Lord Corporation 1998
J. W. Bender and N. J. Wagner, “Reversible shear thickening in monodisperse and bidisperse colloidal
suspensions,” 68 th Annual Meeting Society of Rheology, Galveston, TX 1997
J. W. Bender and R. F. Watts, “Technical issues in developing a lubricating fluid for continuously variable

transmissions,” Annual Technology Review, Exxon Chemical 1995
Jonathan W. Bender October, 2001 page 4 of 4
J. W. Bender and N. J. Wagner, "Origin of shear-thickening in concentrated colloidal suspensions," 66th
Annual Meeting of the Society of Rheology, Philadelphia PA 1994
J. W. Bender and N. J. Wagner, "The rheology of TMV/water as a model rod-like colloidal suspension,"
68th ACS Colloidal Surface Science Symposium, Stanford CA 1994
J. W. Bender and N. J. Wagner, "Rheo-optical studies of the dynamics of rod-like colloidal particles under
shear," AIChE Annual Meeting, St. Louis, MO 1993
J. W. Bender and N. J. Wagner, "Experimental measurements of the role of colloidal forces in
concentrated colloidal suspension," 65th Annual Meeting of the Society of Rheology, Boston, MA 1993
J. W. Bender and N. J. Wagner, "Microstructure and shear-thinning rheology of dense suspensions by
light polarization spectroscopy," 67th ACS Colloidal Surface Science Symposium, Toronto, Canada 1993
J. W. Bender and N. J. Wagner, "Rheo-optics of monodispersed, dense colloidal suspensions," AIChE
Annual Meeting, Miami Beach, FL 1992
AWARDS AND PROFESSIONAL ACTIVITIES
Chaired MR and ER Materials session of the Society of Rheology Meeting (1998)
Peer-reviewed four papers submitted to Journal of Rheology (1996-2001)
President, University of Delaware’s Graduate ChE student association (1993-1994)
Member AIChE, ACS, Society of Rheology
Amoco Fellowship, Univ. Delaware (1990-1991)
Laird Fellowship Candidate, Univ. Delaware (1991)
Quality Award, Air Products (1988)
David Lee Preddy Award in ChE, Univ. Virginia (1986)
First place mid-Atlantic AIChE thesis competition (1986)
Dow Outstanding Junior Award in ChE, Univ. Virginia (1985)