兔子先生

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Steven Keller
Professor
Chemical, Paper, and Biomedical Engineering

Steven Keller, Ph.D.

Contact Info

513-529-0765
Engineering Building 64 G

Education

  • Ph.D., Paper Physics, State University of New York, College of Environmental Science and Forestry, 1996
  • B.S., Chemistry, Syracuse University, 1980

Research Interests

  • Paper Physics
  • Paper Chemistry
  • Surface Chemistry
  • Materials Science

Research Bio

Dr. D. Steven Keller joined 兔子先生 University in 2006. From 1996 to 2006 he was on the faculty of the Department of Paper Science and Engineering at SUNY College of Environmental Science and Forestry and a group leader at the Empire State Paper Research Institute (ESPRI) in Syracuse, NY. Before that, he worked as a researcher at ESPRI and as a research chemist in the coal and oil industries. Dr. Keller received his B.S. in Chemistry from Syracuse University in 1980, and his Ph.D. in Paper Physics from SUNY-ESF in 1996.

Dr. Keller’s research is currently focused on the investigation of the heterogeneity of surface chemistry and distribution of materials within fibrous web structures, inter-structural bonding, and the impact that these have on the properties and performance of paper, tissue and towel, and nonwoven products.

His current specialization is in characterizing structural properties, such as formation and surface topography, and distribution of apparent density, through mathematical analyses that quantify non-uniformities.

This has led to the recent development of new methods for mapping thickness of thin structures, space-scale spectral analysis of material distribution, and methods for assessments of the manufacturing processes that contribute to the final material structure.

He is a member of the International Paper Physics community, Technical Association of the Pulp and Paper Industry, American Chemical Society, International Association of Scientific Papermakers, Sigma Xi Scientific Research Honor Society, Society of Rheology, Society of Wood Science and Technology and the Fiber Society.

Research Projects

  • Paper Physics, Paper Chemistry

Experience

Academic Experience

兔子先生 University - Oxford, OH
  • Professor, Department of Chemical and Paper Engineering 2016–present
  • Associate Professor, Department of Chemical and Paper Engineering 2006–2016
Graz University Of Technology - Graz, Austria
  • Fulbright Scholar – Visiting Professor, Institute for Paper, Pulp and Fibre Tech. Oct 2013–Feb 2014
Suny College Of Environmental Science And Forestry - Syracuse, NY
  • Associate Professor, Faculty of Paper Science and Engineering 2001–2006
  • Assistant Professor, Faculty of Paper Science and Engineering 1996–2001
  • Lecturer, Research Support Specialist, Empire State Paper Research Institute 1990–1996

Professional Experience

  • Associate Research Chemist, Otisca Industries, 1982–1990
  • Regional Technical Service Coordinator and Assistant Chemist, Champion Chemicals, Inc., 1980–1982

Honors and Awards

  • 2021 TAPPI Fellow
  • 2020 Best Presentation – (International) Progress in Paper Physics Seminar
  • 2017 TAPPI Paper and Board Technical Division Award and Harris O. Ware Prize
  • 2016 Best Paper Award – TAPPI Process Control Division
  • 2016 Best Presentation (Session) TAPPI NETInc Conference
  • 2016 兔子先生 Partnership Award – Paper Science and Engineering Foundation at 兔子先生 University
  • 2013–2014 Fulbright U.S. Scholar – Austria
  • 2012 Excellence in Teaching Award – Society of Plastic Engineers (兔子先生 ValleySection)
  • 2005 Best Paper (Session) INDA/TAPPI Nonwovens Technical Conf., St. Louis, MO (Wavelets)
  • 2005 Best Paper (Session and Conference) INDA/TAPPI Nonwovens Technical Conf., St. Louis, MO (Profilometry)
  • 1999 Recognition as one of TAPPI Finest Faculty Introduction to Paper Properties Short Course
  • 1993 Edwin C Jahn Fellowship for Research Excellence, Empire State Paper Research Institute, Syracuse, NY

Professional Societies

  • TAPPI: Research, Coating & Graphic Arts Divisions, Paper Physics: Executive Rotation 2004-2009
  • American Chemical Society: Cellulose, Colloids and Surfaces Divisions, Local Section Chair 2000 
  • International Association of Scientific Papermakers
  • Sigma Xi, Scientific Research Society 
  • Fiber Society 
  • Society of Wood Science and Technology

Principal Publications

Chapters

  • “Tactile, Frictional, and Softness Attributes of Paper: Letting your Customer Feel Your Product” Chpt 5 in Make Paper Products Stand Out; Strategic Use of Wet End Chemical Additives, Eds. M. Hubbe and S. Rosencrance, Atlanta, TAPPI Press, 2020
  • "Paper Drying Technology", Chapter 8 in Water in Paper: A Guide for Conservators, 2 nd Ed., ed. G. Banik and I. Bruckle, Elsevier, Oxford (2018).
  • "Paper Drying Technology", Chapter 8 in Water in Paper: A Guide for Conservators, 1 st Ed., ed. G. Banik and I. Brunckle, Elsevier, Oxford (2011).
  • "Determination of Fiber-Fiber Bond Properties", T. Uesaka, E. Retulainen, L. Paavilainen, R. E. mark, and  D. S. Keller, in Handbook of Physical and Mechanical Testing of Paper and Paperboard, ed. R. E. Mark, (2001).
  • "Paper",  D. S. Keller, The World Book Encyclopedia, Chicago, IL (2000).

Peer Reviewed Articles

  • Lahti, J., Dauer, M., Keller, D.S. and Hirn, U., “Identifying the weak spots in packaging paper: local variations in grammage, fiber orientation and density and the resulting local strain and failure under load”, Cellulose, 27, 10327–10343 (2020)
  • W. Fuchs, M. Dauer, U. Hirn, W. Bauer and D.S. Keller, “Fast Evaluation of Spatial Coating Layer Formation using UV Scanner Imaging”, TAPPI J. 14(8) 525-533(2015)
  • D. S. Keller, D. Branca and O. Kwon, “Characterization of Nonwoven Structures by Spatial Partitioning of Local Thickness and Density”, J. Mat. Sci. (DOI) 10.1007/s10853-011-23.
  • B. Hole, W. Burry, J. Schwarz and D.S. Keller “Surface energetics of bone mineral and synthetic hydroxyapatite using inverse gas chromatography”, J. Chrom. B. 879 (2011) 1847– 1850
  • Hasan and D. S. Keller, “Bipolar Spectral Analysis of Paper Formation using Wavelet Transforms”, J. Pulp and Paper Sci. 35(2) 7479 (2009).
  • Y. –J. Sung and D. S. Keller, “Evaluation of the changes in paper structure by the laboratory wet pressing conditions”, J. Industrial Engineering Chem., 4(3), 328-332 (2008) .
  • Y. –J. Sung and D. S. Keller, “Local paper structural properties by non-contacting laser profilometry”, Appita Journal, 61(1), 28-34, 2008.
  • J. J. Pawlak and D. S. Keller, "The Compressive Response of a Stratified Fibrous Structure", Mechanics of Materials, 37, 1132-1142 (2005).
  • J. J. Pawlak and D. S. Keller, "Relationships between the local sheet structure and z-direction compressive characteristics", J. Pulp and Paper Science, 30 (9), 256-262 (2004).
  • D. S. Keller, M. Kellomaki, J. Pawlak, J. -E. Hagglund and N. Johansson, "Three Storage Phosphor Systems for B-radiographic Imaging Paper", Nordic Pulp and Paper Research Journal,19 (2) 170-175 (2004) .
  • J. J. Pawlak and D. S. Keller, "Measurement of the local compressive characteristics of polymeric film and web structure using microindentation", Polymer Testing, 22 (5), 515-528 (2003).
  • Y. -J. Sung and D. S. Keller, "Evaluation of Gloss Variation with a Novel Method", J. Korea TAPPI,34 (2), 73-83 (2002).
  • W. M. Burry and D. S. Keller, "Effects of dehydration on the apolar surface and energetics of inorganic paper fillers", J. Chromatography, 972 (2), 235-245 (200).
  • D. S. Keller and J. Pawlak, "B-Radiograhic Imaging of Paper Formation using Storage Phosphor Screens", J. Pulp and Paper Science, 27 (5), (2001).
  • J. J. Pawlak and D. S. Keller, "Analytical Technique for the Comparison of Paper Formation Imaging Methods", J. Pulp and Paper Science, 27 (4), (2001).
  • D. S. Keller, P. Luner and J. Pawlak, “Characterization of the Spatial Variability of Paper Formation Using a Continuous Wavelet Transform", J. Korea TAPPI, 5 (88), (2000).
  • D. S. Keller and P. Luner, "A Surface Energetics of Calcium Carbonates Using Inverse Gas Chromatography", Colloids and Surfaces A, 161:3:401-415, (2000).
  • D. S. Keller, J. Lewalle and P. Luner, "Analysis of Paper Variability Using the Continuous Wavelet Transform", Paperi ja Puu, 81(7), 499-505 (1999).
  • D. S. Keller, J. Lewalle and P. Luner, "Wavelet Analysis of Simulated Paper Formation", Paperi ja Puu, 81 (6) 440-446 (1999).
  • D. S. Keller and P. Luner, "An Instrument for Electron Beam and Light Transmission Imaging of Mass Distribution in Paper and Fibrous Webs", Rev. Sci. Instruments, 69(6), (1998).
  • T. Okayama, D. S. Keller and P. Luner, "The Wetting of Calcite Surfaces", J. Adhesion, 63, 231-252, (1997).
  • M. Pyda, M. Sidqi, D. S. Keller and P. Luner, "An Inverse Gas Chromatographic Study of Calcium Carbonate Treated with Alkylketene Dimer," TAPPI J., 76:4, (1993).
  • D. S. Keller and D. V. Keller, Jr., "The Effect of Particle Size on the Antithixotropic and Shear Thickening Properties of Coal-Water Dispersions", J. Rheology, 35:7, (1991).
  • D. S. Keller and D. V. Keller, Jr., "An Investigation of Shear Thickening and Anti-thixotropic Behavior of Concentrated Coal-Water Dispersions", J. Rheology, 34:7, (1990).

Refereed Proceedings

  • “Computer Simulation of Liquid Wetting in Low Density Fibrous Networks”, 2020 Progress in Paper Physics Seminar. Jyväskylä, Finland
  • “Mesoscale Liquid Absorption Properties of Towel Papers”, D. S. Keller and H. Abedsoltan, TAPPI Int. Paper Physics Conference, Indianapolis, 2019
  • “Continuous Cross Machine Formation by Wavelet Transform Analysis”, D. S. Keller and M. Kellomäki, TAPPI PaperCon - Process Control, Indianapolis, 2019
  • “Exploration of Relationships between Structural and Mechanical Heterogeneity of Paperboards”, D. S. Keller, J. M. Considine, C. F. Andres, N. J. Bechle, and X. Tang, TAPPI Int. Paper Physics Conference, Indianapolis, 2019
  • “Linking Paper Structure to Local Distribution of Deformation of Deformation and Damage”. J. Lahti, M. Dauer, D.S. Keller, and U. Hirn, Advances in Pulp and Paper Research Trans. 16th Fundamental Research Symposium:. (2017) Oxford UK.
  • “Structural Properties and Compressive Response of Hygienic Papers,” D. S. Keller, G. Wang, and C. Feng, Proceedings of 2016 Pan Pacific Conference, Oct 25-28, Seoul, Korea, 2016.
  • “Characterization of Paperboard Formation using Soft X-radiography and Image Analysis,” D. S. Keller, and H. Abedsoltan, Proceedings of 2016 TAPPI PaperCon Papermakers Forum, May 15-18, Cincinnati, OH. TAPPI Atlanta, GA, 2016
  • "Local Structural Orientation of Towel and Tissue Grades”, D.S. Keller, C. Feng, J.-F. Bloch, and S. Roland du Roscoat, Advances in Pulp and Paper Research, Trans. 15th Fundamental Research Symposium. (2013), Cambridge, UK.
  • “Biomorphic Silicon Carbide Ceramics from Fibrillated and Microfibrillated Wood Fibers,” D. S. Keller, and X. Chen, 8th International Paper Coating and Chemistry Symp., June 10-14, Stockholm, Sweden, 2012.
  • “Spatial Partitioning of the Structural Properties of Tissue and Towel Grades”, D.S. Keller, D. Branca, and O. Kwon, Advances in Paper Science Research, Trans. 14th Fundamental Research Symposium. (2009), Oxford, UK.
  • “First Year Engineering: Exploring Engineering through the Engineering Design Loop,” Douglas Troy, D. Steven Keller, James Kiper and Lei Kerr, pp. T1A1-T1A6, 38th ASEE/IEEE Frontiers in Education Conference, Saratoga Springs, NY, October 22 – 25, 2008.
  • "Applications of Thickness and Apparent Density Mapping by Laser Profilometry to Characterize Paper Structure", Advances in Paper Science Technology, Trans 13 th Res. Sym., 2005, Cambridge, UK.
  • "Characterization of Non-Stationary Structural Non- Uniformities in Paper", M. Kellomaki, J. Pawlak, Y.-J. Sung and D. S. Keller, The Science of Papermaking, Trans 12 th Res. Sym., 2001 Oxford, UK.
  • "Surface Energetics of Calcium Carbonate Powders by Inverse Gas Chromatography (IGC) and Cleaved Crystals by Contact Angle Measurement", D. S. Keller and P. Luner, The Fundamentals of Papermaking Materials, Trans 11 th Res. Symp. 1997. Cambridge, UK.

Presentations

  • “Elements of paper science: Material for teaching chemistry”, D. S Keller, Chemical Education Division, 2019 (Spring) National Meeting of the American Chemical Society, Orlando
  • “Fiber Segment Orientation and Crossings in Nonwovens from 3D X-Ray Microscopic Data Sets”, D. S. Keller, Nonwovens Innovative Conference (TAPPI-NETInc), Indianapolis, 2019
  • “Z-Dimensional Local Compression of Paper Towel Structural Features” D. S. Keller and D. Knettel, 2018 Progress in Paper Physics Seminar. Lodz, Poland, 2018
  • “Characterization of the heterogeneous specific stiffness of paperboard materials” D. S. Keller and J. Considine,. 2018 Progress in Paper Physics Seminar. Lodz, Poland, 2018
  • “Fiber Segment Orientation and Crossings in Nonwovens from X-ray Micro-Computed Tomographic Data”, D. S. Keller, Proceeding of the Fiber Society 2016 Fall Meeting and Tech. Conf., Oct 9-11 Ithaca, NY.(Abstract Only). 
  • “Soft Radiography for the Structural Characterization of Paperboards,” D. S. Keller, and H. Abedsoltan, 2016 Progress in Paper Physics Seminar, Aug 22-26, Darmstadt, DE. 2016
  • “Analysis of Nonwoven Fabrics: Radiographic Imaging in Two- and Three-Dimensions,” D. S. Keller, G. Wang, C. Feng and Y. Huang, Proceedings of 2016 Nonwovens Innovative Conference (TAPPI-NETInc), May 15-18, Cincinnati, OH. TAPPI Atlanta,GA, 2016
  • Measuring the Compressive Response of Embossed and TAD Features in Paper Towels,” D. S. Keller, G. Wang, “Proceedings of 2016 TAPPI Tissue360 Forum, April 19-22, Atlanta, GA, 2016
  • “Analysis of the Engineered Structure of Tissue and Towel Papers using 2D and 3D Radiographic Imaging,” D. S. Keller, C. Feng, and Y. Huang, J.-F. Bloch and S. Roland du Roscoat, Proceedings of 2015 TAPPI PaperCon - Tissue360 Forum, April 19-22, Atlanta, GA,
  • “X-Radiography for Fibrous Web Structural Analysis”, D. S. Keller, G. Wang, C. Feng, and Y. Huang, Proceeding of the Fiber Society 2014 Fall Meeting and Technical Conference, Oct 22-24 Philadelphia, PA.              
  • “Characterizing the compressive failure of embossed and TAD features in paper towel” D. S. Keller, and G. Wang, 2014 Progress in Paper Physics Seminar: Spanning Nano-to-Micro Scales Research and industry, Sept 7-11, Raleigh, NC.
  • “Determining the Coating Layer Distribution on Paper using UV Scanner Imaging,” W. Fuchs, U. Hirn, W. Bauer, and D.S. Keller, 2014 Progress in Paper Physics Seminar: Spanning Nano-to-Micro Scales Research and Industry, Sept 7-11, Raleigh, NC. 
  • 2012 International Paper Physics Conference, Stockholm,
  • Stockholm “Biomorphic Silicon Carbide Ceramics from Fibrillated and Microfibrillated Wood Fibers” 8th International Paper Coating Chemistry Symp. (2012),
  • “Mapping the Compressive Properties of Low Density Fibrous Materials” 2011 Progress in Paper Physics: A Symposium, Graz Austria,
  • “Mapping the Z-Direction Distribution of Mass of Paper Towel Grades using X-Ray Microtomography” 2010 Progress in Paper Physics: A Symposium, Montreal,
  • “Comparison of Structural Mapping of Paper Towels using Twin Laser Profilometry and X-Ray Microtomography” 2010 Progress in Paper Physics: A Symposium, Montreal,
  • “Paper: An Overview of the Material Science” Invited lecture, Stuttgart Academy for Fine Arts, Fellbach , Germany (2009).
  • “Wet End Retention: Consideration of Counteracting Forces” Guest Lecture, Helsinki University of Technology: part of the TKK PapSat Short Course (2009).
  • “Twin Laser Profilometer and Transmission beta-Radiographic Measurements of Wet Creped Sheet Structures” Georgia Pacific Innovation Center, Neenah WIU, Invited Lecture (2009).
  • “Papermaking Research Symposium, “Contrasting Views of Paper Structure: A step through the looking glass” Invited Keynote Lecture, Kuopio, Finland (2009).
  • “Spatial Partitioning of the Structural Properties of Tissue and Towel Grades”, D.S. Keller, D. Branca, and O. Kwon, in Advances in Paper Science Research, Trans. 14th Fund.Res.Sym, Oxford, UK (2009).
  • “Effect of Mid-Molecular Spacers in Tetra Functional Carboxylic Acids on Wet Strengthening of Cellulosic Fibrous Networks”, D. S. Keller, P. M. Caluwe, S. Rowland and D. Kpeglo, 7th International Paper Coating Chemistry Symp. Hamilton, ON, Canada June 10-12 (2009).