Research Fellow, DuPont Company
Central Research and Development
1516 Athens Rd.
Wilmington DE 19803
Phone: 302-468-6667
email: roger@rbhsfrench.com
web: http://www.lrsm.upenn.edu/~frenchrh/index.htm

PERSONAL DATA

Born December 29, 1957; married, two children, fluent in Spanish, U. S. Citizen.

EDUCATION

• Ph. D. in Materials Science, Massachusetts Institute of Technology, 1985: Electronic Structure of Al2O3: VUV
  Reflectivity Measurements from Room Temperature to 1100 °c. Thesis Adviser: R. L. Coble
• B. S. degree with distinction in Materials Science, Cornell University, 1979.

CURRENT RESEARCH INTERESTS

Optical Properties and Electronic Structure of Materials

• Optics and electronic structure of ceramics, polymers and optical materials: VUV/UV/Vis spectroscopy.
• Electronic structure of surfaces and interfaces: valence electron energy loss spectroscopy (VEELS).
• ab initio optical properties from LDA band structures for nanoscale materials such as biomolecules.

Optical Materials and Elements

• Polymers for IC photolithography at 248, 193, and 157 nm: pellicles and photoresists: VUV/DUV ellipsometry.
• Fluids for the 2nd and 3rd generations of 193 nm Immersion Lithography.
  
• Near- and far-field optics of complex particulate dispersions: Finite element solutions to Maxwell’s Equations.
• Radiation Durability and photochemical degradation mechanisms.
  

Long Range van der Waals – London Dispersion Interactions and Nanoscale Assembly

• vdW-Ld dispersion interactions and full spectral Hamaker coefficients.
• Wetting, surface and interface energies of polymers and ceramics.
• vdW-Ld dispersion energies and graded interface models of grain boundaries and interlayers.
• vdW-Ld interactions and torques which arise for optically and morphologically anisotropic cylinders.
• Biomolecular/Inorganic assembly and control.

RESEARCH EXPERIENCE

University of Pennsylvania: Adjunct Professor, Dept. of Materials Science, 1996 to present.
DuPont Co. Central Research:

• Research Fellow, May 2006 to present.
• Senior Research Associate, Dec. 2000 to April 2006.
• Research Associate, Dec. 1996 to Dec. 2000.
• Senior Research Scientist, Oct. 1993 to Dec. 1996.
• Research Scientist, Mar. 1990 to Oct. 1993.
• Research Chemist, Nov. 1985 to Mar. 1990.

Areas of research at DuPont Co. Central Research and the University of Pennsylvania:

Optical Properties & Electronic Structure of Ceramics, Optical Materials, Polymers and Molecular Materials.

• SrTiO3, Si3N4, SiO2, SiC, Al2O3, AlON, AlN,AlPO4, MgO-MgAl2O4, ZrO2, LiB3O5, and BaB2O4.
• Fluoropolymers, Ethylene Co-polymers, Polyimides, Polystyrene, Polyester, Poly(di-alkylsilanes).
• Linear and cyclic alkanes, water, lipids, thiols.
  

Radiation Durability and Photochemical Degradation of Optical Materials

• Controlling and disabling intrinsic and extrinsic photochemical degradation mechanisms in materials.
  

Computational Optics of Complex Microstructures and Particulate Dispersions

• Multiple scattering and near and far field optical interactions in complex microstructures.
• Diffuse reflectance, transmission and haze of particulate dispersions and partially crystalline polymers.

Materials For Semiconductor Photolithography

• Novel immersion fluids and systems for use in 32 nm half pitch IC photolithography.
• Fluoropolymer pellicles and photoresists for 157 and 193 nm lithography. Optimization of transparency.
• Attenuating phase shift photomasks from Si3N4/TiN multilayers, graded Cr-OCN thin films and organosilicates.
  

Materials and Optical Elements For Photovoltaics

• Materials for Low-, Medium- and High Concentration Photovoltaics and Concentrating Solar Thermal Power.
• Optical enhancements for Flat Plate Photovoltaics.
  

Electronic Structure of Interfaces and Surfaces

• Interatomic bonding and graded interface models for 5 and n13 grain boundaries in SrTiO3.
  

London Dispersion Forces and Full Spectral Hamaker Constants for Wetting of Surfaces and Interfaces

• Hamaker Coefficients from VUV(bulk), TEM VEELS(interfaces) spectroscopy and ab initio optical properties.
• In situ determination of optical properties and vdW-London dispersion energies of interfaces in SrTiO3.
• Control of intergranular film thickness by doping in silicon nitride structural ceramics and thick film resistors.
• vdW-London dispersion interactions for single wall carbon nanotubes, including dispersion torques.

Long Range Interactions in Nanoscale Science

• Harnessing Electrodynamic, Electrostatic and Polar Interactions for Nanoscale Assembly and Devices.

Massachusetts Institute of Technology:

• Visiting Research Scientist, Feb. 1986 to Feb. 1988.
• Post-Doctoral Associate, Oct. 1984 to Oct. 1985.
• Graduate Research Assistant, Feb. 1980 to Oct. 1984.

Cornell University:

• Research Assistant, May 1976 to May 1979.

TEACHING EXPERIENCE

• Ph. D. Thesis Advisor for four students, three at Univ. of Pennsylvania, one at MIT.
• Ph. D. thesis committee member for 9 students at Univ. of Pennsylvania, MIT, Univ. of Toronto, and Stanford.

PROFESSIONAL ACTIVITIES AND AWARDS

• 2009 Nominated For U. S. Department of Energy, Basic Energy Sciences Advisory Committee.
• 2009 Best Concentrating Photovoltaics Poster Award, 34th IEEE PVSC, Philadelphia, PA.
• 200,2008 Program Committee, SPIE Conf. on Optical Microlithography XXI, San Jose CA.
• 2008,05,02,99 Internat’l Organizing Committee, “7th 6th 5th and 4th Internat’l Workshop on Interfaces: Spain.
• 2004-2010 Appointed to the Council on Materials Science and Engineering of the Division of Materials Science and Engineering, Office of Basic Energy Sciences, United States Department Of Energy.
• 2004-2010 Meeting Trustee of the Wilmington Monthly Meeting Of Friends.
• 2002 Samuel Giejsbeek Award of the American Ceramic Society, Pacific Coast Region, for development of attenuated phase shift photomasks.
• 2002 Nominated to attend National Academy of Engineering’s Frontiers of Engineering Symposium.
• 2000-2003 Board of Directors, American Ceramic Society.
• 1999 Fellow of the American Ceramic Society.
• 1998-1999 Lithography Technology Working Group, 1999 Semiconductor Industry Assoc. Roadmap.
• 1998 Fulrath Award of the American Ceramic Society and Ceramic Society of Japan.
• 1997-2001 Officer and 2000 Chair, Basic Science Division, American Ceramic Society.
• 1996-1997 Program Co-Chair, Gordon Conference on Solid State Studies in Ceramics.
• 1995-1996 Nominated as Associate of the DuPont Fellows Forum.
• 1989- present Associate Editor, Journal of the American Ceramic Society.
• 1989 R & D 100 Award for VUV-LPLS Spectrophotometer

PROFESSIONAL MEMBERSHIPS

American Ceramic Society; American Chemical Society; Materials Research Society, American Physical Society; Society for Optical Engineering (SPIE); Institute of Electrical & Electronics Engineers, IEEE Electron Devices Society

PUBLICATIONS, PRESENTATIONS AND PATENTS

91 refereed publications, 50 proceedings, 2 book chapters. 110 invited talks, 162