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Glenn A. Waychunas

Guest Senior Scientist

Affiliate

Building 074, Room 0207

M/S 74R316C

Phone: 510-495-2224

Fax: 510-486-5686

gawaychunas@lbl.gov

Curriculum Vitae

  • Researcher ID
  • Google Scholar
  • Education
  • Experience
  • Awards
  • Professional Affiliations
  • Boards & Committees
  • Scholarly Service
  • Courses Taught
  • Other Web Pages

Biography

Glenn became interested in mineral structure and crystal chemistry while in graduate school at UCLA where he did Mössbauer, optical spectroscopy and x-ray diffraction on the detailed structure of oxide solid solutions for his thesis (Advisor Wayne Dollase). Arriving at Stanford’s Center for Materials Research in 1978 as staff scientist, he soon started doing some of the first mineralogical synchrotron X-ray absorption spectroscopy at SSRL in collaboration with Gordon Brown. Early studies broke ground in terms of soft-x-ray spectroscopy on the Al, Mg and Na K-edges in glasses and silicate minerals, and the structure of network-modifying ions in silicate melts. Later this work involved arsenate uptake on ferrihydrite and other oxides, for which he is well known, in collaboration with Jim Davis and colleagues at the USGS. These early sorption studies helped to inspire the development of mineral-water interface investigations at the (then new) APS synchrotron, notably at the GSECARS beamlines where Glenn was on the development team, including some of the first surface x-ray scattering measurements of oxide interfaces with water present. Glenn came to LBNL/ESD in 1997, and extended these studies with UHV characterization of solid interfaces, and structure refinements of the wet hematite, corundum and goethite surfaces. More recently, in cooperation with Ron Shen in the physics department at UC Berkeley, Glenn has been using non-linear optical measurements to help describe the hydroxyl and water part of the mineral-water interface. The goal is to create a complete picture of the interface region, including the water structure, as a function of pH and solution chemistry.

The interface work coincides with an interest in natural nanoparticles, the structure of which is often affected by interfacial interactions, and poorly crystalline solids. Together with Jill Banfield, Glenn helped form the Berkeley Nanogeoscience Center in 2005 to study nanoparticle structure, formation, aggregation and transformations. With colleagues Ben Gilbert, Heng Zhang and numerous postdocs and visitors, the center has produced important studies on ZnS, Fe oxide, TiO2, UO2 and several other types of nanoparticles. Work on the structural nature of amorphous carbonate phases and their “solid solutions”, and carbonate nucleation processes, is currently ongoing as part of the ESD EFRC dedicated to carbon sequestration processes.
Glenn has authored or coauthored over 160 publications and his work has been cited more than 5000 times. He is a fellow of the Mineralogical Society of America, is currently chair of the SSRL Scientific Advisory Committee, and sits on several other national and international scientific advisory committees.

Publications

  • Researcher ID
  • Google Scholar

Research Interests

Application of synchrotron radiation-based spectroscopy and scattering methods to problems in geochemistry, environmental chemistry and mineral-water interface chemistry; X-ray scattering studies of atomic arrangements in amorphous materials, nanoparticles, surfaces, and wet interfaces; Non-linear optical spectroscopy of interface molecular, electronic and water structure; Computer modeling of crystal structures, solid solutions, crystal surfaces and surface water structure; calculation of x-ray and related spectra of materials; Nucleation phenomena and topology; kinetics of precipitation processes at mineral surfaces; Luminescence and electronic properties of solids and interfaces.

Education

  • B.A. Chemistry, Minors: Geology, Mathematics, Temple University, Dean's List four years; Magna cum Laude; Chemistry dept.highest honors
  • Ph.D. Geochemistry, Minors: Materials Science, Physical Chemistry, University of California, Los Angeles, Detailed atomic structure of oxide solid solutions

Experience

  • PI BES Theoretical and Experimental Geochemistry Program, LBNL-ESD, 2011-Present
  • PI Nanogeoscience program, LBNL-ESD, 2008-Present
  • Senior Staff Scientist, Lawrence Berkeley National Laboratory (LBNL) - Earth Sciences Division (ESD), Geochemistry Dept., 2007-Present
  • Short Course Lecturer, Mineralogical Society of America (Luminescence of Apatite; Grazing incidence methods in synchrotron x-ray spectroscopy), 2002
  • Short Course Lecturer, Mineralogical Society of America (Structural characterization of Nanomaterials), 2001
  • Staff Scientist, LBNL-ESD, Geochemistry Dept., 1997-2007
  • Design Team Leader, x-ray spectroscopy, GSECARS, APS, 1994-2000
  • Short Course Lecturer, Mineralogical Society of America (Spectroscopic/Mathematical methods), 1991
  • Guest Professor, Bayerisches Geoinstitut (Universität Bayreuth, Federal Republic of Germany), 1989
  • Short Course Lecturer, Mineralogical Society of America (X-ray Spectroscopy), 1988
  • Lecturer, Stanford University, 1984-1998
  • Director of X-ray diffraction/spectroscopy laboratory, Center for Materials Research (CMR), Stanford University, Stanford, California, 1982-1997
  • Senior Research Scientist, School of Engineering, Stanford University, 1982-1997

Awards

  • Award for Excellence in Editing, American Mineralogist, MSA, 2000

Professional Affiliations

  • Geochemical Society (GS), 2007-Present
  • Molecular Geochemistry and Nanogeoscience, Group Leader, 2000-Present
  • G.T. Seaborg Transuranic Institute, Lawrence Berkeley National Laboratory (LBNL) - Chemical Sciences Division (CSD), Member, 1999-Present
  • American Chemical Society (ACS), 1999-Present
  • Envirosync Organization, 1998-Present
  • Mineralogical Society of America (MSA), Fellow, 1990-Present
  • At-large representative, Geosync Organization, 1996-1999
  • Geosync Organization, At-large Rep., 1996-1999
  • Geosync Organization, AGU; Charter Member Geosync, Chair, 1994-1996
  • Geosync Organization, Chair, 1994-1996
  • American Geophysical Union (AGU)

Advisory Boards, Committees, and Councils

  • Professional Staffing Committee, LBNL-ESD, 2008-Present
  • Charter Member, Envirosync Organization, 1998-Present
  • Member, GSECARS Steering Committee, 1998-Present
  • Chair, Proposal Review Board, Canadian Light Source [Member in 2009], 2010-2012
  • Chair, Scientific Advisory Committee, Stanford Synchrotron Radiation Laboratory, Stanford University, 2008-2012
  • Member, Scientific Advisory Committee, Advanced Photon Source, Argonne National Laboratory, 2007-2012
  • Lytle Award; Spicer Award Committees, Stanford University SSRL, 2007
  • Director, Search Committee for SSRL, SLAC ALD, 2005, 2009-2010
  • Organization committee, XAFS XV International Meeting, 2005-2006
  • Chair, SSRLUOEC, 2004-2005
  • Co-chair, Stanford Synchrotron Radiation Laboratory Users Organization Executive Committee (SSRLUOEC), 2003-2004
  • (Chair 2004, Committee on Short Courses, Mineralogical Society of America (MSA), 2001-2004
  • Organization Committee, ALS Users meeting, 1999
  • Kraus Crystallographic Award Committee, MSA, 1998
  • Member, Board of Governors, CARS (Consortium for advanced radiation sources, University of Chicago), 1994-1998
  • Member, Committee on Committees, MSA, 1989-1990
  • Ph.D. Orals Examination Committee, Materials Science and Engineering Dept., 1984; 1993
  • Review Committee for GSA/MSA abstracts, GSA National Meeting, 1983; 1987
  • Central Facilities Committee, Center for Materials Research, Stanford University, 1980-1992

Scholarly Service

  • Editorial Board, International Journal of Nanotechnology, 2002-Present
  • Proposal Review Panel, Advanced Light Source, 2005-2009
  • Proposal Evaluation Panel, DOE ERSP, 2007
  • Proposal Evaluation Panel, DOE NABIR, 2001
  • Associate Editor, American Mineralogist, MSA, 1989-1993; 1997-2001

Courses Taught

  • Materials Science and Engineering 180 Stanford University "Atomic Arrangements in Solids"
  • Mathematical crystallography, inorganic and metallic structures, crystal chemistry, X-ray and electron diffraction.
  • Geology 360 (with G.E. Brown, Jr., J. Stebbins) Stanford University "Seminar in Spectroscopy of Silicates and Oxides" Introduction to condensed matter spectroscopy including NMR, Mössbauer, Visible/IR, EXAFS and XANES and other techniques.
  • Civil Engineering 373 (with G. Redden and J. Leckie) Stanford University "Advanced Topics in Aquatic Interfacial Geochemistry" Multidisciplinary seminar in recent developments and ground-breaking concepts in interfacial geochemistry.

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