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David Vaknin

Scientist II
Address
A500 Zaffarano Hall
Iowa State University
Ames, IA 50011
Phone 515-294-6023
Fax 515) 294-0689
Email vaknin@ameslab.gov

Research Interests

  • Structure and dynamics in low dimensional magnetic systems
  • Specific and non-specific phenomena at bio-membranes
  • Developments of surface sensitive x-ray methods to investigate thin organic films
  • Soft condensed matter physics
  • Graphite intercalation compounds
  • Neutron and x-ray scattering techniques, ESR, and transport properties

        Project Affiliations:
        Bioinspired Materials

        Group Website:
        Neutron Scattering Group
        
        

(Chronologically most recent on top)Education

  • Ph.D. Physics, Hebrew University of Jerusalem, Israel, 1987
  • M.Sc. Physics, Hebrew University of Jerusalem, Israel, 1981
  • B.Sc. Physics and Mathematics, Hebrew University of Jerusalem, Israel, 1978

(Chronologically most recent on top)Professional Appointments

  • 2004 - present Senior Physicist, Ames Laboratory, Iowa State University
  • 1995 - 2004 Physicist, Ames Laboratory, Iowa State University
  • 1993 Visiting Scientist Physics, Risø National Lab, Denmark
  • 1992 Visiting Scientist Physics, Risø National Lab, Denmark
  • 1991 - 1995 Associate Physicist, Ames Laboratory, Iowa State University
  • 1990 - 1991 Postdoctoral Fellow, Risø National Laboratory, Denmark
  • 1987 - 1989 Postdoctoral Fellow, University of Pennsylvania & Exxon Laboratories

(Chronologically most recent on top)Publications with the Ames Laboratory

2012
Wang W J; Bu W; Wang L J; Palo P E; Mallapragada S; Nilsen-Hamilton M; Vaknin D . 2012. Interfacial Properties and Iron Binding to Bacterial Proteins That Promote the Growth of Magnetite Nanocrystals: X-ray Reflectivity and Surface Spectroscopy Studies. Langmuir. 28:4274-4282. abstract
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Wang L J; Prozorov T; Palo P E; Liu X P; Vaknin D; Prozorov R; Mallapragada S; Nilsen-Hamilton M . 2012. Self-Assembly and Biphasic Iron-Binding Characteristics of Mms6, A Bacterial Protein That Promotes the Formation of Superparamagnetic Magnetite Nanoparticles of Uniform Size and Shape. Biomacromolecules. 13:98-105. abstract
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Jeon Y; Vaknin D; Bu W; Sung J; Ouchi Y; Sung W; Kim D . 2012. Surface Nanocrystallization of an Ionic Liquid. Physical Review Letters. 108:055502. abstract
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2011
Li H F; Yan J Q; Kim J W; McCallum R W; Lograsso T A; Vaknin D . 2011. Anisotropic magnetoelastic coupling in single-crystalline CeFeAsO as seen via high-resolution x-ray diffraction. Physical Review B. 84:220501. abstract
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Wang W J; Park R Y; Meyer D H; Travesset A; Vaknin D . 2011. Ionic Specificity in pH Regulated Charged Interfaces: Fe(3+) versus La(3+). Langmuir. 27:11917-11924. abstract
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Toft-Petersen R; Jensen J; Jensen T B S; Andersen N H; Christensen N B; Niedermayer C; Kenzelmann M; Skoulatos M; Le M D; Lefmann K; Hansen S R; Li J Y; Zarestky J L; Vaknin D . 2011. High-field magnetic phase transitions and spin excitations in magnetoelectric LiNiPO(4). Physical Review B. 84:054408. abstract
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Wang W J; Park R Y; Travesset A; Vaknin D . 2011. Ion-Specific Induced Charges at Aqueous Soft Interfaces. Physical Review Letters. 106:056102. abstract
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2010
Li H F; Tian W; Yan J Q; Zarestky J L; McCallum R W; Lograsso T A; Vaknin D . 2010. Phase transitions and iron-ordered moment form factor in LaFeAsO. Physical Review B. 82:064409. abstract
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Tian W; Li J Y; Li H F; Lynn J W; Zarestky J L; Vaknin D; Iop . 2010. Neutron Scattering Studies of LiCoPO4 & LiMnPO4. International Conference on Neutron Scattering 2009. 251:. abstract
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Vaknin D; Garlea V O; Demmel F; Mamontov E; Nojiri H; Martin C; Chiorescu I; Qiu Y; Kogerler P; Fielden J; Engelhardt L; Rainey C; Luban M . 2010. Level crossings and zero-field splitting in the {Cr-8}-cubane spin cluster studied using inelastic neutron scattering and magnetization. Journal of Physics-Condensed Matter. 22:466001. abstract
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