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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; Pleasants J; Bu W; Park R Y; Kuzmenko I; Vaknin D . 2012. Amorphous iron-(hydr) oxide networks at liquid/vapor interfaces: In situ X-ray scattering and spectroscopy studies. Journal of Colloid and Interface Science. 384:45-54. abstract
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Tucker G S; Fernandes R M; Li H F; Thampy V; Ni N; Abernathy D L; Bud'ko S L; Canfield P C; Vaknin D; Schmalian J; McQueeney R J . 2012. Magnetic excitations in underdoped Ba(Fe1-xCox)(2)As-2 with x=0.047. Physical Review B. 86:024505. abstract
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Toft-Petersen R; Andersen N H; Li H F; Li J Y; Tian W; Bud'ko S L; Jensen T B S; Niedermayer C; Laver M; Zaharko O; Lynn J W; Vaknin D . 2012. Magnetic phase diagram of magnetoelectric LiMnPO4. Physical Review B. 85:224415. abstract
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Wang W J; Anderson N A; Travesset A; Vaknin D . 2012. Regulation of the Electric Charge in Phosphatidic Acid Domains. Journal of Physical Chemistry B. 116:7213-7220. abstract
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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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