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Amalie Frischknecht

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Amalie L. Frischknecht
Alma materPomona College
University of California, Santa Barbara
Scientific career
InstitutionsExxonMobil
Sandia National Laboratories
ThesisStability of Domains in Phase-Separating Binary Fluids in Shear Flow (1998)
Doctoral advisorJames S. Langer

Amalie L. Frischknecht is an American theoretical polymer physicist at Sandia National Laboratories in Albuquerque, New Mexico. She was elected a fellow of the American Physical Society (APS) in 2012 for "her outstanding contributions to the theory of ionomers and nanocomposites including the development and application of density functional theory to polymers".[1] Her research focuses on understanding the structure, phase behavior, and self-assembly of polymer systems, such as complex fluids polymer nanocomposites, lipid bilayer assemblies, and ionomers.[2]

Education

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Frischknecht graduated from Pomona College in Claremont, California, with a Bachelor of Arts (B.A.) in physics and mathematics in 1992.[3] She moved to University of California, Santa Barbara (UCSB) to her graduate studies, where she received a Ph.D. in physics in 1998.[3] At UCSB, she worked under the supervision of James S. Langer. Frischknecht research thesis was on phase-separation of binary fluids in shear flow.[4]

Career and research

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After graduating with her PhD, Frischknecht went to work at ExxonMobil Research & Engineering Co. as a postdoctoral fellow. She stayed there from 1998 until 2000 and worked on polymer rheology with Scott Milner, who is now a professor of physics at Pennsylvania State University. They investigated the dynamics of polymer melts made star-shaped polymers,[5] which are a branched polymer in which several chains are linked together via a central core. They also studied diffusion of linear polymers.[6]

In 2000, Frischknecht moved to Sandia National Laboratories, working first as a postdoctoral fellow and then becoming a permanent member of staff.[7] To understand the behavior of polymers, she relies mostly on molecular modeling techniques like density functional theory and molecular dynamics simulations. Notable works include simulations of ionic polymers (polymers that contain ions that are chemically bound to their structure) to find their structures that they form.[8][9][10] She has also studied the rheology of polymer-nanoparticle blends, finding that when the blend is placed on a substrate a first-order phase transition occurs that expels the polymer from the surface, causing the particles to form a monolayer.[11]

Committees

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Frischknecht serves as the Chair of the Division of Polymer Physics (DPOLY) at the American Physical Society (APS), a position that runs from 2020 to 2021.[12] She previously served as Chair-Elect from 2019 to 2020, and as a member at large for DPOLY from 2013 to 2015.[13] She chaired the 2018 Gordon Research Conference (GRC) on Polymer Physics titled "New Developments in Hierarchical Structure and Dynamics of Polymers."[14] The theme of the conference was new experimental, simulation, and theoretical developments in polymer physics.

Notable publications

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  • "Amalie L. Frischknecht | Find Expertise". www.lanl.gov. Retrieved 2021-03-14.
  • A. L. Frischknecht and K. I. Winey, "The Evolution of Acidic and Ionic Aggregates in Ionomers during Microsecond Simulations," J. Chem. Phys. 150, 064901 (2019).[15]
  • E. G. Sorte, B. A. Paren, C. G. Rodriquez, C. Fujimoto, C. Poirier, L. J. Abbott, N. A. Lynd, K. I. Winey, A. L. Frischknecht, and T. M. Alam, "Impact of Hydration and Sulfonation on the Morphology and Ionic Conductivity of Sulfonated Poly(phenylene) Proton Exchange Membranes," Macromolecules 52, 857-876 (2019).[16]
  • J. P. Koski and A. L. Frischknecht, "Fluctuation Effects on the Brush Structure of Mixed Brush Nanoparticles in Solution," ACS Nano 12, 1664 (2018).[17]
  • L. J. Abbott and A. L. Frischknecht, "Nanoscale Structure and Morphology of Sulfonated Polyphenylenes via Atomistic Simulations," Macromolecules 50, 1184 (2017).[18]
  • L. R. Middleton, J. D. Tarver, J. Cordaro, M. Tyagi, C. L. Soles, A. L. Frischknecht, and K. I. Winey, "Heterogeneous Chain Dynamics and Aggregate Lifetimes in Precise Acid-Containing Polyethylenes: Experiment and Simulations," Macromolecules 49, 9176-9185 (2016) [featured on front cover].[19]
  • K. M. Salerno, A. L. Frischknecht, and M. J. Stevens, "Charged nanoparticle attraction in multivalent salt solution: A classical-fluids density functional theory and molecular dynamics study," J. Phys. Chem. B 120, 5927-5937 (2016).[20]
  • C. L. Ting, R. J. Composto, and A. L. Frischknecht, "Orientational control of polymer grafted nanorods," Macromolecules 49, 1111-1119 (2016).[21]
  • C. K. Simocko, A. L. Frischknecht, and D. L. Huber, “Phase behavior of ternary polymer brushes,” ACS Macro Lett. 5, 149-153 (2016).[22]
  • C. F. Buitrago, D. S. Bolintineanu, M. E. Seitz, K. L. Opper, K. B. Wagener, M. J. Stevens, A. L. Frischknecht, and K. I. Winey, “Direct comparisons of X-ray scattering and atomistic molecular dynamics simulations for precise acid copolymers and ionomers,” Macromolecules 48, 1210 (2015).[23]
  • C. L. Ting, M. J. Stevens, and A. L. Frischknecht, "Structure and dynamics of coarse-grained ionomer melts in an external electric field," Macromolecules 48, 809 (2015).[24]

See all publications on google scholar: https://scholar.google.com/citations?user=z1YWynYAAAAJ&hl=en

References

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  1. ^ "APS Fellow Archive". www.aps.org. Retrieved 2019-03-05.
  2. ^ "Amalie L. Frischknecht - Google Scholar Citations". scholar.google.com. Retrieved 2019-03-05.
  3. ^ a b "Amalie L. Frischknecht". www.lanl.gov. Los Alamos National Laboratory. Retrieved 29 August 2020.
  4. ^ Frischknecht, Amalie L. (1998). Stability of domains in phase-separating binary fluids in shear flow (Thesis). Bibcode:1998PhDT........82F. ProQuest 304419882.
  5. ^ Frischknecht, Amalie L.; Milner, Scott T. (December 2000). "Self-Diffusion with Dynamic Dilution in Star Polymer Melts". Macromolecules. 33 (26): 9764–9768. Bibcode:2000MaMol..33.9764F. doi:10.1021/ma000918a.
  6. ^ Frischknecht, Amalie L.; Milner, Scott T. (July 2000). "Diffusion with Contour Length Fluctuations in Linear Polymer Melts". Macromolecules. 33 (14): 5273–5277. Bibcode:2000MaMol..33.5273F. doi:10.1021/ma992123d.
  7. ^ "Profile for Amalie L. Frischknecht". www.lanl.gov. Retrieved 2020-03-03.
  8. ^ Hall, Lisa M.; Seitz, Michelle E.; Winey, Karen I.; Opper, Kathleen L.; Wagener, Kenneth B.; Stevens, Mark J.; Frischknecht, Amalie L. (11 January 2012). "Ionic Aggregate Structure in Ionomer Melts: Effect of Molecular Architecture on Aggregates and the Ionomer Peak". Journal of the American Chemical Society. 134 (1): 574–587. doi:10.1021/ja209142b. PMID 22133577.
  9. ^ Hall, Lisa M.; Stevens, Mark J.; Frischknecht, Amalie L. (23 March 2011). "Effect of Polymer Architecture and Ionic Aggregation on the Scattering Peak in Model Ionomers". Physical Review Letters. 106 (12): 127801. Bibcode:2011PhRvL.106l7801H. doi:10.1103/PhysRevLett.106.127801. PMID 21517351.
  10. ^ Bolintineanu, Dan S.; Stevens, Mark J.; Frischknecht, Amalie L. (9 July 2013). "Influence of Cation Type on Ionic Aggregates in Precise Ionomers". Macromolecules. 46 (13): 5381–5392. Bibcode:2013MaMol..46.5381B. doi:10.1021/ma400848m.
  11. ^ McGarrity, E. S.; Frischknecht, A. L.; Frink, L. J. D.; Mackay, M. E. (7 December 2007). "Surface-Induced First-Order Transition in Athermal Polymer-Nanoparticle Blends". Physical Review Letters. 99 (23): 238302. arXiv:0710.5883. Bibcode:2007PhRvL..99w8302M. doi:10.1103/PhysRevLett.99.238302. PMID 18233421. S2CID 31935330.
  12. ^ "Governance". www.aps.org. Retrieved 2020-12-29.
  13. ^ "Past Executive Committees". www.aps.org. Retrieved 2020-12-29.
  14. ^ "2018 Polymer Physics Conference GRC". www.grc.org. Retrieved 2019-03-05.
  15. ^ Frischknecht, Amalie L.; Winey, Karen I. (2019-02-14). "The evolution of acidic and ionic aggregates in ionomers during microsecond simulations". The Journal of Chemical Physics. 150 (6): 064901. Bibcode:2019JChPh.150f4901F. doi:10.1063/1.5085069. ISSN 0021-9606. OSTI 1497630. PMID 30769997. S2CID 73474704.
  16. ^ Sorte, Eric G.; Paren, Benjamin A.; Rodriguez, Christina G.; Fujimoto, Cy; Poirier, Cassandria; Abbott, Lauren J.; Lynd, Nathaniel A.; Winey, Karen I.; Frischknecht, Amalie L.; Alam, Todd M. (2019-01-15). "Impact of Hydration and Sulfonation on the Morphology and Ionic Conductivity of Sulfonated Poly(phenylene) Proton Exchange Membranes". Macromolecules. 52 (3): 857–876. Bibcode:2019MaMol..52..857S. doi:10.1021/acs.macromol.8b02013. ISSN 0024-9297. OSTI 1492390. S2CID 104369831.
  17. ^ Koski, Jason P.; Frischknecht, Amalie L. (2018-01-25). "Fluctuation Effects on the Brush Structure of Mixed Brush Nanoparticles in Solution". ACS Nano. 12 (2): 1664–1672. doi:10.1021/acsnano.7b08271. ISSN 1936-0851. OSTI 1499037. PMID 29346734.
  18. ^ Abbott, Lauren J.; Frischknecht, Amalie L. (2017-01-23). "Nanoscale Structure and Morphology of Sulfonated Polyphenylenes via Atomistic Simulations". Macromolecules. 50 (3): 1184–1192. Bibcode:2017MaMol..50.1184A. doi:10.1021/acs.macromol.6b02232. ISSN 0024-9297. OSTI 1371479.
  19. ^ Middleton, L. Robert; Tarver, Jacob D.; Cordaro, Joseph; Tyagi, Madhusudan; Soles, Christopher L.; Frischknecht, Amalie L.; Winey, Karen I. (2016-11-10). "Heterogeneous Chain Dynamics and Aggregate Lifetimes in Precise Acid-Containing Polyethylenes: Experiments and Simulations". Macromolecules. 49 (23): 9176–9185. Bibcode:2016MaMol..49.9176M. doi:10.1021/acs.macromol.6b01918. ISSN 0024-9297. OSTI 1332950.
  20. ^ Salerno, K. Michael; Frischknecht, Amalie L.; Stevens, Mark J. (2016-04-08). "Charged Nanoparticle Attraction in Multivalent Salt Solution: A Classical-Fluids Density Functional Theory and Molecular Dynamics Study". The Journal of Physical Chemistry B. 120 (26): 5927–5937. doi:10.1021/acs.jpcb.6b01392. ISSN 1520-6106. OSTI 1249083. PMID 27057763.
  21. ^ Ting, Christina L.; Composto, Russell J.; Frischknecht, Amalie L. (2016-01-25). "Orientational Control of Polymer Grafted Nanorods". Macromolecules. 49 (3): 1111–1119. Bibcode:2016MaMol..49.1111T. doi:10.1021/acs.macromol.5b02434. ISSN 0024-9297. OSTI 1618240.
  22. ^ Simocko, Chester K.; Frischknecht, Amalie L.; Huber, Dale L. (2016-01-07). "Phase Behavior of Ternary Polymer Brushes". ACS Macro Letters. 5 (1): 149–153. doi:10.1021/acsmacrolett.5b00792. ISSN 2161-1653. PMID 35668590.
  23. ^ Buitrago, C. Francisco; Bolintineanu, Dan S.; Seitz, Michelle E.; Opper, Kathleen L.; Wagener, Kenneth B.; Stevens, Mark J.; Frischknecht, Amalie L.; Winey, Karen I. (2015-02-09). "Direct Comparisons of X-ray Scattering and Atomistic Molecular Dynamics Simulations for Precise Acid Copolymers and Ionomers". Macromolecules. 48 (4): 1210–1220. Bibcode:2015MaMol..48.1210B. doi:10.1021/ma5022117. ISSN 0024-9297. OSTI 1235257.
  24. ^ Ting, Christina L.; Stevens, Mark J.; Frischknecht, Amalie L. (2015-01-28). "Structure and Dynamics of Coarse-Grained Ionomer Melts in an External Electric Field". Macromolecules. 48 (3): 809–818. Bibcode:2015MaMol..48..809T. doi:10.1021/ma501916z. ISSN 0024-9297.
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