Karen E. Daniels

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Karen E. Daniels
Daniels in May 2022
NationalityAmerican
Alma mater
Known for
Advances in experimental probes of the structure and mechanics of granular materials.
Awards
  • Fellow of the APS (2018)

    Fellow of the AAAS (2021)

    NCSU Equity for Women (2015)
Scientific career
FieldsExperimental Physics, Soft Matter, Granular Materials
Institutions
Thesis Pattern Formation and Dynamics in Inclined Layer Convection
Doctoral advisorEberhard Bodenschatz
Other academic advisorsMary Hudson, Robert Behringer
Websitedanielslab.physics.ncsu.edu/people/karen-daniels/

Karen E. Daniels is an American physicist who is a professor of physics at North Carolina State University. Her research considers the deformation and failure of materials. She is a Fellow of the American Physical Society, and serves on their Committee on the Status of Women in Physics. She is also a Fellow of the American Association for the Advancement of Science.

Early life and education[edit]

Daniels completed a bachelor's degree in physics at Dartmouth College in 1994.[1][2] She originally planned to study engineering.[3] After graduating, Daniels spent three years as a physics teacher at Saint Ann's School. Daniels joined Cornell University as a graduate student, earning a PhD in 2002.[1] She was a postdoctoral research associate at Duke University, working on jamming transitions.[1][4] At Duke University, Daniels developed a technique that can make a container of granules arrange into a solid-state crystal (freeze) or into a fluid (melt) by changing the rate at which they are shaken.[5]

Research and career[edit]

Daniels joined North Carolina State University as an assistant professor in 2005.[1] She is interested in how materials compress, stretch and bend when a force is applied.[6] She specializes in granular materials and their force chains, and how networks within granular materials control their bulk properties. She developed a way to monitor whether granular materials reach a thermodynamic equilibrium, using plastic granules.[7]

In 2011, Daniels spent a year as an Alexander von Humboldt Foundation fellow at the Max Planck Institute for Dynamics and Self-Organization in Göttingen,[1][8] coordinating a workshop on complex system's: "Particulate Matter: Does Dimensionality Matter."[9] She worked with Haverford College to study the naturally arising sound waves of granular materials.[10][11] When the materials experience shear stress, the vibrating grains start to stick to the interface. When the stress becomes too much, several grains slip at once, rearranging into new patterns.[12] The stick-slip transition is accompanied by low-frequency vibrational modes.[12] She demonstrated that sound passes through the areas of a material where particles are tightest together.[12] Her lab team have investigated how space missions could explore asteroids.[13] She was supported by NASA to conduct experiments in zero gravity, and took a group of undergraduates to Zero Gravity Corporation.[13] She has also looked at liquid metals, and demonstrated that applying a low voltage to eutectic gallium-indium can cause it to form snowflake-like crystals.[14]

Daniels is on the editorial board of Physical Review Letters.[1][15] She serves on the American Physical Society Topical Group on Soft Matter committee.[16] Daniels has been involved with activities to increase the representation of women in physics since the start of her career.[17] She is part of the North Carolina State University NSF ADVANCE award "Developing Diverse Departments".[1][18]

Awards and honors[edit]

References[edit]

  1. ^ a b c d e f g h "Karen Daniels – Daniels Lab". Retrieved 2019-03-01.
  2. ^ "Alumni highlights: Karen Daniels '94 | Department of Physics and Astronomy". physics.dartmouth.edu. 22 May 2018. Retrieved 2019-03-02.
  3. ^ Anonymous (2018-05-11). "Q&A: Looking for Failure". Physics. 11: 47. Bibcode:2018PhyOJ..11...47.. doi:10.1103/Physics.11.47.
  4. ^ "Physics - Karen Daniels". physics.aps.org. Retrieved 2019-03-01.
  5. ^ "Shake and Stir to Make Granular Materials Change Phases". today.duke.edu. Retrieved 2019-03-02.
  6. ^ Daniels, Karen (2014-11-03). "Viewpoint: Pushing on a Nonlinear Material". Physics. 7. doi:10.1103/Physics.7.113.
  7. ^ "Force is the key to granular state-shifting". EurekAlert!. Retrieved 2019-03-01.
  8. ^ "Convection". www.ds.mpg.de. Retrieved 2019-03-02.
  9. ^ "NSF Award Search: Award#1019151 - Workshop Support for "Particulate Matter: Does Dimensionality Matter?"; Max Planck Institute for the Physics of Complex Systems; Dresden, Germany". www.nsf.gov. Retrieved 2019-03-02.
  10. ^ "Researchers listen for failure in granular materials". ScienceDaily. Retrieved 2019-03-01.
  11. ^ Brzinski, Theodore A.; Daniels, Karen E. (2018-05-25). "Sounds of Failure: Passive Acoustic Measurements of Excited Vibrational Modes". Physical Review Letters. 120 (21): 218003. arXiv:1610.09705. Bibcode:2018PhRvL.120u8003B. doi:10.1103/physrevlett.120.218003. ISSN 0031-9007. PMID 29883186. S2CID 47001956.
  12. ^ a b c "Granular materials emit characteristic sounds before slipping". Physics World. 2018-06-12. Retrieved 2019-03-01.
  13. ^ a b "A Zero-Gravity Laboratory". 2019-02-13. Retrieved 2019-03-01.
  14. ^ Scienmag (2017-10-30). "Voltage-driven liquid metal fractals". Scienmag: Latest Science and Health News. Retrieved 2019-03-02.
  15. ^ "PRL Editorial Team". Physical Review Letters. 2022-09-20. Retrieved 2023-03-16.
  16. ^ "Committees". www.aps.org. Retrieved 2019-03-01.
  17. ^ Zastavker, Yevgeniya V.; Williams, Elvira; Whitten, Barbara; Valentine, Jami; Rudati, Juana I.; Ong, Maria; Michelman-Ribeiro, Ariel; Martínez-Miranda, Luz J.; Kay, Laura (2006-10-17). Women in physics in the U.S.: A progress report. WOMEN IN PHYSICS: 2nd IUPAP International Conference on Women in Physics. Vol. 795. pp. 175–178. doi:10.1063/1.2128320.
  18. ^ "Advance at NC State – 2012". Retrieved 2019-03-02.
  19. ^ "NSF Award Search: Award#0644743 - CAREER: State Variables in Granular Materials". www.nsf.gov. Retrieved 2019-03-02.
  20. ^ says, Charles Fulp. "The Dirt Whisperer". NC State News. Retrieved 2019-03-01.
  21. ^ "Equity for Women Awards – Past Winners : Council on the Status of Women". Retrieved 2019-03-01.
  22. ^ "Physical Review Journals - Outstanding *Referees". journals.aps.org. Retrieved 2019-03-01.
  23. ^ "APS Fellowship". www.aps.org. Retrieved 2019-03-01.
  24. ^ "2021 AAAS Fellows". Retrieved 2022-01-26.

External links[edit]

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