Dr. Georgios Varnavides

Postdoctoral Research Fellow, Miller Institute for Basic Research in Science, University of California, Berkeley

3028 College Ave, Berkeley 94705 CA | +1(857)272-6992 | gvarnavides@berkeley.edu | gvarnavides.com | @_gvarnavides

Education

2017-2022 Ph.D., Materials Science and Engineering , Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA.
- Co-advisors: Prof. P. Narang (Harvard) and Prof. P. Anikeeva (MIT).
- Thesis: Electron Hydrodynamics in Crystalline Solids.

2013-2017 B.S., Materials Science and Engineering , Massachusetts Institute of Technology, Cambridge, MA, USA.
B.S., Civil and Environmental Engineering , Massachusetts Institute of Technology, Cambridge, MA, USA.

Research Interests

Awards & Honors

2022 Outstanding Ph.D. Thesis Research Award, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

Miller Institute Postdoctoral Fellow 2022-2025 (awarded and accepted), Miller Institute for Basic Research in Science, University of California, Berkeley

Heising-Simons Postdoctoral Fellow 2022-2024 (awarded), Kavli Energy NanoScience Institute, University of California, Berkeley

Kavli Institute at Cornell Postdoctoral Fellow 2022-2024 (awarded), Kavli Institute at Cornell, Cornell University

2021 Materials Research Society Graduate Student Gold Award, MRS Fall 2021 Meeting.

John Wulff Award for Excellence in Teaching an Undergraduate Subject, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

2020 Hugh Hampton Young Fellow, Massachusetts Institute of Technology.

2019 Best Paper Award for Second or First Year Student, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

2017

Piper Presidential Graduate Fellow, Massachusetts Institute of Technology.

Horace A. Lubin Award for Outstanding Service to the DMSE Community, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

Juan Hermosilla Prize for exceptional talent and potential at the intersection of mechanics, materials & structures, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology.

2016 Julian Szekely Award for the Outstanding Junior, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

Undergraduate Student Teaching Award in Teaching an Undergraduate Subject, Department of Materials Science and Engineering, Massachusetts Institute of Technology.

Publications

For a complete list of publications, please see my Google Scholar profile. *Denotes equal contribution.

In Preparation

1. G. Varnavides, A. Yacoby, C. Felser, P. Narang, Charge Transport and Hydrodynamics in Materials, Invited Review.

2. G. Varnavides, A.S. Jermyn, P. Anikeeva, P. Narang, SpaRTaNS: Spatially Resolved Transport of Nonequilibrium Species.

Prepress

3. G. Varnavides*, A.S. Jermyn*, P. Anikeeva, P. Narang, Probing carrier interactions using electron hydrodynamics, arXiv:2204.06004 (2022), Submitted.

Journal articles

2022

4. R.A. Kowalski, J.R. Nolen, G. Varnavides, S.M. Silva, J.E. Allen, C.J. Ciccarino, D.M. Juraschek, S. Law, P. Narang, J.D. Caldwell, Mid- to Far-Infrared Anisotropic Dielectric Function of HfS2 and HfSe2, Adv Optical Mater (2022).

5. Y. Wang*, G. Varnavides*, P. Anikeeva, J. Gooth, C. Felser, P. Narang, Generalized design principles for hydrodynamic electron transpor in anisotropic metals, Phys Rev Materials 6, 083802 (2022).

6. L. Y. Maeng, D. Rosenfeld, G. J. Simandl, F. Koehler, A. W. Senko, J. Moon, G. Varnavides, M. F. Murillo, A. E. Reimer, A. Wald, P. Anikeeva, A. S. Widge, Probing Neuro-Endocrine Interactions Through Wireless Magnetothermal Stimulation of Peripheral Organs, Frontiers in Neuroscience, 949 (2022).

7. G. Varnavides*, Y. Wang*, P. J.W. Moll, P. Anikeeva, P. Narang, Mesoscopic finite-size effects of unconventional electron transport in PdCoO2, Phys Rev Materials, 6, 045002 (2022).

2021

8. C. A. Garcia, D. M. Nenno, G. Varnavides, P. Narang, Anisotropic phonon-mediated electronic transport in chiral Weyl semimetals, Phys Rev Materials, 5, L091202 (2021).

9. U. Vool*, A. Hamo*, G. Varnavides*, Y. Wang*, T. X. Zhou, N. Kumar, Y. Dovzhenko, Z. Qiu, C. A. Garcia, A. T. Pierce, J. Gooth, P. Anikeeva, C. Felser, P. Narang, A. Yacoby, Imaging phonon-mediated hydrodynamic flow in WTe2, Nat Phys, 1745-2481 (2021).

10. X. Tian*, X. Yan*, G. Varnavides*, Y. Yuan, D. S. Kim, C. J. Ciccarino, P. Anikeeva, M.-Y. Li, L.-J. Li, P. Narang, X. Pan, J. Miao, Capturing 3D atomic defects and phonon localization at the 2D heterostructure interface, Sci Adv, 7: eabi6699 (2021).

11. M. R. van Delft, Y. Wang, C. Putzke, J. Oswald, G. Varnavides, C. A. C. Garcia, C. Guo, H. Schmid, V. Suss, H. Borrmann, J. Diaz, Y. Sun, C. Felser, B. Gotsmann, P. Narang, P. J.W. Moll, Sondheimer oscillations as a probe of non-ohmic flow in WP2 crystals, Nat Commun 12, 4799 (2021).

12. J. Park*, F. Koehler*, G. Varnavides, M.-J. Antonini, and P. Anikeeva , Influence of Magnetic Fields on Electrochemical Reactions of Redox Cofactor Solutions. Angew. Chem. Int. Ed.. (2021).

13. G. Varnavides, A. Mortensen, W.C. Carter, Simulating Infiltration as a Sequence of Pinning and De-pinning Processes, Acta Materialia 210, 116831 (2021).

14. K. Reidy*, G. Varnavides*, J.D. Thomsen, A. Kumar, T. Pham, A. M. Blackburn, P. Anikeeva, P. Narang, J. M. LeBeau, F. M. Ross, Direct imaging and electronic structure modulation of moiré superlattices at the 2D/3D interface, Nat Commun 12, 1290 (2021).

2020

15. G. Varnavides*, A. S. Jermyn*, P. Anikeeva, P. Narang, Electron hydrodynamics in anisotropic materials, Nat Commun 11, 4710 (2020).

16. D. Gregurec, A. W. Senko, A. Chuvilin, P. D. Reddy, A. Sankararaman, D. Rosenfeld, P.-H. Chiang, F. Garcia, I. Tefel, G. Varnavides, E. Ciocan, P. Anikeeva, Magnetic Vortex Nanodiscs Enable Remote Magnetomechanical Neural Stimulation, ACS nano 14, 7 (2020).

17. P. Periwal, J. D. Thomsen, K. Reidy, G. Varnavides, D. N. Zakharov, L. Gignac, M. C. Reuter, T. J. Booth, S. Hofmann, F. M. Ross, Catalytically mediated epitaxy of 3D semiconductors on van der Waals substrates, Applied Physics Reviews 7, 031402 (2020).

18. J. Moon, M. G. Christiansen, S. Rao, C. Marcus, D. C. Bono, D. Rosenfeld, D. Gregurec, G. Varnavides, P.-H. Chiang, S. Park, P. Anikeeva, Magnetothermal Multiplexing for Selective Remote Control of Cell Signaling, Advanced Functional Materials 30, 36 (2020).

19. D. Rosenfeld, A. W. Senko, J. Moon, I. Yick, G. Varnavides, D. Gregurec, F. Koehler, P.-H. Chiang, M. Christiansen, L. Y. Maeng, A. S. Widge, P. Anikeeva, Transgene-free remote magnetothermal regulation of adrenal hormones, Science advances 6, 15 (2020).

2019

20. G. Varnavides, A. S. Jermyn, P. Anikeeva, P. Narang, Nonequilibrium phonon transport across nanoscale interfaces, Phys Rev B, 100, 115402 (2019).

21. S. Rao, R. Chen, A. A. LaRocca, M. G. Christiansen, A. W. Senko, C. H. Shi, P.-H. Chiang, G. Varnavides, J. Xue, Y. Zhou, S. Park, R. Ding, J. Moon, G. Feng, P. Anikeeva, Remotely controlled chemomagnetic modulation of targeted neural circuits, Nat Nanotechnol 14, 967 (2019).

22. M. Kanik*, S. Orguc*, G. Varnavides, J. Kim, T. Benavides, D. Gonzalez, T. Akintilo, C. C. Tasan, A. P. Chandrakasan, Y. Fink, P. Anikeeva, Strain-programmable fiber-based artificial muscle, Science 365, 6449 (2019).

23. J. Vukajlovic-Plestina, W.Kim, L. Ghisalberti, G. Varnavides, G. Tutuncuoglu, H. Potts, M. Friedl, L. Guniat, W.C. Carter, V.G. Dubrovskii, A. Fontcuberta i Morral, Fundamental aspects to localize self-catalyzed III-V nanowires on silicon, Nat Commun 10, 869 (2019).

Conferences

Presentations

2022

Investigating the Role of Microscopic Interactions in Electron Hydrodynamics, Materials Research Society (MRS) Spring 2022, Honolulu, HI, USA.

SpaRTaNS: Spatially Resolved Transport of Non-equilibrium Species, American Physical Society (APS) March 2022 Meeting, Chicago, IL, USA.

2021

Imaging anisotropic electron fluids with high spatial resolution, KIC Special Seminar, Virtual Seminar.

Electron Hydrodynamics: Microscopic Origins and Effects of Macroscale Geometries, Materials Research Society (MRS) Spring 2021, Virtual Conference.

Electron Hydrodynamics: Microscopic Origins, American Physical Society (APS) March 2021 Meeting, Virtual Conference.

2020

Temperature-Resolved Observations and Predictions of Phonon-Mediated Hydrodynamic Flow of Electrons in WTe2, Materials Research Society (MRS) Fall 2020, Virtual Conference.

Teaching Materials Science using the Wolfram Language, Wolfram Technology Conference 2020, Virtual Conference.

2019

Crystal Symmetry and Electron Hydrodynamics: A Group Theory Approach, Materials Research Society (MRS) Fall 2019 Meeting, Boston, MA, USA.

Spatially-Resolved Non-equilibrium Phonon Transport Across Nanoscale Interfaces, American Physical Society (APS) March Meeting 2019, Boston, MA, USA.

2018

Ab initio Predictions of Spatially-Resolved Non-equilibrium Coherent Transport Phenomena, Materials Research Society (MRS) Fall 2018 Meeting, Boston, MA, USA.

Non-Equilibrium Phonon Transport Across Semi-Coherent Interfaces, 16th International Conference on Phonon Scattering in Condensed Matter, Nanjing, China.

2017

(De)Generative Art, Wolfram Technology Conference 2017, Champaign, IL, USA.

2016

Capillarity in pressure infiltration part I & II: Experiment and modelling, Materials Science & Technology (MS&T16), Salt Lake City, UT, USA.

Posters

2021 Finite-size Effects of Electron Transport in Anisotropic Quasi-Two Dimensional Metals, Materials Research Society (MRS) Fall 2021 Meeting, Boston, MA, USA.

2017

Darcy-Brinkman multiscale modelling applied on the Mosul Dam, New England Mechanics 2017 Workshop, Cambridge, MA, USA.

2016

Simulating capillarity in metal infiltration, Materials Science & Technology (MS&16), Salt Lake City, UT, USA.

Teaching

Lead Instructor

2022 Instructor-G, Department of Materials Science and Engineering, Cambridge, MA, USA
- Mathematics and Computational Thinking for Materials Scientists and Engineers I (3.029)

Teaching Assistant

2020 Graduate Teaching Assistant, Department of Materials Science and Engineering, Cambridge, MA, USA

2016-2017 Undergraduate Teaching Assistant,Department of Materials Science and Engineering, Cambridge, MA, USA

Short Courses

2017-2022 Generative Art Workshop, 4-day IAP workshop, Massachusetts Institute of Technology, Cambridge, MA, USA.
Co-taught with Emma Vargo, Amina Matt, Jovana Andrejevic, and Nina Andrejevic.

Service & Outreach

2019-2021 Graduate Materials Council (GMC) officer on the Departmental Committee on Graduate Studies (DCGS).

2015-2021 Teen Counselor and Teen Advisor for Camp Kesem, a student-run organization helping children through and beyond a parent’s cancer.

Memberships

2022-present Microscopy Society of America (MSA).

2018-present Materials Research Society (MRS).
American Physical Society (APS).

2017-present Tau Beta Pi (ΤΒΠ) - Engineering Honor Society Member.
Chi Epsilon (ΧΕ) - Civil Engineering Honor Society Member.


Last updated: November 2022