Anna Bezryadina

Postdoctoral Research Fellow
Department of Physics and Astronomy
Phone: (415) 338 - 6371 (Lab)


Ph. D. in Physics, University of California, Santa Cruz 03/2012
• Thesis: “Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy”
• Thesis Advisers: Sue Carter and Glenn Alers

M. S. in Physics, University of California, Santa Cruz 03/2008

B. S. with Honors in Physics and Applied Mathematics, San Francisco State University 05/2005
• Research Adviser: Zhigang Chen

Work Experience:

10/2012 – present San Francisco State University, Postdoctoral Fellow
Optical trapping and manipulation of rod-shaped and spider-shaped bacteria

1/2013 – present San Francisco State University, Lecturer at Physics Department
Thermodynamics and statistical mechanics course (Spring 2013), Modern Physics Lab (Fall 2013)

11/2008 – 03/2012 UCSC and NASA Ames Research Center, Research Assistant
Research in reliability and degradation mechanisms in solar cells:
• Built Photothermal Deflection Spectrometer (PDS) to measure mid-gap trap density in thin films
• Fabricated nanoparticle and polymer solar cells including electrical and optical characterization
• Used PDS to measure optical absorption and mid-gap trap states of silicon (a-Si and µc-Si), polymers (P3HT, MEH-PPV, and PF Red), and nanoparticle thin films (CdTe and PbS)
• Worked with LabView, Raman spectrometer, AFM, glovebox, and vacuum systems

11/2010 – 06/2011 Lawrence Berkeley National Laboratory, Intern
• Performed experimental optical characterization of hydration and dehydration of Pd (palladium) nanoparticles with high pressure and high vacuum systems for energy storage applications

09/2007 – 11/2008 IBM Almaden Research Center and UC Santa Cruz, Research Assistant
• Wrote simulation program in Matlab for generation of optical profiles of solar cells based on physical properties
• Investigated degradation mechanisms and electroluminescent behavior of Mn- and Cu-doped ZnS EL devices

09/2006 – 03/2008 University of California, Santa Cruz, Teacher Assistant
• Managed lab courses, graded exams and held discussion sections and office hours for general physics labs and mathematical methods

08/2003 – 08/2007 San Francisco State University, Undergraduate/Graduate Research Assistant
Conducted non-linear optics experimental research to investigate photovoltaic and electro-optic effects in photorefractive crystals:
• Extensive experience setting up and working with various optical equipment and high-power lasers
• Created optically induced one- and two-dimensional photonic lattices in photorefractive crystals
• Conducted experiments to observe the behavior of different types of solitons, such as Gaussian, vector, dipole, different order of vortices, and surface solitons in lattices

9/2000 – 06/2001 Lomonosov Moscow State University, Russia, Lab Assistant
• Worked in the Optics lab preparing and taking care of optics equipment for demonstrations in the general physics classes


16. A. Bezryadina, G. B. Alers, and S. A. Carter, “Degradation of polymers thin films due to air and light”, in preparation.

15. A. Bezryadina, C. France, T. Ju, J. Ford, R. Graham, L. Yang, S. A. Carter and G. B. Alers, “Mid-gap trap states in CdTe nanoparticle solar cells”, Appl. Phys. Lett. 100, 013508 (2012).

14. G. Zhai, A. Bezryadina, A. J. Breeze, D. Zhang, G. B. Alers, and S. A. Carter, “Air stability of TiO2/PbS colloidal nanoparticle solar cells and its impact on power efficiency”, Appl. Phys. Lett. 99, 063512 (2011).

13. D. Wang, H. Chen, A. Phatak, L. Zhao, M. Frei, Y. Kee Chae, Z. Yuan, A. Bezryadina, G. Alers, “New High Optical Band Gap Window P layer Contact”, IEEE Photovoltaic Specialist Conference, Seattle (2011).

12. I. Carbone, Q. Zhou, B. Vollbrecht, L. Yang, S. Medling, A. Bezryadina, F. Bridges, G. B. Alers, J. T. Norman, and T. Kinmen, “Pulsed chemical vapro depostion of Cu2S into a porous TiO2 matrix”, J. of Vac. Sci. and Tech. A, 29, 051505 (2011).

11. E. Evgenieva, D. Song, A. Bezryadina, P. Zhang, Z. Chen and N. B. Abraham , "Self-trapping and stabilization of double-charged optical vortices in optically-induced periodic structures", J. Mod. Optic., 57, 1377 (2010).

10. X. Wang, A. Bezryadina, Z. Chen, K. G. Makris, D. N. Christodoulides, and G. I. Stegeman, “Observation of Two-Dimensional Surface Solitons”, Phys. Rev. Lett, 98, 123903 (2007).

9. A. Szameit, X. Wang, K. G. Makris, Y. V. Kartashov, T. Pertsch, S. Nolte, Lam Bui, A. Tünnermann, A. Bezryadina, Z. Chen, D. N. Christodoulides, L. Torner, and G. I. Stegeman, “Two-Dimensional Surface Lattice Solitons”, Optics and Photonics News, 18, 42 (2007).

8. S. Suntsov, K. G. Makris, G. A. Siviloglou, R. Iwanow, R. Schiek, D. N. Christodoulides, G. I. Stegeman, R. Morandotti, H. Yang, G. Salamo, M. Volatier, V. Aimez, R. Arčs, M. Sorel, Y.Min, W. Sohler, X. Wang, A. Bezryadina and Z. Chen, “Observation of One- and Two-Dimensional Discrete Surface Spatial Solitons”, J. Nonlinear Opt. Phys. & Mats. 16 (4), 401 (2007).

7. A. Bezryadina, E. Evgenieva, and Z. Chen, “Self-trapping and flipping of doubly-charged vortices in optically-induced lattices”, Opt. Lett. 31, 2456 (2006).

6. A. Bezryadina, D. Neshev, A. Desyatnikov, J. Young, Z. Chen, and Y. Kivshar, “Observation of angular momentum transfer and charge flipping due to nonlinear vortex-lattice interaction”, Opt. Express 14, 8317 (2006).

5. Z. Chen, H. Martin, A. Bezryadina, D. N. Neshev, Y. S. Kivshar, and D. N. Christodoulides, “Experiments on Gaussian Beams and Vortices in Optically-Induced Photonic Lattices”, J. Opt. Soc. Am. B22, 1395 (2005).

4. Z. Chen, A. Bezryadina, I. Makasyuk, and J. Yang, “Observation of Two-Dimensional Lattice Vector Solitons”, Opt. Lett. 29, 1656 (2004).

3. J. Yang, I. Makasyuk, A. Bezryadina, and Z. Chen, “Dipole Solitons in Two-Dimensional Optically-Induced Photonic Lattices”, Opt. Lett. 29, 1662 (2004).

2. J. Yang, I. Makasyuk, A. Bezryadina, and Z. Chen, “Dipole and Quadripole Solitons in Optically-Induced Two-Dimensional Photonic Lattices”, Stud. Appl. Math., 113, 389 (2004).

1. Z. Chen, H. Martin, E. D. Eugenieva, J. Xu and A. Bezryadina, “Anisoptropic Enhancement of Discrete Diffraction and Discrete Soliton Trains in Partially Coherent Photonic Lattices”, Phys. Rev. Lett, 92, 143902 (2004).


“Tug-of-War” Tweezers for Trapping and Manipulation of Rod-Shaped Bacteria
SPIE conference: Optics + Photonics 2011, San Diego, CA, August 2013.

Solar Cells: New generation materials and their reliability
Invited Talk at San Francisco State University, CA, Physics Department, September 2012.

Reliability of organic materials using photothermal deflection spectroscopy
SPIE conference: Optics + Photonics 2011, San Diego, CA, August 2011.

Mid-gap trap states in nanoparticle based solar cells relative to thin film solar cells
MRS workshop: Photovoltaic Materials and Manufacturing Issues, Denver, CO, October 2010.

Trap studies of nanoparticle CdTe and PbS solar cells with photothermal deflection spectroscopy
Material Research Society (MRS) Spring Meeting, San Francisco, CA, April 2010.

Self-trapping of charged-2 vortices in optically-induced photonic lattices
Conference on Lasers and Electro-Optics (CLEO), Long Beach, CA, May 2006.

Observation of topological transformations of vorticies in two-dimensional lattices
Conference on Lasers and Electro-Optics (CLEO), Long Beach, CA, May 2006.

Vortex interaction with a two-dimensional soliton lattice
Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, May 2005.

Awards and Honors:

President's Dissertation-Year Fellowship for the 2010-2011 academic year, UC Santa Cruz (2010)

Summa Cum Laude, San Francisco State University (2005)

Don Eden Academic Excellence Award, San Francisco State University (2004, 2005)

David G.C. Cassa Memorial Scholarship, San Francisco State University (2004)

Jessie York Scholarship, San Francisco State University (2003)