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Pauling Fellowship Alumni

2013 Pauling Fellows

Hans Bernstein received his Ph.D. and B.S. in chemical and biological engineering from Montana State University. His Ph.D. work was supported through the National Science Foundation's Integrative Graduate Educational and Research Traineeship (IGERT-fellowship) in geobiological systems. Hans' research focuses on both applied and fundamental chemical reaction kinetics and transport in biofilms and microbial communities.

In the National Security Directorate, Hans is working under the mentorship of Helen Kreuzer on a project titled; "Exploring and Engineering Phototrophic-Heterotrophic Partnerships," which aims to identify controllable, cooperative ecological phenomena employed by phototrophically driven microbial communities for conceptualizing and engineering multispecies biocatalytic platforms.

Select Publications

  • Lindemann SR, HC Bernstein, HS Song, JK Fredrickson, MW Fields, W Shou, D Johnson, and AS Beliaev. 2016. "ENGINEERING MICROBIAL CONSORTIA FOR CONTROLLABLE OUTPUTS." The ISME Journal 10(2016):2077-2084.  doi:10.1038/ismej.2016.26
  • Beam J, HC Bernstein, Z Jay, M Kozubal, R Jennings, SG Tringe, and WP Inskeep. 2016. "Assembly and Succession of Iron Oxide Microbial Mat Communities in Acidic Geothermal Springs." Frontiers in Microbiology 7:Article No. 25.  doi:10.3389/fmicb.2016.00025
  • Bernstein HC, RS McClure, EA Hill, LM Markillie, WB Chrisler, MF Romine, JE McDermott, MC Posewitz, DA Bryant, A Konopka, JK Fredrickson, and AS Beliaev. 2016. "Unlocking the Constraints of Cyanobacterial Productivity: Acclimations Enabling Ultrafast Growth." mBio 7(4):Article No. e00949-16.  doi:10.1128/mBio.00949-16
  • Henry CS, HC Bernstein, P Weisenhorn, RC Taylor, JY Lee, JD Zucker, and HS Song. 2016. "Microbial Community Metabolic Modeling: A Community Data-Driven Network Reconstruction." Journal of Cellular Physiology 231(11):2339-2345.  doi:10.1002/jcp.25428
  • James GA, AG Zhao, M Usui, RA Underwood, HD Nguyen, H Beyenal, E Pulcini, A Agostinho, HC Bernstein, P Fleckman, J Olerud, KS Williamson, MJ Franklin, and PS Stewart. 2016. "Microsensor and transcriptomic signatures of oxygen depletion in biofilms associated with chronic wounds." Wound Repair and Regeneration 24(2):373-383.  doi:10.1111/wrr.12401
Ryan comes

Ryan Comes is a faculty member at Auburn University's Department of Physics.

Ryan received his Ph.D. in Engineering Physics from the University of Virginia in 2013. Prior to that, he received a B.S. in Physics and a B.S. in Electrical and Computer Engineering from Carnegie Mellon University in 2008. His doctoral research focused on the directed self-assembly of epitaxial complex oxide thin films and was supported by the National Defense Science and Engineering Graduate Fellowship.

At PNNL, his research focused on epitaxial oxide films grown via oxide molecular beam epitaxy under the mentorship of Dr. Scott Chambers in the Physical & Computational Sciences Directorate and the Environmental Molecular Sciences Laboratory.

Patrick El Khoury

Patrick El Khoury received a B.S. in chemistry from the American University of Beirut in 2006, a Ph.D. in Photochemical Sciences from Bowling Green State University in 2010, and postdoctoral training at the University of California, Irvine.

Patrick combines surface-and-tip enhanced Raman spectroscopy with static and dynamic quantum chemical simulations to understand the behavior of a single molecule in its local environment. Under the mentorship of Wayne Hess, he plans to use the fundamental understanding gained from such studies to construct plasmonic devices with various functionalities.

Ryan Renslow — 2012 Pauling Fellow

Ryan Renslow graduated from Washington State University with a Ph.D. in chemical engineering. His Ph.D. work was funded through the NIH Protein Biotechnology Fellowship. At PNNL, Ryan is working with Karl Mueller's group in the High Field Magnetic Resonance Facility in the Environmental Molecular Sciences Laboratory, and also with Jim Fredrickson of the Biological Sciences Division in the Earth & Biological Sciences Directorate.

The main focus of Ryan's research is the application of nuclear magnetic resonance techniques to study biofilms. Specifically he is trying to understand the electron transfer strategies of electrochemically-active biofilms. This entails coupling electrochemical and NMR techniques simultaneously, which is a capability that he is developing. NMR has the ability to change the way the biofilm processes is studied. The new tools being developed will allow researchers to interrogate biofilms at the microscale in a noninvasive manner. Understanding the biofilm mode of life is critical for making advances in human health and environmental microbiology.

Select Publications

  • Ha PT, RS Renslow, E Atci, PN Reardon, SR Lindemann, JK Fredrickson, DR Call, and H Beyenal. 2015. "Regulation of electron transfer processes affects phototrophic mat structure and activity." Frontiers in Microbiology 6:Article No. 909. doi:10.3389/fmicb.2015.00909
  • Harrington TD, JT Babauta, EK Davenport, RS Renslow, and H Beyenal. 2015. "Excess Surface Area in Bioelectrochemical Systems Causes ion Transport Limitations." Biotechnology and Bioengineering 112(5):858-866. doi:10.1002/bit.25500
  • Harrington TD, VN Tran, A Mohamed, RS Renslow, S Biria, L Orfe, DR Call, and H Beyenal. 2015. "The mechanism of neutral red-mediated microbial electrosynthesis in Escherichia coli: menaquinone reduction." Bioresource Technology 192:689-695. doi:10.1016/j.biortech.2015.06.037
  • Lone AG, E Atci, RS Renslow, H Beyenal, S Noh, B Fransson, N Abu-Lail, JJ Park, DR Gang, and DR Call. 2015. "Colonization of epidermal tissue by Staphylococcus aureus produces localized hypoxia and stimulates secretion of antioxidant and caspase-14 proteins." Infection and Immunity 83(8):3026-3034. doi:10.1128/IAI.00175-15
  • Lone AG, E Atci, RS Renslow, H Beyenal, S Noh, B Fransson, N Abu-Lail, JJ Park, DR Gang, and DR Call. 2015. "Staphylococcus aureus induces hypoxia and cellular damage in porcine dermal explants." Infection and Immunity 8(6):2531-2541. doi:10.1128/IAI.03075-14

Brian Miller — 2012 Pauling Fellow

Brian Miller

Brian Miller is an Adjunct Assistant Professor of Optical Sciences at The University of Arizona.

Brian received his Ph.D. from the University of Arizona in Optical Sciences in 2011. In 2008 he received the University of Arizona - Student Innovator of the Year Award for his work on the development of a high-resolution, CCD/CMOS-based gamma-ray detector for pre-clinical medical imaging applications.

While at PNNL, Brian's research areas focused on the continued development of high-spatial-resolution ionizing radiation detectors. In particular, he is investigating GasElectron Multipliers (GEMs) and their potential for neutron detection and imaging applications.

Select Publications

  • Dion MP, M Liezers, OT Farmer, III, BW Miller, SM Morley, CJ Barinaga, and GC Eiden. 2015. "Improving Alpha Spectrometry Energy Resolution by Ion Implantation with ICP-MS." Journal of Radioanalytical and Nuclear Chemistry 303(1):877-884. doi:10.1007/s10967-014-3500-8
  • Frost S, S Frayo, BW Miller, JJ Orozco, GC Booth, M Hylarides, Y Lin, DJ Green, AK Gopal, JM Pagel, T Back, DR Fisher, and OW Press. 2015. "Comparative Efficacy of 177Lu and 90Y for Anti-CD20 Pretargeted Radioimmunotherapy in Murine Lymphoma Xenograft Models." PLoS One 10(3):Article No. e0120561. doi:10.1371/journal.pone.0120561
  • Green DJ, M Shadman, JC Jones, S Frayo, AL Kenoyer, M Hylarides, DK Hamlin, DS Wilbur, ER Balkan, Y Lin, BW Miller, S Frost, AK Gopal, JJ Orozco, T Gooley, KL Laird, BG Till, T Back, BM Sandmaier, JM Pagel, and OW Press. 2015. "Astatine-211 conjugated to an anti-CD20 monoclonal antibody eradicates disseminated B-cell lymphoma in a mouse model." Blood 125(13):2111-2119. doi:10.1182/blood-2014-11-612770
  • McCloy JS, M Bliss, BW Miller, Z Wang, and SC Stave. 2015. "Scintillation and luminescence in transparent colorless single and polycrystalline bulk ceramic ZnS." Journal of Luminescence 157:416-423. doi:10.1016/j.jlumin.2014.09.015
  • Miller BW, S Frost, S Frayo, AL Kenoyer, EB Santos, JC Jones, DJ Green, DK Hamlin, DS Wilbur, DR Fisher, JJ Orozco, OW Press, JM Pagel, and BM Sandmaier. 2015. "Quantitative Single-Particle Digital Autoradiography with a-Particle Emitters for Targeted Radionuclide Therapy using the iQID Camera." Medical Physics 42(7):4094-4105. doi:10.1118/1.4921997

Priyanka Bhattacharya — 2012 Pauling Fellow

Priyanka Bhattacharya received her Ph.D. in Physics from Clemson University and Master of Science in Physics from the Indian Institute of Technology, India. She is the recipient of the 2012 Clemson University Board of Trustees, and the College of Engineering and Science Outstanding Graduate Researcher awards. She was awarded the 2011 Sigma Xi Grants-in-Aid-of-Research fellowship to conduct research with Professor Paul Dubin in the Department of Chemistry at the University of Massachusetts, Amherst, and received a Center for Optical Materials Science and Engineering Technologies Graduate Fellowship at Clemson University to complete a part of her Ph.D. dissertation under the supervision of Professor Pu Chun Ke in the Department of Physics and Astronomy.

Priyanka is working with Dr. Jiguang (Jason) Zhang and Dr. Daniel Gaspar in the Applied Materials Sciences division within the Energy and Environment Directorate. Her research is focused on improving the performance of Li-air and Li-S batteries by developing a fundamental understanding of the electrochemistry of battery materials that affect battery realization at the commercial scale. To achieve this goal, Priyanka is developing new hybrid electrode materials consisting of both soft and condensed nanomaterials that can efficiently increase the capacity and improve the cycling capability of batteries beyond Li-ion. The ultimate goal of her research is to tackle the fundamental operational challenges which are hindering the growth and commercialization of energy storage devices for high energy density applications.

Select Publications

  • Bao J, W Xu, P Bhattacharya, ML Stewart, J Zhang, and W Pan. 2015. "Discharge Performance of Li-O2 Batteries Using a Multiscale Modeling Approach ." Journal of Physical Chemistry C 119(27):14851-14860. doi:10.1021/acs.jpcc.5b01441
  • Chen J, D Wu, ED Walter, MH Engelhard, P Bhattacharya, H Pan, Y Shao, F Gao, J Xiao, and J Liu. 2015. "Molecular-Confinement of Polysulfide within Mesoscale Electrodes for the Practical Application of Lithium Sulfur Batteries." Nano Energy 13:267-274. doi:10.1016/j.nanoen.2015.01.031
  • DeFever RS, NK Geitner, P Bhattacharya, F Ding, PC Ke, and S Sarupria. 2015. "PAMAM dendrimers and graphene: Materials for removing aromatic contaminants from water."Environmental Science & Technology 49(7):4490-4497. doi:10.1021/es505518r
  • Lu D, Y Shao, TJ Lozano, WD Bennett, GL Graff, B Polzin, J Zhang, MH Engelhard, NT Saenz, WA Henderson, P Bhattacharya, J Liu, and J Xiao. 2015. "Failure Mechanism of Fast-Charged Lithium Metal Batteries in Liquid Electrolyte." Advanced Energy Materials 5(3):Article No. 1400993. doi:10.1002/AENM.201400993
  • Pan H, X Wei, WA Henderson, Y Shao, J Chen, P Bhattacharya, J Xiao, and J Liu. 2015. "On the way toward understanding solution chemistry of lithium polysulfides for high energy Li-S redox flow batteries." Advanced Energy Materials 5(16):Article No. 1500113. doi:10.1002/aenm.201500113

James Stegen — 2011 Pauling Fellow

James Stegen received his Ph.D. from the University of Arizona in Ecology and Evolutionary Biology in 2009.

James is a member of the Earth & Biological Sciences Directorate's Biological Sciences Division. His research area focuses on developing ecological models of microbial communities. In particular, he is leveraging multiple ecomics technologies to describe whole community function through time and space. This data will be used to develop process-based simulation models for predicting the effects of remediation strategies and environmental change on key ecosystem functions, such as subsurface contaminant transport.

Select Publications

  • Hurlbert AH, and JC Stegen. 2014. "When should species richness be energy-limited, and how would we know?" Ecology Letters 17(4):401-413. doi:10.1111/ele.12240
  • Bailey VL, SJ Fansler, JC Stegen, and LA McCue. 2013. "Linking Microbial Community Structure to ß-Glucosidic Function in Soil Aggregates." The ISME Journal 7(10):2044-2053. doi:10.1038/ismej.2013.87
  • Lindemann SR, JJ Moran, JC Stegen, RS Renslow, JR Hutchison, JK Cole, A Dohnalkova, J Tremblay, K Singh, S Malfatti, F Chen, S Tringe, H Beyenal, and JK Fredrickson. 2013. "The Epsomitic Phototrophic Microbial Mat of Hot Lake, Washington: Community Structural Responses to Seasonal Cycling." Frontiers in Microbiology 4:323. doi:10.3389/fmicb.2013.00323
  • Stegen JC, X Lin, JK Fredrickson, X Chen, DW Kennedy, CJ Murray, ML Rockhold, and A Konopka. 2013. "Quantifying Community Assembly Processes and Identifying Features that Impose Them." The ISME Journal 7:2069-2079. doi:10.1038/ismej.2013.93
  • Wang J, J Shen, Y Wu, C Tu, J Soininen , JC Stegen, J He, X Liu, L Zhang, and E Zhang. 2013. "Phylogenetic beta diversity in bacterial assemblages across ecosystems: deterministic versus stochastic processes." The ISME Journal 7(7):1310-1321. doi:10.1038/ismej.2013.30
  • Stegen JC, X Lin, A Konopka, and JK Fredrickson. 2012. "Stochastic and Deterministic Assembly Processes in Subsurface Microbial Communities." The ISME Journal 6(9):1653-1664. doi:10.1038/ismej.2012.22

Andreas Vasdekis — 2011 Pauling Fellow

Andreas Vasdekis

Andreas Vasdekis is an assistant professor in the Department of Physics at the University of Idaho.

Andreas received his Ph.D. from the University of St. Andrews (UK), exploring the photophysics and applications of conjugated polymers (2008). Following a short spell at the California Institute of Technology (Caltech), he became a junior scientist at the Ecole Polytechnique Fédérale de Lausanne (EPFL, Switzerland) for three years before moving to the Pacific Northwest National Laboratory.

His research interests generally lie at the interface of photonics, biophysics and materials. At PNNL, as a member of the Environmental Molecular Sciences LaboratVory, he investigated processes and interactions associated with biofuel synthesis by developing and applying precision biological measurement techniques in microfluidics.

Select Publications

  • Vasdekis AE, MJ Wilkins, JW Grate, RT Kelly, A Konopka, SS Xantheas, and MT Chang. 2014. "Solvent Immersion Imprint Lithography." Lab on a Chip 14(12):2072-2080. doi:10.1039/C4LC00226A
  • Vasdekis AE, EA Scott, S Roke, JA Hubbell, and D Psaltis. 2013. "Vesicle Photonics." Annual Review of Materials Research 43:283-305. doi:10.1146/annurev-matsci-071312-121724
  • Vasdekis AE. 2013. "Single microbe trap and release in sub-microfluidics." RSC Advances 3(18):6343-6346. doi:10.1039/C3RA40369F

Hui Wan — 2011 Pauling Fellow

Hui Wan

Hui Wan received her Ph.D. from the University of Hamburg in 2009. Her Ph.D. work was carried out at the Max Planck Institute for Meteorology in Hamburg, Germany on developing numerical methods for the next generation weather forecast and climate models. As a Ph.D. candidate, she also attended the International Max Planck Research School on Earth System Modeling. Hui has over half a dozen peer-reviewed papers and other publications accomplished. She was awarded the 2009 Otto Hahn Medal of the Max Planck Society and the 2009 Wladimir Peter Koppen Prize for Climate and Earth System Research from the University of Hamburg.

Hui's research focuses on understanding process interactions in the atmosphere and decreasing the uncertainty associated with component coupling in global climate.

Select Publications

  • Wan H, PJ Rasch, K Zhang, Y Qian, H Yan, and C Zhao. 2014. "Short ensembles: An Efficient Method for Discerning Climate-relevant Sensitivities in Atmospheric General Circulation Models." Geoscientific Model Development 7(5):1961-1977. doi:10.5194/gmd-7-1961-2014
  • Wan H, M Giorgetta, G Zangl, M Restelli, D Majewski, L Bonaventura, K Frohlich, D Reinert, P Ripodas, L Kornblueh, and J Forstner. 2013. "The ICON-1.2 Hydrostatic Atmospheric Dynamical Core on Triangular Grids - Part 1: Formulation and Performance of the Baseline Version." Geoscientific Model Development 6(3):735-763. doi:10.5194/gmd-6-735-2013
  • Wan H, PJ Rasch, K Zhang, J Kazil, and LYR Leung. 2013. "Numerical Issues Associated with Compensating and Competing Processes in Climate Models: an Example from ECHAM-HAM." Geoscientific Model Development 6(3):861-874. doi:10.5194/gmd-6-861-2013
  • Zhang K, D O'Donnell, J Kazil, P Stier, S Kinne, U Lohmann, S Ferrachat, B Croft, J Quaas, H Wan, S Rast, and J Feichter. 2012. "The global aerosol-climate model ECHAM-HAM, version 2: sensitivity to improvements in process representations." Atmospheric Chemistry and Physics 12(19):8911-8949. doi:10.5194/acp-12-8911-2012

Susan Wiedner — 2010 Pauling Fellow

Susan Wiedner received her Ph.D. in synthetic organic chemistry from the University of Michigan Department of Chemistry. She is a past recipient of a two-year NIH funded Chemical-Biology Interface Training grant.

Susan's research focus is on developing and integrating a subcellular chemical proteomics platform, using activity-based probes and subcellular fractionation, to facilitate the analysis of enzyme activity to promote the field of proteomics. This technology could lead to a better understanding of systems biology on the cellular level.

Select Publications

Marcel Baer — 2010 Pauling Fellow

Marcel Baer is is working to further develop our understanding of the important molecular interactions that give rise to novel phenomena in the vicinity of hydrophobic interfaces. His focus is on utilizing and developing less computationally intensive models that contain quantum mechanics and thus can describe chemistry. The ultimate goal is to develop a systematic approach to understanding the novel chemistry of interfaces, including heterogeneous catalysts.

Select Publications

  • Baer MD, and CJ Mundy. 2013. "An ab initio approach to understanding the specific ion effect." Faraday Discussions 160(0):89-101. doi:10.1039/C2FD20113E
  • Devanathan R, NB Idupulapati, MD Baer, CJ Mundy, and M Dupuis. 2013. "Ab initio molecular dynamics simulation of proton hopping in a model polymer membrane." Journal of Physical Chemistry B 117(51):16522-16529. doi:10.1021/jp410229u
  • Stern AC, MD Baer, CJ Mundy, and DJ Tobias. 2013. "Thermodynamics of Iodide Adsorption at the Instantaneous Air-Water Interface." Journal of Chemical Physics 138(11):114709. doi:10.1063/1.4794688
  • Tobias DJ, AC Stern, MD Baer, Y Levin, and CJ Mundy. 2013. "Simulation and Theory of Ions at Atmospherically Relevant Aqueous Liquid-Air Interfaces." Annual Review of Physical Chemistry 64:339-359. doi:10.1146/annurev-physchem-040412-110049
  • Baer MD, AC Stern, Y Levin, DJ Tobias, and CJ Mundy. 2012. "Electrochemical Surface Potential due to Classical Point Charge Models Drives Anion Adsorption to the Air-Water Interface." The Journal of Physical Chemistry Letters 3(11):1565-1570. doi:10.1021/jz300302t
  • Kimmel GA, MD Baer, NG Petrik, J VandeVondele, RJ Rousseau, and CJ Mundy. 2012. "Polarization- and Azimuth-Resolved Infrared Spectroscopy of Water on TiO2(110): Anisotropy and the Hydrogen-Bonding Network." The Journal of Physical Chemistry Letters 3(6):778-784. doi:10.1021/jz3001079
  • Baer MD, CJ Mundy, MJ McGrath, IFW Kuo, JI Siepmann, and DJ Tobias. 2011. "Re-Examining the Properties of the Aqueous Vapor-Liquid Interface Using Dispersion Corrected Density Functional Theory." Journal of Chemical Physics 135(12):Article No. 124712. doi:10.1063/1.3633239
  • Baer MD, TV Pham, JL Fulton, GK Schenter, M Balasubramanian, and CJ Mundy. 2011. "Is Iodate a Strongly Hydrated Cation?" The Journal of Physical Chemistry Letters 2(20):2650-2654. doi:10.1021/jz2011435
  • Baer MD, and CJ Mundy. 2011. "Toward an Understanding of the Speci?c Ion Effect using Density Functional Theory." The Journal of Physical Chemistry Letters 2(9):1088-1093. doi:10.1021/jz200333b
  • Lewis T, B Winter, AC Stern, MD Baer, CJ Mundy, DJ Tobias, and JC Hemminger. 2011. "Dissociation of strong acid revisited: X-ray photoelectron spectroscopy and molecular dynamics simulations of HNO3 in water." Journal of Physical Chemistry B 115(30):9445-9451. doi:10.1021/jp205510q
  • Lewis T, B Winter, AC Stern, MD Baer, CJ Mundy, DJ Tobias, and JC Hemminger. 2011. "Does Nitric Acid Dissociate at the Aqueous Solution Surface?" Journal of Physical Chemistry C 115(43):21183-21190. doi:10.1021/jp205842w

Dr. Grant Johnson

Grant Johnson — 2009 Pauling Fellow

Dr. Grant Johnson is a scientist in PNNL's Physical Computational Science Directorate. His research is focused within the Separations, Detection, and Analysis program with Laboratory Fellow Dr. Julia Laskin.

Dr. Johnson is developing unique capabilities for the controlled preparation and characterization of alloy nanoparticles (NPs) and clusters of precise composition. His research is employing oxygen reduction as a model reaction to investigate how the size, shape, elemental composition and support-interaction of alloy nanoparticles and clusters on surfaces influence their catalytic behavior. Utilizing these capabilities and fundamental insights into structure-reactivity relationships will allow the directed design of improved alloy nanoparticles and clusters for a broad range of applications in catalysis and energy storage.

Research Highlights

Dr. Xiao Lin

Xiao Lin — 2009 Pauling Fellow

Dr. Xiao Lin is now a Professor within the School of Physics at the University of Chinese Academy of Sciences.

Research Highlights

Linus Pauling Fellowship

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