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Microscopy Program

The Microscopy Program operates four scanning microscopy beamlines at the ALS that offer a materials analysis capability to a diverse community of scientists. Our scanning microscopes operate with 30 nm spatial resolution in conventional imaging mode and as high as 5 nm with ptychographic imaging. This spatial resolution is readily coupled with various environmental sample cells (e.g. electrochemical, heating, fluid flow, cryo, and tomography). The x-ray spectrum of our beamlines span 200 to 2500 eV, allowing for chemical analysis using the absorption K-edges of light elements, L-edges of transition metals, and M/N-edges of heavy elements. X-ray spectromicroscopy at these energies allows, for instance, quantitative nanoscale mapping of oxidation states in transition metals or, when circular polarization is used, the structure of nanoscale magnetic domains. Our community of users includes researchers from energy, materials, life, and earth sciences.

Beamlines

Personnel

ALS Staff

David Shapiro

Senior Scientist, Program Lead

Alex Ditter

Research Scientist

Matthew Marcus

Staff Scientist

Hendrik Ohldag

Staff Scientist

Doctoral and Postdoctoral Researchers

  • Thomas Feggeler
    ALS Postdoc (2021- )
    Time-resolved STXM

  • Vanessa Schoeppler
    NSF STROBE Postdoc (2019- ), UC Berkeley
    X-ray and electron microscopy of bio-minerals

Program Alumni

  • Wonyoul Choi
    Visiting Scholar, Gangneung-Wongju National University of Korea

  • Bjoern Enders, Computer Software Engineer, Computational Research Division, Berkeley Lab
    ALS Postdoctoral Scholar (2016-2019)

  • Donggun Eum
    Visiting Scholar, Seoul National University of Korea

  • Maryam Farmand, Materials Characterization Scientist, Entegris
    ALS Postdoctoral Scholar (2013-2015)

  • Jong-Ryul Jeong
    Visiting Scholar, Chungnam National University of Korea

  • Sung-Kyun Jung
    Visiting Scholar, Seoul National University of Korea

  • Sam Kalirai, Zeiss X-ray Microscopy
    ALS Postdoctoral Affiliate (2017-2019)

  • Chunjoong Kim
    Visiting Scholar, Chungnam National University of Korea

  • Jiaqi Li
    ALS Postdoc, UC Berkeley
    STXM and PEEM of bio-materials

  • Kasra Nowrouzi, Postdoctoral Scholar, Computational Research Division, Berkeley Lab
    ALS Doctoral Fellow (2014-2019)

  • Jungjin Park, Postdoctoral Scholar, Stanford University
    ALS Postdoctoral Affiliate (2016-2019), Stanford University

  • Nark Eon Sung
    Visiting Scholar, Pohang Accelerator Laboratory

  • Mi Yoo
    Visiting Scholar, Chungnam National University of Korea

  • Young-Sang Yu, Assistant Professor, Chungbuk National University
    ALS Research Scientist (2015-2021)
    ALS Collaborative Postdoctoral Fellow (2013-2015), University of Illinois Chicago

  • Jiangtao Zhao, Postdoctoral Scholar, Southern University of Science and Technology, China
    ALS Visiting Doctoral Affiliate (2018-2019)