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Volume EM Group

Kedar Narayan, Ph.D.

Senior Scientist, Group Leader

Kedar Narayan is the group leader for the volume EM group at the CMM. He earned a Ph.D. in immunology, and has a research background in chemistry, pathology, and biophysics. Kedar’s work focuses on the use of emerging technologies for cellular imaging. At CMM, he is responsible for FIB-SEM and array tomography, technology development and for driving collaborative projects that use FIB-SEM, array tomography and correlative imaging approaches to explore cellular mechanisms.

Irene Chang, Ph.D.

Scientist I

Irene Chang earned her Ph.D. in materials science and engineering, with an emphasis on biological materials. She has research experience in the characterization of cell properties and behaviors, including migration and proliferation. Her work at the CMM focuses on developing new EM sample preparation techniques and instrumentation to study tissue ultrastructure.

Adam Harned

Research Associate III

Adam Harned is an electron microscopist with extensive industry and research experience concerning the applications of VP-SEM, FE-SEM and TEM technologies for both biological and materials samples. His main role will be assisting in the collection of FIB-SEM data.

Kunio Nagashima

Scientist II

Kunio Nagashima has extensive experience developing techniques for preparation of tissue and cellular samples for transmission and scanning electron microscopy. He specializes in the analysis of biological samples by EM and related technologies..

Ryan Conrad

Research Associate I

Ryan Conrad works as a research associate and image analyst for the volume EM group at the CMM. Ryan earned his B.Sc. in physics from Boston College with a focus on spectroscopy and optics. His work at the CMM focuses on developing computational tools that accelerate and enhance the segmentation, analysis and visualization of FIB-SEM data.

Past Lab Members


Allison Baker (Post-bac, RA) Patrick Acquino (SIP)


Alexis Adkins (WHK-SIP) Jacqueline Chung (WHK-SIP)


Kiley Duncan (SIP) Brandon Shim (WHK-SIP)


Catherine Henry (Post-bac)