William C. and Ruth Ann Dewel Microscopy Facility

Welcome to William C. and Ruth Ann Dewel - College of Arts & Sciences (Dewel-CAS) Microscopy Facility at Appalachian State University (ASU). We provide light microscopy, laser scanning confocal microscopy, and electron microscopy equipment and technical support to ASU and Appalachian Communities.


 New microscopes are in service

Zeiss LSM 880 with Airyscan and Definite Focus .2          (DBI-1625779)


JSM IT300LV SEM with EDS and EBSD (EAR-1625137)

News & Announcements

BIO4564/5564 Microscopy

This is course is designed for students to learn the principles and techniques of biological microscopy. Lectures include discussions on preparative techniques for various types of bioimaging and the optical theories behind the imaging technologies. Laboratories examine practical techniques of tissue preparation for various kinds of microscopy...

Biology Research Highlight


The Karatan lab studies biofilm formation by the human intestinal pathogen Vibrio cholerae. Biofilms are communities of bacteria that live mostly attached to surfaces. Bacteria in biofilms are more tolerant to a variety of environmental stressors. They have been implicated in survival of this bacterium in its natural aquatic environment as well as in the human host. Dr. Karatan is...

NSF award DBI-1625779 for a new laser scanning confocal microscope

Photo by Marie Freeman

ASU News

The College of Arts & Sciences


112 Rankin Science South
572 Rivers Street
Boone, NC 28608-2027

Dr. Guichuan Hou

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