The 5 kV operating voltage significantly increases the TEM image contrast, making it possible to minimize or avoid altogether the use of heavy metal stains that are usually a necessary evil in polymer transmission electron microscopy. The LVEM5 has proven to be particularly useful for the high contrast imaging of a wide variety of polymers, organic molecular thin films, and biological materials. We have obtained images on a variety of systems including polyethylene single crystals, pentacene and TIPS-pentacene thin films, block copolymers, and poly(3,4-ethylene dioxythiophene). We have also found it useful for imaging single dendrimer molecules, as well as a variety of inorganic nanoparticles.
TEM – Unstained
To read more and to see more images please head over to the Library Section of our website and download the application note. Download it here
Dr. David C. Martin is the Karl W. and Renate Böer Professor and Chair of Materials
Science and Engineering
Department of Materials Science and Engineering
The University of Delaware