Lee Penn works with synthetic and naturally-occurring nanocrystalline materials. She is particularly interested in how these materials grow, dissolve, assemble, and transform. The following images are high resolution images taken using the new Philips CM300 Transmission Electron Microscope located in Earth and Planetary Sciences.
Click on the images for high resolution view:
High resolution TEM micrograph showing a single crystal of synthetic anatase (TiO2). This unique morphology is the result of crystal growth by topotactic assembly. This material was synthesized by Gerko Oskam from Materials Science and Engineering at JHU: