Case Study #3: Use of Nomarski phase interference contrast microscopy capability of the metallographic microscope to indicate areas of damage and subsequent chemical attack or contamination in anti-reflective coatings on optical elements or delamination failures

Image of the Week - March 2, 2015

CIL:39035 -

Description: A Nomarski differential interference microscopy image illustrating the frustule (silica cell wall) of a marine centric, Aulacodiscus formosus diatom (unicellular alga). Diatoms are photosynthesising algae that live in most aquatic environments, both fresh and salt water. They are non-motile and are restricted to shallow waters as they require sunlight for photosynthesis. A centric diatom is one that displays radial symmetry. More diatom images are available as CIL:39032-39034.

Author: Spike Walker

Licensing: Attribution-NonCommercial-NoDerivs 2.0 UK: England & Wales (CC BY-NC-ND 2.0 UK)