SAN DIEGO, USA: Filmetrics has announced the web’s most complete public database of refractive index values for use in thin film thickness measurements, as well as a free refractive index measurement service. Without accurate refractive index values for each material being measured, optical-based thickness measurements are inaccurate or even impossible.
The new database and measurement service are finding use across a broad range of applications, including many in the semiconductor, solar, display, and biomedical industries. Filmetrics president Dr. Scott Chalmers stated, “The first full week our database was online it averaged over 200 visitors a day. This demonstrates the large number of people requiring this information to perform their job.”
Filmetrics instruments determine film thickness by illuminating the film with white light and measuring the spectrum reflected off of the film. The wavelength ranges are available between 200-1700 nm. Once the spectrum is collected, the Filmetrics software analyzes it to determine thickness, optical constants, and other user-selectable parameters.