The Gecko Hamaker open-source software project is a full implementation of the fully retarded Lifshitz formulations for isotropic and anisotropic plane-plane and cylinder-cylinder interactions with intervening interlayer materials, planar systems of up to 99 layers, and graded interfaces for the modeling of grain boundaries or other continuously changing systems, accompanied by a database of material optical properties spectra.
The machine-readable optical property database is available for download and as a web service and makes available the full spectral optical properties of over 150 materials from both ab initio calculations and experimental measurements.


  • Designed for various interaction morphologies : optically anisotropic cylinders, optically isotropic and anisotropic half-spaces, multi-layered half-spaces (up to 99 layers), and graded-interface half spaces.
  • Incorporating full spectral properties of over 150 materials including inorganic as well as organic materials such as SWCNTs, Type I collagen and (GC)10 duplex DNA spectra.

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User Reviews

  • The user instructions are rather confusing, the information at different pdf files is contradictory. It is not clear how to connect to the external database. The other option (download a database file and create your local database) is even worse. There are instructions on how to do that based on folders and files that are not really available.

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Additional Project Details



Intended Audience

Science/Research, Education

User Interface

X Window System (X11), Win32 (MS Windows), Cocoa (MacOS X)

Programming Language

C, Java

Database Environment

MySQL, SQL-based