Reading and writing data and metadata using the Hierarchical Data Format (HDF5) file format.
Hierarchical Data Format, Version 5, (HDF5) is a general-purpose, machine-independent standard for storing scientific data in files, developed by the National Center for Supercomputing Applications (NCSA).
Working with Non-ASCII Characters in HDF5 Files
MATLAB® support for non-ASCII data and metadata in HDF5 files.