Semi-closed observational environment for electron microscope

A semi-closed environment for an electron microscope, comprising:

• a housing having at least two spacers for partitioning its internal space into a receiving chamber, at least one gas chamber covering upper and lower sides of said receiving chamber, and at least one buffer chamber located below said gas chamber, said receiving chamber having at least one view hole formed at each of a top side thereof and a bottom side thereof and located at one of said at least two spacers for communication with said gas chamber, said gas chamber having at least one gas aperture formed at each of a top side thereof and a bottom side thereof and located at the other spacer for communication with said buffer chamber, said buffer chamber having at least one outer aperture formed at a bottom side thereof and located at said housing for communication with outside, said at least two view holes being coaxially aligned with said at least two gas apertures and said at least one outer aperture, said housing further having a film mounted to and sealing said gas aperture located above the other, at least one gas inlet formed at one side of said gas chamber, and at least one pumping port formed at one side of said buffer chamber.

A semi-closed environment for an electron microscope, comprising:

• a housing having at least two spacers for partitioning its internal space into a receiving chamber, at least one gas chamber covering upper and lower sides of said receiving chamber, and at least one buffer chamber covering upper and lower sides of said gas chamber, said receiving chamber having at least one view hole formed at each of a top side thereof and a bottom side thereof and located at one of said at least two spacers for communication with said gas chamber, said gas chamber having at least one gas aperture formed at each of a top side thereof and a bottom side thereof and located at the other spacer for communication with said buffer chamber, said buffer chamber having at least one outer aperture formed at each of a top side thereof and a bottom side thereof and located at said housing for communication with outside, said at least two view holes, said at least two gas apertures, and said at least two outer apertures being coaxially aligned, said housing further having a film mounted to and sealing said outer aperture located above the other, at least one gas inlet formed at one side of said gas chamber, and at least one pumping port formed at one side of said buffer chamber.