SPI Supplies® Brand Indium-Tin-Oxide (ITO) Coated Microscope Slides
Selection of the substrate material
Select from the following choices in substrate materials:
- Float glass (soda lime)
These are what are generally called "normal microscope slides" and
are available either as a) polished or b) unpolished.
The main reason one would worry about polishing, if if they needed to have
the ultimate in surface flatness, since that parameter is improved greatly
as a result of the polishing. We can report the following specifications
for flatness:
- Unpolished:
Typical surface roughness is <0.15 µm/20 mm, peak to peak, for 1.1 mm microscope slides
- Polished:
Typical surface roughness is <0.05 µm/20 mm, peak to peak, for 0.7 mm microscope slides
- Fused quartz
All quartz microscope slides are fabricated from GE 124 and are
the same quartz slides that have been offered by SPI Supplies for a number of years
and which are used routinely by researchers all over the world.
The question of flatness often times arises and the SPI quartz slides are
made to a typical flatness of 2-4 "bands" per in., but quartz in 1 mm
thickness can bend under its own weight. When placing an optical flat on top to measure
flatness, the slide or cover slip will conform to the flat, but when on top
of an optical flat, it does not weigh enough to flatten itself out. We are told that slides and
cover slips can not be made with greater flatness than 2-4 "bands" per in.
- Plastic
We are still developing this part of the product line.
- Polymer film
We can offer polyester (PET) film in 200x200mm x 0.2 mm in
thickness. These ITO-coated films have the major advantage of being able to
be bent to extremely small radii of curvature (less than 10 mm) without even
the slightest hint of deterioration of the ITO-coating. This is made
possible, at least in part, because of the superior SPI Supplies technology
in terms of adhesion of the ITO coating to the PET substrate. This form of
our ITO coating technology is of value to anyone in need of flexible,
transparent electrodes. These ITO-coated PET substrates can be cut down to
their needed size with a GEM razor blade or good scissors.
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Monday February 06, 2012
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