AFM substrates, V2 grade mica sheets
AFM substrates, V2 grade mica sheets
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Grade V2
0.23 to 0.3mm thick
Sheets interleaved
Freshly cleaved muscovite mica surfaces have an outstanding even surface, are optically flat, clear, transparent, scratchless and free from fingerprints. They are very useful in electron microscopy for production of carbon support films, particle imaging, cell growing and thin film coating research. Muscovite mica surface are also suitable as substrates for high resolution atomic force microcopy studies such as DNA, DNA-protein and thin films.
Cleaving mica involves insertion of a sharp edge or point into an edge or corner of the sheet and gently prying apart the leaves. A good sharp razor blade edge will do the job and in some cases a sharp pointed tweezer may accomplish this.. The freshly exposed micro surface should be used immediately after cleaving to take advantage of the clean and even surface. The muscovite mica is die cut to the sizes offered. The thickness of the mica sheets varies between 0.18 - 0.25mm which yields much thinner, uniform sheets.
Cleaving can also be achieved by placing a double coated piece of tape onto the mica surface and gently pulling off the mica layer starting on one edge of the mica. Then place mica with tape side down on to a specimen disc or mount. Muscovite mica cleaves on the {001} plane. Ruby muscovite colour ranges from almost white through pink to a light ruby and into shades of brownish ruby and brown. It is considered of higher quality (compared to green muscovite) because of hardness and excellent cleavage properties permitting it to be split into the thinnest desired film without the risk of cracking. It is optically flat, resilient and incompressible. While it splits into thin films along its cleavage planes, it remains tough and elastic, even at high temperatures. Chemically, mica is a complex hydrous silicate of aluminium, containing potassium, magnesium, iron, sodium fluoride and/or lithium and traces of other elements. It is stable and inert to water, acids (except hydrofluoric and concentrated sulphuric acids), alkalis, conventional solvents and oil. Our mica has minimum inclusions, minimum air and bubbles and is clean. ASTM D-351 describes grading standards for mica.
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