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TEM study of nacre platelets. (a) TEM micrograph of a TEM thin cut of the aragonite platelets in nacre. (Scale bar: 1 µm.) (b) Power spectrum of the HRTEM micrograph in c. The crystal is oriented along the [023] direction. (c) HRTEM micrograph of a selected surface area of the single crystalline aragonite platelets. (Scale bar: 5 nm.)
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