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l-tyrosine (L-Tyr) films with an oblique columnar structure were prepared by the Knudsen cell effusion method. The L-Tyr films were formed at a Knudsen cell temperature that was sufficiently lower than the decomposition temperature of L-Tyr. As the heating rate controlled by DC current is increased, the molecular network constructed of hydrogen bonds tends to collapse, and the film density and surface...
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