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<p>molecular layer. It has been proposed that amines act as <a href="page.php?w=Lewis_bases">Lewis bases</a> and bind to <a href="page.php?w=Lewis_acids_and_bases">Lewis acidic</a> Cu surface sites in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> to form stable <a href="page.php?w=coordination_bond">coordination bond</a>s.</p>

<p><big>Mass production</big></p>
<p>In 1987, shortly after it was discovered, physicist and science author <a href="page.php?w=Paul_Grant_%28physicist%29">Paul Grant</a> published in the U.K. Journal <a href="page.php?w=New_Scientist">New Scientist</a></p><p>
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