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<p><a href="page.php?w=Ion_implantation">ion implanters</a>, and <a href="page.php?w=ion_engines">ion engines</a>.</p>

<p>As reactive charged particles, they are also used in <a href="page.php?w=Air_ioniser">air purification</a> by disrupting microbes, and in household items such as <a href="page.php?w=smoke_detector">smoke detector</a>s.</p>

<p>As signalling and metabolism in organisms are controlled by a precise ionic gradient across <a href="page.php?w=cell_membrane">membranes</a>, the disruption of this gradient contributes to cell death.</p><p>
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