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	<title>oxide-free crystallization &#8211; BIOENGINEER.ORG</title>
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	<title>oxide-free crystallization &#8211; BIOENGINEER.ORG</title>
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		<title>Potassium metal delivers record-low optical loss for next-generation plasmonics</title>
		<link>https://bioengineer.org/potassium-metal-delivers-record-low-optical-loss-for-next-generation-plasmonics/</link>
		
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		<pubDate>Tue, 06 Oct 2026 08:24:35 +0000</pubDate>
				<category><![CDATA[Chemistry]]></category>
		<category><![CDATA[alkali metals]]></category>
		<category><![CDATA[electron-phonon scattering]]></category>
		<category><![CDATA[light confinement]]></category>
		<category><![CDATA[nanophotonics]]></category>
		<category><![CDATA[optical loss]]></category>
		<category><![CDATA[oxide-free crystallization]]></category>
		<category><![CDATA[plasmonics]]></category>
		<category><![CDATA[potassium]]></category>
		<category><![CDATA[spectroscopic ellipsometry]]></category>
		<category><![CDATA[surface plasmon polaritons]]></category>
		<category><![CDATA[umklapp scattering]]></category>
		<category><![CDATA[waveguides]]></category>
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					<description><![CDATA[Researchers in China and the United States have shown that oxide-free crystalline potassium films with a record-low optical damping rate of 2.27 meV can act as ultralow-loss plasmonic metals, enabling deep subwavelength light confinement and a practical path toward the intrinsic low-loss limit of plasmonics.]]></description>
		
		
		
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