AEI has moved<p>🌟 New selected research highlight 🌟</p><p>Tunable highly reflective metasurfaces – International team led by <span class="h-card" translate="no"><a href="https://wisskomm.social/@unihannover" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>unihannover</span></a></span> researchers demonstrate wavelength-selective metamirrors based on sapphire and silicon nanoparticles</p><p>Metasurfaces are sheet materials with artificial structures smaller than the electromagnetic wavelength with which they interact. A new study led by researchers at the Institute for Gravitational Physics at <span class="h-card" translate="no"><a href="https://wisskomm.social/@unihannover" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>unihannover</span></a></span>, Germany, presents the first experimental validation of the feasibility of realizing a reflective metasurface at selected wavelengths. The metasurface presented in this study is based on a single-layer nanoparticle array consisting of silicon cylinders on a sapphire substrate. The fabricated structures have a reflectivity of about 95% (at 1064 nm or 1550 nm), which can be improved by further optimization of the fabrication and characterization processes. This technology has the potential to be used in future gravitational-wave detectors. There, single-layer reflective surfaces mitigate coating thermal noise, an important source of instrumental disturbance.</p><p>ℹ️ <a href="https://www.aei.mpg.de/1202212/tunable-highly-reflective-metasurfaces" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">aei.mpg.de/1202212/tunable-hig</span><span class="invisible">hly-reflective-metasurfaces</span></a><br>📄 <a href="https://onlinelibrary.wiley.com/doi/10.1002/adpr.202400116" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">onlinelibrary.wiley.com/doi/10</span><span class="invisible">.1002/adpr.202400116</span></a> (Open Access)</p><p><a href="https://astrodon.social/tags/metasurface" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>metasurface</span></a> <a href="https://astrodon.social/tags/photonics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>photonics</span></a> <a href="https://astrodon.social/tags/metamirrors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>metamirrors</span></a> <a href="https://astrodon.social/tags/GravitationalWaveDetectors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GravitationalWaveDetectors</span></a> <a href="https://astrodon.social/tags/research" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>research</span></a></p>
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#metamirrors
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AEI has moved<p>🌟 Neues Forschungshighlight 🌟</p><p>Tunable highly reflective metasurfaces – International team led by <span class="h-card" translate="no"><a href="https://wisskomm.social/@unihannover" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>unihannover</span></a></span> researchers demonstrate wavelength-selective metamirrors based on sapphire and silicon nanoparticles</p><p>Metasurfaces are sheet materials with artificial structures smaller than the electromagnetic wavelength with which they interact. A new study led by researchers at the Institute for Gravitational Physics at <span class="h-card" translate="no"><a href="https://wisskomm.social/@unihannover" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>unihannover</span></a></span>, Germany, presents the first experimental validation of the feasibility of realizing a reflective metasurface at selected wavelengths. The metasurface presented in this study is based on a single-layer nanoparticle array consisting of silicon cylinders on a sapphire substrate. The fabricated structures have a reflectivity of about 95% (at 1064 nm or 1550 nm), which can be improved by further optimization of the fabrication and characterization processes. This technology has the potential to be used in future gravitational-wave detectors. There, single-layer reflective surfaces mitigate coating thermal noise, an important source of instrumental disturbance.</p><p>ℹ️ <a href="https://www.aei.mpg.de/1202729/tunable-highly-reflective-metasurfaces" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">aei.mpg.de/1202729/tunable-hig</span><span class="invisible">hly-reflective-metasurfaces</span></a> (englisch)<br>📄 <a href="https://onlinelibrary.wiley.com/doi/10.1002/adpr.202400116" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">onlinelibrary.wiley.com/doi/10</span><span class="invisible">.1002/adpr.202400116</span></a> (Open Access)</p><p><a href="https://astrodon.social/tags/metasurface" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>metasurface</span></a> <a href="https://astrodon.social/tags/photonics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>photonics</span></a> <a href="https://astrodon.social/tags/metamirrors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>metamirrors</span></a> <a href="https://astrodon.social/tags/GravitationalWaveDetectors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GravitationalWaveDetectors</span></a> <a href="https://astrodon.social/tags/research" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>research</span></a></p>
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