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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">如何使用超材料操纵光？ </h1> <p class="xg1"> 时间：2023-12-8 09:47<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(452)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9923&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>超材料是一种具有独特性能的人工工程材料，它们被设计用于以不同于传统材料的方式与电磁波相互作用。超材料最有前途的应用之一是对光的操纵，对其行为提供前所未有的控制。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">超<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>是一种具有独特性能的人工工程材料，它们被设计用于以不同于传统材料的方式与电磁波相互作用。超材料最有前途的应用之一是对光的操纵，对其行为提供前所未有的控制。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">本文探讨了操纵光的超材料的设计和制造，深入研究了其基本原理、最近的进展和潜在的应用。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; letter-spacing: 0px; font-family: PingFangSC-Semibold; line-height: 30px;">什么是超材料？</strong></p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">传统材料与光的相互作用是基于其固有的特性，如折射率和吸收，而超材料的光学特性来自其亚波长结构安排，这些结构安排经过精心设计，表现出独特的电磁响应，从而可以在<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>尺度上精确控制光的操纵。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; letter-spacing: 0px; font-family: PingFangSC-Semibold; line-height: 30px;">设计过程</strong></p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">其亚波长结构的几何形状、排列和组成决定了超材料的性质，为了对这些材料的行为进行建模和预测，研究人员采用了先进的模拟技术，如有限元分析（FEA）和计算电磁学。例如，超材料设计的一个关键方面是实现负折射率，允许光在与传统材料相反的方向上进行操作，从而导致超透镜和隐形等新型光学现象。实现负折射率需要对超材料结构进行精确的工程设计，通常涉及具有独特形状和方向的单元电池。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; letter-spacing: 0px; font-family: PingFangSC-Semibold; line-height: 30px;">制造技术</strong></p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">超材料设计从<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>概念到有形结构的成功转化依赖于先进的制造技术。科学家们已经开发了几种制造超材料的方法，每种方法都有自己的一套优点和局限性。例如，光刻技术已经适用于超材料制造<a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>，该工艺涉及使用光将图案从掩膜转移到基板上的光敏化学光刻胶，以高精度创建亚波长结构的复杂图案。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">同样，<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>束光刻提供比光刻更高的分辨率，通过聚焦电子束来选择性地暴露抗蚀剂材料，从而创建复杂而详细的超材料结构，从而可以制造出非常精细的特征。然而，这是一个比光刻慢的过程，通常用于小规模生产。另一种用于大规模生产超材料的相对较新的、成本较低的技术是纳米压印光刻技术，该技术包括将具有所需图案的模具压入聚合物材料中，然后将其固化以形成最终结构。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; letter-spacing: 0px; font-family: PingFangSC-Semibold; line-height: 30px;">超材料在光操纵中的应用</strong></p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">在纳米尺度上控制和操纵光的能力为超材料在各个领域的许多应用开辟了道路。例如，超材料有可能通过弯曲周围的光使物体不可见。这个被称为光学隐形的概念吸引了研究人员，并在军事、监视甚至<a href="http://medicine.oecr.com" target="_blank" class="relatedlink">医疗</a>领域得到了应用。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">负折射率的超材料，可以创造出超越传统光学的衍射极限的超级透镜，允许比传统透镜更精细的成像细节，这对显微镜和医学成像的进步具有重要意义。同样，超材料可以设计成高精度聚焦和引导光，这在光束整形、电信和先进的光学元件中都有应用。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: PingFangSC-Regular; font-size: 16px; background-color: rgb(255, 255, 255);">超材料独特的光学特性也使它们成为增强<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">传感</a>和检测技术的优秀候选者。基于超材料的传感器，可以检测和识别极低浓度的物质，使其在环境监测和医疗保健中具有价值。</p><p style="margin: 0px; padding: 0px 0px 1em; border: 0px; line-height: 2; text-indent: 2em; font-family: 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</div></div></div></div></div><!--[/diy]--> </div> <!--[diy=diycontentrelate]--><div id="diycontentrelate" class="area"></div><!--[/diy]--> <div id="comment" class="bm"> <div class="bm_h cl"> <a href="javascript:;" class="y xi2" onclick="location.href=location.href.replace(/(\#.*)/, '')+'#cform';$('message').focus();return false;">发表评论</a> <h3>最新评论</h3> </div> <div id="comment_ul" class="bm_c"> <p class="ptm pbm"><a href="http://www.oecr.com/portal.php?mod=comment&id=9923&idtype=aid" class="xi2">查看全部评论(<em id="_commentnum">5</em>)</a></p><form id="cform" name="cform" action="portal.php?mod=portalcp&ac=comment" method="post" autocomplete="off"> <div class="tedt"> <div class="area"> <textarea name="message" rows="3" class="pt" id="message" onkeydown="ctrlEnter(event, 'commentsubmit_btn');"></textarea> </div> </div> <div class="mtm"><span id="secqaa_qSwuaJsA"></span> <script type="text/javascript" reload="1">updatesecqaa('qSwuaJsA', '<sec> <span id="sec<hash>" 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value="true" class="pn"><strong>评论</strong></button></p> </form> <a name="comment_anchor_34043"></a> <dl id="comment_34043_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(34043, '9923');">引用</a> </span> <a href="http://club.oecr.com/space-uid-95609.html" class="xi2 xw1" c="1">cy_lyp</a> <span class="xg1 xw0">2023-12-8 10:47</span> </dt> <dd>天气不错，我就是路过。</dd> </dl><a name="comment_anchor_34042"></a> <dl id="comment_34042_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(34042, '9923');">引用</a> </span> <a href="http://club.oecr.com/space-uid-33870.html" class="xi2 xw1" c="1">hwangchunyu</a> <span class="xg1 xw0">2023-12-8 10:47</span> </dt> <dd>这也没什么吧。</dd> </dl><a name="comment_anchor_34041"></a> <dl id="comment_34041_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(34041, '9923');">引用</a> </span> <a href="http://club.oecr.com/space-uid-33599.html" class="xi2 xw1" c="1">myjasmine</a> <span class="xg1 xw0">2023-12-8 10:17</span> </dt> <dd>本性流露永远胜过豪言壮语。</dd> </dl><a name="comment_anchor_34040"></a> <dl id="comment_34040_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(34040, '9923');">引用</a> </span> <a href="http://club.oecr.com/space-uid-49405.html" class="xi2 xw1" c="1">lgb5460</a> <span class="xg1 xw0">2023-12-8 09:47</span> </dt> <dd>光电好难学啊，我得努力了！</dd> </dl><a name="comment_anchor_34039"></a> <dl id="comment_34039_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(34039, '9923');">引用</a> </span> <a href="http://club.oecr.com/space-uid-34255.html" class="xi2 xw1" c="1">激光学者</a> <span class="xg1 xw0">2023-12-8 09:47</span> </dt> <dd>站位支持</dd> </dl></div> </div> 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