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<div class="ss"><div><span>导读： </span>来自伦敦帝国理工学院的研究人员、俄罗斯科学家以及喀山联邦大学的工程师们共同合作，描述了一种电光现象的可能性，可望为光储存介质提高数十倍的信息储存密度。</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"><div> 为光储存介质提高数十倍的信息储存密度。来自伦敦帝国理工学院（London’s Imperial College）的研究人员、俄罗斯科学家以及喀山联邦大学（Kazan Federal University）的工程师们共同合作，描述了一种电光现象的可能性，可望为光（optical）储存介质提高数十倍的信息储存密度。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201702/04/112110x14h19141197p9r9.jpg" target="_blank"><img src="data/attachment/portal/201702/04/112110x14h19141197p9r9.jpg"></a></p></div><div><br></div><div> 在录写介质上聚焦光点的限制（即衍射效应），一直限制着数据储存可实现的密度。如今，由帝国理工学院化学工程系教授Sergei Kazarian为主导的研究队据称够克服这一难题。根据该研究团队表示，相较于硬盘、闪存（Flash）以及其他固态硬盘（SSD），包括DVD或蓝光（BluRay）等光储存介质至今在容量方面仍明显远落于后。由于所谓的“衍射极限”（diffraction limit）效应带来的限制，使得光储存途径无法实现较高的数据储存密度。</div><div><br></div><div> <b><font color="#f00000"> “衍射极限”是一种<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>现象，指的是无法将光束聚焦于尺寸小于光波长（以蓝光为例，其波长约400nm）的物体表面上。因此，在全光学的储存介质上录写信息的密度明显比不上磁盘或<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>记录写系统。</font></b></div><div><br></div><div> 根据这项研究结果<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>，透过使用两种物质——基于偶氮苯（azobenzene）的有机染料，以及一种特殊的光天线，可将录写密度提高到相当于每平方英吋约数百TB （terabyte）。研究人员们发现，在电场中以雷射光照射在偶氮苯分子上，将会导致其发生翻转。这使得染料分子的光学特性发生变化，使其得以作为信息载体。透过这种方式，研究人员得以利用偶氮苯<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">薄膜</a>，打造出“破坏”衍射极限的光学内存。</div><div><br></div><div> 此外，研究人员并利用<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>天线，从这种薄膜中开发出一种可录写与读取信息的方法。这种纳米天线会吸收雷射光、放大并聚焦在你想要写入或读取信息之处。<span style="line-height: 1.8em;">Kazarian说：“随着这一技术的进一步改善，我们可以达到每平方英吋约PB （petabyte）级的数据储存密度。换句话说，传统依尺寸区分的磁盘将可容纳较现代DVD更高1百万倍的信息，也比目前最大容量的硬盘<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>容纳更高几百倍的储存容量。因此，我们可望解决未来如何储存数据量日益成长的问题，尤其是因应像视讯或物联网（IoT）等应用的需求。”这项研究已发表于《Nanoscale》期刊中。</span></div><div><span style="line-height: 1.8em;"><br></span></div><div><p style="text-align: center;"><a href="data/attachment/portal/201702/04/112157wlwkaa3d3kc0fdh7.jpg" target="_blank"><img src="data/attachment/portal/201702/04/112157wlwkaa3d3kc0fdh7.jpg"></a></p><p style="text-align: center;"><br></p><p style="text-align: center;"><span style="line-height: 25.2px;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" class="relatedlink">科普</a>等精彩内容，欢迎交换友情链接</span><span style="line-height: 25.2px;">(</span><b style="line-height: 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