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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=61" 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">科学家用DNA分子造出全球最小二极管 </h1> <p class="xg1"> 时间：2016-4-5 16:31<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1375)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4272&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 科技探索</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=61" 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>北京时间4月5日下午消息，佐治亚大学和以色列内盖夫本-古里安大学的研究人员利用DNA分子制造出了新型二极管。这被认为是全球尺寸最小的二极管。研究人员表示，这将促进DNA元件的开发，推动分子电子学的发展。</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">北京时间4月5日下午消息，佐治亚大学和以色列内盖夫本-古里安大学的研究人员利用DNA分子制造出了新型二极管。这被认为是全球尺寸最小的二极管。研究人员表示，这将促进DNA元件的开发，推动分子<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>学的发展。<div><br><div style="text-align: center;"><img src="http://www.oecr.com/data/attachment/portal/201604/05/162717rtoqb1qjqe1lwowt.jpg"></div><div style="text-align: center;"><br></div><div>二极管的功能是实现电流的单向流动。40多年前，科学家提出，可以将二极管和其他电子元器件小型化，缩小至单个分子大小。这促成了分子电子学的诞生，而分子电子学的研究成果有望推动计算机技术突破传统硅器件的限制。</div><div><br><div><div><div>在这项研究中，科学家利用DNA分子去制造二极管。基因科学的突破使精确设计DNA成为了可能，并使DNA成为了分子电子学研究中的最佳原<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>。</div><div><br></div><div>DNA的双螺旋结构由被称作碱基对的分子构成。这一新型二极管的长度只有11个碱基对。通常情况下，每个DNA碱基对的长度约为0.34<a href="http://material.oecr.com" target="_blank" class="relatedlink">纳米</a>。</div><div><br></div><div>DNA本身并不能发挥二极管的功能。不过，当研究人员向DNA内部某个位置插入2个小的Coralyne分子，并向其施加1.1伏电压时，可以发现通过该DNA二极管的电流在某一方向上要比另一方向强15倍。</div><div><br></div><div>科学家表示，这一DNA二极管可以进一步优化，从而开发出可提供实际功能的分子器件。这一研究成果发表在最近的《自然化学》期刊上。</div></div></div><div style="text-align: center;"><p><a href="data/attachment/portal/201604/05/162725pnn2t3203wupttp0.jpg" target="_blank"><img src="data/attachment/portal/201604/05/162725pnn2t3203wupttp0.jpg"></a></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:宋体;font-size:10.5000pt;mso-font-kerning:0.0000pt;">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 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id="comment_5422_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5422, '4272');">引用</a> </span> <a href="http://club.oecr.com/space-uid-35448.html" class="xi2 xw1" c="1">dli82000</a> <span class="xg1 xw0">2016-4-6 00:19</span> </dt> <dd>喜欢这里的配图。</dd> </dl><a name="comment_anchor_5420"></a> <dl id="comment_5420_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5420, '4272');">引用</a> </span> <a href="http://club.oecr.com/space-uid-88234.html" class="xi2 xw1" c="1">my.2009</a> <span class="xg1 xw0">2016-4-5 23:19</span> </dt> <dd>发发呆，回回帖，工作结束~</dd> </dl><a name="comment_anchor_5411"></a> <dl id="comment_5411_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5411, '4272');">引用</a> </span> <a href="http://club.oecr.com/space-uid-69411.html" class="xi2 xw1" 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