Heinrich Rohrer | Nobel Prize, Scanning Tunneling Microscope & Nanotechnology

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class="md-content"> <div class="md-article-container template-desktop"> <div class="infinite-scroll-container article last"> <article class="article-content container-lg qa-content px-0 pt-0 pb-40 py-lg-20 content " data-topic-id="506924"> <div class="grid gx-0"> <div class="col-auto"> <div class="topic-left-rail md-article-drawer position-relative d-flex border-right-sm border-left-sm open"> <div class="drawer d-flex flex-column open"> <div class="left-rail-section-content"> <div class="topic-left-rail-header text-truncate bg-gray-50 position-relative text-right d-flex align-items-center"> <div class="tlr-title px-20 py-15 text-left"> <em class="material-icons text-gray-400 d-lg-none" data-icon="toc"></em> <a class="font-serif font-weight-bold text-black link-blue" href="https://www.britannica.com/biography/Heinrich-Rohrer">Heinrich Rohrer</a> </div> <button aria-label="Close" class="js-sections-close-button btn-link btn-sm btn d-lg-none position-absolute top-0 p-10 right-0" > <em class="material-icons font-26" data-icon="close"></em> </button> </div> <div class="section-content pl-10 pr-20 pl-sm-50 pr-sm-60 pl-lg-5 pr-lg-10 pt-10 pt-lg-0 bg-gray-50 clear-catfish-ad"> <div class="toc mb-20"> <div class="font-serif font-14 font-weight-bold mx-15 mb-15 mt-20"> Table of Contents </div> <span class="toc-extra-link selected link-gray-900 mt-15"> Introduction </span> <a class="toc-extra-link link-gray-900" href="https://www.britannica.com/biography/Heinrich-Rohrer/additional-info">References & Edit History</a> <a class="toc-extra-link link-gray-900" href="/facts/Heinrich-Rohrer">Quick Facts & Related Topics</a> </div> <div class="mb-30 tlr-related-quizzes"> <div class="text-gray-900 p-5 font-serif font-14 font-weight-bold mx-10 mb-10"> Quizzes </div> <div class="imagelink-with-image-on-the-side card card-horizontal tlr-img-with-side-link ml-15 link-gray-900 mb-10" > <div class="position-relative card-media" style="flex: 0;"> <a class="ilf-image position-relative" 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They write new content and verify and edit content received from contributors.</div> </a> <div data-popper-arrow></div> </div> <span class="btn btn-link editor-link p-0 qa-byline-link gtm-byline font-12 byline-contributor text-decoration-underline"> The Editors of Encyclopaedia Britannica</span></div> <div class="last-updated font-12 font-serif"> <a class="byline-edit-history" href="https://www.britannica.com/biography/Heinrich-Rohrer/additional-info#history" rel="nofollow">Article History</a> </div></div> </div> <button class="d-flex d-lg-none btn btn-outline-blue border rounded-sm shadow-sm mobile-toc-button gtm-mobile-toc-inline-button d-none d-sm-block js-sections-inline-button module-spacing btn d-lg-none"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="toc"></em> Table of Contents </button> <div class="d-flex d-sm-none flex-row"> <button class="d-flex d-lg-none btn btn-outline-blue border rounded-sm shadow-sm mobile-toc-button gtm-mobile-toc-inline-button js-sections-inline-button module-spacing"> <em class="material-icons mr-5 ml-n10 my-n5 md-icon" data-icon="toc"></em> Table of Contents </button> <button class="ai-ask-button btn border-2 ai-ask-button btn border-2 module-spacing btn-sm js-inline-ai-ask-button btn-outline-red-400 border-red-400 p-10 ml-5"> Ask the Chatbot a Question </button> </div> <div class="js-qf-module qf-module px-40 px-sm-20 py-15 mx-auto module-spacing font-14 bg-gray-50 rounded"> <div class="qf-title font-weight-bold font-14 mb-10 text-center"> Quick Facts</div> <div class="facts-list mt-10"> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Born: </dt> <dd>June 6, 1933, Buchs, <a href="/place/Switzerland">Switzerland</a></dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> </div> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Died: </dt> <dd>May 16, 2013, Wollerau (aged 79)</dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> </div> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Awards And Honors: </dt> <dd><a href="/topic/Nobel-Prize">Nobel Prize (1986)</a></dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> </div> <div class=""> <div class="js-fact mb-10 line-clamp clamp-3"> <dl> <dt>Inventions: </dt> <dd><a href="/technology/scanning-tunneling-microscope" topicid="526582">scanning tunneling microscope</a></dd> </dl> <button class="js-more-btn d-none btn btn-unstyled font-12 bg-gray-50" aria-label="Toggle more/less fact data"> <em class="js-content link-blue">(Show more)</em> </button> </div> <div class="text-center"> <a class="btn btn-sm btn-link p-0" href="/facts/Heinrich-Rohrer"> See all related content </a> </div> </div> </div> </div><span class="marker before-article"></span><section data-level="1" id="ref1"><span class="marker PREMOD1 mod-inline"></span><p class="topic-paragraph"><strong><span id="ref265759"></span>Heinrich Rohrer</strong> (born June 6, 1933, Buchs, Switzerland—died May 16, 2013, Wollerau) was a Swiss physicist who, with <span id="ref265760"></span><a href="https://www.britannica.com/biography/Gerd-Binnig" class="md-crosslink " data-show-preview="true">Gerd Binnig</a>, received half of the 1986 <a href="https://www.britannica.com/topic/Nobel-Prize" class="md-crosslink autoxref " data-show-preview="true">Nobel Prize</a> for Physics for their joint <a href="https://www.britannica.com/technology/invention-technology" class="md-crosslink autoxref " data-show-preview="true">invention</a> of the scanning tunneling microscope. (<a href="https://www.britannica.com/biography/Ernst-Ruska" class="md-crosslink " data-show-preview="true">Ernst Ruska</a> received the other half of the prize.)</p><div class="one-good-fact-module"> </div><span class="marker MOD1 mod-inline"></span><span class="marker PREMOD2 mod-inline"></span><p class="topic-paragraph">Rohrer was educated at the Swiss Federal Institute of Technology in <a href="https://www.britannica.com/place/Zurich" class="md-crosslink autoxref " data-show-preview="true">Zürich</a> (B.S., 1955; Ph.D., 1960) and then did two years of postdoctoral research on superconductivity at <a href="https://www.britannica.com/topic/Rutgers-The-State-University-of-New-Jersey" class="md-crosslink autoxref " data-show-preview="true">Rutgers University</a>, New Brunswick, <a href="https://www.britannica.com/place/New-Jersey" class="md-crosslink autoxref " data-show-preview="true">New Jersey</a>. Rohrer subsequently returned to <a href="https://www.britannica.com/place/Switzerland" class="md-crosslink autoxref " data-show-preview="true">Switzerland</a>, and in 1963 he joined the IBM Research laboratory, where he remained until his retirement in 1997. Binnig joined the laboratory in 1978, and it was there that the two men designed and built the first <span id="ref127171"></span><a href="https://www.britannica.com/technology/scanning-tunneling-microscope" class="md-crosslink " data-show-preview="true">scanning tunneling microscope</a>. This instrument is equipped with a tiny tungsten probe whose tip, only about one or two atoms wide, is brought to within five or ten atoms’ distance of the surface of a conducting or semiconducting material. (An atom is equal to about one angstrom, or one ten-billionth of a metre.) When the <a href="https://www.britannica.com/science/electric-potential" class="md-crosslink autoxref " data-show-preview="true">electric potential</a> of the tip is made to differ by a few volts from that of the surface, <a class="md-dictionary-link md-dictionary-tt-off mw" data-term="quantum" href="https://www.merriam-webster.com/dictionary/quantum" data-type="MW">quantum</a> mechanical effects cause a measurable <a href="https://www.britannica.com/science/electric-current" class="md-crosslink autoxref " data-show-preview="true">electric current</a> to cross the gap. The strength of this current is extremely sensitive to the distance between the probe and the surface, and, as the probe’s tip scans the surface, it can be kept a fixed distance away by raising and lowering it so as to hold the current constant. A record of the elevation of the probe is a topographical map of the surface under study, on which the <a class="md-dictionary-link md-dictionary-tt-off mw" data-term="contour" href="https://www.merriam-webster.com/dictionary/contour" data-type="MW">contour</a> intervals are so small that the individual atoms making up the surface are clearly recognizable.</p><span class="marker MOD2 mod-inline"></span></section> <span class="md-signature">This article was most recently revised and updated by <a href="/contributor/encyclopaedia-britannica/12989892">Encyclopaedia Britannica</a>.</span><span class="marker end-of-content"></span><span class="marker after-article"></span></div> <div id="chatbot-root"></div> </div> </div> </div> <div class="ai-dialog-placeholder"></div> </div> </div> <aside class="col-md-da-320"></aside> </div> </div> </div> </div> </article></div> </div></div> </div> </main> <div id="md-footer"></div> <noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-5W6NC8" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <script type="text/javascript" id="_informizely_script_tag"> var IzWidget = IzWidget || {}; (function (d) { var scriptElement = d.createElement('script'); scriptElement.type = 'text/javascript'; scriptElement.async = true; scriptElement.src = "https://insitez.blob.core.windows.net/site/f780f33e-a610-4ac2-af81-3eb184037547.js"; var node = d.getElementById('_informizely_script_tag'); node.parentNode.insertBefore(scriptElement, node); } )(document); </script>  <script> window.ap3c = window.ap3c || {}; var ap3c = window.ap3c; ap3c.cmd = ap3c.cmd || []; ap3c.cmd.push(function() { ap3c.init('ZO4siT4cLwnykPnzZWJtd3Byb2Q', 'https://engage.email.britannica.com/'); ap3c.track({v: 0}); }); ap3c.activity = function(act) { ap3c.act = (ap3c.act || []); ap3c.act.push(act); }; var s, t; s = document.createElement('script'); s.type = 'text/javascript'; s.src = "https://engage.email.britannica.com/app.js"; t = document.getElementsByTagName('script')[0]; t.parentNode.insertBefore(s, t); </script> <script class="marketing-page-info" type="application/json"> {"pageType":"Topic","templateName":"DESKTOP","pageNumber":1,"pagesTotal":1,"pageId":506924,"pageLength":277,"initialLoad":true,"lastPageOfScroll":false} </script> <script class="marketing-content-info" type="application/json"> [] </script> <script src="https://cdn.britannica.com/mendel-resources/3-130/js/libs/jquery-3.5.0.min.js?v=3.130.14"></script> <script type="text/javascript" data-type="Init Mendel Code Splitting"> (function() { $.ajax({ dataType: 'script', cache: true, url: 'https://cdn.britannica.com/mendel-resources/3-130/dist/topic-page.js?v=3.130.14' }); })(); </script> <script class="analytics-metadata" type="application/json"> {"leg":"A","adLeg":"A","userType":"ANONYMOUS","pageType":"Topic","pageSubtype":null,"articleTemplateType":"BIO_MEDIUM","gisted":false,"pageNumber":1,"hasSummarizeButton":false,"hasAskButton":false} </script> <script type="text/javascript"> EBStat={accountId:-1,hostnameOverride:'webstats.eb.com',domain:'www.britannica.com', json:''}; </script> <script type="text/javascript"> ( function() { $.ajax( { dataType: 'script', cache: true, url: '//www.britannica.com/webstats/mendelstats.js?v=1' } ) .done( function() { try {writeStat(null,EBStat);} catch(err){} } ); })(); </script> <div id="bc-fixed-dialogue"></div> </body> </html>

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Heinrich Rohrer | Nobel Prize, Scanning Tunneling Microscope & Nanotechnology | Britannica