{"id":54240,"date":"2016-12-04T06:30:22","date_gmt":"2016-12-03T22:30:22","guid":{"rendered":"\/\/m.iemloyee.com\/?p=54240"},"modified":"2016-11-30T12:39:09","modified_gmt":"2016-11-30T04:39:09","slug":"%e5%8e%a6%e9%97%a8%e5%a4%a7%e5%ad%a6nature%e5%ad%90%e5%88%8a%ef%bc%9aters%e5%af%b9%e5%8f%8c%e9%87%91%e5%b1%9e%e8%a1%a8%e9%9d%a2%e7%94%b5%e5%ad%90%e5%92%8c%e5%82%ac%e5%8c%96%e6%80%a7%e8%83%bd%e7%9a%84","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=54240","title":{"rendered":"\u53a6\u95e8\u5927\u5b66Nature\u5b50\u520a\uff1aTERS\u5bf9\u53cc\u91d1\u5c5e\u8868\u9762\u7535\u5b50\u548c\u50ac\u5316\u6027\u80fd\u7684\u63a2\u6d4b"},"content":{"rendered":"

\u3010\u5f15\u8bed\u3011<\/strong><\/p>\n

\u7814\u7a76\u53d1\u73b0\uff0c\u63a2\u9488\u5206\u5b50\u5728Pd\uff08\u4e9a\u5355\u5c42\uff09\/Au\uff08111\uff09\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u8868\u9762\u8fdb\u884cTERS\u626b\u63cf\uff0c\u53d1\u73b0\u5176\u53cd\u5e94\u6027\u80fd\u589e\u5f3a\u3002\u8be5\u6587\u7ae0\u5de7\u5999\u5229\u7528TERS\u5728\u5206\u5b50\u6216\u539f\u5b50\u6c34\u5e73\u4e0a\u8bbe\u8ba1\u7eb3\u7c73\u5c3a\u5ea6\u7684\u50ac\u5316\u5242\u3002<\/p>\n

\u5317\u4eac\u65f6\u95f411\u670821\u65e5\uff0cNature \u00a0Nanotechnology<\/em>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a\u201cProbing the electronic and catalytic properties of a bimetallic surface with 3 nm resolution\u201d\u7684\u6587\u7ae0\uff0c\u8bba\u6587\u901a\u8baf\u4f5c\u8005\u4e3a\u53a6\u95e8\u5927\u5b66\u7684\u4efb\u658c\u3002\u8be5\u8bba\u6587\u5229\u7528TERS\u5149\u8c31\u5bf9\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u8868\u9762\u8fdb\u884c\u4e86\u7814\u7a76\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8be5\u5c0f\u7ec4\u4ee5\u82ef\u57fa\u5f02\u8148\u4f5c\u4e3a\u63a2\u9488\u5206\u5b50\u5728Pd\uff08\u4e9a\u5355\u5c42\uff09\/Au\uff08111\uff09\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u8fdb\u884cTERS\u626b\u63cf\uff08\u5206\u8fa8\u7387\u4e3a3 nm\uff09\uff0c\u5e76\u89c2\u5bdf\u5230\u4e86\u4e00\u4e2aN\u2261C\u952e\u53d8\u5f31\uff0c\u63a8\u65ad\u51fa\u88ab\u5438\u9644\u5728Pd\u9636\u68af\u72b6\u8fb9\u7f18\u7684PIC\uff08\u662f\u82ef\u57fa\u5f02\u8148\u7684\u7f29\u5199\uff09\u53cd\u5e94\u6027\u80fd\u589e\u52a0\u3002\u91c7\u7528\u7684\u5bc6\u5ea6\u6cdb\u51fd\u65b9\u6cd5\u8bc1\u5b9e\u4e86\u8fd9\u4e00\u73b0\u8c61\uff1a\u9636\u68af\u8fb9\u7f18\u5177\u6709\u4f4e\u914d\u4f4d\u7684Pd\u539f\u5177\u6709\u66f4\u9ad8\u7684d\u7535\u5b50\u80fd\u5e26\u3002\u8be5\u56e2\u961f\u5f97\u5230\u76843 nm\u7a7a\u95f4\u5206\u8fa8\u7387\u56fe\uff0c\u4ea6\u8bf4\u660e\u4e86\u9636\u68af\u8fb9\u7f18\u5904\u7535\u573a\u589e\u5f3a\u4e14\u7535\u5b50\u6027\u8d28\u4e0d\u540c\u5bfb\u5e38\u3002<\/p>\n

\u672c\u6587\u6700\u5927\u7684\u521b\u65b0\u4e4b\u5904\u5728\u4e8e\u2014\u2014\u5229\u7528\u80fd\u591f\u63a2\u6d4b\u7279\u5b9a\u4f4d\u70b9\u7684TERS\u5728\u5206\u5b50\u6216\u539f\u5b50\u6c34\u5e73\u4e0a\u8bbe\u8ba1\u7eb3\u7c73\u5c3a\u5ea6\u7684\u50ac\u5316\u5242\u3002TERS\uff08\u662f\u5c16\u7aef\u589e\u5f3a\u62c9\u66fc\u5149\u8c31\u7684\u7f29\u5199\uff09\u805a\u96c6\u626b\u63cf\u63a2\u9488\u663e\u5fae\u955c\u4e0e\u7b49\u79bb\u5b50\u4f53\u589e\u5f3a\u62c9\u66fc\u6563\u5c04\u7684\u4f18\u70b9\u4e8e\u4e00\u8eab\uff0c\u5b83\u80fd\u540c\u65f6\u63d0\u4f9b\u7eb3\u7c73\u6216\u539f\u5b50\u5c3a\u5ea6\u7684\u8868\u9762\u5f62\u8c8c\u4e0e\u5316\u5b66\u7ec4\u6210\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u8303\u56f4\u4ece\u5916\u754c\u5230\u8d85\u9ad8\u771f\u7a7a\u4e0e\u7535\u5316\u5b66\u73af\u5883\u3002\u56e0\u6b64\u5e38\u88ab\u7528\u4e8e\u7814\u7a76\u5404\u79cd\u50ac\u5316\u6750\u6599\u7684\u7f3a\u9677\u3001\u9636\u68af\u72b6\u8fb9\u7f18\u3001\u5468\u8fb9\u63a5\u53e3\u7b49\u6027\u8d28\uff0c\u80fd\u5f88\u597d\u68c0\u6d4b\u5e76\u663e\u793a\u51fa\u5c40\u90e8\u7ed3\u6784\u4e0e\u975e\u5747\u76f8\u50ac\u5316\u5242\u529f\u80fd\u4e4b\u95f4\u7684\u5173\u8054\u3002\u6b64\u5916\uff0c\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\uff0c\u4f8b\u5982Pd-Au\u5728\u4e0d\u540c\u7684\u50ac\u5316\u53cd\u5e94\u4e2d\u663e\u793a\u51fa\u4f18\u5f02\u7684\u6027\u80fd\uff0c\u4f46\u7531\u4e8e\u5b83\u7ed3\u6784\u7684\u590d\u6742\u6027\u5b83\u5374\u4e0d\u80fd\u5f88\u597d\u7684\u628a\u7ed3\u6784\u4e0e\u53cd\u5e94\u6027\u80fd\u76f8\u4e92\u5173\u8054\u8d77\u6765\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 Pd\/Au<\/strong>\uff08<\/strong>111<\/strong>\uff09\u53cc\u91d1\u5c5e\u6a21\u578b\u50ac\u5316\u5242\u7684<\/strong>TERS<\/strong>\u7814\u7a76<\/strong>
\n<\/strong><\/p>\n

\"1\"<\/strong><\/p>\n

\uff08a\uff09\u4f7f\u7528Au\u5c16\u7aef\u4e0e\u8868\u9762\u4e0a\u8986\u76d6\u7740PIC\u7684Pd\/Au\uff08111\uff09\u886c\u5e95\u8fdb\u884cTERS\u626b\u63cf\uff08\u57fa\u4e8eSTM\uff09\u7684\u539f\u7406\u56fe<\/p>\n

\uff08b\uff09CV\u663e\u793aPd\uff08\u8fd8\u539f\u5cf0\u5728-0.005 V\uff09\u5728\u4e00\u4e2aAu\uff08111\uff09\u8868\u9762\u4e0a\u7684\u6b20\u7535\u4f4d\u6c89\u79ef\uff0c\u8be5\u57281 mM H2<\/sub>PdCl4<\/sub>\u4e0e0.1 M H2<\/sub>SO4<\/sub>\u6eb6\u6db2\u4e2d\u8fdb\u884c\uff0c\u626b\u63cf\u901f\u7387\u4e3a1 mV\u00b7s-1<\/sup>\u3002\u5cf0\u503c\u4e8e0.097 V\u5904\u5bf9\u5e94\u7684\u662fPd\u7684\u9633\u6781\u6eb6\u89e3\u3002<\/p>\n

\uff08c\uff09\u2014\uff08e\uff09\u672a\u8986\u76d6Au\uff08111\uff09\u9762\u7684STM\u56fe\u50cf\u3002\u5176\u4e2d\uff08c\uff09\u662fPd0.8ML<\/sub>\/Au(111)\uff1b\uff08d\uff09\u662fPdML<\/sub>\/Au(111)\uff1b\uff08e\uff09\u8868\u9762\u53ca\u5176\u5bf9\u5e94\u7684\u5c16\u7aef\u539f\u5b50\u6a21\u578b\u3002<\/p>\n

\uff08f\uff09\u2014\uff08h\uff09\u5728PIC\u5438\u6536\u540e\u5f62\u6210PIC\/Au(111)\u8868\u9762\u7684STM\u56fe\u50cf\u3002\uff08f\uff09PIC\/Pd0.8ML<\/sub>\/Au(111)\uff1b\uff08g\uff09PIC\/PdML<\/sub>\/Au\uff08111\uff09\uff1b\uff08h\uff09\u8868\u9762\u3002\u63d2\u56fe\u5728\u6240\u6709\u7684STM\u56fe\u4ee5\u4e0b\u662f\u5bf9\u5e94\u865a\u7ebf\u5207\u9762\u7684\u9ad8\u5ea6\u89e3\u5256\u56fe\u3002\u6240\u6709\u7684STM\u56fe\u50cf\u7531Pt\u2014Ir\u5c16\u7aef\u83b7\u5f97\u4e14\u90fd\u4e3a200 nm\u00d7200 nm\u7684\u89c4\u683c\u3002<\/p>\n

\u56fe<\/strong>2 PIC<\/strong>\u7684<\/strong>TERS<\/strong>\u5149\u8c31<\/strong><\/p>\n

\"2\"<\/strong><\/p>\n

\uff08a\uff09PIC\u5438\u6536\u4e8e\u4e00\u4e2aAu\uff08111\uff09\u9762\u7684TERS\u8c31\u56fe\uff080.4 mW\uff0c1 s\uff09\u3002<\/p>\n

\uff08b\uff09\u7406\u8bba\u5f97\u5230\u7684\u81ea\u7531PIC\u5206\u5b50\u7684Raman\u5149\u8c31\u3002<\/p>\n

\uff08c\uff09PIC\u5438\u9644\u5728PdML<\/sub>\/Au(111) \u9762\u7684TER\u8c31\u56fe\uff081.2 mW\uff0c1 s\uff09\u3002<\/p>\n

\u56fe<\/strong>3 Pd\/Au<\/strong>\uff08<\/strong>111<\/strong>\uff09\u53cc\u91d1\u5c5e\u8868\u9762\u7684<\/strong>TERS<\/strong>\u56fe\u50cf<\/strong>
\n<\/strong><\/p>\n

\"3\"<\/strong><\/p>\n

\uff08a\uff09\u8868\u793a\u5438\u9644\u4e86PIC\u7684Pd0.8ML<\/sub>\/Au(111)\u9762\u7684STM\u56fe\u50cf\u3002\u5176\u4f7f\u7528\u4e86\u91d1\u5236\u5c16\u7aef\uff0c\u4ece\u56fe\u4e2d\u592e\u7684\u6df1\u8272\u533a\u57df\u53ef\u89c1\u3002<\/p>\n

\uff08b\uff09\u6839\u636e\uff08a\uff09\u3001\uff08c\uff09\u6cbf\u7740\u865a\u7ebf\u5904\u7684\u7ebf\u6761\u75d5\u8ff9\u6bd4\u5bf9\u83b7\u5f97TERS\u8c31\u56fe\u3002\u4e09\u7ebf\u6bd4\u5bf9\u7684\u5f69\u8272\u7f16\u7801\u5f3a\u5ea6\u56fe\u4f9d\u7167\u987a\u5e8f\u5f97\u5230\u4e0d\u540c\u7684TERS\u56fe\u50cf\u3002\u4e3a\u4e86\u66f4\u597d\u89c2\u5bdf\u5230\u62c9\u66fc\u5f3a\u5ea6\u7684\u53d8\u5316\uff0c\u4f5c\u8005\u79fb\u53bb\u4e86\u80cc\u666f\u3002<\/p>\n

\uff08d\uff09\u4e09\u5927\u5e73\u9762\u56fe\uff1a\u5c16\u7aef\u5904\u4e3b\u8981\u4e09\u5927TERS\u5cf0\u7684\u5f3a\u5ea6\u5e73\u9762\u56fe\uff081,165, 1,590 \u4e0e1,995 cm\u22121<\/sup>\uff09\u3002\u8bef\u5dee\u7ebf\u6307\u793a\u4e09\u4e2a\u6d4b\u91cf\u6807\u51c6\u504f\u5dee\u3002\u5982\u56fe\uff08a\uff09\u6cbf\u865a\u7ebf\u7684\u8868\u9762\u5f62\u8c8c\u9ad8\u5ea6\u5206\u5e03\uff0c\u4e0e\u8868\u9762\u539f\u5b50\u7684\u539f\u5b50\u6a21\u578b\u53e0\u52a0\u3002\u5176\u4e2d\u539f\u5b50\u7684\u5c3a\u5bf8\u662f\u4ee5y\u8f74\u4e0a\u523b\u5ea6\u6765\u8861\u91cf\u800c\u4e0d\u662fx\u8f74\uff08\u7d2b\u8272\uff0c\u4ee3\u8868Pd\uff1b\u9ec4\u8272\uff0c\u4ee3\u8868Au\uff09\u3002\u8fc7\u6ee4\u51fa\u7684\u7b2c\u4e00\u5c42Au\u539f\u5b50\u5f62\u6210\u4e86\u9ad8\u5ea6\uff08\u4e3a6 \u00c5\uff09\u3002\u8be5\u6a21\u578b\u672a\u5305\u62ec\u5438\u9644\u4e8e\u8868\u9762\u7684PIC\u5206\u5b50\u3002<\/p>\n

\uff08e\uff09\u5f53\u5c16\u7aef\u5904\u4e8e\u4e00\u4e2aPd-Au-Pd\u8868\u9762\u4e0d\u540c\u4f4d\u7f6e\u65f6\uff0c\u8ba1\u7b97\u5176TERS\u589e\u52a0\u7684\u500d\u6570\u3002\uff08\u4ee5\u4e0a\u63d2\u56fe\uff1a\u8ba1\u7b97\u57fa\u5e95\u6a21\u578b\uff09\u3002\u4f5c\u8005\u5df2\u8003\u8651\u4e86\u8ba1\u7b97\u4e2d\u7535\u5b50\u8868\u9762\u6563\u5c04\u5bf9Pd\u539f\u5b50\u5c42\u5149\u5b66\u54cd\u5e94\u7684\u5f71\u54cd\uff08\u89c1\u8865\u5145\u90e8\u52068\uff09\u3002\uff08e\uff09\u4e2d\u7684\u7bad\u5934\u8bf4\u660e\u5c16\u7aef\u7684\u4f4d\u7f6e\u5206\u522b\u5728x=0\uff0c8\uff0c20 nm\u5904\u3002<\/p>\n

\uff08f\uff09\u5f53\u5c16\u7aef\u5728Au\uff08x=0 nm\uff09\u3001\u9636\u68af\u8fb9\u7f18\uff08x=8 nm\uff09\u4e0ePd\uff08x=20 nm\uff09\u8868\u9762\u5904\uff0cx\u2014z\u5e73\u9762\u7684\u8ba1\u7b97\u7684TERS\u5206\u5e03\u589e\u5f3a\u3002<\/p>\n

\u56fe<\/strong>4 Pd<\/strong>\u9636\u68af\u8fb9\u7684\u7535\u5b50\u6027\u8d28<\/strong>
\n<\/strong><\/p>\n

\u00a0\u00a0\u00a0\"4\"<\/strong><\/p>\n

\uff08a\uff09\u5c16\u7aef\u83b7\u5f97\u7684PIC\/Pd0.8ML<\/sub>\/Au(111) \u9762STM\u56fe\u50cf\u3002<\/p>\n

\uff08b\uff09\u6cbf\u7740\uff08a\uff09\u865a\u7ebf\u5904\u7684\u9ad8\u5ea6\u5256\u9762\u56fe\uff0c\u5176\u4e2d\u539f\u5b50\u7684\u5c3a\u5bf8\u662f\u4ee5y\u8f74\u4e0a\u523b\u5ea6\u6765\u8861\u91cf\u800c\u4e0d\u662fx\u8f74\u3002<\/p>\n

\uff08c\uff09\u7ebf\u6027\u626b\u63cfTERS\u8c31\u56fe\uff08\u7531\u4e0b\u5230\u4e0a\uff09\u4ecePd\u9636\u68af\u533a\u57df\u2014Pd\u9636\u68af\u8fb9\u7f18\u2014Au\u9636\u68af\u533a\u57df\uff08\u5982\u56fe\uff08a\uff09\u7eff\u8272\u7bad\u5934\u6240\u793a\uff09\u3002<\/p>\n

\uff08d\uff09\u7ebf\u6027\u626b\u63cfTERS\u8c31\u56fe\uff08\u7531\u4e0a\u5230\u4e0b\uff09\u4eceAu\u9636\u68af\u533a\u57df\u2014Pd\u9636\u68af\u8fb9\u7f18\u2014Pd\u9636\u68af\u533a\u57df\uff08\u5982\u56fe\uff08a\uff09\u4e2d\u7c89\u8272\u7bad\u5934\u6240\u793a\uff09\u3002\u5176\u4e2d\u5df2\u9664\u53bb\u80cc\u666f\u7684(c)\u4e0e\uff08d\uff09\u7684\u8c31\u56fe\u66f2\u7ebf\u5e73\u6ed1\uff0c\u5e76\u4e0eLorentz\u66f2\u7ebf\u8fdb\u884c\u62df\u5408\u5bf9\u6bd4\u3002\u62df\u5408\u533a\u57df\u4e2d1933cm-1<\/sup>\u7684\u5cf0\u6807\u6ce8\u5728\u6de1\u7ea2\u8272\u7684\u5cf0\u503c\u65c1\u8fb9\u3002<\/p>\n

\uff08e\uff09\u4e0e\uff08f\uff09\u5176\u4e2d\u56fe\uff08e\uff09\u4e0e\uff08f\uff09\u5206\u522b\u662f\u662f\u6a21\u62df\uff08e\uff09Pd\u9636\u68af\uff1b\uff08f\uff09\u5728Au\uff08111\uff09\u9762\u7684\u7535\u5b50\u7ed3\u6784\u539f\u5b50\u6a21\u578b\uff1b<\/p>\n

\uff08g\uff09\u8ba1\u7b97\u4e0d\u540c\u8868\u9762\u4f4d\u70b9\u5904\u7eaf\u51c0Pd\u539f\u5b50\u7684DOS\uff08\u5982\u56fe\uff08e\uff09\u4e0e\uff08f\uff09\u6240\u793a\uff09\u3002<\/p>\n

\uff08h\uff09HOMO\u20142\u7684DOS\u4e0e\u771f\u7a7a\u4e2dPIC\u5206\u5b50\u4e2dNC\u952e\u7684LUMO\uff08\u63d2\u56fe\u8868\u793a\uff1a\u5bf9\u5e94\u7684\u5206\u5b50\u8f68\u9053\u6ce2\u51fd\u6570\u7684\u7b49\u503c\u9762\uff09\u3002<\/p>\n

\uff08i\uff09\u5f53PIC\u88ab\u5438\u9644\u5728Pd\u9636\u68af\u4e0e\u9636\u68af\u8fb9\u7f18\u5904\u65f6\uff0c\u5206\u5b50\u8f68\u9053\u4e0a\u7684DOS\u3002\u5f53\u8fdb\u884c\u5206\u5b50\u8f68\u9053\u6295\u5f71\u65f6\uff0c\u6807\u6ce8\u6709#\u7684\u5cf0\u5219\u7531\u5206\u5b50\u6c34\u5e73\u4ea4\u53c9\u5f15\u8d77\u7684\u3002\uff08\u89c1\u8865\u5145\u90e8\u52063.5\uff09\u3002<\/p>\n

\uff08j\uff09\u9636\u68af\u7684\u6295\u5f71DOS\u4e0ePIC\u5438\u6536\u540e\u7684\u9636\u68af\u8fb9\u7f18Pd\u3002\u56fe\uff08i\uff09\u4e0e\uff08j\uff09\u4e2d\u5782\u76f4\u7684\u865a\u7ebf\u8868\u793a\u5206\u5b50\u8f68\u9053\uff08i\uff09\u4ee5\u53caPd\u539f\u5b50<\/p>\n

\uff08j\uff09\u7684DOS\u7684\u5339\u914d\u5cf0\u3002<\/p>\n

\u00a0<\/strong>\u3010\u603b\u7ed3\u3011<\/strong><\/p>\n

\u8be5\u8bba\u6587\u7740\u91cd\u4ecb\u7ecd\u5229\u7528TERS\u5149\u8c31\u5bf9\u53cc\u91d1\u5c5e\u50ac\u5316\u5242\u8868\u9762\u7684\u7535\u5b50\u548c\u50ac\u5316\u6d3b\u6027\u8fdb\u884c\u7814\u7a76\uff0c\u4e3a\u5206\u5b50\u6216\u539f\u5b50\u6c34\u5e73\u4e0a\u8bbe\u8ba1\u7eb3\u7c73\u5c3a\u5ea6\u7684\u50ac\u5316\u5242\u5f00\u8f9f\u5b9e\u9645\u53ef\u884c\u7684\u8def\u5f84\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5<\/strong>\uff1aProbing the electronic and catalytic properties of a bimetallic surface with 3 nm resolution<\/a>\uff08nature\u00a0 nanotechnology<\/em>, 2016, DOI: 10.1038\/NNANO.2016.241)<\/p>\n

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