{"id":230197,"date":"2021-11-28T06:30:49","date_gmt":"2021-11-27T22:30:49","guid":{"rendered":"\/\/m.iemloyee.com\/?p=230197"},"modified":"2021-11-27T22:09:04","modified_gmt":"2021-11-27T14:09:04","slug":"%e9%ba%bb%e7%9c%81%e7%90%86%e5%b7%a5nature-nanotechnology-%e8%ae%a9%e9%87%8f%e5%ad%90%e7%82%b9%e5%81%9c%e6%ad%a2%e9%97%aa%e7%83%81","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=230197","title":{"rendered":"\u9ebb\u7701\u7406\u5de5Nature Nanotechnology: \u8ba9\u91cf\u5b50\u70b9\u505c\u6b62\u95ea\u70c1"},"content":{"rendered":"
\u5f15\u8a00<\/b><\/strong><\/p>\n \u91cf\u5b50\u70b9\u4e8e\u4e0a\u4e16\u7eaa90\u5e74\u4ee3\u88ab\u53d1\u73b0\uff0c\u91cf\u5b50\u70b9\u662f\u7531\u534a\u5bfc\u4f53\u6750\u6599\u5236\u6210\u7684\u76f4\u5f84\u53ea\u6709\u51e0\u7eb3\u7c73\u7684\u5fae\u5c0f\u7c92\u5b50\uff0c\u5176\u7535\u5b50\u7684\u80fd\u7ea7\u4e4b\u95f4\u6709\u201c\u5e26\u9699\u201d\u3002\u5f53\u8fd9\u4e9b\u6750\u6599\u4ece\u7167\u5c04\u5b83\u4eec\u7684\u5149\u7ebf\u4e2d\u83b7\u5f97\u80fd\u91cf\u65f6\uff0c\u7535\u5b50\u53ef\u4ee5\u8df3\u5230\u66f4\u9ad8\u7684\u80fd\u5e26;\u5f53\u5b83\u4eec\u6062\u590d\u5230\u4e4b\u524d\u7684\u6c34\u5e73\u65f6\uff0c\u80fd\u91cf\u4ee5\u5149\u5b50\u7684\u5f62\u5f0f\u91ca\u653e\u51fa\u6765\uff0c\u5149\u5b50\u662f\u4e00\u79cd\u5149\u7684\u7c92\u5b50\u3002\u8fd9\u79cd\u5149\u7684\u9891\u7387\u51b3\u5b9a\u4e86\u5b83\u7684\u989c\u8272\uff0c\u53ef\u4ee5\u901a\u8fc7\u9009\u62e9\u70b9\u7684\u5f62\u72b6\u548c\u5c3a\u5bf8\u6765\u7cbe\u786e\u5730\u8c03\u6574\u3002\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u6700\u8457\u540d\u7684\u53ef\u80fd\u662f\u5728\u4e00\u4e9b\u9ad8\u7aef\u7535\u89c6\u4e0a\u4ea7\u751f\u9c9c\u8273\u7684\u8272\u5f69\u3002<\/p>\n \u9664\u4e86\u663e\u793a\u5c4f\uff0c\u91cf\u5b50\u70b9\u8fd8\u53ef\u4ee5\u7528\u4e8e\u592a\u9633\u80fd\u7535\u6c60\u3001\u6676\u4f53\u7ba1\u3001\u6fc0\u5149\u5668\u548c\u91cf\u5b50\u4fe1\u606f\u8bbe\u5907\u3002\u4f46\u5728\u4e00\u4e9b\u6f5c\u5728\u7684\u7528\u9014\u4e0a\uff0c\u4f8b\u5982\u8ffd\u8e2a\u836f\u7269\u4e0e\u6d3b\u7ec6\u80de\u76f8\u4e92\u4f5c\u7528\u65f6\u7684\u751f\u5316\u9014\u5f84\uff0c\u8fdb\u5c55\u5374\u53d7\u5230\u4e86\u4e00\u4e2a\u4f3c\u4e4e\u65e0\u6cd5\u63a7\u5236\u7684\u7279\u5f81\u7684\u963b\u788d:\u8fd9\u79cd\u7279\u5f81\u6709\u968f\u673a\u95f4\u9694\u6d88\u5931\u7684\u503e\u5411\u3002\u5f53\u8fd9\u4e9b\u70b9\u88ab\u96c6\u4e2d\u4f7f\u7528\u65f6(\u5982\u5728\u7535\u89c6\u5c4f\u5e55\u4e2d)\uff0c\u8fd9\u5e76\u4e0d\u91cd\u8981\uff0c\u4f46\u5bf9\u4e8e\u7cbe\u786e\u5e94\u7528\u6765\u8bf4\uff0c\u8fd9\u53ef\u80fd\u662f\u4e00\u4e2a\u91cd\u5927\u7f3a\u9677\u3002\u8fd9\u79cd\u95ea\u70c1\u73b0\u8c61\u572820\u4e16\u7eaa90\u5e74\u4ee3\u9996\u6b21\u88ab\u89c2\u5bdf\u5230\uff0c\u5f53\u65f6\u91cf\u5b50\u70b9\u521a\u88ab\u5236\u9020\u51fa\u6765\u4e0d\u4e45\u3002\u56e0\u6b64\uff0c\u4eba\u4eec\u82b1\u4e86\u5f88\u591a\u7cbe\u529b\u8bd5\u56fe\u901a\u8fc7\u8bbe\u8ba1\u91cf\u5b50\u70b9\u548c\u73af\u5883\u4e4b\u95f4\u7684\u754c\u9762\u6765\u6d88\u9664\u5b83\uff0c\u6216\u8005\u901a\u8fc7\u6dfb\u52a0\u5176\u4ed6\u5206\u5b50\u3002\u4f46\u8fd9\u4e9b\u4e1c\u897f\u90fd\u4e0d\u662f\u5f88\u597d\uff0c\u4e5f\u4e0d\u662f\u5f88\u5bb9\u6613\u590d\u5236\u3002\u8fd9\u79cd\u95ea\u70c1\u73b0\u8c61\u7684\u539f\u56e0\u53ef\u80fd\u4e0e\u989d\u5916\u7684\u7535\u8377\u6709\u5173\uff0c\u6bd4\u5982\u9644\u52a0\u5728\u91cf\u5b50\u70b9\u5916\u5c42\u7684\u989d\u5916\u7535\u5b50\uff0c\u6539\u53d8\u4e86\u91cf\u5b50\u70b9\u7684\u8868\u9762\u6027\u8d28\uff0c\u4ece\u800c\u6709\u5176\u4ed6\u9014\u5f84\u91ca\u653e\u989d\u5916\u7684\u80fd\u91cf\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u53d1\u5149\u3002\u5728\u771f\u5b9e\u7684\u73af\u5883\u4e2d\uff0c\u5404\u79cd\u5404\u6837\u7684\u4e8b\u60c5\u90fd\u53ef\u80fd\u53d1\u751f\uff0c\u6bd4\u5982\uff0c\u5728\u91cf\u5b50\u70b9\u8868\u9762\u7684\u67d0\u4e2a\u5730\u65b9\uff0c\u53ef\u80fd\u6709\u4e00\u4e2a\u7535\u5b50\u9644\u7740\u5728\u5b83\u4e0a\u9762\u3002\u91cf\u5b50\u70b9\u4e0d\u518d\u662f\u7535\u4e2d\u6027\u7684\uff0c\u800c\u662f\u5e26\u6709\u4e00\u4e2a\u51c0\u7535\u8377\uff0c\u800c\u5b83\u4ecd\u7136\u53ef\u4ee5\u901a\u8fc7\u53d1\u5c04\u5149\u5b50\u56de\u5230\u57fa\u6001\u3002\u4e0d\u5e78\u7684\u662f\uff0c\u989d\u5916\u7684\u7535\u8377\u4e5f\u4e3a\u7535\u5b50\u7684\u6fc0\u53d1\u6001\u8fd4\u56de\u57fa\u6001\u800c\u4e0d\u53d1\u5c04\u5149\u5b50\u6253\u5f00\u4e86\u5f88\u591a\u989d\u5916\u7684\u8def\u5f84\u3002\u4f46\u5f53\u7528\u4e2d\u7ea2\u5916\u5149\u7167\u5c04\u65f6\uff0c\u989d\u5916\u7684\u7535\u8377\u5f80\u5f80\u4f1a\u4ece\u8868\u9762\u8131\u843d\uff0c\u4ece\u800c\u4f7f\u91cf\u5b50\u70b9\u4ea7\u751f\u7a33\u5b9a\u7684\u8f90\u5c04\u5e76\u505c\u6b62\u95ea\u70c1<\/b><\/u><\/strong>\u3002<\/p>\n \u6210\u679c\u7b80\u4ecb<\/b><\/strong><\/p>\n \u8fd1\u65e5\uff0c\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u7684Keith A. Nelsonhe\u548cMoungi G. Bawendi\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/b><\/strong>\u56e2\u961f\u60f3\u51fa\u4e86\u4e00\u79cd\u65b9\u6cd5\u6765\u63a7\u5236\u8fd9\u79cd\u4e0d\u5fc5\u8981\u7684\u95ea\u70c1\uff0c\u800c\u4e0d\u9700\u8981\u5bf9\u914d\u65b9\u6216\u5236\u9020\u8fc7\u7a0b\u8fdb\u884c\u4efb\u4f55\u4fee\u6539\u3002\u901a\u8fc7\u5728\u6781\u77ed\u7684\u65f6\u95f4\u5185\u53d1\u5c04\u4e00\u675f\u4e2d\u7ea2\u5916\u6fc0\u5149\u2014\u2014\u4e00\u4e07\u4ebf\u5206\u4e4b\u4e00\u79d2\u2014\u2014\u91cf\u5b50\u70b9\u7684\u95ea\u70c1\u5728\u4e00\u4e2a\u76f8\u5bf9\u8f83\u957f\u7684\u5468\u671f\u5185\u88ab\u6d88\u9664\u4e86\uff0c\u6bd4\u6fc0\u5149\u8109\u51b2\u957f\u6570\u767e\u4ebf\u500d\u3002\u7ed3\u679c\u8868\u660e\uff0c\u4e2d\u573a\u8d85\u5feb\u4e2d\u7ea2\u5916\u8109\u51b2(5.5\u03bcm, 150 fs)\u53ef\u4ee5\u5c06CdSe\/CdS\u6838\u58f3\u91cf\u5b50\u70b9\u7684\u53d1\u5c04\u4ece\u5e26\u7535\u7684\u4f4e\u91cf\u5b50\u4ea7\u7387\u7070trion\u6001\u8f6c\u6362\u4e3a\u660e\u4eae\u7684\u6fc0\u5b50\u6001\uff0c\u4ece\u800c\u663e\u8457\u964d\u4f4e\u4e86\u91cf\u5b50\u70b9\u7684\u4eae\u5ea6\u95ea\u70c1\u3002\u91cf\u5b50\u96a7\u7a7f\u6a21\u62df\u8868\u660e\uff0c\u4e2d\u7ea2\u5916\u573a\u4ee5\u964d\u4f4e\u53d1\u5c04\u91cf\u5b50\u4ea7\u7387\u7684\u65b9\u5f0f\u6d88\u9664\u4e86\u7535\u5b50\u4e2d\u591a\u4f59\u7684\u7535\u8377\uff0c\u4ece\u800c\u6062\u590d\u4e86\u9ad8\u4eae\u5ea6\u7684\u6fc0\u5b50\u53d1\u5c04\u3002\u65b0\u7684\u65b9\u6cd5\u89e3\u51b3\u4e86\u4e00\u4e2a\u957f\u671f\u5b58\u5728\u7684\u95ee\u9898\uff0c\u5373\u963b\u788d\u4e86\u5728\u751f\u7269\u6210\u50cf\u6216\u91cf\u5b50\u5149\u5b50\u5b66\u4e2d\u4f7f\u7528\u5fae\u5c0f\u7684\u5149\u53d1\u5c04\u5668\u7684\u95f4\u6b47\u6027\u95ee\u9898\u3002\u8be5\u6210\u679c\u4e8e\u8fd1\u65e5\u53d1\u8868\u5728Nature Nanotechnology\u4e0a\u3002<\/p>\n \u56fe\u6e90\uff1aMIT News<\/p>\n \u56fe\u6587\u5bfc\u8bfb<\/b><\/strong><\/p>\n \u56fe1. \u5b9e\u9a8c\u65b9\u6848\u53ca\u5355\u70b9\u9a8c\u8bc1<\/p>\n a,\u5bf9\u5355\u4e2aCdSe\/CdS QD\u8fdb\u884c\u4e86MIR\u8109\u51b2\u6fc0\u53d1\u548c\u5404\u79cdPL\u63a2\u9488\u7684\u793a\u610f\u56fe\uff0c\u5305\u62ecPL\u5f3a\u5ea6\u3001PL\u5149\u8c31\u548c(\u7528\u8109\u51b2\u800c\u975e\u8fde\u7eed\u5149\u6fc0\u53d1)\u65f6\u95f4\u5206\u8fa8(TR)PL\u5bff\u547d\u6d4b\u91cf\u3002<\/p>\n b,\u5728\u4f20\u7edf\u7684PL\u95ea\u70c1\u6a21\u578b\u4e2d\uff0c\u5f00\u5173\u5468\u671f\u5206\u522b\u5bf9\u5e94\u4e8e\u4e2d\u6027\u7eb3\u7c73\u6676(\u6fc0\u5b50)\u548c\u8377\u7535\u7eb3\u7c73\u6676(Trion)\u3002<\/p>\n c, MIR\u8109\u51b2\u7684\u9891\u8c31\u96c6\u4e2d\u5728~5.5\u03bcm\u5904\uff0c\u5e26\u5bbd\u4e3a~0.5\u00a0\u03bcm\u00b7A.U.\u3002<\/p>\n d,\u4e8c\u9636PL\u5f3a\u5ea6\u76f8\u5173\u51fd\u6570\u3002<\/p>\n \u56fe2.\u5355\u4e2a\u91cf\u5b50\u70b9\u7684MIR\u95ea\u70c1\u63a7\u5236\u3002<\/p>\n a,\u6ca1\u6709MIR\u6fc0\u53d1\u7684\u5355\u4e2a\u91cf\u5b50\u70b9\u7684\u4ee3\u8868\u6027PL\u95ea\u70c1\u75d5\u8ff9\u3002<\/p>\n b,\u76f4\u65b9\u56fe\u8868\u793a\u5728\u6ca1\u6709MIR\u6fc0\u53d1\u7684\u60c5\u51b5\u4e0b\u89c2\u5bdf\u5230\u7684\u5f3a\u5ea6\u5206\u5e03\u3002<\/p>\n c,MIR\u6fc0\u53d1\u4e0b\u5355\u4e2a\u91cf\u5b50\u70b9\u7684PL\u95ea\u70c1\u75d5\u8ff9\u3002<\/p>\n d,\u76f4\u65b9\u56fe\u8868\u793aMIR\u6fc0\u53d1\u540e\u6240\u89c2\u5bdf\u5230\u7684\u5f3a\u5ea6\u5206\u5e03\u3002<\/p>\n e-i, MIR\u5bf9\u591a\u4e2a(~100)\u5b64\u7acb\u91cf\u5b50\u70b9PL\u5f3a\u5ea6\u7684\u5e73\u5747\u63a7\u5236\u3002<\/p>\n \u56fe3. MIR\u573a\u6539\u53d8\u5355\u4e2a\u91cf\u5b50\u70b9\u7684PL\u5bff\u547d\u3001\u95ea\u70c1\u7edf\u8ba1\u548c\u9891\u8c31\u3002<\/p>\n a,b\uff0c\u6709\u548c\u6ca1\u6709MIR\u6fc0\u53d1\u7684\u5355\u4e2a\u91cf\u5b50\u70b9\u7684\u8367\u5149\u5bff\u547d\u5f3a\u5ea6\u5206\u5e03\u3002<\/p>\n c\uff0c\u72ec\u7acb\u7684\u5355\u4e2a\u91cf\u5b50\u70b9\u5728\u5e73\u8861\u72b6\u6001(\u84dd\u8272)\u548c\u6bcf\u96941\u79d2\u7684MIR\u6fc0\u53d1\u671f\u95f4\u7684OFF-time\u95ea\u70c1\u7edf\u8ba1\u6570\u636e\uff0c\u6bcf\u4e2a\u5468\u671f\u670980\u4e2a\u8109\u51b2(\u7ea2\u8272)\u3002<\/p>\n d\uff0c\u5e73\u8861\u65f6(\u84dd\u8272)\u548cMIR\u6fc0\u53d1\u65f6(\u7ea2\u8272)\u5b64\u7acb\u91cf\u5b50\u70b9\u7684\u5b9e\u65f6\u95ea\u70c1\u7edf\u8ba1\u6570\u636e\u3002<\/p>\n e\uff0c\u6ca1\u6709\u548c\u6709MIR\u6fc0\u53d1\u7684PL\u5149\u8c31\u3002<\/p>\n f\uff0c\u5dee\u5206PL\u5149\u8c31(MIR\u5f00- MIR\u5173)\u663e\u793a\u5149\u8c31\u84dd\u79fb\u548c\u7a84\u5316\u3002<\/p>\n g\uff0c\u573a\u4f9d\u8d56\u6027\u7684MIR\u8bf1\u5bfc\u5149\u8c31\u53d8\u5316\u663e\u793a\u4ea4\u53c9\u884c\u4e3a\u3002<\/p>\n \u56fe4. \u4e0d\u540c\u58f3\u5c42\u539a\u5ea6\u91cf\u5b50\u70b9\u7684MIR\u54cd\u5e94\u3002<\/p>\n a, \u5177\u67098(\u7ea2\u8272)\u300110(\u7c89\u8272)\u548c14(\u84dd\u8272)ML\u58f3\u5c42\u539a\u5ea6\u7684\u7cfb\u7efc\u91cf\u5b50\u70b9\u7684PL\u5bff\u547d\u3002<\/p>\n B, \u6eb6\u6db2BXQY\u6d4b\u91cf\u7684\u5b9e\u9a8c\u65b9\u6848\u3002<\/p>\n c, 8 ML QDs\u7684\u6eb6\u6db2BXQY\u6570\u636e\u3002<\/p>\n d,\u00a010\u548c14 ML\u91cf\u5b50\u70b9\u7684\u5149\u5b66\u901a\u91cf\u548cMIR\u573a\u5f3a\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n e, 14 ML\u91cf\u5b50\u70b9\u4e2dMIR\u8bf1\u5bfc\u5149\u8c31\u4f4d\u79fb\u7684\u573a\u4f9d\u8d56\u6027\u3002<\/p>\n \u56fe5. MIR\u9a71\u52a8\u95ea\u70c1\u63a7\u5236\u6a21\u578b\u7684\u4eff\u771f\u548c\u793a\u4f8b<\/p>\n a\u573a\u9a71\u52a8\u91cf\u5b50\u96a7\u7a7f\u7684\u539f\u7406\u56fe\u63cf\u8ff0\u3002<\/p>\n b\u91cf\u5b50\u96a7\u7a7f\u6a21\u62df\u4e86\u573a\u4f9d\u8d56\u4e8eMIR\u8bf1\u5bfc\u7684PL\u589e\u5f3a\u3002<\/p>\n c\u5bf9\u4e8e8\u548c10 ML\u91cf\u5b50\u70b9\uff0c\u5e73\u8861\u95ea\u70c1\u6001\u6765\u6e90\u4e8e\u91cf\u5b50\u4ea7\u7387\u4f4e\u7684Trion\u53d1\u5c04\u3002<\/p>\n d\u572814\u4e2aML\u91cf\u5b50\u70b9\u4e2d\uff0c\u7535\u5b50\u53ef\u4ee5\u53ef\u9006\u5730\u88ab\u4fd8\u83b7\u5230\u9677\u9631\u6001\uff0c\u8868\u793a\u4e3aRT\uff0c\u968f\u540e\u70ed\u8fd4\u56de\u91cd\u7ec4\u4e2d\u5fc3\u5e76\u8f90\u5c04\u91cd\u7ec4\u3002<\/p>\n \u5c0f\u7ed3\uff1a<\/b><\/strong><\/p>\n \u8d85\u5febMIR\u7535\u573a\u8109\u51b2\u5728\u95ea\u70c1OFF\u72b6\u6001\u4e0b\u53ef\u4ee5\u6709\u6548\u53bb\u9664\u5bfc\u81f4\u6c1a\u79bb\u5b50\u4ecb\u5bfc\u7684\u4fc4\u6b47\u590d\u5408\u7684\u591a\u4f59\u7535\u8377\uff0c\u4ece\u800c\u6291\u5236PL\u95ea\u70c1\uff0c\u5373\u4f7f\u5728\u975e\u5e38\u9ad8\u7684\u6fc0\u53d1\u901a\u91cf\u4e0b\u4e5f\u80fd\u5b9e\u73b0\u5f88\u9ad8\u7684\u91cf\u5b50\u4ea7\u7387\u3002\u6fc0\u53d1\u6ce2\u957f\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u6269\u5c55\u5230\u5176\u4ed6\u5149\u8c31\u8303\u56f4\uff0c\u7531\u4e8e\u573a\u9a71\u52a8\u79bb\u57df\u673a\u5236\u7684\u666e\u904d\u6027\uff0c\u5f00\u8f9f\u4e86\u5728\u4f53\u5185\u751f\u7269\u8ddf\u8e2a\u5e94\u7528\u7684\u53ef\u80fd\u6027\uff0c\u56e0\u4e3a\u4eba\u4eec\u53ef\u4ee5\u9009\u62e9\u4e00\u4e2a\u6ce2\u957f\u4e0e\u6700\u5c0f\u7684\u73af\u5883\u5438\u6536\u3002\u5b9e\u9a8c\u7ed3\u679c\u4e5f\u5c06\u6fc0\u53d1\u8fc4\u4eca\u5c1a\u672a\u63a2\u7d22\u7684\u4e00\u7c7b\u5168\u5149\u95ea\u70c1\u63a7\u5236\u5b9e\u9a8c\uff0c\u8be5\u5b9e\u9a8c\u4f7f\u7528\u7684\u662f\u8d85\u8d8a\u91cf\u5b50\u70b9\u7684\u5355\u4e2a\u53d1\u5c04\u5668\u7684\u79bb\u8c10\u632f\u573a\u6fc0\u52b1\uff0c\u5305\u62ecdiamond\u4e2d\u7684\u6c2e\/\u7845\u7a7a\u4f4d\u8272\u5fc3\u548c\u4e8c\u7ef4\u8fc7\u6e21\u91d1\u5c5e\u4e8c\u5364\u65cf\u5316\u5408\u7269\u4e2d\u7684\u7f3a\u9677\u3002\u5728\u91cf\u5b50\u8ba1\u7b97\u548c\u91cf\u5b50\u5bc6\u7801\u5b66\u5e94\u7528\u4e2d\uff0c\u5b9e\u73b0\u65e0\u591a\u4f59\u7535\u8377\u7684\u5355\u91cf\u5b50\u53d1\u5c04\u5668\u7684\u6f5c\u529b\u662f\u5de8\u5927\u7684\u3002<\/p>\n<\/p>\n
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