{"id":136813,"date":"2018-05-02T14:00:55","date_gmt":"2018-05-02T06:00:55","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=136813"},"modified":"2018-04-29T19:26:57","modified_gmt":"2018-04-29T11:26:57","slug":"%e7%9a%87%e5%ae%b6%e5%a2%a8%e5%b0%94%e6%9c%ac%e7%90%86%e5%b7%a5%e5%a4%a7%e5%ad%a6%e6%88%90%e5%9d%87%e9%a6%86%e5%a4%a7%e5%ad%a6nat-commun-%ef%bc%9a%e7%ba%b3%e7%b1%b3%e7%89%87%e8%8c%83%e5%be%b7","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=136813","title":{"rendered":"\u7687\u5bb6\u58a8\u5c14\u672c\u7406\u5de5\u5927\u5b66&\u6210\u5747\u9986\u5927\u5b66Nat. Commun. \uff1a\u7eb3\u7c73\u7247\u8303\u5fb7\u534e\u78c1\u6027\u6750\u6599Fe3GeTe2\u7684\u786c\u78c1\u6027\u80fd"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u81ea\u4ece\u673a\u68b0\u5265\u79bb\u6cd5\u6210\u529f\u5206\u79bb\u5355\u5c42\u77f3\u58a8\u70ef\u5f00\u59cb\uff0c\u4e8c\u7ef4\uff082D\uff09\u8303\u5fb7\u534e\uff08vdW\uff09\u6750\u6599\u53d7\u5230\u4e86\u5b66\u672f\u754c\u76f8\u5f53\u7684\u5173\u6ce8\u3002\u8fd9\u4e9b\u6750\u6599\u63ed\u793a\u4e86\u65b0\u9896\u7684\u5149\u5b66\u548c\u7535\u5b50\u5b66\u7279\u6027\u3002\u8fd9\u4e9b\u6750\u6599\u5806\u53e0\u7684\u5f02\u8d28\u7ed3\u6784\u542b\u6709\u66f4\u591a\u6709\u8da3\u7684\u7279\u6027\u3002\u5728\u8fc7\u53bb\u7684\u51e0\u5e74\u4e2d\uff0c\u62c9\u66fc\u5149\u8c31\u548c\u7535\u5b50\u4f20\u8f93\u6d4b\u91cf\u5df2\u7ecf\u5728vdW\u78c1\u4f53\u4e0a\u8fdb\u884c\u3002\u6700\u8fd1\uff0c\u7814\u7a76\u4eba\u5458\u5728\u4e24\u79cd\u7edd\u7f18vdW\u78c1\u6027\u6750\u6599Cr2<\/sub>Ge2<\/sub>Te6<\/sub>\u548cCrI3<\/sub>\u4ee5\u53ca\u57fa\u4e8evdW\u94c1\u78c1\u5f02\u8d28\u7ed3\u6784\u7684\u65b0\u578b\u5668\u4ef6\u4e2d\u6210\u529f\u53d1\u73b0\u4e86\u4e8c\u7ef4\u94c1\u78c1\u6027\u3002\u8fd9\u9879\u53d1\u73b0\u6709\u52a9\u4e8e\u8bbe\u8ba1\u548c\u5236\u9020\u8bb8\u591a\u57fa\u4e8evdW\u78c1\u4f53\u7684\u5668\u4ef6\u3002\u4f8b\u5982\uff0c\u5c06vdW\u94c1\u78c1\u91d1\u5c5e\u6750\u6599\u4e0e\u5177\u6709\u5f3a\u81ea\u65cb-\u8f68\u9053\u76f8\u4e92\u4f5c\u7528\u7684vdW\u91d1\u5c5e\u5806\u53e0\uff0c\u53ef\u4ee5\u7528\u4e8e\u8bbe\u8ba1\u5236\u9020\u81ea\u65cb-\u8f68\u9053\u626d\u77e9\u5668\u4ef6\u3002\u7136\u800c\uff0c\u4e3a\u4e86\u5f00\u53d1\u94c1\u78c1vdW\u6750\u6599\u4f5c\u4e3a\u57fa\u4e8evdW\u5f02\u8d28\u7ed3\u6784\u7684\u81ea\u65cb\u7535\u5b50\u5b66\u7684\u57fa\u7840\u6750\u6599\uff0c\u5177\u6709\u786c\u78c1\u76f8\u548c\u9ad8\u5269\u78c1\u4e0e\u9971\u548c\u78c1\u5316\uff08MR<\/sub>\/MS<\/sub>\uff09\u6bd4\u7684\u94c1\u78c1vdW\u91d1\u5c5e\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n

\u672c\u6587\u7814\u7a76\u4e86\u5355\u6676FGT\u7eb3\u7c73\u8584\u7247\u7684\u5f02\u5e38\u970d\u5c14\u6548\u5e94\uff0c\u53d1\u73b0\u5b83\u4eec\u7684\u78c1\u6027\u9ad8\u5ea6\u4f9d\u8d56\u4e8e\u539a\u5ea6\u3002\u5f53\u539a\u5ea6\u51cf\u5c0f\u5230\u5c0f\u4e8e200nm\uff0c\u5f62\u6210\u786c\u78c1\u76f8\u5177\u6709\u5927\u7684\u77eb\u987d\u529b\u548c\u63a5\u8fd1\u65b9\u5f62\u7684\u6ede\u540e\u56de\u7ebf\u3002\u672c\u6587\u63d0\u51fa\u4e86\u4e00\u4e2a\u6a21\u578b\u6765\u63cf\u8ff0FGT\u8584\u7247\u7684\u786c\u78c1\u884c\u4e3a\u3002\u8fd9\u4e2a\u6a21\u578b\u9002\u7528\u4e8e\u5177\u6709\u5f3a\u5782\u76f4\u5404\u5411\u5f02\u6027\u548c\u65b9\u5f62\u78c1\u73af\u7684\u5176\u4ed6vdW\u94c1\u78c1\u8584\u819c\u6216\u7eb3\u7c73\u8584\u7247\u3002<\/p>\n

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

\u4e8c\u7ef4vdW\u6750\u6599\u662f\u76ee\u524d\u6bd4\u8f83\u70ed\u95e8\u7684\u7814\u7a76\u9886\u57df\uff0c\u591a\u9879\u76f8\u5173\u7814\u7a76\u8868\u660e\u5176\u5177\u6709\u51fa\u8272\u7684\u5149\u5b66\u548c\u7535\u5b66\u7279\u6027\u3002\u7136\u800c\uff0c\u76ee\u524d\u6709\u5173vdW\u6750\u6599\u7684\u78c1\u6027\u548c\u5176\u5728\u81ea\u65cb\u7535\u5b50\u5b66\u5e94\u7528\u7684\u79d1\u7814\u6210\u679c\u4ecd\u6bd4\u8f83\u532e\u4e4f\u3002\u8fd1\u65e5\uff0c\u6fb3\u5927\u5229\u4e9a\u7687\u5bb6\u58a8\u5c14\u672c\u7406\u5de5\u5927\u5b66<\/strong>\u7684Wang Lan<\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u548c\u97e9\u56fd\u6210\u5747\u9986\u5927\u5b66<\/strong>\u7684Changgu Lee<\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u4eba\u7814\u7a76\u4e86\u4e0d\u540c\u539a\u5ea6\u7684\u5355\u6676\u91d1\u5c5eFe3<\/sub>GeTe2<\/sub>\u7eb3\u7c73\u7247\u7684\u53cd\u5e38\u970d\u5c14\u6548\u5e94\u6d4b\u91cf\u3002\u8fd9\u4e9b\u7eb3\u7c73\u8584\u7247\u5177\u6709\u63a5\u8fd1\u65b9\u5f62\u78c1\u73af\u7684\u5355\u4e00\u786c\u78c1\u76f8\uff0c\u8f83\u5927\u7684\u77eb\u987d\u529b\uff08\u57282K\u65f6\uff0c\u9ad8\u8fbe550mT\uff09\uff0c\u63a5\u8fd1200K\u7684\u5c45\u91cc\u6e29\u5ea6\u548c\u6781\u5f3a\u7684\u5782\u76f4\u78c1\u5404\u5411\u5f02\u6027\u3002\u901a\u8fc7\u4e34\u754c\u6027\u5206\u6790\uff0cFe3<\/sub>GeTe2<\/sub>\u4e2dvdW\u539f\u5b50\u5c42\u4e4b\u95f4\u7684\u8026\u5408\u8303\u56f4\u7ea6\u4e3a5\u4e2avdW\u539f\u5b50\u5c42\u3002Fe3<\/sub>GeTe2<\/sub>\u7684\u78c1\u6027\u80fd\u7a81\u51fa\u4e86\u5176\u6574\u5408\u5230vdW\u78c1\u5f02\u8d28\u7ed3\u6784\u5668\u4ef6\u4e2d\u7684\u6f5c\u529b\uff0c\u4e3a\u57fa\u4e8e\u8fd9\u4e9b\u5668\u4ef6\u7684\u81ea\u65cb\u7535\u5b50\u5b66\u7814\u7a76\u548c\u5e94\u7528\u94fa\u5e73\u4e86\u9053\u8def\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201c<\/strong>Hard magnetic properties in nanoflake van der Waals Fe3<\/sub>GeTe2<\/sub><\/strong>\u201d\u4e3a\u9898\u53d1\u8868\u5728Nature Communications<\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe<\/strong>1<\/strong>\u5728<\/strong>2K<\/strong>\u6e29\u5ea6\uff0c\u4e0d\u540c\u539a\u5ea6\u7684<\/strong>FGT<\/strong>\u7eb3\u7c73\u7247\u7684<\/strong>Rxy<\/sub><\/strong>\uff08<\/strong>B<\/strong>\uff09\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09FGT\u5355\u6676\u5757\u4f53\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=1.8 mm\u00d70.8 mm\u00d70.3 mm\uff0cMR<\/sub>\/MS<\/sub>=0.0715\uff1b<\/p>\n

\uff08b\uff09329 nm\u7684FGT\u5668\u4ef6\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=44.4 \u03bcm\u00d749.4 \u03bcm\u00d7329 nm\uff0cMR<\/sub>\/MS<\/sub>=0.0807\uff1b<\/p>\n

\uff08c\uff09191 nm\u7684FGT\u5668\u4ef6\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=14.7 \u03bcm\u00d79.25 \u03bcm\u00d7191 nm\uff0cMR<\/sub>\/MS <\/sub>=0.9757\uff1b<\/p>\n

\uff08d\uff0982 nm\u7684FGT\u5668\u4ef6\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=10.3 \u03bcm\u00d719.5 \u03bcm\u00d782 nm\uff0cMR<\/sub>\/MS<\/sub> =0.9839\uff1b<\/p>\n

\uff08e\uff0949 nm\u7684FGT\u5668\u4ef6\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=12.6 \u03bcm\u00d713.1 \u03bcm\u00d749 nm\uff0cMR<\/sub>\/MS<\/sub> =0.9980\uff1b<\/p>\n

\uff08f\uff0910.4nm\u7684FGT\u5668\u4ef6\uff0c\u5c3a\u5bf8L\u00d7W\u00d7T=12.7 \u03bcm\u00d78.79 \u03bcm\u00d710.4 nm\uff0cMR<\/sub>\/MS<\/sub> =0.9973\u3002<\/p>\n

\u56fe<\/strong>2 <\/strong>\u5c45\u91cc\u6e29\u5ea6\uff08<\/strong>TC<\/sub><\/strong>\uff09\u7684\u539a\u5ea6\u4f9d\u8d56\u6027\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\u5c45\u91cc\u6e29\u5ea6\uff08TC<\/sub>\uff09\u7684\u539a\u5ea6\u4f9d\u8d56\u6027\u56fe\u3002<\/p>\n

\u00a0<\/strong>\u56fe<\/strong>3 10.4 nm<\/strong>\u539a\u5ea6<\/strong>FGT<\/strong>\u5668\u4ef6\u7684\u53cd\u5e38\u970d\u5c14\u6548\u5e94\u6d4b\u91cf<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u57282-140K\u7684\u6e29\u5ea6\u8303\u56f4FGT\u7eb3\u7c73\u7247\u7684\u53cd\u5e38\u970d\u5c14\u6548\u5e94Rxy<\/sub>\uff08B\uff09\u66f2\u7ebf\uff0c\u663e\u793a\u51fa\u786c\u94c1\u78c1\u6027\u8d28\uff1b<\/p>\n

\uff08b\uff09\u5728150\u5230185K\u6e29\u5ea6\u8303\u56f4\u7684Rxy<\/sub>\uff08B\uff09\u66f2\u7ebf\uff1b<\/p>\n

\uff08c\uff09\u5f52\u4e00\u5316Rxy<\/sub>\uff08T\uff09\u66f2\u7ebf\u548c\u57fa\u4e8e\u5e73\u5747\u573a\u7406\u8bbaJ=1\uff0cJ=\u221e\u548c\u81ea\u65cb\u6ce2\u7406\u8bba\u7684\u4e09\u6761\u62df\u5408\u66f2\u7ebf\uff1b<\/p>\n

\uff08d\uff09\u57282-150K\u5185\uff0c\u77eb\u987d\u529b\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u5173\u7cfb\u56fe\u3002<\/p>\n

\u56fe<\/strong>4 <\/strong>\u89d2\u4f9d\u8d56\u970d\u5c14\u6548\u5e94\u6d4b\u91cf\u548c\u6539\u8fdb\u7684<\/strong>Stoner-Wohlfarth<\/strong>\u6a21\u578b\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff0cb\uff09Rxy<\/sub>\uff08B\uff09\u5728\u5916\u52a0\u78c1\u573a\u4e0e\u5782\u76f4\u4e8e\u539a\u5ea6\u4e3a10.4nm\u7684\u7eb3\u7c73\u7247\u8868\u9762\u7684\u65b9\u5411\u4e4b\u95f4\u4ee5\u4e0d\u540c\u89d2\u5ea6\u66f2\u7ebf\u56fe\uff1b<\/p>\n

\uff08c\uff09\u572885\u2103\uff0c\u4ece-6\u52306T\u7684\u8303\u56f4\u5185\u7684\u6807\u51c6\u5316\u7684Rxy<\/sub>\uff08B\uff09\u66f2\u7ebf\uff1b<\/p>\n

\uff08d\uff09\u4e0d\u540c\u6e29\u5ea6\u4e0b\uff0c\u6709\u6548\u77eb\u987d\u529b\u7684\u6709\u6548\u89d2\u5ea6\u4f9d\u8d56\u6027\u56fe\uff1b<\/p>\n

\uff08e\uff09KA<\/sub>\uff08\u5355\u4f4d\u78c1\u7b79\u7684\u78c1\u5404\u5411\u5f02\u6027\u80fd\uff09\u548cV\uff08\u5916\u78c1\u573a\u4f5c\u7528\u4e0b\u9996\u5148\u7ffb\u8f6c\u7684\u78c1\u7b79\u4f53\u79ef\uff09\u7684\u6e29\u5ea6\u4f9d\u8d56\u6027\u56fe\uff1b<\/p>\n

\uff08f\uff09Stoner-Wohlfarth\u6a21\u578b\u4e2d\u4f7f\u7528\u7684\u53d8\u91cf\u7684\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08g\uff09\u78c1\u7cfb\u7edf\u7531\u4e9a\u7a33\u6001\u8f6c\u53d8\u4e3a\u975e\u7a33\u5b9a\u6001\u7684\u793a\u610f\u56fe\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u672c\u6587\u7814\u7a76\u53d1\u73b0FGT\u7eb3\u7c73\u8584\u7247\u662fvdW\u4e8c\u7ef4\u91d1\u5c5e\u94c1\u78c1\u4f53\uff0c\u5176\u77eb\u987d\u529b\u8f83\u5927\uff0cMR<\/sub>\/MS<\/sub>\u6bd4\u503c\u4e3a1\uff0c\u542b\u6709\u76f8\u5bf9\u8f83\u9ad8\u7684TC<\/sub>\u548c\u5f3a\u7684\u5782\u76f4\u5404\u5411\u5f02\u6027\u3002\u5728\u57fa\u4e8evdW\u6750\u6599\u7684\u5de8\u78c1\u7535\u963b\u3001\u96a7\u7a7f\u78c1\u963b\u548c\u81ea\u65cb\u8f68\u9053\u626d\u77e9\u5f02\u8d28\u7ed3\u6784\u7684\u5404\u79cdvdW\u78c1\u5f02\u8d28\u7ed3\u6784\u4e2d\uff0c\u8fd9\u79cd\u6750\u6599\u5177\u6709\u5f88\u597d\u7684\u7814\u7a76\u4ef7\u503c\u3002\u8fd9\u4e00\u53d1\u73b0\u4e3a\u672a\u6765\u57fa\u4e8e\u8303\u5fb7\u534e\u6750\u6599\u7684\u5f02\u8d28\u7ed3\u6784\u7684\u81ea\u65cb\u7535\u5b50\u5b66\u7684\u7814\u7a76\u94fa\u5e73\u4e86\u9053\u8def\u3002<\/p>\n

\u3010\u56e2\u961f\u4ecb\u7ecd<\/strong>\u3011<\/p>\n

\u7687\u5bb6\u58a8\u5c14\u672c\u7406\u5de5\u5927\u5b66\u738b\u6f9c\u6559\u6388\u7684\u56e2\u961f\u4e8e2015\u5e74\u672b\u5728\u6fb3\u5927\u5229\u4e9a\u58a8\u5c14\u672c\u6210\u7acb\uff0c\u56e2\u961f\u73b0\u6709\u526f\u6559\u63881\u4eba\uff0c\u535a\u58eb\u540e2\u4eba\uff0c\u535a\u58eb\u751f4\u4eba\u3002\u56e2\u961f\u9886\u5bfc\u738b\u6f9c\u6559\u6388\u62e5\u6709\u65b0\u52a0\u5761\u56fd\u7acb\u5927\u5b66\u548c\u7f8e\u56fd\u660e\u5c3c\u82cf\u8fbe\u5927\u5b66\u53cc\u535a\u58eb\u5b66\u4f4d\uff0c\u73b0\u4efb\u7687\u5bb6\u58a8\u5c14\u672c\u7406\u5de5\u5927\u5b66\u7269\u7406\u7cfb\u526f\u6559\u6388\uff0c\u6fb3\u5927\u5229\u4e9a\u7814\u7a76\u59d4\u5458\u4f1a\u672a\u6765\u4f4e\u80fd\u7535\u5b50\u6280\u672f\u5353\u8d8a\u4e2d\u5fc3\uff08FLEET\uff1aARC Centre of Excellence in Future\u00a0Low-Energy Electronics Technologies\uff09\u7eb3\u7c73\u5668\u4ef6\u5236\u9020\u5904\u4e3b\u4efb\u3002<\/p>\n

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\u56e2\u961f\u73b0\u67091\u53f0\u7269\u6027\u6d4b\u91cf\u7cfb\u7edf\uff08PPMS,Quantum Design, Evercool,\u78c1\u573a\u00b19T\uff0c\u6e29\u5ea61.8K\uff0c\u914d\u81ea\u642d\u7684\u6d4b\u91cf\u7cfb\u7edf\u8fdb\u884c\u5404\u79cd\u7535\u8f93\u8fd0\u6d4b\u91cf\uff09\uff0c\u57fa\u4e8e\u624b\u5957\u7bb1\uff08\u6c34\uff0c\u6c27<0.1 ppm\uff09\u548c\u5149\u5b66\u663e\u5fae\u955c\u7684\u8d85\u51c0\u4e8c\u7ef4\u6750\u6599\u5f02\u8d28\u7ed3\u5806\u53e0\u7cfb\u7edf,\u65cb\u6d82\u4eea\uff0c1\u5957CVD\u6750\u6599\u751f\u957f\u7cfb\u7edf\u548c1\u53f0\u5355\u6676\u751f\u957f\u7ba1\u5f0f\u7089\u7b49\u3002\u5b66\u6821\u516c\u5171\u5b9e\u9a8c\u5ba4\u62e5\u6709\u5149\u523b\u673a\uff0c\u7535\u5b50\u523b\u7cfb\u7edf\uff0c\u7b49\u79bb\u5b50\u523b\u8680\u7cfb\u7edf\uff0c\u7535\u5b50\u675f\u84b8\u53d1\u9540\u819c\u7cfb\u7edf\uff0c\u626b\u63cf\u7535\u5b50\u663e\u5fae\u955c\uff0c\u900f\u5c04\u7535\u5b50\u663e\u5fae\u955c\uff0c\u539f\u5b50\u529b\u663e\u5fae\u955c\u7b49\uff0c\u53ef\u4ee5\u4fbf\u6377\u5730\u8fdb\u884c\u5404\u79cd\u6750\u6599\u8868\u5f81\u6d4b\u8bd5\u548c\u7eb3\u7c73\u7535\u5b50\u5668\u4ef6\u5236\u9020\u30022018\u5e74\u5e74\u5e95\u524d\u8be5\u5b9e\u9a8c\u5ba4\u8fd8\u4f1a\u5b8c\u6210\u642d\u5efa1\u53f0\u78c1\u6027\u6d4b\u91cf\u7cfb\u7edf\uff08MPMS\uff0cQuantum Design\u78c1\u573a\u00b17T\uff0c\u6e29\u5ea61.8K\uff0c\u4e5f\u53ef\u8fdb\u884c\u7535\u5b50\u8f93\u8fd0\u6d4b\u91cf\uff09\uff0c1\u53f0\u8d85\u51c0\u4e8c\u7ef4\u6750\u6599\u5f02\u8d28\u7ed3\u5806\u53e0\u7cfb\u7edf\u548c2\u53f0\u78c1\u63a7\u6e85\u5c04\u7cfb\u7edf\u3002\u672a\u6765\u5b9e\u9a8c\u5ba4\u8fd8\u5c06\u642d\u5efa\u5149\u7535\u5b50\u80fd\u8c31\u5e73\u53f0\uff08\u8d44\u91d1\u5df2\u4e0b\u8fbe\uff09\uff0c\u78c1\u5149\u514b\u5c14\u6548\u5e94\u5149\u8c31\u6d4b\u91cf\u5e73\u53f0(MOKE)\u548c\u5149\u7535\u6d41\u6d4b\u91cf\u5e73\u53f0\uff08\u5149\u5b66\u5e73\u53f0\u5df2\u51c6\u5907\uff09\u3002<\/p>\n

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\u76f8\u5173\u7f51\u7ad9\u94fe\u63a5\uff1ahttps:\/\/www.fleet.org.au\/blog\/custom-nanoscale-structures-on-demand-rmit\/<\/a><\/p>\n

https:\/\/www.rmit.edu.au\/contact\/staff-contacts\/academic-staff\/w\/wang-associate-professor-lan#collapseOne<\/a><\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Hard magnetic properties in nanoflake van der Waals Fe3<\/sub>GeTe2<\/sub><\/a>\uff08Nature Communications, 2018, DOI: 10.1038\/s41467-018- 04018-w\uff09\u3002<\/p>\n

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