{"id":231986,"date":"2022-01-16T06:35:39","date_gmt":"2022-01-15T22:35:39","guid":{"rendered":"\/\/m.iemloyee.com\/?p=231986"},"modified":"2022-01-15T15:36:37","modified_gmt":"2022-01-15T07:36:37","slug":"nano-letters-%e7%ba%b3%e7%b1%b3%e9%a2%97%e7%b2%92%e7%bb%84%e8%a3%85%e7%9a%84%e8%b6%85%e5%bc%ba%e9%9f%a7%e8%87%aa%e7%ab%8b%e9%87%91%e7%ba%b3%e7%b1%b3%e7%89%87","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=231986","title":{"rendered":"Nano Letters: \u7eb3\u7c73\u9897\u7c92\u7ec4\u88c5\u7684\u8d85\u5f3a\u97e7\u81ea\u7acb\u91d1\u7eb3\u7c73\u7247"},"content":{"rendered":"

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

\u968f\u7740\u7eb3\u7c73\u7535\u5b50\u5668\u4ef6\u548c\u7eb3\u7c73\u673a\u7535\u7cfb\u7edf\u7684\u4e0d\u65ad\u5c0f\u578b\u5316\uff0c\u975e\u5e38\u9700\u8981\u5177\u6709\u6570\u5341\u7eb3\u7c73\u7279\u5f81\u5c3a\u5bf8\u7684\u9ad8\u5f3a\u5ea6\u548c\u5ef6\u5c55\u6027\u7684\u4f4e\u7ef4\u91d1\u5c5e\uff0c\u5982\u7eb3\u7c73\u7ebf\u548c\u7eb3\u7c73\u819c\uff0c\u4f5c\u4e3a\u5fc5\u8981\u7684\u8fde\u63a5\u7ebf\u548c\u7535\u6781\u6750\u6599\uff0c\u627f\u53d7\u53ef\u7a7f\u6234\u3001\u67d4\u6027\u7535\u5b50\u8bbe\u5907\u4e2d\u7684\u590d\u6742\u5e94\u529b\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u7684\u5757\u72b6\u91d1\u5c5e\uff0c\u4f17\u6240\u5468\u77e5\uff0c\u5b83\u4eec\u7684\u5f3a\u5ea6\u548c\u5ef6\u5c55\u6027\u662f\u4e24\u4e2a\u76f8\u4e92\u77db\u76fe\u7684\u53c2\u91cf\u3002\u5f53\u4eba\u4eec\u8bd5\u56fe\u901a\u8fc7\u6676\u7c92\u7ec6\u5316\u6216\u901a\u8fc7\u56fa\u6eb6\u786c\u5316\u6765\u63d0\u9ad8\u91d1\u5c5e\u7684\u5f3a\u5ea6\u65f6\uff0c\u4e0d\u5f97\u4e0d\u727a\u7272\u91d1\u5c5e\u7684\u5ef6\u5c55\u6027\u3002\u4f8b\u5982\uff0c\u5927\u591a\u6570\u5757\u72b6\u7eb3\u7c73\u6676\u91d1\u5c5e\u975e\u5e38\u575a\u56fa\uff0c\u5c48\u670d\u5f3a\u5ea6\u8d85\u8fc7 0.4 GPa\uff1b\u7136\u800c\uff0c\u5b83\u4eec\u901a\u5e38\u8868\u73b0\u51fa\u76f8\u5f53\u4f4e\u7684\u62c9\u4f38\u5ef6\u5c55\u6027\uff08\u5c0f\u4e8e\u51e0\u4e2a\u767e\u5206\u70b9\uff09\u3002\u6700\u8fd1\uff0c\u4eba\u4eec\u63d0\u51fa\u4e86\u8bb8\u591a\u7b56\u7565\u6765\u514b\u670d\u7eb3\u7c73\u6676\u91d1\u5c5e\u5f3a\u5ea6\u548c\u5ef6\u5c55\u6027\u4e0d\u80fd\u5171\u5b58\u7684\u95ee\u9898\uff0c\u4f8b\u5982\u5f62\u6210\u68af\u5ea6\u6216\u5f02\u8d28\u7eb3\u7c73\u7ed3\u6784\uff0c\u5bf9\u6676\u754c\u8fdb\u884c\u8c03\u63a7\u6216\u5f62\u6210\u7eb3\u7c73\u7ea7\u5b6a\u6676\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u7b56\u7565\u5e76\u4e0d\u9002\u5e94\u4e8e\u4f4e\u7ef4\u91d1\u5c5e\u3002\u968f\u7740\u91d1\u5c5e\u5c3a\u5bf8\u7684\u51cf\u5c0f\uff0c\u8868\u9762\u6548\u5e94\u5360\u4e3b\u5bfc\u5730\u4f4d\uff0c\u56e0\u6b64\u51fa\u73b0\u4e86\u91d1\u5c5e\u5f3a\u5ea6\u7684\u5c3a\u5bf8\u6548\u5e94-\u5373\u8d8a\u5c0f\u8d8a\u5f3a\u3002\u4ee5\u91d1\u4e3a\u4f8b\uff0c\u7eb3\u7c73\u6676\u91d1\u819c\u7684\u5c48\u670d\u5f3a\u5ea6\u53ef0.3~0.5GPa\uff0c\u7ea6\u4e3a\u7c97\u7c92\u91d1\uff08~0.2GPa\uff09\u76842-3\u500d\uff1b\u7136\u800c\uff0c\u7eb3\u7c73\u6676\u91d1\u819c\u7684\u5ef6\u5c55\u6027\u76f8\u6bd4\u5927\u5757\u91d1\u975e\u5e38\u6709\u9650\uff0c\u4e0d\u52304%\u3002\u968f\u7740\u91d1\u7684\u539a\u5ea6\u51cf\u5c11\u5230 100 nm \u4ee5\u4e0b\uff0c\u8fd9\u4e9b\u91d1\u7eb3\u7c73\u7247\u51e0\u4e4e\u5448\u73b0\u8106\u6027\u65ad\u88c2\uff0c\u5c3d\u7ba1\u5b83\u4eec\u7684\u5f3a\u5ea6\u76f8\u5bf9\u8f83\u9ad8\uff0c\u4f46\u4e0d\u518d\u9002\u5408\u5236\u9020\u53ef\u62c9\u4f38\u7535\u5b50\u5668\u4ef6\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u6768\u52c7\u6559\u6388\u3001\u4e0a\u6d77\u5927\u5b66\u738b\u5e86\u7814\u7a76\u5458\u3001\u5317\u4eac\u9ad8\u538b\u79d1\u5b66\u7814\u7a76\u4e2d\u5fc3\u66fe\u6865\u77f3\u7814\u7a76\u5458\uff08\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba\u5408\u4f5c\uff0c\u5229\u7528\u805a\u5408\u7269\u8868\u9762\u5c48\u66f2\u5265\u79bb\u6cd5\uff08PSBEE\uff09\u5236\u5907\u4e86\u5927\u5c3a\u5bf8\u768410-100 nm\u539a\u7684\u81ea\u7acb(freestanding)\u91d1\u7eb3\u7c73\u7247\u3002\u901a\u8fc7\u7403\u5dee\u7535\u955c\uff0c\u5149\u7535\u5b50\u80fd\u8c31\u4ee5\u53ca\u57fa\u4e8e\u539f\u5b50\u529b\u663e\u5fae\u955c\u7684\u7eb3\u7c73\u538b\u75d5\u6d4b\u91cf\uff0c\u4ed6\u4eec\u53d1\u73b0\u91d1\u7eb3\u7c73\u7247\u662f\u7531\u9ad8\u5ea6\u626d\u66f2\u7684\u91d1\u7eb3\u7c73\u9897\u7c92\u4e0e\u7eb3\u7c73\u5c3a\u5ea6\u7684\u975e\u6676\u78b3\u754c\u9762\u81ea\u7ec4\u88c5\u800c\u6210\uff0c\u663e\u793a\u51fa\u8d85\u9ad8\u7684\u5f3a\u5ea6\u3001\u4f18\u5f02\u7684\u5ef6\u5c55\u6027\u548c\u65ad\u88c2\u97e7\u6027\u3002\u800c\u4e14\u8fd8\u62e5\u6709\u51fa\u8272\u7684\u5bfc\u7535\u6027\u80fd\uff0c\u4f7f\u5176\u6210\u4e3a\u4e0b\u4e00\u4ee3\u67d4\u6027\u7535\u5b50\u4ea7\u54c1\u7684\u6700\u4f73\u5019\u9009\u6750\u6599\u3002\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u201cStrong, Ductile, and Tough Nanocrystal-Assembled Freestanding Gold Nanosheets\u201d\u53d1\u8868\u5728Nano letters\u4e0a\u3002<\/p>\n

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

\u56fe<\/strong>1 <\/strong>\u91d1\u7eb3\u7c73\u7247\u5f62\u8c8c\u548c\u7ed3\u6784\u8868\u5f81\u3002<\/strong><\/p>\n

\"\"<\/a><\/p>\n

(a)\u4ee5\u6c34\u51dd\u80f6\u4e3a\u6a21\u677f\u5f62\u6210\u91d1\u7eb3\u7c73\u7247\u7684\u6a21\u578b\u56fe\u3002<\/p>\n

(b)\u5178\u578b\u768418 nm\u539a\u7684\u91d1\u7eb3\u7c73\u7247\u7684TEM\u56fe\u3002\u63d2\u56fe\uff1a\u975e\u6676\uff08\u5de6\u4e0b\uff09\u548c\u6676\u4f53\uff08\u53f3\u4e0a\uff09\u533a\u57df\u7684FFT\u56fe\u3002<\/p>\n

(c-f) HAADF-STEM\u56fe\u50cf\u548c\u76f8\u5e94\u7684\u5143\u7d20\u5206\u5e03\u3002<\/p>\n

(g) 18 nm\u539a\u7684\u91d1\u7eb3\u7c73\u7247\u7684\u62c9\u66fc\u5149\u8c31\u3002<\/p>\n

(h-j) \u91d1\u7eb3\u7c73\u7247\u4e2d\u5178\u578b\u7684HCP\u3001\u5b6a\u6676\u548c\u5806\u579b\u5c42\u9519\u7ed3\u6784\u3002<\/p>\n

(k,l) \u91d1\u7eb3\u7c73\u7247\u4e2d\u5c3a\u5bf8\u5206\u522b\u4e3a~ 3nm \u548c ~12 nm \u7684\u5178\u578b\u91d1\u7eb3\u7c73\u9897\u7c92\u7684TEM\u56fe\u3002\u63d2\u56fe\uff1a\u5782\u76f4{111}\u6676\u9762\u4e0a\u7684\u7ebf\u5f3a\u5ea6\u5206\u5e03\u56fe\u3002<\/p>\n

(m) \u6676\u683c\u5e38\u6570\u968f\u91d1\u7eb3\u7c73\u9897\u7c92\u7684\u53d8\u5316\u3002<\/p>\n

(n-s) ~12 nm\u548c~5 nm\u7684\u91d1\u7eb3\u7c73\u9897\u7c92\u7684 (n, q) STEM-ABF, (o, r) STEM-HAADF\u56fe\uff1b\u4ee5\u53ca\u56fe(d, e, g, h)\u7684\u9752\u8272\u77e9\u5f62\u6846\u5bf9\u5e94\u7684(f, i)\u7ebf\u5f3a\u5ea6\u5206\u5e03\u56fe\u3002<\/p>\n

\u56fe<\/strong>2 26 nm<\/strong>\u539a\u91d1\u7eb3\u7c73\u7247\u7684<\/strong>X<\/strong>\u5c04\u7ebf\u5149\u7535\u5b50\u80fd\u8c31\u6df1\u5ea6\u5256\u6790<\/strong><\/p>\n

\"\"<\/a><\/p>\n

(a-c) \u91d1\u7eb3\u7c73\u7247\u4e2dAu 4f\u3001C 1s\u548c O1s\u7684\u7a84\u626bXPS\u5149\u8c31\u968f\u523b\u8680\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/p>\n

(d,e ) Au 4f \u548c C 1s \u5206\u522b\u5728100 s\u548c1000 s\u6e85\u5c04\u65f6\u95f4\u4e0b\u7684XPS\u8c31\u56fe\u5206\u6790\u3002<\/p>\n

(f) C\u3001O \u548c Au \u7684\u76f8\u5bf9\u539f\u5b50\u6d53\u5ea6\u968f\u523b\u8680\u6df1\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n

\u56fe<\/strong>3 <\/strong>\u81ea\u7acb\u91d1\u7eb3\u7c73\u7247\u7684\u7535\u5b66\u548c\u529b\u5b66\u6027\u80fd\u3002<\/strong><\/p>\n

\"\"<\/a><\/p>\n

(a) \u91d1\u7eb3\u7c73\u7247\u548c\u6587\u732e\u62a5\u9053\u7684\u7eaf\u91d1\u819c\u7684\u65b9\u963b\u6bd4\u8f83\u3002<\/p>\n

(b) 26 nm\u539a\u7684\u91d1\u7eb3\u7c73\u7247\u7684\u5178\u578b\u529b-\u4f4d\u79fb\u66f2\u7ebf\u3002<\/p>\n

(c,d) \u901a\u8fc7FE\u6a21\u62df\u63d0\u53d6\u7684\u4e0d\u540c\u539a\u5ea6\u7684\u91d1\u7eb3\u7c73\u7247\u7684\u5f39\u6027\u6a21\u91cf\uff0c\u5c48\u670d\u5f3a\u5ea6\u4ee5\u53ca\u5ef6\u5c55\u6027\u3002<\/p>\n

(e) \u91d1\u7eb3\u7c73\u7247\u548c\u6587\u732e\u62a5\u9053\u7684\u7eb3\u7c73\u6676\u3001\u591a\u6676\u91d1\u819c\uff0c\u5355\u6676\u548c\u7eb3\u7c73\u6676\u91d1\u7eb3\u7c73\u7ebf\u4ee5\u53ca\u78b3\u7eb3\u7c73\u7ba1\u589e\u5f3a\u7684PVA\u590d\u5408\u6750\u6599\u5728\u62c9\u4f38\uff0c\u5f2f\u66f2\u5b9e\u9a8c\u4ee5\u53ca\u7406\u8bba\u8ba1\u7b97\u4e0b\u7684\u5c48\u670d\u5f3a\u5ea6\u548c\u5ef6\u5c55\u6027\u7684\u6bd4\u8f83\u56fe\u3002<\/p>\n

(f) \u7834\u88c2\u7684\u91d1\u7eb3\u7c73\u7247\u7684TEM\u56fe\u3002<\/p>\n

(g) \u88c2\u7eb9\u5c16\u7aef\u9ad8\u5ea6\u53d8\u5f62\u533a\u57df\u7684TEM \u653e\u5927\u56fe\u3002<\/p>\n

(h, i) \u53d8\u5f62\u533a\u57df\u91d1\u7eb3\u7c73\u9897\u7c92\u4e2d\u7684\u5806\u579b\u5c42\u9519\u548c\u5b6a\u6676\u3002<\/p>\n

(j, k) \u53d8\u5f62\u66f2\u7ebf\u5178\u578b\u91d1\u7eb3\u7c73\u9897\u7c92\u7684TEM \u56fe\u548c\u76f8\u5e94\u7684\u6ee4\u6ce2\u56fe\uff0c\u672a\u89c2\u5bdf\u5230\u660e\u663e\u7684\u4f4d\u9519\u6d3b\u52a8\u3002<\/p>\n

\u56fe<\/strong>4 <\/strong>\u91d1\u7eb3\u7c73\u7247\u7684\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u3002<\/strong><\/p>\n

\"\"<\/a><\/p>\n

(a-c) \u91d1\u7eb3\u7c73\u7247\u7684\u4e09\u79cd\u539f\u5b50\u6a21\u578b\u56fe\u3002\u5176\u4e2d\u6a21\u578bI\u662f\u7531\u7b49\u8f74\u91d1\u7eb3\u7c73\u9897\u7c92\u6784\u6210\uff1b \u6a21\u578bII\u662f\u7531\u7b49\u8f74\u91d1\u7eb3\u7c73\u9897\u7c92\u4e0e\u4e00\u5b9a\u542b\u91cf\u7684\u975e\u6676\u78b3\u6784\u6210\uff1b\u6a21\u578bIII\u662f\u6a21\u578bII\u548c\u5206\u6563\u5728\u975e\u6676\u78b3\u4e0a\u65b9\u7684\u805a\u4e59\u70ef(PE)\u5206\u5b50\u94fe\u7684\u6df7\u5408\u7269\u3002<\/p>\n

(d-f) \u6a21\u578b I\u3001\u6a21\u578b II \u548c \u6a21\u578b III \u4e2d\uff0c\u539f\u5b50\u5fae\u89c2\u7ed3\u6784\u968f\u91d1\u7eb3\u7c73\u9897\u7c92\u7684\u5c3a\u5bf8(d<\/em>)\u548c\u975e\u6676\u78b3\u542b\u91cf\u7684\u53d8\u5316\u3002<\/p>\n

(g) \u6a21\u578bI, II\u548cIII\u5728d<\/em> = 3 nm \u548c\u542b 15%\u975e\u6676\u78b3\u65f6\u7684\u5178\u578b\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\u3002<\/p>\n

(h)\u6a21\u578bI, II\u548cIII\u5728\u4e0d\u540c\u91d1\u7eb3\u7c73\u9897\u7c92\u5c3a\u5bf8\u548c\u975e\u6676\u78b3\u542b\u91cf\u4e0b\u7684\u8ba1\u7b97\u5c48\u670d\u5f3a\u5ea6\u3002<\/p>\n

(i,j) \u5728 10% \u5e94\u53d8\u4e0b\uff0c\u6a21\u578bI\u548c\u542b\u670915%\u975e\u6676\u78b3\u7684\u6a21\u578bII\u7684\u5c40\u57df\u7ed3\u6784\u548c\u4f4d\u9519\u5206\u6790\u3002<\/p>\n

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

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\u56fe\u6587\u94fe\u63a5\uff1ahttps:\/\/doi.org\/10.1021\/acs.nanolett.1c04553<\/a><\/p>\n

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