{"id":120030,"date":"2018-01-07T14:00:28","date_gmt":"2018-01-07T06:00:28","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=120030"},"modified":"2018-01-06T22:32:14","modified_gmt":"2018-01-06T14:32:14","slug":"j-am-ceram-soc-%ef%bc%9aho%e6%8e%ba%e6%9d%82k0-5na0-5nbo3%e5%8e%8b%e7%94%b5%e9%99%b6%e7%93%b7%e7%9a%84%e5%8f%af%e9%80%86%e5%8f%91%e5%85%89%e8%b0%83%e8%8a%82%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=120030","title":{"rendered":"J. Am. Ceram. Soc.\uff1aHo\u63ba\u6742K0.5Na0.5NbO3\u538b\u7535\u9676\u74f7\u7684\u53ef\u9006\u53d1\u5149\u8c03\u8282\u673a\u5236"},"content":{"rendered":"<p><strong>\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n<p>\u8fd1\u5e74\u6765\uff0c\u57fa\u4e8eK<sub>0.5<\/sub>Na<sub>0.5<\/sub>NbO<sub>3<\/sub>\uff08KNN\uff09\u7684\u538b\u7535\u4f53\u9010\u6e10\u88ab\u8ba4\u4e3a\u662f\u66ff\u4ee3\u4f20\u7edf\u7684Pb\uff08Zr\uff0cTi\uff09O<sub>3<\/sub>\u57fa\u6750\u6599\u7684\u6700\u6709\u5e0c\u671b\u7684\u5019\u9009\u6750\u6599\u4e4b\u4e00\u3002\u4e00\u76f4\u81f4\u529b\u4e8e\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u5176\u538b\u7535\u6027\u80fd\uff0c\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u79bb\u5b50\u63ba\u6742\uff08\u4f8b\u5982\u91d1\u5c5e\u79bb\u5b50\uff0c\u8fc7\u6e21\u91d1\u5c5e\u79bb\u5b50\u6216\u9567\u7cfb\u5143\u7d20\u79bb\u5b50\uff09\u88ab\u5e7f\u6cdb\u7528\u4e8e\u63d0\u9ad8\u5176\u538b\u7535\u6027\u80fd\u3002\u7279\u522b\u662f\u9567\u7cfb\u5143\u7d20\u79bb\u5b50\u63ba\u6742\u4e0d\u4ec5\u8d4b\u4e88KNN\u57fa\u6750\u6599\u4ee5\u8ff7\u4eba\u7684\u5149\u5b66\u6027\u80fd\uff0c\u800c\u4e14\u8fd8\u53ef\u4ee5\u6539\u5584\u5176\u672c\u5f81\u7684\u94c1\/\u538b\u7535\u6027\u8d28\u3002\u901a\u8fc7\u96c6\u6210\u53d1\u5149\u548c\u94c1\u7535\/\u538b\u7535\u7279\u6027\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u62d3\u5c55KNN\u6750\u6599\u4f5c\u4e3a\u4e00\u79cd\u591a\u529f\u80fd\u5668\u4ef6\u7684\u5e94\u7528\u9886\u57df\u3002<\/p>\n<p><strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n<p>\u8fd1\u65e5\uff0c\u6765\u81ea<strong>\u5185\u8499\u53e4\u79d1\u6280\u5927\u5b66\u7684\u7814\u7a76\u751f\u5f20\u7476\uff08\u7b2c\u4e00\u4f5c\u8005\uff09\uff0c\u5f20\u5947\u4f1f\u526f\u6559\u6388\uff08\u901a\u8baf\u4f5c\u8005\uff09, \u5b59\u6d77\u52e4\u8bb2\u5e08\uff08\u901a\u8baf\u4f5c\u8005\uff09, \u90dd\u559c\u7ea2\u6559\u6388<\/strong>\u7b49\u4eba\u7814\u7a76\u53d1\u73b0\uff0c\u57fa\u4e8e\u5149\u81f4\u53d8\u8272\u54cd\u5e94\u7684\u8367\u5149\u8c03\u5236\u884c\u4e3a\u5728Ho<sup>3+<\/sup>\u63ba\u6742\uff08Na<sub>0.52<\/sub>K<sub>0.48<\/sub>\uff09<sub>0.92<\/sub>Li<sub>0.08<\/sub>NbO<sub>3<\/sub>\u9676\u74f7\u4e2d\u89c2\u5bdf\u5230\uff0c\u4f20\u7edf\u7684\u56fa\u6001\u53cd\u5e94\u65b9\u6cd5\u5728\u53ef\u89c1\u5149\u7167\u5c04\uff08407nm\uff09\u4e0b20\u79d2\uff0c\u6837\u54c1\u7531\u521d\u59cb\u7684\u6de1\u7eff\u8272\u53d8\u6210\u6d45\u7070\u8272\uff0c\u5e76\u901a\u8fc7230\u2103\u7684\u70ed\u523a\u6fc010\u5206\u949f\u6062\u590d\u5230\u5176\u539f\u59cb\u989c\u8272\uff0c\u663e\u793a\u51fa\u5178\u578b\u7684\u5149\u81f4\u53d8\u8272\u73b0\u8c61\u3002\u5728453nm\u6fc0\u53d1\u4e0b\uff0c\u6837\u54c1\u5728551nm\u663e\u793a\u51fa\u5f3a\u7684\u7eff\u8272\u53d1\u5c04\u3002\u6709\u8da3\u7684\u662f\uff0c\u901a\u8fc7\u63a7\u5236\u5149\u81f4\u53d8\u8272\u53cd\u5e94\u8fc7\u7a0b\uff08\u7167\u5c04\u6ce2\u957f\u548c\u65f6\u95f4\uff09\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u5176\u53d1\u5149\u5f3a\u5ea6\uff0c\u53d1\u5149\u8c03\u5236\u6bd4\u8fbe\u523077\uff05\u3002\u901a\u8fc7\u4ea4\u66ff\u7684\u53ef\u89c1\u5149\u7167\u5c04\u548c\u70ed\u523a\u6fc0\uff0c\u572810\u4e2a\u5faa\u73af\u540e\u25b3Rt\u503c\u6ca1\u6709\u4efb\u4f55\u660e\u663e\u7684\u964d\u89e3\uff0c\u663e\u793a\u51fa\u4f18\u5f02\u7684\u53ef\u9006\u6027\u3002<\/p>\n<p><strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n<p><strong>\u56fe<\/strong><strong>1 <\/strong><strong>KNLN<\/strong><strong>\u7684<\/strong><strong>XRD<\/strong><strong>\u56fe<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120033\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe1.jpg\" alt=\"\" width=\"552\" height=\"542\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe1.jpg 552w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe1-300x295.jpg 300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/strong><\/p>\n<p>\u4e0d\u540cHo<sup>3+<\/sup>\u63ba\u6742\u6d53\u5ea6\u4e0bKNLN\u7684XRD\u56fe\uff0c\u5bf9\u4e8ex=0\u7684\uff08ABO\uff09\u548c\u6837\u54c1\uff0c\u89c2\u5bdf\u5230\u4e3b\u8981\u7684\u9499\u949b\u77ff\u76f8\u548c\u6b21\u8981\u7684\u7b2c\u4e8c\u76f8\uff0c\u968f\u7740Ho\u542b\u91cf\u7684\u589e\u52a0 \uff08x=0.02\uff09\u65f6\uff0c\u51fa\u73b0\u4e86\u4e00\u4e9b\u65b0\u7684\u9644\u52a0\u884d\u5c04\u5cf0\uff0c\u8fd9\u4e9b\u884d\u5c04\u5cf0\u53ef\u4ee5\u6307\u5411HoNbO<sub>4<\/sub>\u76f8\uff08JCPDS No.23-1104\uff09\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>2<\/strong><strong>\uff1a<\/strong><strong> KNLN<\/strong><strong>\u7684\u56db\u79cd\u5178\u578b\u7ec4\u6210\u7684<\/strong><strong>SEM<\/strong><strong>\u56fe<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120034\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe2.jpg\" alt=\"\" width=\"600\" height=\"422\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe2.jpg 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe2-300x211.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/strong><\/p>\n<p>\u56fe2\u6240\u6709\u6837\u54c1\u90fd\u663e\u793a\u51fa\u826f\u597d\u7684\u70e7\u7ed3\uff08\u6d45\u7eff\u8272\uff09\u548c\u81f4\u5bc6\u7684\u5fae\u89c2\u7ed3\u6784\uff08\u56fe2\u7684\u63d2\u56fe\uff09\u3002\u6240\u6709\u6837\u54c1\u6e05\u695a\u5730\u89c2\u5bdf\u5230\u5177\u6709\u6e05\u6670\u8fb9\u754c\u7684\u77e9\u5f62\u6676\u7c92\u3002\u968f\u7740Ho\u63ba\u6742\u91cf\u7684\u589e\u52a0\uff0c\u6676\u7c92\u5c3a\u5bf8\u9010\u6e10\u4ece6.33 \u03bcm\u4e0b\u964d\u52302.34 \u03bcm\u3002\u8fd9\u8868\u660eHo\u63ba\u6742\u5bf9\u6676\u7c92\u5c3a\u5bf8\u6709\u660e\u663e\u7684\u5f71\u54cd\u6676\u7c92\u751f\u957f\u7684\u6291\u5236\u53ef\u4ee5\u5f52\u56e0\u4e8eHo\u63ba\u6742\u5bfc\u81f4\u7684\u70e7\u7ed3\u8fc7\u7a0b\u4e2d\u6676\u7c92\u4e4b\u95f4\u7684\u6269\u6563\u7cfb\u6570\u7684\u964d\u4f4e\uff0c\u5982\u5728PZT\u57fa\u9676\u74f7\u4e2d\u89c2\u5bdf\u5230\u7684\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>3 <\/strong><strong>\u5404\u5143\u7d20\u6620\u5c04\u56fe<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120035\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe3.jpg\" alt=\"\" width=\"600\" height=\"582\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe3.jpg 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe3-300x291.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/strong><\/p>\n<p>\u7531\u4e0a\u56fe\u53ef\u77e5\u5236\u5907\u7684\u7269\u8d28\u5404\u5143\u7d20\u5904\u4e8e\u5747\u5300\u5206\u5e03\u7684\u72b6\u6001<\/p>\n<p><strong>\u56fe<\/strong><strong>4<\/strong><strong>\uff1a\u5149\u81f4\u53d1\u5149\u6fc0\u53d1\uff08<\/strong><strong>PLE<\/strong><strong>\uff09\u548c<\/strong><strong>KNLN<\/strong><strong>\uff1a<\/strong><strong>xHo<sup>3+<\/sup><\/strong><strong>\u6837\u54c1\u7684\u53d1\u5c04\uff08<\/strong><strong>PL<\/strong><strong>\uff09\u5149\u8c31<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120036\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe4.jpg\" alt=\"\" width=\"552\" height=\"429\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe4.jpg 552w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe4-300x233.jpg 300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/strong><\/p>\n<p>\u5728453nm\u6fc0\u53d1\u4e0b\uff0c\u5f3a\u70c8\u7684\u7eff\u8272\u53d1\u5c04\u548c\u5f31\u7ea2\u8272\u53d1\u5c04\u5e26\uff0c \u968f\u7740Ho<sup>3+<\/sup>\u6d53\u5ea6\u7684\u589e\u52a0\uff0c\u7eff\u8272\u53d1\u5c04\u5f3a\u5ea6\u9010\u6e10\u589e\u5927\uff0cx = 0.005\u65f6\u8fbe\u5230\u6700\u5927\u503c\uff0c\u5982\u56fe4\u63d2\u56fe\u6240\u793a\uff0c\u7531\u4e8e\u6d53\u5ea6\u731d\u706d\u6548\u5e94\uff0c\u8f83\u9ad8\u7684\u63ba\u6742\u6d53\u5ea6\u5bfc\u81f4\u663e\u7740\u7684\u4e0b\u964d\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>5<\/strong><strong>\uff1a\u6837\u54c1\u7684\u6f2b\u53cd\u5c04\u5149\u8c31\u4ee5\u53ca\u5438\u6536\u5149\u8c31\u53d8\u5316<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120037\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe5.jpg\" alt=\"\" width=\"600\" height=\"499\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe5.jpg 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe5-300x250.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/strong><\/p>\n<p>(a):KNLN\uff1a\u4e0d\u540cHo\u542b\u91cf\u9676\u74f7\u6837\u54c1\u7684\u6f2b\u53cd\u5c04\u5149\u8c31\u56fe\uff1b<\/p>\n<p>(b):\u5728407nm\u5149\u7167\u5c04\u4e4b\u524d\u548c\u4e4b\u540e\u7684KNLN\uff1axHo\u6837\u54c1\u7684\u6f2b\u53cd\u5c04\u5149\u8c31\u56fe\uff1b<\/p>\n<p>(c):\u4e0d\u540cHo\u542b\u91cf\u7684\u5438\u6536\u91cf\u53d8\u5316\uff1b<\/p>\n<p>(d):KNLN\uff1axHo\u9676\u74f7\u6837\u54c1\u7167\u5c04\u524d\u540e\u53d8\u5316\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>6<\/strong><strong>\uff1a\u5728<\/strong><strong>407nm<\/strong><strong>\u5149\u7167\u5c04\u4e4b\u524d\u548c\u4e4b\u540e\uff0c<\/strong><strong>Ho<\/strong><strong>\u542b\u91cf<\/strong><strong>x=0.005<\/strong><strong>\u7684\u6837\u54c1\u7684\u62c9\u66fc\u5149\u8c31\u53d8\u5316<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120038\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe6.jpg\" alt=\"\" width=\"552\" height=\"456\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe6.jpg 552w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe6-300x248.jpg 300w\" sizes=\"(max-width: 552px) 100vw, 552px\" \/><\/strong><\/p>\n<p>\u88ab\u6355\u83b7\u7684\u7535\u5b50\u5c06\u5bfc\u81f4\u62c9\u66fc\u6563\u5c04\u7684\u51cf\u5c0f\uff0c\u6839\u636ePlaczek\u7406\u8bba\u7531\u4e8e\u632f\u52a8\u6781\u5316\u7387\u7684\u53d8\u5316\u5f15\u8d77\u7684\u5cf0\u503c\u5f3a\u5ea6\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>7<\/strong><strong>\uff1a\u6837\u54c1\u7684\u5149\u8c31\u56fe<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120039\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe7.jpg\" alt=\"\" width=\"600\" height=\"467\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe7.jpg 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe7-300x234.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/strong><\/p>\n<p>\uff08a\uff09\u5728407nm\u7167\u5c04\u4e4b\u524d\u548c\u4e4b\u540eKNLN\uff1a0.005Ho\u6837\u54c1\u7684PL\u5149\u8c31\u53d8\u5316\uff1b<\/p>\n<p>\uff08b\uff09\u968f\u7740\u7167\u5c04\u65f6\u95f4\u7684x = 0.005\uff0c\u6837\u54c1\u7684PL\u5149\u8c31\u53d8\u5316\uff1b<\/p>\n<p>\uff08c\uff09Ho\u6d53\u5ea6\u51fd\u6570\uff1b<\/p>\n<p>\uff08d\uff09\u5728\u4e0d\u540c\u7167\u5c04\u6ce2\u957f\u4e0b\u4f5c\u4e3a\u7167\u5c04\u65f6\u95f4\u7684\u51fd\u6570\u7684\u53d1\u5149\u5207\u6362\u5bf9\u6bd4\u5ea6\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>8<\/strong><strong>\uff1a\u901a\u8fc7\u4ea4\u66ff<\/strong><strong>407nm<\/strong><strong>\u5149\u8f90\u5c04\u548c<\/strong><strong>10<\/strong><strong>\u6b21\u5faa\u73af\u4e0b\u7684\u70ed\u523a\u6fc0\u5bf9<\/strong><strong>4<\/strong><strong>\u79cd\u5178\u578b\u9676\u74f7\u6837\u54c1\u7684\u53d1\u5149\u5f00\u5173\u5bf9\u6bd4<\/strong><\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-120040\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe8.jpg\" alt=\"\" width=\"600\" height=\"490\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe8.jpg 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2018\/01\/\u56fe8-300x245.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/strong><\/p>\n<p>\u56fe8\u793a\u51fa\u4e86\u901a\u8fc7\u4ea4\u66ff407nm\u5149\u7167\uff08LD\uff0c200mW\uff09\u548c\u70ed\u523a\u6fc0\uff08230\u210310\u5206\u949f\uff09\u7684\u56db\u4e2a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u5f15\u8a00\u3011 \u8fd1\u5e74\u6765\uff0c\u57fa\u4e8eK0.5Na0.5NbO3\uff08KNN\uff09\u7684\u538b\u7535\u4f53\u9010\u6e10\u88ab\u8ba4\u4e3a\u662f\u66ff\u4ee3\u4f20\u7edf\u7684Pb\uff08Zr\uff0cTi\uff09O3\u57fa\u6750\u6599\u7684\u6700\u6709\u5e0c\u671b\u7684\u5019\u9009\u6750\u6599\u4e4b\u4e00\u3002\u4e00\u76f4\u81f4\u529b\u4e8e\u901a\u8fc7\u5404\u79cd&#8230;<\/p>\n","protected":false},"author":99,"featured_media":120042,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[215,2],"tags":[2688,31],"class_list":["post-120030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jiedu","category-keji","tag-2688","tag-dianzi"],"_links":{"self":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/120030"}],"collection":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/users\/99"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=120030"}],"version-history":[{"count":11,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/120030\/revisions"}],"predecessor-version":[{"id":120459,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/posts\/120030\/revisions\/120459"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=\/wp\/v2\/media\/120042"}],"wp:attachment":[{"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=120030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=120030"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cailiaoniu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=120030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}