{"id":7488,"date":"2024-01-25T16:54:12","date_gmt":"2024-01-25T15:54:12","guid":{"rendered":"https:\/\/www.em-grade.com\/sem-categoria\/porque-e-que-utilizamos-uma-grelha-de-cobre-para-o-tem\/"},"modified":"2024-01-25T16:54:12","modified_gmt":"2024-01-25T15:54:12","slug":"porque-e-que-utilizamos-uma-grelha-de-cobre-para-o-tem","status":"publish","type":"post","link":"https:\/\/www.em-grade.com\/pt-pt\/sem-categoria\/porque-e-que-utilizamos-uma-grelha-de-cobre-para-o-tem\/","title":{"rendered":"Porque \u00e9 que utilizamos uma grelha de cobre para o TEM?"},"content":{"rendered":"<div data-hveid=\"CB4QAQ\">\n<div class=\"dnXCYb\" role=\"button\" aria-controls=\"_Nec4ZdflELOTkdUPgZ-eoAs_40\" aria-expanded=\"true\">\n<div data-ved=\"2ahUKEwiX1NKv-JCCAxWzSaQEHYGPB7QQuk56BAgeEAI\">As grelhas electromagn\u00e9ticas s\u00e3o geralmente utilizadas no TEM.<a href=\"https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3702 alignright\" src=\"https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-150x150.jpg\" alt=\"\" width=\"139\" height=\"139\" srcset=\"https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-150x150.jpg 150w, https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-140x140.jpg 140w, https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-100x100.jpg 100w, https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-500x500.jpg 500w, https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM-350x350.jpg 350w\" sizes=\"auto, (max-width: 139px) 100vw, 139px\" \/><\/a><br \/>\nUma grelha TEM \u00e9 um disco fino de 3,05 mm com uma malha ou outros orif\u00edcios moldados, utilizado para suportar sec\u00e7\u00f5es finas de amostras.<\/div>\n<div data-ved=\"2ahUKEwiX1NKv-JCCAxWzSaQEHYGPB7QQuk56BAgeEAI\">Esta malha permite a observa\u00e7\u00e3o de sec\u00e7\u00f5es finas (ver foto) das amostras no TEM.<\/div>\n<div class=\"L3Ezfd\" data-ved=\"2ahUKEwiX1NKv-JCCAxWzSaQEHYGPB7QQuk56BAgeEAI\">Em geral, s\u00e3o utilizadas grelhas de 200-400 malhas (linhas\/in) nas experi\u00eancias TEM.<\/div>\n<div class=\"L3Ezfd\" data-ved=\"2ahUKEwiX1NKv-JCCAxWzSaQEHYGPB7QQuk56BAgeEAI\"><strong>A maioria das grelhas electromagn\u00e9ticas \u00e9 feita de <span style=\"color: #993300;\"><em>cobre<\/em><\/span><\/strong>, <b>porque n\u00e3o \u00e9 ferromagn\u00e9tico e, portanto, distorce minimamente o campo magn\u00e9tico da lente objetiva.<\/b><\/div>\n<\/div>\n<\/div>\n<p><a href=\"https:\/\/www.em-grade.com\/wp-content\/uploads\/2024\/01\/copper-grids-TEM.jpg\"> <\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/efb7cwj5g4q.exactdn.com\/wp-content\/uploads\/2019\/10\/grids-models-e1572451143517.jpg?strip=all&amp;lossy=1&amp;sharp=1&amp;w=2560&amp;ssl=1\"> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As grelhas electromagn\u00e9ticas s\u00e3o geralmente utilizadas no TEM. Uma grelha TEM \u00e9 um disco fino de 3,05 mm com uma malha ou outros orif\u00edcios moldados, utilizado para suportar sec\u00e7\u00f5es finas&#8230;<\/p>\n","protected":false},"author":8,"featured_media":7492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"itsec_x_frame_options":"","footnotes":""},"categories":[299],"tags":[720],"class_list":["post-7488","post","type-post","status-publish","format-standard","has-post-thumbnail","category-sem-categoria","tag-grade-de-cobre"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/posts\/7488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/comments?post=7488"}],"version-history":[{"count":0,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/posts\/7488\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/media\/7492"}],"wp:attachment":[{"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/media?parent=7488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/categories?post=7488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.em-grade.com\/pt-pt\/wp-json\/wp\/v2\/tags?post=7488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}