{"id":956,"date":"2011-02-14T11:05:50","date_gmt":"2011-02-14T11:05:50","guid":{"rendered":"https:\/\/www.cnpem.staging.wpengine.com\/?p=956"},"modified":"2026-03-03T10:14:20","modified_gmt":"2026-03-03T13:14:20","slug":"novo-microscopio-eletronico-no-lme","status":"publish","type":"post","link":"https:\/\/cnpem.br\/en\/novo-microscopio-eletronico-no-lme\/","title":{"rendered":"Novo microsc\u00f3pio eletr\u00f4nico no LME"},"content":{"rendered":"

Jornal da Ci\u00eancia, em 11\/02\/2011<\/em><\/p>\n

O Laborat\u00f3rio Microscopia Eletr\u00f4nica (LME), que integra o Laborat\u00f3rio Nacional de Luz S\u00edncrotron (LNLS), inicia na ter\u00e7a-feira (15) a opera\u00e7\u00e3o para usu\u00e1rios de um novo microsc\u00f3pio eletr\u00f4nico de transmiss\u00e3o JEOL JEM 2100F HRP (TEM-FEG), este microsc\u00f3pio foi adquirido com recursos da Fapesp (processo 02\/04151-9). O per\u00edodo de submiss\u00e3o de proposta, iniciado em 15 de janeiro, encerra em 30 de outubro deste ano<\/p>\n

\n

O equipamento tem um canh\u00e3o de emiss\u00e3o por efeito de campo (FEG) e opera tanto em modo de transmiss\u00e3o –\u00a0 Transmission Electron Microscopy (TEM) -, quanto de transmiss\u00e3o com varredura –\u00a0 Scanning Transmission Electron Microscopy, (STEM).<\/p>\n

\n

O novo microsc\u00f3pio ser\u00e1 dedicado a nanoan\u00e1lises por meio do uso da espectroscopia de perda de energia dos el\u00e9trons (EELS), espectroscopia de raios-X por dispers\u00e3o em energia (XEDS) e imagens por campo escuro anular em alto \u00e2ngulo (STEM – HAADF).<\/p>\n

\n

Segundo o pesquisador Luciano Montoro, do LME, as possibilidades de utiliza\u00e7\u00e3o do equipamento aumentam significativamente a atual capacidade anal\u00edtica. “Agora \u00e9 poss\u00edvel analisar estruturas menores, propriedades eletr\u00f4nicas de materiais e elementos leves como, por exemplo, o carbono e o oxig\u00eanio”, diz.<\/p>\n

\n

Nessas t\u00e9cnicas o feixe de el\u00e9trons \u00e9 emitido em dire\u00e7\u00e3o a uma amostra bem fina com a qual sofre diversos processos de intera\u00e7\u00e3o. Nesses processos \u00e9 poss\u00edvel obter informa\u00e7\u00f5es como propriedades morfol\u00f3gicas e estruturais, composi\u00e7\u00e3o qu\u00edmica, estados de oxida\u00e7\u00e3o ou hibridiza\u00e7\u00e3o, entre outras. O diferencial desse microsc\u00f3pio \u00e9 a presen\u00e7a de um espectr\u00f4metro (filtro de energia) para a an\u00e1lise das varia\u00e7\u00f5es da energia do feixe de el\u00e9trons ap\u00f3s interagir com a amostra, e de um canh\u00e3o de el\u00e9trons do tipo FEG que permite a obten\u00e7\u00e3o de sondas anal\u00edticas de dimens\u00f5es muito menores, melhorando significativamente a resolu\u00e7\u00e3o espacial nas an\u00e1lises.<\/p>\n

\n

Por se tratar de um equipamento de opera\u00e7\u00e3o mais complexa que outros existentes no LME, o uso do microsc\u00f3pio ser\u00e1, numa primeira etapa, aberto a usu\u00e1rios com experi\u00eancia comprovada em TEM e\/ou STEM.<\/p>\n

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Mais informa\u00e7\u00f5es podem ser solicitadas pelo email: res-temfeg@lnls.br<\/a><\/p>\n

\n

Repercuss\u00e3o em:<\/p>\n

Ag\u00eancia FAPESP:<\/p>\n

https:\/\/www.agencia.fapesp.br\/materia\/13461\/especiais\/microscopio-para-nanoanalise.htm<\/a><\/p>\n

https:\/\/twitter.com\/AgenciaFAPESP\/statuses\/37754445001396224<\/a><\/p>\n

Censanet: https:\/\/www.censanet.com.br\/noticias\/ler\/id-1183317\/Lnls_recebe_novo_microscopio_eletronico<\/a><\/p>\n

diHITT: https:\/\/www.dihitt.com.br\/n\/futebol\/2011\/02\/16\/microscopio-para-nanoanalise-laboratorio-de-microscopia-eletronica-lme-do-lnls-inicia-a-operacao-de-um-novo-microscopio<\/a>–<\/p>\n

Gest\u00e3o C&T:\u00a0https:\/\/www.gestaoct.org.br\/frame_chamadas.html#mat12<\/a><\/p>\n

Inova\u00e7\u00e3o Tecnol\u00f3gica: https:\/\/www.inovacaotecnologica.com.br\/noticias\/noticia.php?artigo=microscopio-eletronico-nanociencias-brasil&id=020175110216<\/a><\/p>\n

Portal MCT: https:\/\/www.mct.gov.br\/index.php\/content\/view\/329086.html<\/a><\/p>\n

Planeta Universit\u00e1rio: https:\/\/www.planetauniversitario.com\/index.php?option=com_content&view=article&id=20240:microscopio-para-nanoanalise&catid=56:ciia-e-tecnologia&Itemid=75<\/a><\/p>\n

Secretaria de Ci\u00eancia, Tecnologia e Inova\u00e7\u00e3o do Estado da Bahia: https:\/\/www.secti.ba.gov.br\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Jornal da Ci\u00eancia, em 11\/02\/2011 O Laborat\u00f3rio Microscopia Eletr\u00f4nica (LME), que integra o Laborat\u00f3rio Nacional de Luz S\u00edncrotron (LNLS), inicia na ter\u00e7a-feira (15) a opera\u00e7\u00e3o para usu\u00e1rios de um novo…<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1163,12],"tags":[806,807,8,808],"class_list":["post-956","post","type-post","status-publish","format-standard","hentry","category-clipping-cnpem","category-clipping-lnls","tag-laboratorio-microscopia-eletronica","tag-lme","tag-lnls","tag-microscopio-eletronico","category-1163","category-12","description-off"],"acf":[],"yoast_head":"\nNovo microsc\u00f3pio eletr\u00f4nico no LME - 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