{"id":41559,"date":"2024-04-30T14:18:23","date_gmt":"2024-04-30T17:18:23","guid":{"rendered":"https:\/\/eesc.usp.br\/comunicacao-admin\/?p=41559"},"modified":"2024-05-07T10:39:36","modified_gmt":"2024-05-07T13:39:36","slug":"palestra-com-professor-visitante-da-universidade-de-edimburgo-em-formato-hibrido","status":"publish","type":"post","link":"https:\/\/eesc.usp.br\/comunicacao-admin\/?p=41559","title":{"rendered":"Palestra com professor visitante da Universidade de Edimburgo em formato h\u00edbrido"},"content":{"rendered":"

Na pr\u00f3xima ter\u00e7a-feira, dia 7, \u00e0s 14 horas, o Dr. Daniel Orejon, Senior Lecturer, da Universidade de Edimburgo, Reino Unido, realizar\u00e1 a palestra Tuning Droplet-Surface Interactions via Functional Grafting and Opportunities for Evaporation and Condensation Phase-Change<\/em><\/a>, abordando aspectos da pesquisa que desenvolve.<\/p>\n

O evento ser\u00e1 em ingl\u00eas e no formato h\u00edbrido: presencialmente, no Anfiteatro do Departamento de Engenharia Mec\u00e2nica (M1), e virtualmente pelo Canal do YouTube.<\/a> Toda a comunidade est\u00e1 convidada: alunos de gradua\u00e7\u00e3o, p\u00f3s-gradua\u00e7\u00e3o, pesquisadores, docentes e servidores t\u00e9cnicos.\u00a0<\/p>\n

\n\"\"Dr. Daniel Orejon (Dani) estar\u00e1 como Professor Visitante CAPES\/PrInt na EESC entre os dias 02\/05 e 16\/05\/2024 no Departamento de Engenharia Mec\u00e2nica. Dani possui bacharelado de 5 anos em Engenharia Qu\u00edmica pela Universidade de Sevilha (Espanha) e completou seu doutorado sobre os fundamentos da mudan\u00e7a de fase de evapora\u00e7\u00e3o na escala de got\u00edculas no Instituto de Materiais e Processos da Universidade de Edimburgo em 2013. Posteriormente, Dani ingressou no Instituto Internacional para Pesquisa de Energia Neutra em Carbono (WPI-I2CNER) na Universidade de Kyushu em Jap\u00e3o como Pesquisador Associado de P\u00f3s-Doutorado em 2013 e como Professor Assistente em 2016, onde direcionou seus esfor\u00e7os de pesquisa para a condensa\u00e7\u00e3o. Em 2019, Dani ingressou no Institute for Multiscale Thermofluids (IMT) da Universidade de Edimburgo como Lecturer e foi promovido a Senior Lecturer em 2022. Al\u00e9m disso, Dani atua no Comit\u00ea de Progress\u00e3o de P\u00f3s-Gradua\u00e7\u00e3o Escolar do IMT e como Gerente do Laborat\u00f3rio de Ensino da Qu\u00edmica Disciplina de engenharia. Dani tamb\u00e9m \u00e9 Professor Associado Visitante WPI-I2CNER desde 2019, Professor Visitante Estrangeiro na Escola de Engenharia de S\u00e3o Carlos da Universidade de S\u00e3o Paulo e \u00e9 Fellow da Academia de Ensino Superior. Dani recebeu o pr\u00eamio Kakenhi para Jovens e Cientistas em In\u00edcio de Carreira duas vezes (2016 e 2018), recebeu uma bolsa de pesquisa da Royal Society (2020) e um pr\u00eamio de colabora\u00e7\u00e3o estrat\u00e9gica universit\u00e1ria entre a UoE e a Universidade de Rice (2023). Dani tamb\u00e9m participou do Programa de Promo\u00e7\u00e3o de Aplica\u00e7\u00f5es de Microgravidade SciSpacE da Ag\u00eancia Espacial Europeia (ESA) (2020-2022). Os interesses de pesquisa de Dani abrangem fen\u00f4menos interfaciais entre filmes\/got\u00edculas l\u00edquidas e superf\u00edcies s\u00f3lidas, com aten\u00e7\u00e3o especial ao efeito da molhabilidade e estrutura da superf\u00edcie, natureza l\u00edquida e ambiente circundante nos mecanismos fundamentais de umedecimento e espalhamento, abrangendo transfer\u00eancia de calor e massa durante a evapora\u00e7\u00e3o e\/ou mudan\u00e7a de fase de condensa\u00e7\u00e3o. Ele se concentra nas intera\u00e7\u00f5es relevantes em diferentes escalas de comprimento, da micro \u00e0 nanoescala, bem como nas propriedades termof\u00edsicas de todas as tr\u00eas fases s\u00f3lidas, l\u00edquidas e gasosas presentes, para massa interfacial e aplica\u00e7\u00f5es relacionadas ao transporte t\u00e9rmico.<\/p>\n

Resumo da apresenta\u00e7\u00e3o:<\/strong>
\nThe interactions between liquid droplets\/films and solid surfaces are ubiquitous and intrinsic to everyday domestic and industrial applications, which include thermal management of portable electronics, water treatment and harvesting, energy generation, etc. More specifically, functional coatings fabricated via easy and scalable silicone oil grafting are considered as potential candidates for lowering such droplet-surface interactions. The aim of this talk is two-fold: on one hand, we fabricate and tune the droplet-surface interactions in terms contact angle hysteresis and pinning while maintaining a similar hydrophobic wettability, by adopting different grafting coating parameters. The grafting procedure reported was adopted from Eifert et al. while the grafting parameters investigated are the viscosity of the oil, the application method related to the volume of oil as pipette or dip coating, and the number of layers. Grafting procedure has been optimised with contact angle hysteresis values down to <1\u00b0 after one single grafting step. Moreover, depending on the grafting parameters adopted the contact angle hysteresis of the functional surfaces could be tuned between 1\u00b0 and 20\u00b0, while maintaining the same hydrophobicity with contact angles near 108\u00b0. On the other hand, the wide range of contact angle hysteresis function of the grafting parameters adopted in turn anticipate different droplet-grafted surface interactions during evaporation and\/or condensation phase-change. Evaporation behaviours are self-contained within those reported on benchmarked hydrophilic silicon and hydrophobic Teflon, and can be tuned function of the fabrication parameters. Moreover, the complete suppression of the initial contact line pinning typically encountered on benchmarked smooth hydrophobic surfaces is further attained. In addition, the duration of the different evaporation modes and pinning forces arising from the different fabrication parameters are further introduced to support the findings. Last, we enable the control of the droplet size distribution during condensation on surfaces with similar wettability but with different hysteresis for the first time. To sum up, wetting and phase-change mechanisms introduced here suggest promising capabilities for oil grafted surfaces for microfluidics, self-cleaning, thermal management and condensation phase-change applications.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

O evento acontecer\u00e1 a partir das 14 horas, no Anfiteatro do Departamento de Engenharia Mec\u00e2nica (M1).<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[175,37],"tags":[],"class_list":["post-41559","post","type-post","status-publish","format-standard","hentry","category-eventos","category-noticias","entry"],"_links":{"self":[{"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/posts\/41559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=41559"}],"version-history":[{"count":3,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/posts\/41559\/revisions"}],"predecessor-version":[{"id":41692,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=\/wp\/v2\/posts\/41559\/revisions\/41692"}],"wp:attachment":[{"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eesc.usp.br\/comunicacao-admin\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}