{"id":675,"date":"2021-06-08T08:04:30","date_gmt":"2021-06-08T06:04:30","guid":{"rendered":"https:\/\/funglass.eu\/ssc2021\/?p=675"},"modified":"2021-09-14T14:26:53","modified_gmt":"2021-09-14T12:26:53","slug":"computation-and-theoretical-aspects","status":"publish","type":"post","link":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/","title":{"rendered":"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination"},"content":{"rendered":"<div id=\"call\"><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;margin-bottom: 0px;margin-top: 0px;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\" style=\"transform:translate3d(0,0,0);\"><h3>Topic: Chalcogenide, oxide, hydride materials<\/h3>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><ul class=\"fusion-checklist fusion-checklist-1\" style=\"font-size:14px;line-height:23.8px;\"><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-female fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>Jan SMOL\u00cdK<\/p>\n<\/div><\/li><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-university fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>University of Pardubice, Czech republic<\/p>\n<\/div><\/li><li class=\"fusion-li-item\"><span style=\"background-color:#00c9e2;font-size:12.32px;height:23.8px;width:23.8px;margin-right:9.8px;\" class=\"icon-wrapper circle-yes\"><i class=\"fusion-li-icon fa-graduation-cap fas\" style=\"color:#ffffff;\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\" style=\"margin-left:33.6px;\">\n<p>Department of General and Inorganic Chemistry, Faculty of Chemical Technology<\/p>\n<\/div><\/li><\/ul><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:40px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-2\" style=\"transform:translate3d(0,0,0);\"><a href=\"https:\/\/funglass.eu\/ssc2021\/wp-content\/uploads\/2021\/06\/P-08_J.-Smolik_SSC2021_TMA-measurements-of-the-viscous-flow-changes-in-glasses-induced-by-illumination.pdf\" class=\"pdfemb-viewer\" style=\"\" data-width=\"max\" data-height=\"max\"  data-toolbar=\"bottom\" data-toolbar-fixed=\"off\">P-08_J. Smol\u00edk_SSC2021_TMA measurements of the viscous flow changes in glasses induced by illumination<br\/><\/a>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:40px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-3\" style=\"transform:translate3d(0,0,0);\"><p><u>J. Smol\u00edk<sup>1*<\/sup><\/u>, Z. Zmrhalov\u00e1<sup>2<\/sup>, P. Knotek<sup>1<\/sup><sub>, <\/sub>E. \u010cerno\u0161kov\u00e1<sup>2<\/sup>, J. Schwarz<sup>1<\/sup>, L. Tich\u00fd<sup>1<\/sup><\/p>\n<p><em><sup>1<\/sup><\/em><em> Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentsk\u00e1 573, 532 10 Pardubice, Czech Republic;<\/em><\/p>\n<p><em><sup>2<\/sup><\/em><em> Joint Laboratory of Solid State<\/em><em> Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentsk\u00e1 84, 532 10 Pardubice, Czech Republic <\/em><\/p>\n<p><em><sup>*<\/sup> <\/em><em>E<\/em><em>-mail: <u>jan.smolik@student.upce.cz<\/u><\/em><\/p>\n<p><strong>Keywords:<\/strong> viscous flow, thermomechanical analysis, penetration method, laser induced changes, glass<\/p>\n<p style=\"text-align: justify;\">The viscous flow is important property of glassy materials that influences many processes (e.g. structural relaxations) and even the industrial applications (e.g. preparation of fibres) (<a href=\"#_ENREF_1\">Ko\u0161\u0165\u00e1l, Sh\u00e1n\u011blov\u00e1, &amp; M\u00e1lek, 2020<\/a>). The viscous flow can be influenced by photons with appropriate intensity and energy (e.g. in chalcogenides for example Se (<a href=\"#_ENREF_2\">Repka, Frumar, &amp; Hrdlicka, 2007<\/a>) or As<sub>2<\/sub>S<sub>3<\/sub> (<a href=\"#_ENREF_3\">Tanaka, 2002<\/a>)).<\/p>\n<p style=\"text-align: justify;\">This work is focused on the study of the viscous flow changes induced by different laser beams covering gap and sub-gap wavelengths (\u03bb = 532, 650 nm) at various temperatures below the glass transition temperature (T<sub>g<\/sub>) in the model bulk As<sub>2<\/sub>S<sub>3<\/sub> glass (E<sub>g<\/sub><sup>opt<\/sup> of As<sub>2<\/sub>S<sub>3 <\/sub>~ 2.4 eV). The viscous flow and its photo-induced changes were measured by modified Thermomechanical analyzer using penetration method with optically transparent hemispherical indenter made from the optical quality silica glass (focusing of laser beam onto a sample).<\/p>\n<p style=\"text-align: justify;\">Changes of non-illuminated and illuminated viscous flow were compared. The illumination of samples led to the increasing of the viscous flow and thus to the changes of the penetration rate of the indenter into the sample. It was found that the laser emitting at \u03bb = 650 nm (sub-gap photons) caused the higher photo-induced viscous flow changes due to the higher optical penetration depth leading to the larger light-affected volume of the glass. It was observed from cyclic measurements (illumination-dark-illumination) that the influence of photons on the viscous flow was only temporary &#8211; it vanished when laser was switched off and the viscous flow returned to its original state. Furthermore, the photo-induced viscous flow decreased with increasing temperature.<\/p>\n<p style=\"text-align: justify;\">The research was extended on the oxide glassy system PbO-ZnO-P<sub>2<\/sub>O<sub>5<\/sub> modified by CoO. The role of photons, absorbed by different way (d-d transitions), on the viscous flow was studied as well.<\/p>\n<p><strong>\u00a0<\/strong><strong>References<\/strong><\/p>\n<p>Ko\u0161\u0165\u00e1l, P., Sh\u00e1n\u011blov\u00e1, J. &amp; M\u00e1lek, J. (2020). Viscosity of chalcogenide glass-formers. <em>International Materials Reviews, 65<\/em>(2), 63\u2013101. doi: 10.1080\/09506608.2018.1564545<\/p>\n<p>Repka, M., Frumar, M. &amp; Hrdlicka, M. (2007). Photo-induced change of viscosity of glassy selenium below its glass transition temperature. <em>Journal of Physics and Chemistry of Solids, 68<\/em>(5\u20136), 940\u2013942. doi: 10.1016\/j.jpcs.2007.02.042<\/p>\n<p>Tanaka, K. (2002). Photoinduced fluidity in chalcogenide glasses. <em>Comptes Rendus Chimie, 5<\/em>(11), 805\u2013811. doi: 10.1016\/S1631-0748(02)01441-8<\/p>\n<p><strong><em>Acknowledgments<\/em><\/strong><\/p>\n<p>This work was supported by the Grant Agency of the Czech Republic (Grant no. 19-11814S)<\/p>\n<p>and by the University of Pardubice (Grant no. SGS_2021_002).<\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[7],"tags":[19,47,46,45,44],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry\" \/>\n<meta property=\"og:url\" content=\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/\" \/>\n<meta property=\"og:site_name\" content=\"SSC 2021 : Solid State Chemistry\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-08T06:04:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-09-14T12:26:53+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"creathinkstudios\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/funglass.eu\/ssc2021\/#website\",\"url\":\"https:\/\/funglass.eu\/ssc2021\/\",\"name\":\"SSC 2021 : Solid State Chemistry\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/funglass.eu\/ssc2021\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#webpage\",\"url\":\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/\",\"name\":\"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry\",\"isPartOf\":{\"@id\":\"https:\/\/funglass.eu\/ssc2021\/#website\"},\"datePublished\":\"2021-06-08T06:04:30+00:00\",\"dateModified\":\"2021-09-14T12:26:53+00:00\",\"author\":{\"@id\":\"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/c78be3acc30f7d292dbed42a3d3772ce\"},\"breadcrumb\":{\"@id\":\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/funglass.eu\/ssc2021\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination\"}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/c78be3acc30f7d292dbed42a3d3772ce\",\"name\":\"creathinkstudios\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/40991a3345832775da0fe2979559b355?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/40991a3345832775da0fe2979559b355?s=96&d=mm&r=g\",\"caption\":\"creathinkstudios\"},\"url\":\"https:\/\/funglass.eu\/ssc2021\/author\/creathinkstudios\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/","og_locale":"en_US","og_type":"article","og_title":"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry","og_url":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/","og_site_name":"SSC 2021 : Solid State Chemistry","article_published_time":"2021-06-08T06:04:30+00:00","article_modified_time":"2021-09-14T12:26:53+00:00","twitter_card":"summary_large_image","twitter_misc":{"Written by":"creathinkstudios","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/funglass.eu\/ssc2021\/#website","url":"https:\/\/funglass.eu\/ssc2021\/","name":"SSC 2021 : Solid State Chemistry","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/funglass.eu\/ssc2021\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#webpage","url":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/","name":"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination - SSC 2021 : Solid State Chemistry","isPartOf":{"@id":"https:\/\/funglass.eu\/ssc2021\/#website"},"datePublished":"2021-06-08T06:04:30+00:00","dateModified":"2021-09-14T12:26:53+00:00","author":{"@id":"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/c78be3acc30f7d292dbed42a3d3772ce"},"breadcrumb":{"@id":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/funglass.eu\/ssc2021\/computation-and-theoretical-aspects\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/funglass.eu\/ssc2021\/"},{"@type":"ListItem","position":2,"name":"P-08 TMA measurements of the viscous flow changes in glasses induced by illumination"}]},{"@type":"Person","@id":"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/c78be3acc30f7d292dbed42a3d3772ce","name":"creathinkstudios","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/funglass.eu\/ssc2021\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/40991a3345832775da0fe2979559b355?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/40991a3345832775da0fe2979559b355?s=96&d=mm&r=g","caption":"creathinkstudios"},"url":"https:\/\/funglass.eu\/ssc2021\/author\/creathinkstudios\/"}]}},"_links":{"self":[{"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/posts\/675"}],"collection":[{"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/comments?post=675"}],"version-history":[{"count":6,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/posts\/675\/revisions"}],"predecessor-version":[{"id":800,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/posts\/675\/revisions\/800"}],"wp:attachment":[{"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/media?parent=675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/categories?post=675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/funglass.eu\/ssc2021\/wp-json\/wp\/v2\/tags?post=675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}