{"id":6833,"date":"2024-06-13T11:02:44","date_gmt":"2024-06-13T09:02:44","guid":{"rendered":"https:\/\/www.techscale.cz\/cs\/?p=6833"},"modified":"2024-06-27T09:08:25","modified_gmt":"2024-06-27T07:08:25","slug":"vedci-nasli-novy-zpusob-jak-ovlivnit-vlastnosti-fluorografenu","status":"publish","type":"post","link":"https:\/\/www.techscale.cz\/cs\/2024\/06\/13\/vedci-nasli-novy-zpusob-jak-ovlivnit-vlastnosti-fluorografenu\/","title":{"rendered":"V\u011bdci na\u0161li nov\u00fd zp\u016fsob, jak ovlivnit vlastnosti fluorografenu pomoc\u00ed UV sv\u011btla"},"content":{"rendered":"[vc_row type=“in_container“ full_screen_row_position=“middle“ column_margin=“default“ column_direction=“default“ column_direction_tablet=“default“ column_direction_phone=“default“ scene_position=“center“ text_color=“dark“ text_align=“left“ row_border_radius=“none“ row_border_radius_applies=“bg“ overflow=“visible“ overlay_strength=“0.3″ gradient_direction=“left_to_right“ shape_divider_position=“bottom“ bg_image_animation=“none“ gradient_type=“default“ shape_type=““][vc_column column_padding=“no-extra-padding“ column_padding_tablet=“inherit“ column_padding_phone=“inherit“ column_padding_position=“all“ column_element_direction_desktop=“default“ column_element_spacing=“default“ desktop_text_alignment=“default“ tablet_text_alignment=“default“ phone_text_alignment=“default“ background_color_opacity=“1″ background_hover_color_opacity=“1″ column_backdrop_filter=“none“ column_shadow=“none“ column_border_radius=“none“ column_link_target=“_self“ column_position=“default“ gradient_direction=“left_to_right“ overlay_strength=“0.3″ width=“1\/1″ tablet_width_inherit=“default“ animation_type=“default“ bg_image_animation=“none“ border_type=“simple“ column_border_width=“none“ column_border_style=“solid“][split_line_heading animation_type=“line-reveal-by-space“ font_style=“h2″ line_reveal_by_space_text_effect=“default“ content_alignment=“default“ mobile_content_alignment=“inherit“ link_target=“_self“ text_content=“Presti\u017en\u00ed \u010dasopis Americk\u00e9 chemick\u00e9 spole\u010dnosti ned\u00e1vno publikoval objev fascinuj\u00edc\u00edho jevu, pomoc\u00ed n\u011bj\u017e lze vytv\u00e1\u0159et speci\u00e1ln\u00ed \u010d\u00e1stice polarony ve dvourozm\u011brn\u00e9m materi\u00e1lu, fluorografenu. V\u011bdci z CATRIN Univerzity Palack\u00e9ho a V\u0160B-TUO j\u00edm otev\u0159eli nov\u00e9 cesty ve v\u00fdvoji nanotechnologi\u00ed a uk\u00e1zali, jak lze jednoduchou zm\u011bnou prost\u0159ed\u00ed dos\u00e1hnout technologick\u00fdch vylep\u0161en\u00ed. O v\u00fdznamu objevu sv\u011bd\u010d\u00ed i fakt, \u017ee se dostal i na tituln\u00ed str\u00e1nku JACS.“ font_size=“2vw“ font_size_phone=“5vw“ font_line_height=“1.3″][\/split_line_heading][divider line_type=“No Line“ custom_height=“25″][vc_column_text]\n

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Polarony jsou zvl\u00e1\u0161tn\u00ed elektricky nabit\u00e9 \u010d\u00e1stice, kter\u00e9 mohou ovlivnit vlastnosti materi\u00e1l\u016f, v\u010detn\u011b jejich vodivosti a magnetick\u00fdch schopnost\u00ed. Lze je vyu\u017e\u00edvat v \u0159ad\u011b pokro\u010dil\u00fdch aplikac\u00ed, kter\u00e9 sahaj\u00ed od sol\u00e1rn\u00edch panel\u016f p\u0159es optoelektronick\u00e1 za\u0159\u00edzen\u00ed, molekul\u00e1rn\u00ed senzory a\u017e po magneto-optick\u00e1 za\u0159\u00edzen\u00ed.[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=“in_container“ full_screen_row_position=“middle“ column_margin=“default“ column_direction=“default“ column_direction_tablet=“default“ column_direction_phone=“default“ scene_position=“center“ text_color=“dark“ text_align=“left“ row_border_radius=“none“ row_border_radius_applies=“bg“ overflow=“visible“ overlay_strength=“0.3″ gradient_direction=“left_to_right“ shape_divider_position=“bottom“ bg_image_animation=“none“][vc_column column_padding=“no-extra-padding“ column_padding_tablet=“inherit“ column_padding_phone=“inherit“ column_padding_position=“all“ column_element_direction_desktop=“default“ column_element_spacing=“default“ desktop_text_alignment=“default“ tablet_text_alignment=“default“ phone_text_alignment=“default“ background_color_opacity=“1″ background_hover_color_opacity=“1″ column_backdrop_filter=“none“ column_shadow=“none“ column_border_radius=“none“ column_link_target=“_self“ column_position=“default“ gradient_direction=“left_to_right“ overlay_strength=“0.3″ width=“1\/1″ tablet_width_inherit=“default“ animation_type=“default“ bg_image_animation=“none“ border_type=“simple“ column_border_width=“none“ column_border_style=“solid“][image_with_animation image_url=“6849″ image_size=“full“ animation_type=“entrance“ animation=“None“ animation_movement_type=“transform_y“ hover_animation=“none“ alignment=““ border_radius=“10px“ box_shadow=“none“ image_loading=“default“ max_width=“100%“ max_width_mobile=“default“][\/vc_column][\/vc_row][vc_row type=“in_container“ full_screen_row_position=“middle“ column_margin=“default“ column_direction=“default“ column_direction_tablet=“default“ column_direction_phone=“default“ scene_position=“center“ text_color=“dark“ text_align=“left“ row_border_radius=“none“ row_border_radius_applies=“bg“ overflow=“visible“ overlay_strength=“0.3″ gradient_direction=“left_to_right“ shape_divider_position=“bottom“ bg_image_animation=“none“][vc_column column_padding=“no-extra-padding“ column_padding_tablet=“inherit“ column_padding_phone=“inherit“ column_padding_position=“all“ column_element_direction_desktop=“default“ column_element_spacing=“default“ desktop_text_alignment=“default“ tablet_text_alignment=“default“ phone_text_alignment=“default“ background_color_opacity=“1″ background_hover_color_opacity=“1″ column_backdrop_filter=“none“ column_shadow=“none“ column_border_radius=“none“ column_link_target=“_self“ column_position=“default“ gradient_direction=“left_to_right“ overlay_strength=“0.3″ width=“1\/1″ tablet_width_inherit=“default“ animation_type=“default“ bg_image_animation=“none“ border_type=“simple“ column_border_width=“none“ column_border_style=“solid“][vc_column_text]\n

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\u201ePublikovan\u00fd v\u00fdzkum ukazuje, \u017ee polarony lze generovat ve fluorografenu pomoc\u00ed UV sv\u011btla, p\u0159i\u010dem\u017e kl\u00ed\u010dovou roli hraje typ rozpou\u0161t\u011bdla, ve kter\u00e9m je fluorografen dispergov\u00e1n. P\u0159i experimentov\u00e1n\u00ed jsme zjistili, \u017ee fluorografen v acetonu pod UV sv\u011btlem produkuje siln\u00fd sign\u00e1l polaron\u016f, co\u017e znamen\u00e1 vznik aktivn\u00edch spinov\u00fdch stav\u016f. Naopak v benzenu je tento jev m\u00e9n\u011b v\u00fdrazn\u00fd a v cyklohexanu t\u00e9m\u011b\u0159 neexistuje. Pozorovan\u00fd jev je z\u00e1sadn\u00ed pro pochopen\u00ed, jak okoln\u00ed prost\u0159ed\u00ed ovliv\u0148uje vznik polaron\u016f,\u201c objasnil jeden z\u00a0autor\u016f Michal Otyepka.<\/p>\n

Experimenty podpo\u0159ily teoretick\u00e9 v\u00fdpo\u010dty. Ty odhalily, \u017ee polarony vznikaj\u00ed bl\u00edzko radik\u00e1lov\u00fdch m\u00edst fluorografenu, kter\u00e1 siln\u011b interaguj\u00ed s molekulami acetonu. Po oz\u00e1\u0159en\u00ed acetonu UV sv\u011btlem doch\u00e1z\u00ed k p\u0159enosu n\u00e1boje z rozpou\u0161t\u011bdla na radik\u00e1lov\u00e1 centra ve fluorografenu, co\u017e vede ke vzniku p\u0159echodn\u00fdch magnetick\u00fdch stav\u016f polaronov\u00e9ho charakteru.<\/p>\n

V\u00fdzkum jednozna\u010dn\u011b uk\u00e1zal, jak d\u016fle\u017eit\u00e9 je prost\u0159ed\u00ed, ve kter\u00e9m materi\u00e1ly pracuj\u00ed. Vyu\u017eit\u00ed souhry materi\u00e1l\u016f s rozpou\u0161t\u011bdlem by mohlo v\u00e9st k nov\u00fdm zp\u016fsob\u016fm, jak navrhovat a vyr\u00e1b\u011bt materi\u00e1ly s p\u0159esn\u011b definovan\u00fdmi vlastnostmi pro konkr\u00e9tn\u00ed aplikace.[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

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