{"id":3003099,"date":"2013-05-24T00:00:00","date_gmt":"2018-01-22T00:00:00","guid":{"rendered":""},"modified":"2025-08-12T07:23:42","modified_gmt":"2025-08-12T06:23:42","slug":"p711-struktura-krysztalow-leybold","status":"publish","type":"product","link":"https:\/\/merazet.pl\/en\/product\/p711-struktura-krysztalow-leybold\/","title":{"rendered":"P7.1.1 Struktura kryszta\u0142\u00f3w &#8211; Leybold"},"content":{"rendered":"<h2>Do\u015bwiadczenie: uk\u0142ad regularny kryszta\u0142u przestrzennie i \u015bciennie centrowanego<\/h2>\n<p>W mikroskopie polowym, niezwykle cienkie ostrze monokryszta\u0142u tungstenu jest ustawione po \u015brodku kulistego ekranu luminescencyjnego. W s\u0105siedztwie ostrza, pole elektryczne pomi\u0119dzy kryszta\u0142em i ekranem luminescencyjnym osi\u0105ga tak wysokie nat\u0119\u017cenie, \u017ce przewodz\u0105ce elektrony mog\u0105 \u201ctunelowa\u0107\u201d z kryszta\u0142u i porusza\u0107 si\u0119 promieni\u015bcie do ekranu luminescencyjnego. Tutaj, tworzony jest obraz rozk\u0142adu emisji ostrza kryszta\u0142u, powi\u0119kszany o czynnik<\/p>\n<p>V =\u00a0R<\/p>\n<p>r<\/p>\n<p>R = 5 cm: promie\u0144 ekranu luminescencyjnego<\/p>\n<p>r = 0.1 \u2013 0.2 \u00b5m: promie\u0144 ostrza<\/p>\n<p>W pierwszej cz\u0119\u015bci do\u015bwiadczenia P7.1.1.1, ostrze tungstenowe jest oczyszczane ogrzewaj\u0105ce je do bia\u0142o\u015bci. Struktura pojawiaj\u0105ca si\u0119 na ekranie luminescencyjnym po przy\u0142o\u017ceniu pola elektrycznego odpowiada regularnej sieci przestrzennej tungstenu, kt\u00f3ra jest obserwowana w (110) kierunku, tj. kierunek jednej z przek\u0105tnych \u015bciany sze\u015bcianu. Ostatecznie, bardzo ma\u0142a ilo\u015b\u0107 baru jest odparowana w rurze tak, \u017ce poszczeg\u00f3lne atomy baru mog\u0105 osadza\u0107 si\u0119 na ostrzu tungstenu produkuj\u0105c jasne punkty na ekranie luminescencyjnym. Gdy ostrze tungstenowe jest ostro\u017cnie podgrzewane, mo\u017cliwe jest zaobserwowanie ruch\u00f3w termicznych atom\u00f3w baru.<\/p>","protected":false},"excerpt":{"rendered":"<p>Do\u015bwiadczenie: uk\u0142ad regularny kryszta\u0142u przestrzennie i \u015bciennie centrowanego W [&hellip;]<\/p>\n","protected":false},"featured_media":3405771,"template":"","meta":{"_acf_changed":false,"_members_access_role":[],"_members_access_error":""},"product_brand":[3022459],"product_cat":[3022737],"product_tag":[3015969,3016048,3007212,3008260,3015809],"class_list":["post-3003099","product","type-product","status-publish","has-post-thumbnail","product_brand-leybold","product_cat-fizyka-ciala-stalego-fizyka","product_tag-fizyka","product_tag-fizyka-ciala-stalego","product_tag-ld-didactic","product_tag-struktura-krysztalow","product_tag-zestawy-edukacyjne-stoly-elektrotechniczne","first","onbackorder","taxable","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P7.1.1 Struktura kryszta\u0142\u00f3w - Leybold - Merazet<\/title>\n<meta name=\"description\" content=\"P7.1.1 Struktura kryszta\u0142\u00f3w - Leybold. 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