{"id":818,"date":"2004-12-03T09:53:00","date_gmt":"2004-12-03T08:53:00","guid":{"rendered":"https:\/\/kids.esa.int\/shapeshifting_metals\/"},"modified":"2026-10-08T00:32:38","modified_gmt":"2026-10-07T22:32:38","slug":"shapeshifting_metals","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/shapeshifting_metals\/","title":{"rendered":"Metaller som skifter form"},"content":{"rendered":"
\n

Gruer du deg til \u00e5 g\u00e5 til tannlegen? Skulle du \u00f8nske det fantes en enklere m\u00e5te \u00e5 f\u00e5 det perfekte smilet p\u00e5?<\/p>\n<\/div>\n

Romforskning bidrar til \u00e5 redusere antall bes\u00f8k hos tannlegen takket v\u00e6re innf\u00f8ringen av formminnelegeringer (SMA-er). Disse \u2018smarte\u2019 metallene har en utrolig evne til \u00e5 \u2018huske\u2019 ulike posisjoner.<\/p>\n

Akkurat som et strikkb\u00e5nd g\u00e5r de tilbake til sin opprinnelige form etter \u00e5 ha blitt strukket eller brettet. Hvis de b\u00f8yes til en ny form, vil de g\u00e5 tilbake til sin opprinnelige form ved hjelp av varme.<\/p>\n

Det europeiske romprogrammet utviklet disse legeringene til bruk i automatiske brytere. De fant imidlertid snart mange anvendelsesomr\u00e5der, blant annet til reparasjon av bruddskader.<\/p>\n

Klammer laget av b\u00f8yd SMA-tr\u00e5d festes p\u00e5 tvers av et brudd. Kroppsvarmen f\u00e5r deretter klammerne til \u00e5 lukke seg, slik at beina trekkes sammen.<\/p>\n

De lukker ikke bare bruddet, men styrker ogs\u00e5 beinet inntil det er grodd. P\u00e5 samme m\u00e5te kan de brukes til \u00e5 kontrollere tenners bevegelse.<\/p>\n

Omtrent en fjerdedel av alle barn m\u00e5 g\u00e5 til tannlegen for \u00e5 f\u00e5 bedre tannstilling. Ved hjelp av SMA-er er det n\u00e5 mulig \u00e5 lukke mellomrom mellom tennene eller rette dem ut p\u00e5 en sk\u00e5nsom, men rask m\u00e5te. Dette betyr mindre smerte og f\u00e6rre bes\u00f8k hos tannlegen.<\/p>","protected":false},"excerpt":{"rendered":"

Do you dread going to the dentist? Do you wish there was an easier way to obtain that perfect smile? Space research is helping to cut back on visits to […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2004\/12\/dentist_22\/17900050-2-eng-GB\/dentist_2.jpg","esa_banner_description":"","esa_banner_credit":"AP Photo\/Chuck Burton","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/dentist_22","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,54,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-818","post","type-post","status-publish","format-standard","hentry","category-learn","category-space-technologies-on-earth","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=818"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/818\/revisions"}],"predecessor-version":[{"id":1961,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/818\/revisions\/1961"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=818"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=818"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=818"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=818"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=818"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=818"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=818"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}