{"id":32978,"date":"2019-10-31T21:50:04","date_gmt":"2019-10-31T18:50:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/razrabotana-3d-pechat-metallami-s-razresheniem-250-nm\/"},"modified":"2019-10-31T21:50:04","modified_gmt":"2019-10-31T18:50:04","slug":"razrabotana-3d-pechat-metallami-s-razresheniem-250-nm","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/razrabotana-3d-pechat-metallami-s-razresheniem-250-nm","title":{"rendered":"3D-printning af metaller med en opl\u00f8sning p\u00e5 250 nm er blevet udviklet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Brugen af 3D-print overrasker ikke l\u00e6ngere nogen. Man kan printe genstande derhjemme og p\u00e5 arbejde, b\u00e5de i metal og plastik. Det eneste der mangler, er at mindske dybden af dyserne og \u00f8ge variationen af r\u00e5materialerne. Der er stadig meget arbejde tilbage at g\u00f8re indenfor begge omr\u00e5der.<\/p>\n

\"3D-printning<\/p>\n

Endnu en bedrift i forbedringen af 3D-print blev pr\u00e6senteret<\/a><\/noindex> af forskere under ledelse af forskere fra ETH Zurich. Forskere har pr\u00e6senteret en ny lovende teknologi til printning af metal mikroobjekter med meget h\u00f8j opl\u00f8sning \u2013 ned til 250 nm. I dag udf\u00f8res 3D-print af metal mikroobjekter ved hj\u00e6lp af speciallavede bl\u00e6k. Dette er nanodelikler af metal, der er placeret i v\u00e6ske i form af en suspension. Opl\u00f8sningen af s\u00e5danne printere er mikrometer, og printningen afsluttes med en obligatorisk annealing for at fikse modellen. I denne afsluttende fase er der mange mangler, herunder lav por\u00f8sitet og forurening med organiske stoffer (opl\u00f8sningsmidler). Hvad foresl\u00e5r schweizerne?<\/p>\n

\"3D-printning
\n<\/center><\/p>\n

Forskere fra Z\u00fcrich har erstattet metal-suspensionen med direkte printning af metaller. Mere pr\u00e6cist, metallioner. Der er foresl\u00e5et en konstruktion til print hovedet med to s\u00e5kaldte forbrugelige anodest\u00e6nger. Hvorfor to? Fordi det er bedre! Man kan printe en metal mikroobjekt skiftevis med enten den ene eller den anden metal eller endda begge p\u00e5 \u00e9n gang, hvilket skaber en legering med den \u00f8nskede proportion af det ene og det andet materiale. Princippet bag den foresl\u00e5ede 3D-printning er, at ionerne af metallet brydes l\u00f8s under h\u00f8jsp\u00e6nding tilsluttet anoden og flyver mod substratet, hvor de s\u00e6tter sig og bliver til det oprindelige metal. For at dette skal fungere, er substratet d\u00e6kket med et lag af opl\u00f8sningsmiddel, hvor redox kemiske reaktioner finder sted. Printningen sker derfor med rent metal uden behov for efterf\u00f8lgende annealing.<\/p>\n

\r\n \"Afspil\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

Der er mange anvendelser af lignende teknologier. Men det der f\u00f8rst kommer i tankerne er mikroelektronik og skabelsen af metamaterialer med us\u00e6dvanlige egenskaber. 3D-print med en s\u00e5dan pr\u00e6cision vil kunne skabe tyndeste forbindelser og endda bruge organiske materialer i elektronik. N\u00e5r vi taler om metamaterialer, kan kombinationen af metaller f\u00f8re til materialer med interessante mekaniske egenskaber, for eksempel b\u00e5de fleksible og st\u00e6rke.<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Kilde: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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