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grafeen
Wat is grafeen ?
• Grafeen – materiaal van de toekomst
• Kort: Grafeen is een molecule, een kristal, een enkele laag van atomen bestaande
uit het element koolstof gerangschikt in een repetitief hexagonaal patroon.
• Andre Geim en Konstantin Novoselov waren de eerste wetenschappers die in staat
waren om een enkele laag grafeen te isoleren in 2003 – het onderzoeksartikel
verscheen in 2004 – met behulp van een klompje grafiet en wat plakband. Al in
2010 kregen beide wetenschappers de Nobelprijs voor Natuurkunde voor de
bijdrage die ze leverden aan het onderzoek naar het wondermateriaal.
• Het is zeer zeldzaam dat een ontdekking zo snel met een Nobelprijs in aanmerking
komt. Grafeen is dan ook niet zomaar een zoveelste nieuw materiaal, maar reikt
veel verder als dat.
• Reeds van veel vroeger in de geschiedenis werd het theoretisch bestaan van
grafeen onderzocht, door PR Wallace.
Dat was in 1947, als uitgangspunt voor het begrijpen van de elektronische
eigenschappen van het meer complexe 3D grafiet.
• De geheimen van het wondermateriaal liggen verborgen in de laagdimensionale
wereld en het feit dat het koolstof is, terwijl de atomen gepositioneerd zijn in een
intrigerende geometrische vorm: De hexagon, de meest stabiele kristallijne vorm.

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grafeen

  • 2. • Grafeen – materiaal van de toekomst • Kort: Grafeen is een molecule, een kristal, een enkele laag van atomen bestaande uit het element koolstof gerangschikt in een repetitief hexagonaal patroon. • Andre Geim en Konstantin Novoselov waren de eerste wetenschappers die in staat waren om een enkele laag grafeen te isoleren in 2003 – het onderzoeksartikel verscheen in 2004 – met behulp van een klompje grafiet en wat plakband. Al in 2010 kregen beide wetenschappers de Nobelprijs voor Natuurkunde voor de bijdrage die ze leverden aan het onderzoek naar het wondermateriaal. • Het is zeer zeldzaam dat een ontdekking zo snel met een Nobelprijs in aanmerking komt. Grafeen is dan ook niet zomaar een zoveelste nieuw materiaal, maar reikt veel verder als dat. • Reeds van veel vroeger in de geschiedenis werd het theoretisch bestaan van grafeen onderzocht, door PR Wallace. Dat was in 1947, als uitgangspunt voor het begrijpen van de elektronische eigenschappen van het meer complexe 3D grafiet. • De geheimen van het wondermateriaal liggen verborgen in de laagdimensionale wereld en het feit dat het koolstof is, terwijl de atomen gepositioneerd zijn in een intrigerende geometrische vorm: De hexagon, de meest stabiele kristallijne vorm.