Twisted Bi‐Layer Graphene: Microscopic Rainbows | Zendy

CamposDelgado J. | Zendy; AlgaraSiller G. | Zendy; Santos C. N. | Zendy; Kaiser U. | Zendy; Raskin J.P. | Zendy

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Twisted Bi‐Layer Graphene: Microscopic Rainbows

Author(s) -

CamposDelgado J.,

AlgaraSiller G.,

Santos C. N.,

Kaiser U.,

Raskin J.P.

Publication year - 2013

Publication title -

small

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.785

H-Index - 236

eISSN - 1613-6829

pISSN - 1613-6810

DOI - 10.1002/smll.201300050

Subject(s) - graphene , reflection (computer programming) , layer (electronics) , materials science , raman spectroscopy , substrate (aquarium) , optics , crystallography , nanotechnology , computer science , physics , chemistry , geology , oceanography , programming language

Blue, pink, and yellow colorations appear from twisted bi‐layer graphene (tBLG) when transferred to a SiO 2 /Si substrate (SiO 2 = 100 nm‐thick). Raman and electron microscope studies reveal that these colorations appear for twist angles in the 9–15° range. Optical contrast simulations confirm that the observed colorations are related to the angle‐dependent electronic properties of tBLG combined with the reflection that results from the layered structure tBLG/100 nm‐thick SiO 2 /Si.

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