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10 papers
Graphene oxide dielectric permittivity at GHz and its applications for wireless humidity sensing
Xianjun Huang, Ting Leng, Thanasis Georgiou +4
Graphene oxide relative dielectric permittivity, both its real and imaginary parts, have been measured under various humidity conditions at GHz. It is demonstrated that the relativ…
Phase segregation facilitates exfoliation of franckeite crystals to a single unit cell thickness
Matěj Velický, Peter S. Toth, Alexander M. Rakowski +8
Weak interlayer van der Waals interactions in bulk crystals facilitate their mechanical exfoliation to monolayer and few-layer two-dimensional (2D) materials, which exhibit strikin…
Heterostructures produced from nanosheet-based inks
F. Withers, H. Yang, L. Britnell +13
The new paradigm of heterostructures based on two-dimensional (2D) atomic crystals has already led to the observation of exciting physical phenomena and creation of novel devices.…
Electronic Properties of Graphene Encapsulated with Different Two-Dimensional Atomic Crystals
A. V. Kretinin, Y. Cao, J. S. Tu +18
Hexagonal boron nitride is the only substrate that has so far allowed graphene devices exhibiting micron-scale ballistic transport. Can other atomically flat crystals be used as su…
Control of Radiation Damage in MoS2 by Graphene Encapsulation
Recep Zan, Quentin M Ramasse, Rashid Jalil +3
Recent dramatic progress in studying various two-dimensional (2D) atomic crystals and their heterostructures calls for better and more detailed understanding of their crystallograp…
Vertical Field Effect Transistor based on Graphene-WS2 Heterostructures for flexible and transparent electronics
Thanasis Georgiou, Rashid Jalil, Branson D. Belle +12
The celebrated electronic properties of graphene have opened way for materials just one-atom-thick to be used in the post-silicon electronic era. An important milestone was the cre…
Measurement of Filling-Factor-Dependent Magnetophonon Resonances in Graphene Using Raman Spectroscopy
Y. Kim, J. M. Poumirol, A. Lombardo +9
We perform polarization-resolved Raman spectroscopy on graphene in magnetic fields up to 45T. This reveals a filling-factor-dependent, multi-component anticrossing structure of the…
Raman spectroscopy of graphene and bilayer under biaxial strain: bubbles and balloons
Jakob Zabel, Rahul R. Nair, Anna Ott +4
In this letter we use graphene bubbles to study the Raman spectrum of graphene under biaxial (e.g. isotropic) strain. Our Gruneisen parameters are in excellent agreement with the t…
Field-effect tunneling transistor based on vertical graphene heterostructures
L. Britnell, R. V. Gorbachev, R. Jalil +10
We report a bipolar field effect tunneling transistor that exploits to advantage the low density of states in graphene and its one atomic layer thickness. Our proof-of-concept devi…
Graphene bubbles with controllable curvature
T. Georgiou, L. Britnell, P. Blake +5
Raised above the substrate and elastically deformed areas of graphene in the form of bubbles are found on different substrates. They come in a variety of shapes, including those wh…