Journal ArticleDOI
Mechanical properties of suspended graphene sheets
TLDR
In this article, the Young's modulus of stacks of graphene sheets suspended over photolithographically defined trenches in silicon dioxide was measured using an atomic force microscope, with measured spring constants scaling as expected with the dimensions of the suspended section, ranging from 1to5N∕m.Abstract:
Using an atomic force microscope, we measured effective spring constants of stacks of graphene sheets (less than 5) suspended over photolithographically defined trenches in silicon dioxide. Measurements were made on layered graphene sheets of thicknesses between 2 and 8nm, with measured spring constants scaling as expected with the dimensions of the suspended section, ranging from 1to5N∕m. When our data are fitted to a model for doubly clamped beams under tension, we extract a Young’s modulus of 0.5TPa, compared to 1TPa for bulk graphite along the basal plane, and tensions on the order of 10−7N.read more
Citations
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Journal ArticleDOI
Highly Stable and Effective Doping of Graphene by Selective Atomic Layer Deposition of Ruthenium
Minsu Kim,Ki-Ju Kim,Seung Joon Lee,Hyun-Mi Kim,Seong-Yong Cho,Min-Sik Kim,Soo-Hyun Kim,Ki-Bum Kim +7 more
TL;DR: Highly doped graphene layers achieved by Ru ALD are expected to provide a viable basis for transparent conducting electrodes and to obtain a graphene film that is both highly transparent and electrically conductive.
Journal ArticleDOI
A 3D graphene coated bioglass scaffold for bone defect therapy based on the molecular targeting approach
Yulan Wang,Xiaoxia Hu,Jing Dai,Jie Wang,Yaning Tan,Xiangdong Yang,Shuang Yang,Quan Yuan,Yufeng Zhang +8 more
TL;DR: A reduced graphene oxide (rGO) functionalized hierarchical macro-mesoporous bioactive glass scaffold integrated with an osteoblast-specific aptamer is rationally designed to recruit and induce the rapid differentiation of osteoblasts for bone regeneration.
Review of low actuation voltage RF MEMS electrostatic switches based on metallic and carbon alloys
TL;DR: In this article, the authors focus on recent progress in reducing the actuation voltage of RF switches with an emphasis on a modular approach that gives acceptable design parameters, and a number of rules that should be considered in design and fabrication of low actuation RF MEMS switches are suggested.
Book ChapterDOI
Characteristics of Graphene/Reduced Graphene Oxide
TL;DR: Graphene, the thinnest two-dimensional material, is extensively explored by interdisciplinary fields of research communities due to the excellent electronic, mechanical, optical and thermal properties as mentioned in this paper.
Journal ArticleDOI
Preparation, synthesis, properties and characterization of graphene-based 2D nano-materials for biosensors and bioelectronics
TL;DR: In this article , a detailed discussion on preparation, synthesis, properties, and characterization of graphene and graphene-based 2D nano-materials focusing on bioelectronics and biosensors has been carried out and the findings have been provided.
References
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Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
Journal ArticleDOI
Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
Journal ArticleDOI
Experimental observation of the quantum Hall effect and Berry's phase in graphene
TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.
Journal ArticleDOI
Two-dimensional atomic crystals
Kostya S. Novoselov,Da Jiang,Fred Schedin,Timothy J. Booth,V. V. Khotkevich,Sergey V. Morozov,Andre K. Geim +6 more
TL;DR: By using micromechanical cleavage, a variety of 2D crystals including single layers of boron nitride, graphite, several dichalcogenides, and complex oxides are prepared and studied.
Journal Article
Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
TL;DR: An experimental investigation of magneto-transport in a high-mobility single layer of graphene observes an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene.