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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Size, vacancy and temperature effects on Young’s modulus of silicene nanoribbons
TL;DR: In this article, the Young's modulus (YM) of defect-free and defective silicene nanoribbons (SNRs) as a function of length and temperature was investigated.
Journal ArticleDOI
Imaging of soft materials using in situ liquid-cell transmission electron microscopy.
TL;DR: This review summarizes the breakthroughs in the field of soft material characterization by in situ liquid-cell transmission electron microscopy (TEM) and focuses mostly on soft biological species such as cells, bacteria, viruses, proteins and polymers.
Journal ArticleDOI
Mechanical bending properties of sodium titanate (Na2Ti3O7) nanowires
TL;DR: In this article, a focused ion beam (FIB) was used to manipulate the selected Na2Ti3O7 NW over a hole drilled in an indium tin oxide substrate.
Journal ArticleDOI
Enhancing thermoelectric properties of single-walled carbon nanotubes using halide compounds at room temperature and above.
Bogumiła Kumanek,Grzegorz Stando,Paweł Stando,Karolina Matuszek,Karolina Z. Milowska,Maciej Krzywiecki,Marta Gryglas-Borysiewicz,Zuzanna Ogorzałek,Mike C. Payne,Douglas R. MacFarlane,Dawid Janas +10 more
TL;DR: In this paper, a simple method to enhance the performance of single-walled carbon nanotubes (CNTs) was presented, where thin films obtained from high-quality singlewalled CNTs were doped with a spectrum of inorganic and organic halide compounds.
Journal ArticleDOI
Ultrafast quantitative nanomechanical mapping of suspended graphene
TL;DR: In this paper, peak-force imaging was used to map the nanomechanical properties of a range of suspended graphene membranes, which can be directly extracted from force curve data in real time.
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.