Introduction

Phaedon Avouris, Tony F. Heinz, Tony Low

Research output: Chapter in Book/Report/Conference proceedingForeword/postscript

Abstract

The study and use of layered materials whose structure involves the stacking of individual platelets has a very long history. Among these materials, graphite, an allotrope of carbon, is perhaps the best-known example. It was already used by Neolithic Danubians around 4,000 BC as paint for pottery [1]. Its chemical composition was determined by Carl Wilhelm Scheelein 1779 [2], with details of its atomic structure in 1924 [3], and electronic structure calculations in the 1950s [4, 5]. Other important families of layered materials include the transition metal dichalcogenides (e.g., MoS2, MoSe2), certain metal halides (e.g., PbI2 and MgBr2), and oxides (e.g., MnO2, MoO3), perovskites (general form ABO3), layered III-VIs (e.g., GaS, InSe), and V-VIs (e.g., InSe, GaS) materials and layered silicates (clays, micas). The insulating hexagonal boron nitride (h-BN) system is another important layered material, one isostructural with graphite, but exhibiting very different properties. Currently, around 500 different layered materials have been identified [6, 7]. Until relatively recently, research and applications of layered materials involved their bulk solids. It was the mechanical exfoliation of a single graphene layer from graphite in 2004 by Geim, Novoselov, and co-workers [8] that focused the attention of the scientific community on the study of single or few layers of these materials. A considerable variety of other layered 2D materials has now also been mechanically exfoliated using adhesive tape [9]. Chemical exfoliation in liquid dispersions is another widely used technique. Ancient Mayas applied such an approach with clays for use as pigments, while in the 1960s Boehm [10] isolated thin graphite films in this fashion, and Frindt [11] exfoliated metal dichalcogenides thin films. Typically, chemical exfoliation involves dispersion of the material in high-surface tension solvents, oxidation, or intercalation by a variety of agents that lead to exfoliation [12]. Chemical techniques can produce large quantities of 2D layers in a solvent, appropriate for depositing films that can be used in industry. Increasingly, for electronics and more high-end applications, 2D layers are directly synthesized using catalytic chemical vapor deposition (CVD) or van der Waals epitaxy techniques [13]. Heterostructures involving atomic layers of different materials can also be produced, by either sequential transfers or direct growth.

Original languageEnglish (US)
Title of host publication2D Materials
Subtitle of host publicationProperties and Devices
PublisherCambridge University Press
Pages1-4
Number of pages4
ISBN (Electronic)9781316681619
ISBN (Print)9781107163713
DOIs
StatePublished - Jan 1 2017

Fingerprint

Graphite
Clay
Metal halides
Crystal atomic structure
Silicates
Boron nitride
Intercalation
Platelets
Dispersions
Epitaxial growth
Pigments
Paint
Tapes
Oxides
Graphene
Electronic structure
Transition metals
Surface tension
Heterojunctions
Chemical vapor deposition

Cite this

Avouris, P., Heinz, T. F., & Low, T. (2017). Introduction. In 2D Materials: Properties and Devices (pp. 1-4). Cambridge University Press. https://doi.org/10.1017/9781316681619.001

Introduction. / Avouris, Phaedon; Heinz, Tony F.; Low, Tony.

2D Materials: Properties and Devices. Cambridge University Press, 2017. p. 1-4.

Research output: Chapter in Book/Report/Conference proceedingForeword/postscript

Avouris, P, Heinz, TF & Low, T 2017, Introduction. in 2D Materials: Properties and Devices. Cambridge University Press, pp. 1-4. https://doi.org/10.1017/9781316681619.001
Avouris P, Heinz TF, Low T. Introduction. In 2D Materials: Properties and Devices. Cambridge University Press. 2017. p. 1-4 https://doi.org/10.1017/9781316681619.001
Avouris, Phaedon ; Heinz, Tony F. ; Low, Tony. / Introduction. 2D Materials: Properties and Devices. Cambridge University Press, 2017. pp. 1-4
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