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2D Materials Beyond Graphene

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2D Materials Beyond Graphene

In this animation, the next gen. of optoelectronic devices based upon the physics and tech. of layered 2D materials is presented. Following the discovery of graphene a host of other 2D materials have been discovered with a wide range of different properties. We explain the concept and unique properties of 2-dimensional materials and show that by stacking different 2D materials into carefully constructed stacks, these properties can be combined to produce artificial materials known as van der Waals heterostructures with tailor-made properties. Such systems are at the forefront of semiconductor research of which our research group in Sheffield is actively contributing:

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DIRECTED BY
Scott Dufferwiel
Maksym Sich

PRODUCED BY
Gareth Jones, 23i.co.uk

WRITTEN BY
Scott Dufferwiel
Thomas P. Lyons
Evgeny Alexeev
Alexander I. Tartakovskii

FUNDING
Arts Council England, European Union’s Horizon 2020, Marie Skłodowska-Curie Programme (grant No 676108), Graphene Flagship (grant No 696656), and the EPSRC.

© The University of Sheffield, 2016.

2D Materials Science: Graphene and Beyond

Pulickel M. Ajayan, Rice University delivered this keynote address at the 2014 MRS Fall Meeting.

Dr. Ajayan's abstract: The advent of graphene had a strong impact in the field of materials science and a large number of researchers, working in diverse areas of materials science and nanotechnology, have been engaged in the excitement provided by this unique material. Even more, recent years have seen the spectacular growth of this effort, including a large number of material compositions that adapt the two-dimensional layered structure, exemplified by graphene. This talk will explore the current scenario of two-dimensional materials science and the efforts to synthesize, characterize, manipulate and engineer monoatomic layers into functional architectures. The ability to isolate and rebuild atomic layers with different electronic structure could lead to new, artificially hybridized and stacked van der Waals solids. The design of such novel 2D structures could impact several applications ranging from electronics to catalysis.
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Graphene: A 2D materials revolution

Graphene is a two-dimensional material made up of sheets of carbon atoms. With its combination of exceptional electrical, mechanical and thermal properties, graphene has the potential to revolutionise industries ranging from healthcare to electronics.

2D Material Workshop 2018: Devices

2D Materials Devices: Aaron Franklin, Duke University
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Growth & Characterisation of 2D Materials beyond Graphene Webinar

Investigation into the physics and technology of graphene in the past decade has triggered research into a large family of similar Van der Waals structures.

This webinar will focus on recent advances in growth of 2D materials and on Raman characterisation, and elucidate the interplay between process engineering and materials characterisation.

Presented by Dr Ravi Sundaram, Oxford Instruments & Dr Tim Batten, Renishaw



2D Material Workshop 2018: Growth

2D Materials Growth: Joshua Robinson, Pennsylvania State University
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2D Material Workshop 2018: Theory

2D Materials Theory: Eugene Mele, University of Pennsylvania

Graphene/2D materials for photovoltaics

Speaker: Giulio CERULLO (Politecnico of Milano, Italy)
School on Design, Fabrication and Application of Devices for Energy Production | (smr 3290)
2019_05_13-17_45-smr3290.mp4

IRSEC'18 - Computer modelling and design of two-dimensional materials beyond graphene

By Dr. Ari Paavo Seitsonen, Research Engineer at École Normale Supérieure, Paris, France.
IRSEC’18 - 6th International Renewable and Sustainable Energy Conference
IEEE Conference, Dec. 5-8, 2018, Rabat - Morocco

This method helps scientists work with air-sensitive 2-D materials

Researchers combined an airtight cell with a fabrication technique called hot exfoliation to protect samples of black phosphorus when using them in 2-D materials research. ↓↓More info and references below↓↓
Two-dimensional materials, consisting of atomically thin layers, are being eyed by researchers for their use in energy storage, wearable electronics, and more. Researchers commonly use adhesive tape to peel off and fabricate thin flakes of some of the newer materials. But it can be tough to make large flakes of 2-D materials in this way. And some of the materials, such as black phosphorus, are air sensitive and therefore even harder to study. Now, a team at the University of Arkansas has designed an airtight sample cell and combined it with hot exfoliation to produce large samples of air-sensitive 2-D materials like black phosphorus and then image them more easily.

Read more:

Exfoliation and analysis of large-area, air-sensitive two-dimensional materials | JoVE


Two-dimensional materials could enable low-power telecommunications | C&EN


Interactive: The world of 2-D materials | C&EN


2-D materials make photodetectors ultra-efficient | C&EN


Music:
“Thief in the Night” by Kevin MacLeod

Licensed under CC BY 3.0
This video is a production of Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society. Contact us at cen_multimedia@acs.org!
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The Facinating Quantum World of Two-dimensional Materials

The Facinating Quantum World of Two-dimensional Materials - Symmetry, Interaction and Topological Effects. Lecturer Professor Steven G. Louie, Physics Department, University of California, U.S.A. Symmetry, interaction and topological effects, as well as environmental screening, dominate many of the quantum properties of reduced-dimensional systems and nanostructures. These effects often lead to manifestation of counter-intuitive concepts and phenomena that may not be so prominent or have not been seen in bulk materials. In this talk, I present some fascinating physical phenomena discovered in recent studies of atomically thin two-dimensional (2D) materials. A number of highly interesting and unexpected behaviors have been found – e.g., strongly bound excitons (electron-hole pairs) with unusual energy level structures and novel optical selection rules; light-like (massless) excitons; tunable magnetic and plasmonic properties; electron supercollimation by disorders; and novel topological phases – adding to the promise of these 2D materials for valuable applications. Professor Louie received his Ph.D. in physics from the University of California at Berkeley (UC Berkeley) in 1976. After having worked at the IBM Watson Research Center, Bell Labs, and U of Penn, he joined the UC Berkeley faculty in 1980, where he is professor of physics and concurrently a faculty senior scientist at the Lawrence Berkeley National Lab. He is an elected member of the National Academy of Sciences, the American Academy of Arts & Sciences, and the Academia Sinica (Taiwan), as well as a fellow of the American Physical Society (APS) and the American Association for the Advancement of Science. Among his many honors, he is recipient of the APS Aneesur Rahman Prize for Computational Physics, the APS Davisson-Germer Prize in Surface Physics, the Materials Theory Award of the Materials Research Society, the Foresight Institute Richard P. Feynman Prize in Nanotechnology, the U.S. Department of Energy Award for Sustained Outstanding Research in Solid State Physics, and the Jubilee Professorship of Chalmers University of Technology in Sweden. Professor Louie’s research spans a broad spectrum of topics in theoretical condensed matter physics and nanoscience. He is known for his pioneering work on ab initio calculation of electronic excitations and for his seminal work on surfaces and interfaces, nanostructures, and reduced-dimensional systems.

Philip Kim - Materials in 2-dimension and beyond: platform for novel electronics and optoelectronics

Philip Kim is an experimental condensed matter physicist. The focus of Kim’s group’s research is the mesoscopic investigation of various physical phenomena in low dimensional and nanostructured materials. Current research topics are: quantum transport in graphene and its heterostructures; developing heterostructured van der Waals material interfaces and mesoscale investigation.
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Stacking Atomic Layers One by One: Quest for New Materials and Physics: Philip Kim

Philip Kim (Harvard University) presents at the Fred Kavli Special Symposium: From Unit Cell to Biological Cell at the APS March Meeting 2019 in Boston, MA. View abstract below.

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Stacking Atomic Layers One by One: Quest for New Materials and Physics
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Modern electronics has been heavily relied on the technology to confine electrons in the interface layers of semiconductors. In recent years, scientists discovered that various atomically thin materials including graphene, a single atomic carbon layer, can be isolated. In these atomically thin materials, quantum physics allows electrons to move only in an effective 2-dimensional (2D) space. By stacking these 2D quantum materials, one can also create atomic-scale heterostructures with a wide variety of electronic and optical properties. I will discuss the creation of new heterostructures based on atomically thin materials and emerging new physics with technological implications therein.

2D Material Workshop 2017: Piezoelectrics

Reed, Evan
2D Material Piezoelectrics

Zhengyu He talk on 2D technology beyond graphene

Zhengyu presents his work on 2D materials and advances in graphene research. His talk was made at the China Oxford Scholars' Spring Conference on 15 May 2015 at Christ Church.
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01 17 19 Jie Shan

Physics & Astronomy Colloquium
Controlling Spins and Valley Psuedospins in 2D

Dr. Jie Shan
Cornell University

Abstract: Many crystals, such as graphite, are made of atomic layers that are bonded by a weak van der Waals force. As such, they can be separated into stable units of atomic thickness, which can also be integrated layer by layer into vertical heterostructures. These new 2D systems have provided unprecedented opportunities for engineering new materials properties and device functionalities. In this talk, I will discuss several examples from our lab focusing on the orbital and spin magnetic properties and the electrical control of these properties in 2D. I will present the generation of magnetization by a charge current in strained monolayer MoS2 (a nonmagnetic semiconductor) as a result of the Berry curvature effect. I will also demonstrate tuning of magnetism in 2D Crl3 (a magnetic semiconductor) by electric field or electrostatic doping. In particular, in bilayer CrI3, which is consisted of two Ising ferromagnetic monolayers coupled antiferromagnetically, we have achieved reversible switching between the interlayer antiferromagnetic and ferromagnetic states.

Tomás Palacios: 2D Materials and Ubiquitous Electronics

MIT Associate Professor of Electrical Engineering & Computer Science Tomás Palacios discusses emerging research on new applications for graphene and other 2D materials in unconventional electronics.

2D Materials for Nanoelectronics: Prospects and Integration Challenges by Prof. Robert Wallace (UTD)

The size reduction and economics of integrated circuits, captured since the 1960’s in the form of Moore’s Law, is under
serious challenge. Current industry roadmaps reveal that physical limitations include reaching aspects associated with truly atomic
dimensions, and the cost of manufacturing is increasing such that only 2 or 3 companies can afford leading edge capabilities. To
address some of the “conventions;” material’s physical limitations, “#2D materials” such as #graphene, phosphorene, h-BN, and transition
metal dichalcogenides have captured the imagination of the research community for advanced applications in nanoelectronics,
optoelectronics, and other applications. Among 2D #materials “beyond graphene,” some exhibit semiconducting behavior, such as
transition-metal #dichalcogenides (#TMDs), and present useful bandgap properties for applications even at the single atomic layer level.
Examples include “MX2”, where M = Mo, W, Sn, Hf, Zr and X = S, Se and Te.
In addition to the potentially useful bandgaps at the monolayer thickness scale, the atomically thin layers should enable thorough
electric field penetration through the channel, thus enabling superior electrostatic control. Further, with such thin layers, the
integration with suitable gate dielectrics can result in a mobility enhancement. Applications “beyond #CMOS” are also under
exploration. From an interface perspective, the ideal TMD material may ne expected to have a dearth of dangling bonds on the
surface/interface, resulting in low interface state densities which are essential for efficient carrier transport. The ideal TMD materials
have much appeal, but the reality of significant densities of defects and impurities will surely compromise the intrinsic performance
of such device technologies. This presentation will examine the state-of-the-art of these materials in view of our research on
semiconductor device applications, and the challenges and opportunities they present for electronic and optoelectronic applications.
This research was supported in part by the Semiconductor Research Corporation (SRC) NEWLIMITS Center and NIST through award
number 70NANB17H041 and the Erik Jonsson Distinguished Chair at the University of #Texas at #Dallas.


Bio:

Research in the Wallace group focuses on the study of surfaces and interfaces, particularly with applications to electronic
materials and the resultant devices fabricated from them. Current interests include materials systems leading to concepts that may
enable further scaling of integrated circuit technology and beyond #CMOS-based logic. These include the study of the surfaces and
interfaces of compound semiconductor systems including arsenides (e.g. #InGaAs), nitrides (e.g. #GaN), phosphides (e.g. InP), as well
as antimondies (e.g. GaSb), and most recently 2D materials such as graphene and transition metal dichalcogenides. He has authored
or co-authored over 400 publications in peer reviewed journals and proceedings with over 25,000 (35,000) citations according
to Scopus (#Google Scholar). #Wallace is also an inventor on 45 US and 27 international patents/applications, and a co-inventor of
the Hf-based high-k gate dielectric materials now used by the semiconductor industry for advanced high-performance logic in
microprocessors. He was named Fellow of the #AVS in 2007 and an #IEEE Fellow in 2009 for his contributions to the field of high-k dielectrics in integrated circuits.

2D Material Workshop 2017: Nanophotonics

Xia, Fengnian
2D Material Nanophotonics

Processing of Atomic Scale Materials and Devices: Graphene and 2D Materials

KNI NanoTech 2017: Processing of Atomic Scale Materials and Devices: Graphene and 2D Materials - Robert Gunn, Oxford Instruments Plasma Technology

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