Van der Waals heterostructures
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TLDR
With steady improvement in fabrication techniques and using graphene’s springboard, van der Waals heterostructures should develop into a large field of their own.Abstract:
Fabrication techniques developed for graphene research allow the disassembly of many layered crystals (so-called van der Waals materials) into individual atomic planes and their reassembly into designer heterostructures, which reveal new properties and phenomena. Andre Geim and Irina Grigorieva offer a forward-looking review of the potential of layering two-dimensional materials into novel heterostructures held together by weak van der Waals interactions. Dozens of these one-atom- or one-molecule-thick crystals are known. Graphene has already been well studied but others, such as monolayers of hexagonal boron nitride, MoS2, WSe2, graphane, fluorographene, mica and silicene are attracting increasing interest. There are many other monolayers yet to be examined of course, and the possibility of combining graphene with other crystals adds even further options, offering exciting new opportunities for scientific exploration and technological innovation. Research on graphene and other two-dimensional atomic crystals is intense and is likely to remain one of the leading topics in condensed matter physics and materials science for many years. Looking beyond this field, isolated atomic planes can also be reassembled into designer heterostructures made layer by layer in a precisely chosen sequence. The first, already remarkably complex, such heterostructures (often referred to as ‘van der Waals’) have recently been fabricated and investigated, revealing unusual properties and new phenomena. Here we review this emerging research area and identify possible future directions. With steady improvement in fabrication techniques and using graphene’s springboard, van der Waals heterostructures should develop into a large field of their own.read more
Citations
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A Critical Review on Energy Conversion and Environmental Remediation of Photocatalysts with Remodeling Crystal Lattice, Surface, and Interface
TL;DR: This review focused on advanced photocatalytic activity with simultaneous wastewater decontamination and energy conversion, and further enriched the mechanism by proposing the electron flow and substance conversion.
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Tunneling Spin Valves Based on Fe3GeTe2/hBN/Fe3GeTe2 van der Waals Heterostructures.
TL;DR: Low-temperature anomalous Hall effect measurements show that thin Fe3GeTe2 crystals are metallic ferromagnets with an easy axis perpendicular to the layers and a very sharp magnetization switching at magnetic field values that depends slightly on their geometry, which suggests that the magnetic properties of the surface are representative of those of the bulk, as may be expected for vdW materials.
Journal ArticleDOI
Antibacterial activity of two-dimensional MoS2 sheets
Xi Yang,Jie Li,Tao Liang,Chunyan Ma,Ying-Ying Zhang,Hongzheng Chen,Nobutaka Hanagata,Huanxing Su,Mingsheng Xu +8 more
TL;DR: The antibacterial activity of two-dimensional (2D) chemically exfoliated MoS2 (ce-MoS2) sheets is reported, indicating that the tailoring of the dimension of nanomaterials and their electronic properties would manipulate antib bacterial activity.
Journal ArticleDOI
Argon Plasma Induced Phase Transition in Monolayer MoS2
Jianqi Zhu,Zhichang Wang,Hua Yu,Na Li,Jing Zhang,Jianling Meng,Mengzhou Liao,Jing Zhao,Xiaobo Lu,Luojun Du,Rong Yang,Dongxia Shi,Ying Jiang,Guangyu Zhang +13 more
TL;DR: It is found that weak Ar-plasma bombardment can locally induce 2H→1T phase transition in monolayer MoS2 to form mosaic structures, which open up a new route for phase engineering in MonolayerMoS2 and other transition metal dichalcogenide (TMD) materials.
Journal ArticleDOI
Probing the ultimate plasmon confinement limits with a van der Waals heterostructure
David Alcaraz Iranzo,Sebastien Nanot,Sebastien Nanot,Eduardo J. C. Dias,Itai Epstein,Cheng Peng,Dmitri K. Efetov,Dmitri K. Efetov,Mark B. Lundeberg,Romain Parret,Johann Osmond,Jin-Yong Hong,Jing Kong,Dirk Englund,Nuno M. R. Peres,Frank H. L. Koppens,Frank H. L. Koppens +16 more
TL;DR: It is shown that a graphene-insulator-metal heterostructure can overcome that trade-off between optical field confinement and losses, and plasmon confinement down to the ultimate limit of the length scale of one atom is demonstrated.
References
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