Explore the words cloud of the Strained2DMaterials project. It provides you a very rough idea of what is the project "Strained2DMaterials" about.
The following table provides information about the project.
FREIE UNIVERSITAET BERLIN
|Coordinator Country||Germany [DE]|
|Total cost||1˙997˙452 €|
|EC max contribution||1˙997˙452 € (100%)|
1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
|Duration (year-month-day)||from 2015-11-01 to 2021-10-31|
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|1||FREIE UNIVERSITAET BERLIN||DE (BERLIN)||coordinator||1˙997˙452.00|
'We will use strain engineering as an enabling tool to study previously inaccessible or hard-to-study phenomena in two-dimensional atomic crystals (2DACs: graphene, bilayer graphene, and monolayer transition metal dichalcogenides). In our first objective, we develop unique experimental tools to control and characterize mechanical strain in 2DACs. These are the distinguishing features of our approach: (i) The use of very low disorder suspended devices; (ii) Both uniform and controlled non-uniform strain will be induced; (iii) The level of strain will be precisely adjusted and determined in-situ during measurements. We will then use controllably-strained samples to study electrical, mechanical, thermal, and optical properties of 2DACs:
Application of strain in suspended graphene will be shown to control amplitudes and dispersion relation of flexural out-of-plane phonons (FPs), a mode unique to 2D and quasi-2D materials. We will demonstrate, for the first time, that FPs dominate electrical, thermal, and mechanical of suspended graphene. Moreover, we will show dramatic mechanical softening of graphene in the regime of weak strain, similar to 'entropic spring' behaviour seen in polymers.
We will engineer strain distributions in high-mobility suspended graphene devices that translate into near-constant 'pseudomagnetic field' and observe Quantum Hall-like quantization at zero external magnetic field.
Strain-induced changes in topology of the band structure of bilayer graphene will be shown to affect Quantum Hall states and the Berry phase.
Through strain engineering, we will controllably adjust - and even make spatially dependent - the band gap energy and binding energies of excitons in monolayer transition metal dichalcogenides (TMDCs). We will study complex interplay between and direct and indirect excitons and look for emergence of a new phase of matter, an excitonic insulator, in strained narrow-bandgap TMDC. '
|year||authors and title||journal||last update|
Ryan J.â€‰T. Nicholl, Nickolay V. Lavrik, Ivan Vlassiouk, Bernadeta R. Srijanto, Kirill I. Bolotin
Hidden Area and Mechanical Nonlinearities in Freestanding Graphene
published pages: 266101, ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.118.266101
|Physical Review Letters 118/26||2020-01-20|
Rajan Singh, Ryan J.T. Nicholl, Kirill I. Bolotin, Saikat Ghosh
Motion Transduction with Thermo-mechanically Squeezed Graphene Resonator Modes
published pages: 6719-6724, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.8b02293
|Nano Letters 18/11||2020-01-20|
Andrey R. Klots, Benjamin Weintrub, Dhiraj Prasai, Daniel Kidd, Kalman Varga, Kirill A. Velizhanin, Kirill I. Bolotin
Controlled dynamic screening of excitonic complexes in 2D semiconductors
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-017-18803-y
|Scientific Reports 8/1||2020-01-20|
Xiaomin Xu, Thorsten Schultz, Ziyu Qin, Nikolai Severin, Benedikt Haas, Sumin Shen, Jan N. Kirchhof, Andreas Opitz, Christoph T. Koch, Kirill Bolotin, JÃ¼rgen P. Rabe, Goki Eda, Norbert Koch
Microstructure and Elastic Constants of Transition Metal Dichalcogenide Monolayers from Friction and Shear Force Microscopy
published pages: 1803748, ISSN: 0935-9648, DOI: 10.1002/adma.201803748
|Advanced Materials 30/39||2020-01-20|
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