Results 71 to 80 of about 313,825 (290)

Graphene bilayer structures with superfluid magnetoexcitons [PDF]

Nanoscale Research Letters, 2012
We study superfluid behavior of a gas of spatially indirect magnetoexcitons with reference to a system of two graphene layers embedded in a multilayer dielectric structure. The system is considered as an alternative of a double quantum well in a GaAs haterostructure. We determine a range of parameters (interlayer distance, dielectric constant, magnetic
Pikalov, Alexandr A, Fil, Dmitrii V
openaire   +3 more sources

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Chiral Tunneling in a Twisted Graphene Bilayer [PDF]

Physical Review Letters, 2013
The perfect transmission in graphene monolayer and the perfect reflection in Bernal graphene bilayer for electrons incident in the normal direction of a potential barrier are viewed as two incarnations of the Klein paradox. Here we show a new and unique incarnation of the Klein paradox. Owing to the different chiralities of the quasiparticles involved,
He, Wen-Yu, Chu, Zhao-Dong, He, Lin
openaire   +3 more sources

Nitrospinics: Nitride Materials for Spin‐Orbit and Orbital Torques From Memory to Artificial Intelligence

Advanced Functional Materials, EarlyView.
Further advances in applications can be anticipated through the development of unique and functional materials beyond conventional alloys. Nitrogen enables tailor‐made orbital textures in various transition‐metal hosts, paving the way for devices ranging from spintronics memory to artificial intelligence hardware.
Prabhat Kumar, Gaurav Kumar Shukla, Yoshio Miura, Shinji Isogami   +3 more
wiley   +1 more source

Theory of correlated insulating behaviour and spin-triplet superconductivity in twisted double bilayer graphene

Nature Communications, 2019
Twisted bilayer graphene exhibits correlated electronic phases and superconductivity, but its precise nature is under debate. Here, Lee and Khalaf et al.
Jong Yeon Lee, Eslam Khalaf, Shang Liu, Xiaomeng Liu, Zeyu Hao, Philip Kim, Ashvin Vishwanath   +6 more
doaj   +1 more source

Band Structures of Bilayer Graphene Superlattices [PDF]

Physical Review Letters, 2011
We formulate a low energy effective Hamiltonian to study superlattices in bilayer graphene (BLG) using a minimal model which supports quadratic band touching points. We show that a one dimensional (1D) periodic modulation of the chemical potential or the electric field perpendicular to the layers leads to the generation of zero energy anisotropic ...
Killi, Matthew, Wu, Si, Paramekanti, Arun   +2 more
openaire   +3 more sources

Microfluidic Engineering of Microgels: A Review of Emerging Technologies, Materials, Fabrication Strategies, and Applications

Advanced Healthcare Materials, EarlyView.
Recent advances in microfluidic technologies for microgel fabrication are critically reviewed, highlighting the capabilities and limitations of major microfluidic platforms and discussing how platform design, material selection, and crosslinking strategies influence microgel architecture and functionality. Current challenges and future opportunities in
Afshin Abrishamkar, Laura Neely, Cynthia Pham, Nada Ibrahim, Alexis Larios‐Cervantes, Ben A. Kertesz, Todd Hoare   +6 more
wiley   +1 more source

Reversible Loss of Bernal Stacking during the Deformation of Few-Layer Graphene in Nanocomposites [PDF]

, 2013
The deformation of nanocomposites containing graphene flakes with different numbers of layers has been investigated with the use of Raman spectroscopy. It has been found that there is a shift of the 2D band to lower wavenumber and that the rate of band ...
Novoselov, Kostya S., Li, L, Hinks, JA, Young, Robert J., Haigh, SJ, Warner, JH, Warner, Jamie H., Gong, Lei, Jalil, Rashid, Hinks, Jonathan A., Ding, Feng, Jalil, R, Xu, ZW, Li, Li, Xu, Z, Novoselov, KS, Riaz, Ibtsam, Ding, F, Haigh, Sarah J., Young, Robert J.; id_orcid, Haigh, Sarah J.; id_orcid, Kinloch, Ian A., Kinloch, IA, Gong, L, Xu, Ziwei, Young, RJ, Riaz, I   +26 more
core   +1 more source

Design a novel methodology for the goal-directed control of epitaxial graphene fabrication [PDF]

, 2013
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The elusive 2D carbon poly-type was argued more than 70 years ago.
Issakov, Nikolai
core   +5 more sources

Liquid-Crystal Terahertz Quarter-Wave Plate Using Chemical-Vapor-Deposited Graphene Electrodes

IEEE Photonics Journal, 2015
Quarter-wave operation or a phase shift of more than π/2, which is approximately ten times greater than that reported in previous works using liquid crystals (LCs) and graphene electrodes, was demonstrated.
Chan-Shan Yang, Chun Kuo, Chiu-Chun Tang, J. C. Chen, Ru-Pin Pan, Ci-Ling Pan   +5 more
doaj   +1 more source