Results 71 to 80 of about 19,559 (260)

Research Update: Beyond graphene—Synthesis of functionalized quantum dots of 2D materials and their applications

APL Materials, 2018
Two-dimensional quantum dots (2D-QDs) are receiving considerable attention for a wide variety of applications in sensing, imaging, therapeutics, catalysis, energy storage, and optoelectronics, among others.
Kevin P. Musselman, Khaled H. Ibrahim, Mustafa Yavuz   +2 more
doaj   +1 more source

Coulomb dominated cavities in bilayer graphene

Physical Review Research, 2020
Electrostatic confinement in bilayer graphene van der Waals heterostructures provides a versatile platform for studying electronic transport in bilayer graphene nanostructures.
Marius Eich, Riccardo Pisoni, Chuyao Tong, Rebekka Garreis, Peter Rickhaus, Kenji Watanabe, Takashi Taniguchi, Thomas Ihn, Klaus Ensslin, Annika Kurzmann   +9 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Analogous electronic states in graphene and planer metallic quantum dots

Scientific Reports
Graphene nanostructures offer wide range of applications due to their distinguished and tunable electronic properties. Recently, atomic and molecular graphene were modeled following simple free-electron scattering by periodic muffin tin potential leading
Ahmed M. Othman, Mohammad A. Kher-Elden, Fatma Ibraheem, Moukhtar A. Hassan, Mohammed Farouk, Zakaria M. Abd El-Fattah   +5 more
doaj   +1 more source

Temporal quantum control with graphene

New Journal of Physics, 2012
We introduce a novel strategy for controlling the temporal evolution of a quantum system at the nanoscale. Our method relies on the use of graphene plasmons, which can be electrically tuned in frequency by external gates. Quantum emitters (e.g.
A Manjavacas, S Thongrattanasiri, D E Chang, F J García de Abajo   +3 more
doaj   +1 more source

Sensitivity to Heavy-Metal Ions of Unfolded Fullerene Quantum Dots

Sensors, 2017
A novel type of graphene-like quantum dots, synthesized by oxidation and cage-opening of C60 buckminsterfullerene, has been studied as a fluorescent and absorptive probe for heavy-metal ions. The lattice structure of such unfolded fullerene quantum dots (
Erica Ciotta, Stefano Paoloni, Maria Richetta, Paolo Prosposito, Pietro Tagliatesta, Chiara Lorecchio, Iole Venditti, Ilaria Fratoddi, Stefano Casciardi, Roberto Pizzoferrato   +9 more
doaj   +1 more source

Transport through graphene quantum dots

Reports on Progress in Physics, 2012
We review transport experiments on graphene quantum dots and narrow graphene constrictions. In a quantum dot, electrons are confined in all lateral dimensions, offering the possibility for detailed investigation and controlled manipulation of individual quantum systems.
Güttinger J, Molitor F, Stampfer C, Schnez S, Jacobsen A, Dröscher S, Ihn T, Ensslin K   +7 more
openaire   +4 more sources

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Graphene-based materials for photocatalytic and environmental sensing applications

Results in Engineering
Graphene Quantum Dots (GQDs) have emerged as promising materials, finding extensive applications in environmental fields such as catalysis, sensors, green fuels, and energy storage.
Sujatha Sadana, Natarajan Rajamohan, Rajasimman Manivasagan, Nitin Raut, Santhosh Paramasivam, Gianluca Gatto, Amit Kumar   +6 more
doaj   +1 more source

Dirac point induced ultralow-threshold laser and giant optoelectronic quantum oscillations in graphene-based heterojunctions

Nature Communications, 2017
In graphene, electrons possess zero effective mass in proximity to the Dirac point, an unusual feature that could trigger the development of novel photonic devices.
Golam Haider, Rini Ravindranath, Tzu-Pei Chen, Prathik Roy, Pradip Kumar Roy, Shu-Yi Cai, Huan-Tsung Chang, Yang-Fang Chen   +7 more
doaj   +1 more source