Article
Nanoscience & Nanotechnology
Yansheng Liu, Miguel Angel Nino Orti, Feng Luo, Reinhold Wannemacher
Summary: Artificial structures of molecular or quantum dot emitters in contact with single-layer graphene (SLG) can achieve Forster-type resonant energy transfer (FRET) unconditionally. Researchers have designed a Sandwich device to electrically modulate FRET efficiency by taking advantage of the unique band structure and monatomic thickness of SLG.
Article
Chemistry, Multidisciplinary
Rainer Schmidt, Felix Carrascoso Plana, Norbert Marcel Nemes, Federico Mompean, Mar Garcia-Hernandez
Summary: This work demonstrates the use of electrical impedance spectroscopy (EIS) to analyze the dielectric contributions in encapsulated single graphene layers. The dielectric data qualitatively vary with the resistance of the graphene layers. For low graphene resistance, the dielectric spectra are dominated by inductive contributions, which can be separated from the intrinsic graphene resistance using an appropriate equivalent circuit model. However, for high graphene resistance, the analysis is not feasible due to the limitations of the EIS technique at high frequencies.
Article
Chemistry, Physical
Chengdong Tao, Chuanbao Liu, Yongliang Li, Weili Fan, Yanjing Su, Lijie Qiao, Ji Zhou, Yang Bai
Summary: Graphene plasmons (GPs) are efficiently excited and actively controlled using resonant graphene nanoantennas (GNAs). Spatially engineered GNAs enable tunable directional GP launchers and graphene plasmonic circuits.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Environmental Sciences
Ya Xin Zhu, Yi Neng Weng, Si Yu Zhang, Li Juan Liu, Shao Ting Du
Summary: This study analyzed the differences in phytotoxicity between single-layer graphene oxide (sGO) and multi-layer graphene oxide (mGO) on wheat plants. The results showed that sGO had a more severe inhibitory effect on root growth and nitrate uptake compared to mGO, and caused greater damage to the root tip.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Chemistry, Multidisciplinary
Xin Liu, Bowen Yang, Xin Zhou, Mingjian Wu, Erdmann Spiecker, Julien Bachmann, Frank Hauke, Andreas Hirsch, Tao Wei
Summary: In this study, we report the construction of three-dimensionally patterned graphene nano-ensembles by using a 2D-functionalization method and a molecular assembly process. The resulting quinary hybrids exhibit spatial resolution and hierarchical structure. This breakthrough lays the foundation for the development of emerging 3D-patterned graphene heterostructures.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Karlheinz Strobl, Fahd Rajab
Summary: A new optical method was developed to analyze the spatial distribution of multilayer graphene on large flat substrates. By calibrating the reflection intensity of an image, the layer numbers of graphene can be determined and visualized through a contour plot.
Article
Astronomy & Astrophysics
Akira Matsumura
Summary: We discuss the generation of field-induced entanglement between two objects in superpositions of trajectories. However, we find that the superposed state of trajectories cannot be entangled when the objects are spacelike separated. This suggests that quantum fields do not generate spacelike entanglement in the superposition of trajectories for each object.
Article
Physics, Multidisciplinary
Dunia Abbas Khudhair, Fay Fathdal, Al-Behadili Faisal Raheem, A'laa Hassan Abdul Hussain, Samar Adnan, Athmar Ali Kadhim, Ayat Hussein Adhab
Summary: This study investigates the interaction between a quantum system of the three-level ladder type and three electromagnetic fields, where two are coherent fields and one is incoherent. The atom-photon entanglement is examined in the presence of quantum interference from spontaneous emission when the two coherent fields become structural lights. The spatially dependent of the degree of entanglement (DEM) under various parametric conditions of the quantum system is discussed. It is discovered that by altering the orbital angular momentum (OAM) of the structure light, the position dependence of the DEM can be regulated. Furthermore, the findings demonstrate that the OAM number of the structure light can be determined by counting the regions of the DEM profile.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Tamoghna Das, Marcin Karczewski, Antonio Mandarino, Marcin Markiewicz, Bianka Woloncewicz, Marek Zukowski
Summary: The article discusses experimental schemes using all-optical weak homodyne measurements to reveal the nonclassicality of a single photon. It compares the schemes proposed by Tan et al and Hardy, and investigates the differences between them. It identifies that the nonclassicality in a Hardy-like setup is related to the varying strength of the local oscillators.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Applied
Shuo Han, Xianhua Nie, Shangzhi Gu, Wenyu Liu, Luchen Chen, Hao Ying, Le Wang, Zhihai Cheng, Li Zhao, Shanshan Chen
Summary: This study experimentally investigates the thermal conductivity of single-crystalline bilayer graphene as a function of interlayer twist angle and temperature. The results show that a slight twist angle can lead to a significant decrease in thermal conductivity. The study reveals the sensitivity of thermal conduction to the twist angle, providing insights into thermal transport in van der Waals bilayer systems.
APPLIED PHYSICS LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Meihui Wang, Da Luo, Bin Wang, Rodney S. Ruoff
Summary: Breakthroughs have been made in the mass production of graphene using CVD, with recent progress in growing large-area single crystal graphene. Challenges remain in achieving uniform bilayer or multilayer graphene single crystals over a large area, but the layer-by-layer transfer method shows promise for creating new types of crystals with specific layer numbers and stacking angles.
TRENDS IN CHEMISTRY
(2021)
Article
Physics, Condensed Matter
Facundo Arreyes, Federico Escudero, Juan Sebastian Ardenghi
Summary: In this study, we analyze the entanglement generation in a system consisting of two decoupled rotated graphene layers inside a planar microcavity. By considering the electromagnetic field of the cavity and using time-dependent perturbation theory, we obtain the range of geometric parameters at which the quantum states of electrons in different layers are entangled. The results show that the negativity measure can be modulated by the rotation angle between layers, allowing manipulation of X states. Furthermore, an experimental protocol is proposed to detect non-causal effects between layers, which can create entangled quantum states through the interaction with virtual photons.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Rory Runser, Moses Kodur, Justin H. Skaggs, Deniz N. Cakan, Juliana B. Foley, Mickey Finn, David P. Fenning, Darren J. Lipomi
Summary: The research shows that barrier films coated with single- and multi-layer graphene can effectively prevent degradation of perovskite films in air. A single layer of graphene reduces degradation by 15 times, while three layers of graphene can further reduce degradation by 2 times.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Akshat R. Saraf, Kamran Keramatnejad, Jennifer A. Arcila, Ravi F. Saraf
Summary: The study reveals that graphene forms a hydration layer at the electrode/electrolyte interface unlike metals, displaying insulating behavior and affecting the oscillation of ions. The differential reflectivity measurement of ion oscillation on a partially graphene-coated electrode shows significant differences between coated and uncoated areas, suggesting graphene's unique passivation properties at the graphene/Au interface. This has implications for applications like supercapacitors where the charge state of the interface is crucial.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Engineering, Chemical
Wan-Chi Lee, Luc Bondaz, Shiqi Huang, Guangwei He, Mostapha Dakhchoune, Kumar Varoon Agrawal
Summary: Reinforced graphene membranes with a two-layer composite carbon film successfully prevent crack formation during gas separation, ensuring mechanical strength and avoiding cracks at centimeter scales. The hierarchical pore structure in the composite carbon film plays a crucial role in achieving gas-sieving graphene membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
