Article
Physics, Multidisciplinary
Sergio Hernandez-Cuenca, Gary T. Horowitz, Gabriel Trevino, Diandian Wang
Summary: Even for holographic theories that abide by boundary causality, there are metrics in the full bulk Lorentzian path integral that violate this condition, leading to a puzzle regarding the commutator of field theory operators. However, a careful treatment of boundary conditions in holography reveals a natural resolution to this puzzle through the bulk path integral.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Jianjun Bian, Lucia Nicola
Summary: The oscillation of a graphene flake on an undulated substrate is investigated using classical molecular dynamics simulation. The study finds that the amplitude gradient of the undulation provides the driving force for the motion of the flake, and the oscillation frequency increases with the increase in amplitude gradient. The shape of the flake also affects the friction between the flake and the substrate.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Reza Rahighi, Omid Akhavan, Ali Shayesteh Zeraati, Seyed Mehdi Sattari-Esfahlan
Summary: The study involved the preparation and investigation of a temperature-induced degenerate p-type graphene nanopore/reduced graphene oxide (GNP/rGO) heterojunction-based nanodevice, exhibiting a robust negative differential resistance (NDR) feature. Cellulose-based perforated graphene foams (PGFs) containing numerous nanopores and showing essential p-type semiconducting characteristics were synthesized, with an observed stable and reversible NDR peak at high temperatures. The involvement of O-2 gas in the ambient environment in water-based degeneration of the initial p-type regions around the GNPs led to the appearance of an intensive quantum tunneling NDR peak.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Malgorzata Djas, Anna Matuszewska, Beata Borowa, Krystian Kowiorski, Piotr Wieczorek, Marcin Malek, Adrian Chlanda
Summary: The paper presents the research results on the use of flake graphene as an additive to plastic grease to improve its tribological properties. It was found that the addition of graphene flakes can significantly improve the anti-wear properties of the lubricant, with the best concentration at 4.00 wt.%.
Article
Engineering, Chemical
Yee Yee Khine, Xiaojun Ren, Dewei Chu, Yuta Nishina, Tobias Foller, Rakesh Joshi
Summary: This study examines the influence of different sizes of graphene oxide flakes on their chemical composition and intrinsic properties. The results show that there are slight variations in the composition of chemical moieties and slight fluctuations in the edge-to-basal plane ratio and carbon-to-oxygen ratio as the flake size increases.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Astronomy & Astrophysics
Dmitry S. Ageev
Summary: This paper studies the properties of holographic quantum error correcting code in different boundary fractal-like structures. We construct and explore various examples of uberholographic bulk reconstruction corresponding to these structures in higher dimensional spaces for Cantor-like sets, thermal states, and TT over bar -deformed conformal field theories. We demonstrate how the growth of system dimensionality emphasizes the role of Cantor set, which is due to the special constraint naturally arising in this context.
Article
Mechanics
Yue Hu, Jiantao Leng, Tienchong Chang
Summary: Graphene on a bent beam demonstrates flexotaxis mechanosensing behavior, perceiving the beam bending gradient and creating a gradient of atomic density. An analytical model confirms the mechanism and simulates the results accurately, showing potential applications for graphene in nanoscale intelligent devices and exploration of mechanosensing capabilities in other two-dimensional materials.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2021)
Article
Geochemistry & Geophysics
Dongjin Bai, Xiaolong Dong, Saibun Tjuatja, Di Zhu, Zijin Zhang
Summary: Reported radiometric measurements show that microwave emission features of layered irregular and inhomogeneous medium are characterized by incoherent and coherent radiative transfer processes. In this article, a comprehensive layer emission model (CLEM) based on the scattering operator formulation is presented to consider medium and boundary scattering as well as coherent boundary interaction in general layered medium. CLEM integrates wave-based coherent multiple reflection operators and intensity-based multiple scattering processes to comprehensively describe rough boundary scattering, volume scattering, medium/boundary interaction, and coherent boundary interaction. Simulations and analyses based on CLEM are conducted to evaluate coherent boundary interaction and different impacting factors for ice- and snow-covered ground cases, and validation is performed with emission observations of snow-covered terrain and frozen soil.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Engineering, Chemical
Tianxiong Li, Yingchun Wu, Xuecheng Wu
Summary: Digital holography of side scattering is applied for measuring morphology and 3D position of pulverized coal particles. The holographic recording is modeled and verified by experiments. This technique has an advantage in identifying irregular particle morphological and surface features simultaneously.
Article
Mechanics
Danny Dunbar, Dominic A. A. van der A, Pietro Scandura, Tom O'Donoghue
Summary: The hydrodynamics of turbulent oscillatory flow over a gravel-based irregular rough wall is studied using experimental measurements and numerical simulation. Four different flow shapes are investigated, and the results show good agreement with previous studies. Evidence of Prandtl's secondary flows and turbulence structures are observed. Non-Gaussian turbulence statistics are observed near the wall. The results provide valuable insights into the characteristics of turbulent oscillatory flow over a rough wall.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Astronomy & Astrophysics
Qian Chen, Etera R. Livine
Summary: This study explores how canonical quantum gravity establishes the relationship between volume and boundary by upgrading the quantum states of volume geometry to wave-functions valued in the boundary Hilbert space. Through tracing out volume degrees of freedom and performing a universal reconstruction procedure from boundary to bulk, correlations between bulk excitations are investigated in the induced boundary density matrices.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Chemistry, Multidisciplinary
Nathan M. M. Myers, Francisco J. J. Pena, Natalia Cortes, Patricio Vargas
Summary: This study examines the performance of a finite-time, endoreversible Otto heat engine with a working medium of monolayer or multilayered graphene under an external magnetic field. The energy spectrum of multilayered graphene is strongly dependent on the number of layers, which affects its thermodynamic behavior. The engine efficiency is found to have a simple relationship with the number of layers of graphene in the working medium. Bilayer and trilayer working mediums can achieve higher efficiency at maximum power than a classical endoreversible Otto cycle, while a monolayer graphene working medium has the same efficiency at maximum power as a classical working medium. These findings suggest that layered graphene can be a useful material for constructing efficient thermal machines for various quantum device applications.
Article
Chemistry, Multidisciplinary
Feiran Wang, Jonathan H. Gosling, Gustavo F. Trindade, Graham A. Rance, Oleg Makarovsky, Nathan D. Cottam, Zakhar Kudrynskyi, Alexander G. Balanov, Mark T. Greenaway, Ricky D. Wildman, Richard Hague, Christopher Tuck, T. Mark Fromhold, Lyudmila Turyanska
Summary: 2D materials have unique properties with potential for transformative device applications, but scalable manufacturing techniques for high-quality large-area devices are still needed. Inkjet printing with inks containing 2D material flakes is a promising solution, but further research is required on quantum transport phenomena and structural properties.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Energy & Fuels
Norazuwana Shaari, Siti Kartom Kamarudin, Raihana Bahru
Summary: Carbon quantum dots (CQDs) and graphene quantum dots (GQDs) are frequently mentioned in recent studies for their unique potential in electrical, optical, and optoelectrical properties. They are highly stable due to their carbon material and environmentally friendly nature. Various production methods and additive materials can enhance their performance, with shapes and sizes influenced by different parameters. Applications in fuel cell technology have shown improved performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Na Zhang, Zhiyuan Yang, Zhongyuan Zhang, Jingang Wang
Summary: In this study, the relationship between the structure of graphene nanoribbons (GNRs) under stress regulation and the properties of plasmons was investigated. The results showed that the band gap of Z-GNR decreased with increasing stress, while the band gap of A-GNR changed periodically with increasing stress. The plasmon effects appeared in the visible region, and the absorption spectrum showed a redshift trend.
Article
Physics, Multidisciplinary
Kun Zuo, Vincent Mourik, Daniel B. Szombati, Bas Nijholt, David J. van Woerkom, Attila Geresdi, Jun Chen, Viacheslav P. Ostroukh, Anton R. Akhmerov, Sebastien R. Plissard, Diana Car, Erik P. A. M. Bakkers, Dmitry I. Pikulin, Leo P. Kouwenhoven, Sergey M. Frolov
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
D. I. Pikulin, M. Franz
News Item
Physics, Multidisciplinary
Marcel Franz, Dmitry I. Pikulin
Article
Physics, Multidisciplinary
Jukka Vayrynen, Dmitry Pikulin, Jason Alicea
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Dmitry Pikulin, Karsten Flensberg, Leonid Glazman, Manuel Houzet, Roman M. Lutchyn
PHYSICAL REVIEW LETTERS
(2019)
Article
Multidisciplinary Sciences
Dominique Laroche, Daniel Bouman, David J. van Woerkom, Alex Proutski, Chaitanya Murthy, Dmitry I. Pikulin, Chetan Nayak, Ruben J. J. van Gulik, Jesper Nygard, Peter Krogstrup, Leo P. Kouwenhoven, Attila Geresdi
NATURE COMMUNICATIONS
(2019)
Article
Materials Science, Multidisciplinary
Armin Rahmani, Dmitry Pikulin, Ian Affleck
Article
Materials Science, Multidisciplinary
Jasper van Veen, Alex Proutski, Torsten Karzig, Dmitry Pikulin, Roman M. Lutchyn, Jesper Nygard, Peter Krogstrup, Attila Geresdi, Leo P. Kouwenhoven, John D. Watson
Article
Quantum Science & Technology
Christina Knapp, Michael Beverland, Dmitry I. Pikulin, Torsten Karzig
Correction
Materials Science, Multidisciplinary
Ian Affleck, Armin Rahmani, Dmitry Pikulin
Article
Materials Science, Multidisciplinary
Ian Affleck, Armin Rahmani, Dmitry Pikulin
Article
Materials Science, Multidisciplinary
Anffany Chen, D. I. Pikulin, M. Franz
Article
Materials Science, Multidisciplinary
Tianyu Liu, D. I. Pikulin, M. Franz
Article
Materials Science, Multidisciplinary
Rafal Skolasinski, Dmitry Pikulin, Jason Alicea, Michael Wimmer
