Results 61 to 70 of about 631,257 (354)

A Triskelion-Shaped Saddle-Helix Hybrid Nanographene.

Angewandte Chemie, 2019
A unique rippled nanographene consisting of 52 fused rings is presented in which six out-of-plane motifs are fully fused into a triangular aromatic surface with a size of approximately 2.5 nm.
C. Cruz, Irene R. Márquez, S. Castro‐Fernández, J. Cuerva, E. Maçôas, A. Campaña   +5 more
semanticscholar   +1 more source

Complex saddle points in QCD at finite temperature and density

, 2014
The sign problem in QCD at finite temperature and density leads naturally to the consideration of complex saddle points of the action or effective action.
Nishimura, Hiromichi, Ogilvie, Michael C., Pangeni, Kamal   +2 more
core   +1 more source

The Region of Validity of Homogeneous Nucleation Theory [PDF]

, 1999
We examine the region of validity of Langer's picture of homogeneous nucleation. Our approach is based on a coarse-grained free energy that incorporates the effect of fluctuations with momenta above a scale k.
A. Strumia, Adams, C. Wetterich, Csernai, N. Tetradis, Strumia, Wetterich   +6 more
core   +4 more sources

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

Two-terminal conductance fluctuations in the integer quantum Hall regime [PDF]

, 1999
Motivated by recent experiments on the conductance fluctuations in mesoscopic integr quantum Hall systems, we consider a model in which the Coulomb interactions are incorporated into the picture of edge-state transport through a single saddle-point.
A. G. Galstyan, A. K. Geim, A. L. Efros, A. Morgan, B. Huckestein, B. I. Halperin, B. Jovanović, C. V. Brown, C. W. J. Beenakker, Chang-Ming Ho, D. H. Cobden, D. H. Cobden, D. H. Cobden, D. L. Maslov, D.E. Khmel’nitskii, D.E. Khmel’nitskii, H. A. Fertig, J. A. Simmons, J. K. Jain, J. M. Kinaret, M. Büttiker, M. Büttiker, P. A. Lee, P. A. Lee, P. C. Main, S. B. Kaplan, S. Cho, S. Das Sarma, S. Washburn, S. Xiong, T. Ando, T. Ando, W. J. Skocpol, Z. Wang   +33 more
core   +2 more sources

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

Advanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman, Ruben Goeminne, Kuber Singh Rawat, Veronique Van Speybroeck   +3 more
wiley   +1 more source

Saddle point states and energy barriers for vortex entrance and exit in superconducting disks and rings

, 2000
The transitions between the different vortex states of thin mesoscopic superconducting disks and rings are studied using the non-linear Ginzburg-Landau functional.
Baelus, B. J., Peeters, F. M., Schweigert, V. A.   +2 more
core   +1 more source

Covalent Organic Frameworks for Photocatalysis

Advanced Materials, EarlyView.
This review provides an overview of recent advances in covalent organic frameworks (COFs) for photocatalysis, focusing on sustainable energy applications like water splitting, hydrogen peroxide generation, and CO2 and N2 reduction. It discusses design principles, structure‐function relationships, challenges in COF photocatalysis, and strategies to ...
Bikash Mishra, Akhtar Alam, Avanti Chakraborty, Bidhan Kumbhakar, Samrat Ghosh, Pradip Pachfule, Arne Thomas   +6 more
wiley   +1 more source

FeNb2O6 as a High‐Performance Anode for Sodium‐Ion Batteries Enabled by Structural Amorphization Coupled with NbO6 Local Ordering

Advanced Materials, EarlyView.
FeNb2O6 is applied for the first time as a high‐performance anode material for sodium‐ion batteries. The presence of iron disrupts the long‐range order by local disorder of the FeO6 octahedra during initial sodiation. Simultaneously, the formation of short‐range ordered zigzag‐chain structures within the NbO6 planes establishes a robust intercalation ...
Yanchen Liu, Ana Guilherme Buzanich, Paola Alippi, Luciano A. Montoro, Kug‐Seung Lee, Taeyeol Jeon, Kilian Weißer, Martin A. Karlsen, Patrícia A. Russo, Nicola Pinna   +9 more
wiley   +1 more source

A Study on Welding Sensitivity Assessment and Deformation Control of International Maritime Organization Type C Liquefied Natural Gas Fuel Tank Support Structures Using the Direct Inherent Strain Method

Journal of Marine Science and Engineering
The increasing burden on shipowners and shipping companies due to environmental regulations imposed by the International Maritime Organization (IMO) has led to the adoption of various compliance strategies, including the use of low-sulfur fuel ...
Dong-Hee Park, Jin-Hyuk Yang, Sung-Hoon Kim, Jeong-Hyeon Kim, Jae-Myung Lee   +4 more
doaj   +1 more source