Article
Chemistry, Multidisciplinary
Yoon Seong Heo, Tae Wan Kim, Wooseok Lee, Jungseok Choi, Soyeon Park, Dong-Il Yeom, Jae-Ung Lee
Summary: Investigations on mesoscopic-scale stacking reconfigurations and their correlations with mechanical distortions are conducted in stacked van der Waals films. It is found that the distortions come from the transfer process or the extended impact of atomic reconstructions. Grain boundaries have a limited effect, while cracks cause inhomogeneous strain in stacked polycrystalline films.
Article
Biotechnology & Applied Microbiology
Zhang Yi, Yu Hongda, Sun Mengdi, Xu Yong
Summary: This paper presents a hybrid swarming algorithm that combines Ant Colony Optimization and Physarum Polycephalum Algorithm, and introduces the use of Van Der Waals force in the pheromone update mechanism. The improved algorithm prevents premature convergence into local optima and has demonstrated excellent accuracy and convergence time in simulations. Comparison with other advanced algorithms also indicates its superior performance. The robustness and versatility of the hybrid algorithm are further verified using the capitals of 35 Asian countries.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Mohsen Moazzami Gudarzi, Seyed Hamed Aboutalebi
Summary: Research on theoretical calculation of Casimir-van der Waals (vdW) forces has shown inconsistencies and conflicts, lacking a universal framework for accurate determination of these forces. A study proposes a universal theoretical platform for computing Casimir-vdW forces, demonstrating a match between calculated and experimentally measured results.
Article
Optics
John Joseph Marchetta, Prachi Parashar, K. Shajesh
Summary: This study explores the repulsion effects on an anisotropically polarizable atom located on the symmetry axis of an anisotropically polarizable annular disk, which has two torsion-free points on each side. The position of the second torsion-free point on either side affects the orientation dependence of the atom, showing a geometrical relationship. In the ring limit of the annular disk, an additional region of repulsion is observed.
Article
Multidisciplinary Sciences
Battulga Munkhbat, Adriana Canales, Betul Kucukoz, Denis G. Baranov, Timur O. Shegai
Summary: This study introduces a method for stable microcavity formation based on self-assembly of gold nanoflake pairs in an aqueous solution, utilizing the equilibrium between attractive Casimir forces and repulsive electrostatic forces. The system allows for tunable optical microcavities with adjustable equilibrium configurations, enabling the realization of hybrid light-matter states. These Casimir microcavities could potentially be used in opto-mechanics, nanomachinery, and cavity-induced polaritonic chemistry.
Article
Chemistry, Multidisciplinary
Hwiin Ju, Youjin Lee, Kwang-Tak Kim, In Hyeok Choi, Chang Jae Roh, Suhan Son, Pyeongjae Park, Jae Ha Kim, Taek Sun Jung, Jae Hoon Kim, Kee Hoon Kim, Je-Geun Park, Jong Seok Lee
Summary: This study reveals the possible existence of a multiferroic state with coexisting antiferromagnetic and ferroelectric orders in bilayer flakes of Nil, with a transition temperature of about 20 K. The magnitude and direction of the ferroelectric order arising from the cycloidal spin order were successfully traced using optical second-harmonic generation technique. This observation will inspire extensive efforts to demonstrate multifunctionality in vdW materials, which have been largely explored using heterostructures of singly ferroic materials.
Article
Materials Science, Multidisciplinary
Pilkyung Moon
Summary: We investigate the electronic structures of chiral twisted van der Waals atomic layers, focusing on chiral twisted graphite (CTG), and find that each CTG can host infinitely many resonant states with screw rotational symmetry and reduced Brillouin zone; regardless of the twist angle, the energies and wave functions of the resonant states can be described in a universal form of a one-dimensional chain, exhibiting a clear optical selection rule for circularly polarized light.
Review
Chemistry, Physical
Jiaojiao Ma, Kaiwen Guan, Yu Jiang, Yang Cao, Sheng Hu
Summary: Research on two-dimensional materials has provided insights into the low-dimensional science and the investigation of physical and chemical processes under two-dimensional confinement. The discoveries in this field have expanded our understanding of nano-science and stimulated the development of potential applications.
Article
Chemistry, Multidisciplinary
Fei Yang, Chao Li, Jiling Li, Pu Liu, Guowei Yang
Summary: Based on the research presented, the structure and synthesis of carbyne nanocrystals have been revealed, confirming them as one-dimensional van der Waals crystals. This discovery expands the understanding of the third form of carbon and opens up new avenues for exploration in the field of carbon materials research.
Article
Chemistry, Multidisciplinary
Lijuan Niu, Yuyin Li, Mei Zhao, Zhenjing Liu, Mengjia Zhang, Changchun Ding, Zhenjun Dou, Yihong She, Kenan Zhang, Zhengtang Luo, Lijie Zhang, Shun Wang
Summary: This study reports a van der Waals template-assisted growth method for 2D crystals, which reduces the growth temperature by up to 35% compared to traditional vapor deposition. The low-temperature growth process is attributed to the low surface diffusion barrier of precursors on van der Waals surfaces. Additionally, the grown 2D crystals can be easily peeled off and transferred to other substrates for applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yuri Shakhman, Ilan Shumilin, Daniel Harries
Summary: To cope with stress induced by high salinity and hydrostatic pressure, marine animals accumulate osmolytes. This study focuses on the mechanism of urea's action on lipid membranes and its interaction with trimethylamine N-oxide (TMAO). It is found that urea weakens the van der Waals attraction between bilayers and the effects of urea and TMAO are largely additive. This research is important in understanding the role of osmolytes in lipid adhesion and fusion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Xiangdong Guo, Wei Lyu, Tinghan Chen, Yang Luo, Chenchen Wu, Bei Yang, Zhipei Sun, F. Javier Garcia de Abajo, Xiaoxia Yang, Qing Dai
Summary: 2D monolayers can be vertically stacked in van der Waals heterostructures to support a wide range of confined polaritons. This offers advantages in terms of controlling the constituent layers, stacking sequence, and twist angles. These heterostructures have extended the performance and functions of polaritons, and potential applications include nanophotonic integrated circuits.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
H. J. Jonas, S. G. Stuij, P. Schall, P. G. Bolhuis
Summary: Researchers have developed a protocol based on a combination of theoretical Casimir potentials and angular switching functions to establish a model for synthetic colloidal patchy particles. By optimizing model parameters through Monte Carlo simulations, they were able to match experimental observations. This approach provides a systematic way to accurately model critical Casimir induced patchy particle interactions for large-scale simulations.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Review
Engineering, Electrical & Electronic
Yang Li, Baishun Yang, Shengnan Xu, Bing Huang, Wenhui Duan
Summary: 2D magnetic materials and their vdW heterostructures provide a powerful platform for exploring fascinating physical phenomena and implementing intriguing applications. This review summarizes the recent progress in the field of 2D magnetism, covering the understanding of typical 2D magnetic materials and vdW heterostructures, manipulations of their magnetic properties, interplay between magnetism and topology, valley relevant physics, and topological spin textures. The review also highlights future interests in this promising field.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Multidisciplinary Sciences
A. J. Sternbach, S. H. Chae, S. Latini, A. A. Rikhter, Y. Shao, B. Li, D. Rhodes, B. Kim, P. J. Schuck, X. Xu, X-Y Zhu, R. D. Averitt, J. Hone, M. M. Fogler, A. Rubio, D. N. Basov
Summary: Layered crystals, such as tungsten diselenide, can exhibit unconventional optical properties that allow for the propagation of subdiffractional waveguide modes with hyperbolic dispersion. This study demonstrates optically induced hyperbolicity in WSe2 and explores the role of quantum transitions of excitons in the observed polaritonic response.
