Results 61 to 70 of about 2,298,010 (344)

Topological boundary modes in isostatic lattices [PDF]

Nature Physics, 2013
Frames, or lattices consisting of mass points connected by rigid bonds or central force springs, are important model constructs that have applications in such diverse fields as structural engineering, architecture, and materials science. The difference between the number of bonds and the number of degrees of freedom of these lattices determines the ...
Tom C. Lubensky, Charles L. Kane
openaire   +3 more sources

Infernal and exceptional edge modes: non-Hermitian topology beyond the skin effect

JPhys Materials, 2023
The classification of point gap topology in all local non-Hermitian (NH) symmetry classes has been recently established. However, many entries in the resulting periodic table have only been discussed in a formal setting and still lack a physical ...
M Michael Denner, Titus Neupert, Frank Schindler   +2 more
doaj   +1 more source

A Novel Mesh Quality Improvement Method for Boundary Elements

Journal of Applied Mathematics, 2012
In order to improve the boundary mesh quality while maintaining the essential characteristics of discrete surfaces, a new approach combining optimization-based smoothing and topology optimization is developed. The smoothing objective function is modified,
Hou-lin Liu, Cui Dai, Liang Dong, Ming-gao Tan   +3 more
doaj   +1 more source

A level-set-based topology optimisation of carpet cloaking devices with the boundary element method

Mechanical Engineering Journal, 2016
We investigate a topology optimisation based on the level set method for a design problem of carpet cloaking devices. In topology optimisation of carpet cloaking devices, we need to calculate the electromagnetic response in a semi-infinite domain. We use
Kenta NAKAMOTO, Hiroshi ISAKARI, Toru TAKAHASHI, Toshiro MATSUMOTO   +3 more
doaj   +1 more source

Boundary conductance in macroscopic bismuth crystals

Nature Communications, 2022
The topology of the surface states of a bismuth crystal remains an ongoing debate. Here, the authors observe surface electric conductivity with a magnetic field parallel to the two-dimensional boundary between the three-dimensional bismuth crystal and ...
Woun Kang, Felix Spathelf, Benoît Fauqué, Yuki Fuseya, Kamran Behnia   +4 more
doaj   +1 more source

TOPOLOGY OPTIMIZATION METHOD BASED ON SIMP-MMC FOR STRUCTURE SIZE PRECISE CONTROL

Jixie qiangdu, 2022
With the development of structural topology optimization methods, some scholars had proposed strategies to integrate existing topology optimization methods to improve the manufacturability of topology optimization result.
ZHANG JunFeng, LIAO JingYu, LIU EnHai
doaj  

Multipartite entanglement and topology in holography

Journal of High Energy Physics, 2021
Starting from the entanglement wedge of a multipartite mixed state we describe a purification procedure which involves the gluing of several copies. The resulting geometry has non-trivial topology and a single oriented boundary for each original boundary
Jonathan Harper
doaj   +1 more source

Monodomain Liquid Crystals of Two-Dimensional Sheets by Boundary-Free Sheargraphy

Nano-Micro Letters, 2022
Highlights Monodomain liquid crystals of graphene oxide over 30 cm is realized by boundary-free sheargraphy. The achieved monodomain liquid crystals have bidirectional sheet ordering, exhibiting unique optical, rheological, and conductive properties ...
Min Cao, Senping Liu, Qingli Zhu, Ya Wang, Jingyu Ma, Zeshen Li, Dan Chang, Enhui Zhu, Xin Ming, Florian Puchtler, Josef Breu, Ziliang Wu, Yingjun Liu, Yanqiu Jiang, Zhen Xu, Chao Gao   +15 more
doaj   +1 more source

Higher-order band topology [PDF]

Nature Reviews Physics, 2020
A conventional topological insulator (TI) has gapped bulk states but gapless edge states. The emergence of the gapless edge states is dictated by the bulk topological invariant of the insulator and the preservation of relevant symmetries.
Biye Xie, Hai-Xiao Wang, Xiujuan Zhang, P. Zhan, Jian‐Hua Jiang, Minghui Lu, Yan-Feng Chen   +6 more
semanticscholar   +1 more source

Matrix: a complex amalgam of structures and functions in tumor microenvironment

FEBS Open Bio, EarlyView.
The matrix is a dynamic, intricate three‐dimensional mesh of biomolecules with both structural and functional properties. This review deals with the complexity of this ‘molecular amalgam’ in the tumor microenvironment and highlights its importance in the maintenance and evolution of tumors by describing certain matrix biomolecules, such as ...
Spyros S. Skandalis, Evgenia Tsoukala, Theodora D. Sarantopoulou, Maria‐Elpida Christopoulou   +3 more
wiley   +1 more source