Results 81 to 90 of about 654,548 (335)

Critical partitions and nodal deficiency of billiard eigenfunctions

open access: yes, 2012
The paper addresses the the number of nodal domains for eigenfunctions of Schr\"{o}dinger operators with Dirichlet boundary conditions in bounded domains. In dimension one, the $n$th eigenfunction has $n$ nodal domains. The Courant Theorem claims that in
Berkolaiko, Gregory   +2 more
core   +1 more source

Nodal staging score and adequacy of nodal staging

open access: yesOncoTargets and Therapy, 2019
The number of lymph nodes (LNs) excised in patients with pathologic N0 is limited, and it is very likely that there will be recessive node disease after surgery, so they are at risk of understaging. The purpose of the present study is to develop a nodal staging score (NSS) in a mathematical way to assess the likelihood that a pathologic N0 gastric ...
Hui-Min Chen, Ge Feng
openaire   +4 more sources

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Robust doubly charged nodal lines and nodal surfaces in centrosymmetric systems [PDF]

open access: yes, 2017
Weyl points in three spatial dimensions are characterized by a $\mathbb{Z}$-valued charge---the Chern number---which makes them stable against a wide range of perturbations.
Tom'avs Bzduvsek, M. Sigrist
semanticscholar   +1 more source

Unconventional mass enhancement around the Dirac nodal loop in ZrSiS [PDF]

open access: yesNature Physics, 2017
The topological properties of fermions arise from their low-energy Dirac-like band dispersion and associated chirality. Initially confined to points, extensions of the Dirac dispersion to lines, and even loops, have now been uncovered, and semimetals ...
S. Pezzini   +7 more
semanticscholar   +1 more source

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

open access: yesAdvanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur   +7 more
wiley   +1 more source

Magnonic triply-degenerate nodal points

open access: yes, 2017
We generalize the concept of triply-degenerate nodal points to non-collinear antiferromagnets. Here, we introduce this concept to insulating quantum antiferromagnets on the decorated honeycomb lattice, with spin-$1$ bosonic quasiparticle excitations ...
Owerre, S. A.
core   +1 more source

Bottom‐Up Programming of Cell States in Cancer Organoids with Defined Synthetic Adhesion Cues

open access: yesAdvanced Materials, EarlyView.
A bottom‐up biomaterial platform is developed to program transcriptomic states in pancreatic cancer organoids by tuning adhesion cues within synthetic matrices. By combining a Design of Experiments framework with multiobjective optimization, matrix compositions are identified that enrich specific cellular programs like EMT.
Ali Nadernezhad   +6 more
wiley   +1 more source

Effects of out-of-plane disorder on the nodal quasiparticle and superconducting gap in single-layer Bi$_2$Sr$_{1.6}Ln_{0.4}$CuO$_{6+\delta}$ ($Ln$ = La, Nd, Gd)

open access: yes, 2009
How out-of-plane disorder affects the electronic structure has been investigated for the single-layer cuprates Bi$_2$Sr$_{1.6}$$Ln$$_{0.4}$CuO$_{6+\delta}$ ($Ln$ = La, Nd, Gd) by angle-resolved photoemission spectroscopy.
Fujimori, A.   +9 more
core   +1 more source

Dirac nodal lines and induced spin Hall effect in metallic rutile oxides [PDF]

open access: yes, 2017
We have found Dirac nodal lines (DNLs) in the band structures of metallic rutile oxides ${\mathrm{IrO}}_{2}, {\mathrm{OsO}}_{2}$, and ${\mathrm{RuO}}_{2}$ and have revealed a large spin Hall conductivity contributed by these nodal lines, which explains a
Yan Sun   +4 more
semanticscholar   +1 more source

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