Results 1 to 10 of about 994,814 (255)
Curvature-Adjustable Polymeric Nanolens Fabrication Using UV-Controlled Nanoimprint Lithography
Micromachines, 2022 Nanolenses are gaining importance in nanotechnology, but their challenging fabrication is thwarting their wider adoption. Of particular challenge is facile control of the lens’ curvature.
Qiang Li +4 more
doaj +1 more source
All metrics have curvature tensors characterised by its invariants as a limit: the \epsilon-property [PDF]
, 2011 We prove a generalisation of the $\epsilon$-property, namely that for any dimension and signature, a metric which is not characterised by its polynomial scalar curvature invariants, there is a frame such that the components of the curvature tensors can ...
Cartan E +9 more
core +2 more sources
Applied Sciences, 2022 Linear tool path is widely used in high-speed NC machining. However, the geometrical discontinuity of the corner between the linear tool paths will lead to fluctuations in speed, acceleration and jerk, which can excite machinery vibration and reduce the ...
Xuefeng Yang, Youpeng You
doaj +1 more source
Geometric Mean Curvature Lines on Surfaces Immersed in R3 [PDF]
, 2002 Here are studied pairs of transversal foliations with singularities, defined on the Elliptic region (where the Gaussian curvature $\mathcal K$ is positive) of an oriented surface immersed in $\mathbb R^3$.
Garcia, Ronaldo, Sotomayor, Jorge
core +3 more sources
A Hybrid Method for Vibration-Based Bridge Damage Detection
Remote Sensing, 2022 Damage detection algorithms employing the conventional acceleration measurements and the associated modal features may underperform due to the limited number of sensors used in the monitoring and the smoothing effect of spline functions used to increase ...
Semih Gonen, Emrah Erduran
doaj +1 more source
TOTAL SCALAR CURVATURE AND HARMONIC CURVATURE
Taiwanese Journal of Mathematics, 2014 On a compact n-dimensional manifold, it has been conjectured that a critical point metric of the total scalar curvature, restricted to the space of metrics with constant scalar curvature of unit volume, will be Einstein. This conjecture was proposed in 1984 by Besse, but has yet to be proved.
Yun, Gabjin +2 more
openaire +3 more sources
The Geometry of the Kiepert Trefoil
Mathematics, 2022 This article presents a comparative study of Kiepert’s trefoil and its related curves, combining a variety of tools from differential and algebraic geometry, integrable systems, elastica theory, and special functions.
Vladimir I. Pulov +3 more
doaj +1 more source
A note on sub-Riemannian structures associated with complex Hopf fibrations
, 2012 Sub-Riemannian structures on odd-dimensional spheres respecting the Hopf fibration naturally appear in quantum mechanics. We study the curvature maps for such a sub-Riemannian structure and express them using the Riemannian curvature tensor of the Fubini-
Chang +8 more
core +1 more source
Advanced Science, 2023 Cholesterol is essential for neuronal activity and function. Cholesterol depletion in the plasma membrane impairs synaptic transmission. However, the molecular mechanisms by which cholesterol deficiency leads to defects in vesicle fusion remain poorly ...
Houda Yasmine Ali Moussa +6 more
doaj +1 more source
Recent Concepts for Supramolecular 2D Materials
Organic Materials, 2022 Bottom-up approaches are one strategy geared towards designing novel two-dimensional materials. Supramolecular polymerization has proven to be an effective way of obtaining these architectures due to the increasing control and tunability offered by ...
Lucía Gallego +2 more
doaj +1 more source