Results 61 to 70 of about 69,132 (324)

Attaching handles to Delaunay nodo\"{\i}ds

open access: yes, 2010
For all $m \in \mathbb N - \{0\}$, we prove the existence of a one dimensional family of genus $m$, constant mean curvature (equal to 1) surfaces which are complete, immersed in $\mathbb R^3$ and have two Delaunay ends asymptotic to nodo\"{\i}dal ends ...
Pacard, Frank, Rosenberg, Harold
core   +2 more sources

Practical Guide to the Design of Granular Hydrogels for Customizing Complex Cellular Microenvironments

open access: yesAdvanced Healthcare Materials, EarlyView.
Granular hydrogels are emerging microporous platforms for cell culture and delivery, showing great potential for replicating the complex, heterogeneous environments found in natural tissues. This review outlines the design principles of granular hydrogels, highlighting critical factors that determine the final physicochemical properties of the entire ...
Shuhan Feng, Kaiyang Chen, Shiqi Wang
wiley   +1 more source

On nonexistence of an integer regular polygon [PDF]

open access: yes, 1998
In this paper we consider the question whether there is a regular polygon in the Cartesian coordinate system such that all of its coordinates are integers. We are not interested in the case of square since it is trivial.
D. Klobučar
core   +1 more source

How Does a Delicate Insect Wing Resist Damage? Chitin Orientation Is Adapted to the Mechanical Demands at the Nanoscale

open access: yesAdvanced Materials, EarlyView.
Nanoscale chitin fiber orientations in the insect wing play a critical role in adapting to complex mechanical demands. These findings reveal two distinct and functionally adaptive chitin orientation patterns in the membranes that vary regionally, optimizing mechanical resilience and deformation control.
Chuchu Li   +5 more
wiley   +1 more source

Lattice ℂP N−1 model with ℤ N twisted boundary condition: bions, adiabatic continuity and pseudo-entropy

open access: yesJournal of High Energy Physics, 2020
We investigate the lattice ℂP N−1 sigma model on S s 1 $$ {S}_s^1 $$ (large) × S τ 1 $$ {S}_{\tau}^1 $$ (small) with the ℤ N symmetric twisted boundary condition, where a sufficiently large ratio of the circumferences (L s ≫ L τ ) is taken to approximate
Toshiaki Fujimori   +4 more
doaj   +1 more source

Cutting sequences on translation surfaces [PDF]

open access: yes, 2013
We analyze the cutting sequences associated to geodesic flow on a large class of translation surfaces, including Bouw-Moller surfaces. We give a combinatorial rule that relates a cutting sequence corresponding to a given trajectory, to the cutting ...
Davis, Diana
core   +1 more source

Astrocyte Interactions With Ti3C2Tx MXene Flakes: Insights Into Viability, Morphology, and Functionality

open access: yesAdvanced Materials Interfaces, EarlyView.
This study presents the first systematic evaluation of interactions between astrocytes and Ti3C2TX MXene flakes, a 2D nanomaterial with emerging neuroelectronic applications. Using a multimodal approach, including viability assays, morphometric analysis, and calcium imaging, this work demonstrates high biocompatibility and preserved function in ...
Dimitris Boufidis   +7 more
wiley   +1 more source

Examples, Counterexamples, and Enumeration Results for Foldings and Unfoldings between Polygons and Polytopes [PDF]

open access: yes, 2000
We investigate how to make the surface of a convex polyhedron (a polytope) by folding up a polygon and gluing its perimeter shut, and the reverse process of cutting open a polytope and unfolding it to a polygon.
Demaine, Erik D.   +3 more
core   +3 more sources

Affine regular polygons

open access: yesElemente der Mathematik, 2005
are the sides of a regular (n, k)-gon (see Fig. 1). The regular (n, 1)-gon is an ordinary regular n-gon with directed sides. The regular (n, n − 1)-gon is the same ordinary regular n-gon, only the orientation of the sides are the opposite. For 2 ≤ k ≤ n − 2 a regular (n, k)-gon is a star polygon.
openaire   +3 more sources

Ni‐Assisted Endotaxial Growth of Au Nanoparticles Within TiO2 Nanowires

open access: yesAdvanced Materials Interfaces, EarlyView.
A new synthesis route for embedding Au nanoparticles within TiO2 single‐crystal nanowires during vapor‐phase growth at 1000 °C is reported. Beyond seed composition and oscillating morphology, crystallography and resulting Au‐TiO2 interfaces are identified as a key factor governing the embedding process. This can unlock new possibilities for engineering
Zhina Razaghi, Guo‐zhen Zhu
wiley   +1 more source

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