Results 71 to 80 of about 865 (218)
Nitrogen‐Site Isomerism Unlocks Exciton Dissociation in Vinylene‐Linked COF‐Based Photocatalysts
EcoEnergy, EarlyView.Two regioisomeric vinylene‐linked covalent organic frameworks (COFs) constructed from diazine units with different nitrogen positions are developed for photocatalytic hydrogen evolution reaction (HER). Although structurally similar, the isomeric COFs exhibit distinct electron distribution and charge‐separation behaviors, leading to a more than twofold ...
Ming Wang +10 more
wiley +1 more source
Great circle links in the three-sphere [PDF]
, 2003 We investigate great circle links in the three-sphere, the class of links where each component is a great circle. Using the geometry of their complements, we classify such links up to five components. For any two-bridge knot complement,
Walsh, Genevieve
core
Photoreversible Polyurea Actuators With Spatiotemporal Control and Adaptive Mechanics
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A light–thermal responsive polyurea network incorporating reversibly dimerizable anthracene units enables spatiotemporal modulation of cross‐linking density and nearly 400‐fold stiffness tuning. Integrating programmable anisotropy, photopatterning, self‐healing, and photowelding within a single framework, this bioinspired “one network–multifunction ...
Zhiwen Song +7 more
wiley +1 more source
Surface-knots in 4-space: an introduction [PDF]
, 2017 This introductory volume provides the basics of surface-knots and related topics, not only for researchers in these areas but also for graduate students and researchers who are not familiar with the field.
Kamada, Seiichi, Seiichi Kamada
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Fabrication process of phase change microcapsules using a Pickering emulsion template method and their subsequent applications. The increasing demand for efficient thermal energy storage systems has driven the development of phase change material microcapsules (PCMMs), which provide high energy‐storage density, reversible phase change, and reduced ...
Ziyan Li +4 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work fabricated MOF‐based woven absorbing fabrics with dimensional engineering via a wet spinning strategy. The absorbing fabrics achieve a reflection loss of −51.47 dB at 2.9 mm, with an effective absorption bandwidth reaching 3.54 GHz. The absorbing fabrics can be freely bent, stretched, and folded, with individual fibers exhibiting a break ...
Zihao Yan +6 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The hydrogel exhibits versatile functions, including efficient thermogalvanic conversion under a temperature difference, and acting as a cooling layer/forming a thermally conductive nanoactive composite for thermovoltaic conversion. Additionally, its self‐healing and self‐powered flexibility play a key role in energy storage systems. The growing demand
Eunah Kang
wiley +1 more source
Alexander Polynomials of 3-Braid Knots [PDF]
, 2020 A knot is an embedding of a circle S1 into the three-dimensional sphere S3. A component link is an embedding of n disjoint circles Ⅱᵢⁿ =1 S1 into S3.
Emad Alrefai, Marwa
core +1 more source
On the character variety of periodic knots and links [PDF]
, 2000 A link L of the 3-sphere S3 is said to be g-periodic (g≥2 an integer) if there exists an orientation preserving auto-homeomorphism h of S3 such that h(L)=L, h is of order g and the set of fixed points of h is a circle disjoint from L.
HUGH M. HILDEN +5 more
core +1 more source
Fire and Materials, EarlyView.ABSTRACT Reaction‐to‐fire classification of wood‐based materials in Europe relies on SBI‐derived parameters such as FIGRA and THR600. While these parameters provide a robust and practical basis for classification, their relationship to the underlying HRR–time development remains difficult to interpret.
Steven J. Paulussen
wiley +1 more source