Results 121 to 130 of about 175,119 (310)
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells +3 more
wiley +1 more source
Electro‐Steric Ion Confinement in Polyelectrolyte Networks for Robust Nonvolatile Artificial Synapse
Polyelectrolyte stoichiometry governs ion transport and retention in electrolyte‐gated synaptic transistors. A PSS‐rich network creates electro‐steric ion confinement that suppresses ion back‐diffusion and stabilizes channel doping, enabling robust nonvolatile synaptic memory, linear weight updates, and low‐energy operation.
Donghwa Lee +9 more
wiley +1 more source
This work developed a smart Janus wood membrane integrating asymmetric wettability with built‐in electrical sensing for oil‐water separation. The membrane achieved > 99.5% separation efficiency and high flux by leveraging wood's natural anisotropic pore structure.
Kaiwen Chen +10 more
wiley +1 more source
Russo-Ukrainian War’s Impact on Space Security – The Western Perspective
In this paper, the impact of the democratisation of space on space security is investigated using the example of the war in Ukraine, with particular attention to the transatlantic community’s security concerns.
Marek Czajkowski
doaj +1 more source
Janus Photonic Graphics by Stratified Assembly of Two Distinct Colloids
Double‐sided Janus photonic micropatterns with vivid structural colors are fabricated through a single‐step bottom‐up strategy. Density‐driven stratification and depletion‐mediated crystallization of PMMA and PS binary colloids lead to exclusive lattices on opposite surfaces under centrifugal force.
Young Geon Kim +4 more
wiley +1 more source
Develop a LiCl–PEI–PAM hydrogel with 3000% stretchability and excellent optical transparency. Through comparative studies of various salts, confirm that LiCl is the most suitable salt for high TENG output. Achieve excellent freeze‐resistant, dry‐resistant, and rapid self‐healing (10 s) properties even in extreme environments. Balance ionic conductivity,
Hai Anh Thi Le +6 more
wiley +1 more source
Space Security, Balance of Power, and Deterrence Theory
The article examines the transformation of the deterrence concept amidst the development of outer space as a new strategic environment for confrontation. Based on Thomas Schelling’s game theory, the author analyzes the changing nature of global conflicts
Larysa Soroka, Anna Hurova
doaj +1 more source
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon +10 more
wiley +1 more source
The perils of periodising astropolitics: Space security and the system builders
Space systems are becoming an ever more important part of international security capabilities and practices. However, problematic interpretations of the Space Age are taking root in practitioner and academic circles along the contours of three sequential
Bleddyn E. Bowen
doaj +1 more source
Impacts of space system acquisition on national security [PDF]
This thesis examines a series of problems that the United States has encountered in its space systems acquisition process, and how these problems have impacted national security.
Harris, Jr., Andrew W.
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