Results 61 to 70 of about 584 (255)

Solvent‐Guided Chiral Assemblies and Chemical Doping of OEG‐Functionalized Conjugated Polymers

Advanced Materials, EarlyView.
Solvent‐dependent aggregation pathways dictate whether conjugated polymers form chiral lyotropic liquid‐crystalline assemblies or achiral packed aggregates. Mapping solvent‐controlled β₁ and β2 states reveals that weaker backbone association favors β₁ aggregates and reorganizable twisted mesophases, whereas stronger backbone association favors β2 ...
Sanghyun Jeon, Justin Scott Neu, Nahyun Ahn, Ayse Senlik, Yen‐Chi Chen, Pravini S. Fernando, Priyotosh Bairagya, Chetan Kumar Prasad, Janice Mihyun Baek, Wei You, Ying Diao   +10 more
wiley   +1 more source

Modeling Restrained Shrinkage Induced Cracking in Concrete Rings Using the Thick Level Set Approach

Applied Sciences, 2018
Modeling restrained shrinkage-induced damage and cracking in concrete is addressed herein. The novel Thick Level Set (TLS) damage growth and crack propagation model is used and adapted by introducing shrinkage contribution into the formulation.
Rebecca Nakhoul, Olivier Pierard
doaj   +1 more source

Reconfigurable Ferroelectric‐Like Two‐Dimensional Electron Gas at Room Temperature

Advanced Materials, EarlyView.
We demonstrate the realization of a novel ferroelectric‐like two‐dimensional electron gas (2DEG) based on the epitaxial interface between SrO‐terminate SrTiO3 and ferroeletric KNb0.5Na0.5O3${\rm KNb}_{0.5}{\rm Na}_{0.5}{\rm O}_3$ thin films. We show nonvolatile control of the transport properties enabling spatially reconfigurable devices in which ...
Martando Rath, Yu Chen, Daniela Stornaiuolo, Aravind Raji, Alexandre Gloter, Antonio Cassinese, Andrea Rubano, Alessia Sambri, Domenico Paparo, Emiliano Di Gennaro, Jérôme Lecourt, Wilfrid Prellier, Francesco Rosa, Nicholas B. Brookes, Giacomo Ghiringhelli, Daniele Preziosi, Marco Salluzzo   +16 more
wiley   +1 more source

Instability analysis of a filament-wound composite tube subjected to compression/bending

Advanced Composites Letters, 2019
The aim of this study is to investigate the global buckling of a relatively long composite cord–rubber tube subjected to axial compression and its cross-sectional instability due to bending by a macromechanical nonlinear finite element (FE) model ...
Gyula Szabó, Károly Váradi
doaj   +1 more source

Balanced Low Earth Satellite Orbits

Advances in Astronomy, 2020
The present work aims at constructing an atlas of the balanced Earth satellite orbits with respect to the secular and long periodic effects of Earth oblateness with the harmonics of the geopotential retained up to the 4th zonal harmonic.
A. Mostafa, M. H. El Dewaik
doaj   +1 more source

Resolving Nanoscale Heterogeneities in Lead Halide Perovskites Through Low‐Dose Concurrent 4D‐STEM‐EDX Mapping

Advanced Materials, EarlyView.
Mixed‐cation lead mixed‐halide perovskites suffer from structural instabilities linked to nanoscale heterogeneity. To probe this non‐destructively, a low‐dose, concurrent 4D‐STEM and EDX methodology has been developed. Examining a (FA0.83Cs0.17)Pb(I0.8Br0.2)3 film revealed a complex mosaic of coexisting crystal structures. Crucially, local deficiencies
Jinseok Ryu, Alexandra A. Sheader, Mohsen Danaie, David G. Hopkinson, Katherine E. MacArthur, Nakita K. Noel, Christopher S. Allen   +6 more
wiley   +1 more source

Impact of Earth’s Oblateness Perturbations on Geosynchronous SAR Data Focusing

Leida xuebao, 2016
In this study, we focus on the ultra-long integration of orbital perturbations of geosynchronous Synthetic Aperture Radar (SAR) for imaging. By deriving mathematical expressions for the Doppler rate and quadratic phase from orbital elements perturbated ...
Hu Wenlong
doaj   +1 more source

Maskless Fabrication of PLA‐Based Neural Arrays for CNS Recording and Stimulation

Advanced Materials Interfaces, EarlyView.
Biodegradable neural interfaces enable bidirectional communication with the CNS. Through electrochemical characterization, ageing tests with impedance monitoring, and in vivo validation, we assess the performance of PLA‐based epicortical and spinal implants.
Anna De Salvo, Federica Velluto, Ilenia Sergi, Michele Di Lauro, Verónica Barranco‐Maresca, Elena Alonso‐Calviño, Yasmina Hernández‐Martín, Juan Aguilar, Juliana M. Rosa, María C. Serrano, Carolina Giulia Ferroni, Federico Rondelli, Elisa López‐Dolado, Luciano Fadiga, Fabio Biscarini   +14 more
wiley   +1 more source

Using the Difference of the Inclinations of a Pair of Counter-Orbiting Satellites to Measure the Lense–Thirring Effect

Universe
Let two test particles A and B, revolving about a spinning primary along ideally identical orbits in opposite directions, be considered. From the general expressions of the precessions of the orbital inclination induced by the post-Newtonian ...
Lorenzo Iorio
doaj   +1 more source

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

Advanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel, Bastian Jülich, Anna Rosa Ziefuss, Florian Eibl, Stephan Barcikowski   +4 more
wiley   +1 more source