Results 131 to 140 of about 537,557 (300)

From the “broadband ditch” to the release of the 2010 US national broadband plan. A short history of the broadband penetration debate in the US [PDF]

The paper provides an historical account of the policy debate that took place in the United States after the 2007 release of the OECD's broadband statistics. It explains why and in what context such a debate occurred (lack of relevant statistics from the
Jean-Paul SIMON
core  

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

Advanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair, Hrisheekesh Thachoth Chandran, Karl Leo, Hans Kleemann   +3 more
wiley   +1 more source

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

Advanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler, Benjamin Aymoz, Sebastian Sabisch, Stefanie Frick, Sebastian Siol, Dmitry N. Dirin, Simon C. Boehme, Maksym V. Kovalenko   +7 more
wiley   +1 more source

Two‐Dimensional Reconfigurable Photodiode for In‐Sensor Color Filtering and Spectral Logic

Advanced Materials, EarlyView.
By harnessing the photodoping of different aggregates, the device exhibits wavelength‐dependent volatile‐to‐nonvolatile photoresponses that can be reconfigured via bias modulation. This enables in‐sensor color filtering and spectral‐encrypted information processing, eliminating reliance on external optical filters or post‐processing algorithms ...
Xiaokun Guo, Yaoqiang Zhou, Yufeng Zhang, Xinyi Zhao, Yue Pang, Lei Tong, Zhipei Sun, Jianbin Xu   +7 more
wiley   +1 more source

Molecular‐Level Insights into Interfacial Adsorption Mechanisms of PFOA on Functional Dolomite Surfaces via AIMD and Spectroscopy

Advanced Materials Interfaces, EarlyView.
Perfluorooctanoic acid (PFOA), ab initio molecular dynamics (AIMD), density functional theory (DFT), Dolomite (DL), metal‐organic frameworks (MOFs), calcined modified dolomite (CDL), zero‐point of charge (PZC), metal‐organic frameworks (MOFs), Fourier transform infrared (FTIR), X‐ray diffraction (XRD), scanning electron microscopy (SEM ...
Yating Yang, Yuhan Li, Zhaohui Li, Hang Wei, Yaqi Wen, Po‐Hsiang Chang, Christopher Rensing, Ahmed I. Osman, Baoyu Kong   +8 more
wiley   +1 more source

Enhancing Stability of Few‐Layer Black Phosphorus (FLBP) Through Nitrocellulose Coating: A Robust Defense Mechanism Against Degradation

Advanced Materials Interfaces, EarlyView.
In this research, a simple and scalable strategy for protection of a few‐layer black phosphorus (FLBP) with a cellulose nitrate‐based material is presented. The FLBP is structurally and morphologically characterized. The FLBP stability with and without nitrocellulose protection is monitored by interferometric method, surface profile examination, and ...
Paweł Jakóbczyk, Michał Suplewski, Jacek Łubiński, Jakub Gierowski, Monika Kosowska, Mirosław Sawczak, Mattia Pierpaoli, Filip Janiak, Małgorzata Szczerska   +8 more
wiley   +1 more source

Urban Broadband Internet Policies in Europe: A Critical Review [PDF]

In this paper, urban broadband policies are critically reviewed. Cities and regions in Europe play an increasingly active role in the provision of broadband electronic infrastructure.
Paulus Woets, Willem van Winden
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Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Open internet access to CATV networks: experiences from the EU [PDF]

Broadband over CATV networks is flourishing in the EU and in some Member States it even has already made significant impact on the retail broadband market.
Hou, Liyang, Stevens, David, Valcke, Peggy   +2 more
core  

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source