Results 61 to 70 of about 42,485 (301)

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Microwave analogy of Förster resonance energy transfer and effect of finite antenna length

Scientific Reports
The near-field interaction between quantum emitters, governed by Förster resonance energy transfer (FRET), plays a pivotal role in nanoscale energy transfer mechanisms.
Kseniia Lezhennikova, Kaizad Rustomji, Pierre Jomin, Stanislav Glybovski, C. Martijn de Sterke, Jerome Wenger, Redha Abdeddaim, Stefan Enoch   +7 more
doaj   +1 more source

Fabrication and Characterization of Flexible Spray-Coated Antennas

IEEE Access, 2018
This paper investigates the potential of using spray coating as a methodology for flexible antenna fabrication. The methodology has advantages compared with other antenna-printing techniques, such as screen-printing and gravure printing (more flexibility
Arno Thielens, Igal Deckman, Reza Aminzadeh, Ana C. Arias, Jan M. Rabaey   +4 more
doaj   +1 more source

Failures in power-combining arrays [PDF]

, 1999
We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in terms of the scattering coefficient of the failed device and reflection coefficient of an input ...
Cheng, Nai-Shuo, De Lisio, Michael P., Rutledge, David B., Weikle, Robert M., II, York, Robert A.   +4 more
core   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

Absorption Efficiency and Physical Bounds on Antennas

International Journal of Antennas and Propagation, 2010
The all spectrum absorption efficiency appears in the physical bounds on antennas expressed in the polarizability dyadics. Here, it is shown that this generalized absorption efficiency is close to 1/2 for small idealized dipole antennas and for antennas ...
Mats Gustafsson, Marius Cismasu, Sven Nordebo   +2 more
doaj   +1 more source

Efficient full-wave modeling of radiative near-field interactions in semi-anechoic conditions [PDF]

, 2015
In this paper, a full-wave method to efficiently compute the electromagnetic interaction between two devices placed in semi-anechoic conditions is proposed.
Rogier, Hendrik, Stockman, Gert-Jan, Vande Ginste, Dries   +2 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

CONSTRICTED PARTICLE SWARM OPTIMIZATION FOR DESIGN OF COLLINEAR ARRAY OF UNEQUAL LENGTH DIPOLE ANTENNAS [PDF]

ICTACT Journal on Soft Computing, 2010
A method based on constricted Particle Swarm Optimization (CPSO) algorithm to design a non-uniformly spaced collinear array of thin dipole antennas of unequal height is proposed.
Banani Basu, G. K. Mahanti
doaj