Results 41 to 50 of about 14,861 (353)

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

3D-Printed Low-Profile Single-Substrate Multi-Metal Layer Antennas and Array With Bandwidth Enhancement

IEEE Access, 2020
This paper presents a few single-substrate multi-metal layer antennas using additively manufactured electronics (AME) solution based on piezoelectric additive fabrication. By vertically stacking metal layers in a 3D printed single substrate, the designed
Mengze Li, Yang Yang, Francesca Iacopi, Jaim Nulman, Shlomit Chappel-Ram   +4 more
doaj   +1 more source

Compact wideband patch antenna for 5 and 6 GHz WLAN applications [PDF]

, 2008
Copyright @ 2008 IEICEA wideband rectangular and circular mistostrip patch antenna for 5 and 6 GHz WLAN applications is presented. The rectangular and the circular patches are fed by microstrip line.
AbuTarboush, HF, Al-Raweshidy, H, Nilavalan, R   +2 more
core  

Foldable all-textile cavity-backed slot antennas for personal UWB localization [PDF]

, 2020
An all-textile multimoded cavity-backed slot antenna has been designed and fabricated for body-worn impulse radio ultra-wideband (IR-UWB) operation in the 3,744-4,742.4 MHz frequency band, thereby covering Channels 2 and 3 of the IEEE 802.15.4a standard.
Lemey, Sam, Rogier, Hendrik, Van Baelen, Dries, Van den Brande, Quinten, Verhaevert, Jo   +4 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Ultra-Wideband Antennas for Wireless Communication Applications

International Journal of Antennas and Propagation, 2019
A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented.
Tale Saeidi, Idris Ismail, Wong Peng Wen, Adam R. H. Alhawari, Ahmad Mohammadi   +4 more
doaj   +1 more source

A new printed fractal right angled isosceles triangular monopole antenna for ultra-wideband applications

Egyptian Informatics Journal, 2017
In this present work, a different right angled isosceles triangular Microstrip patch antenna (RITMA) for ultra wideband (UWB) utilization is designed. The antenna presented is simple and small in structure.
Manisha Gupta, Vinita Mathur
doaj   +1 more source

A Wideband Metal-Only Patch Antenna for CubeSat [PDF]

Electronics, 2020
This article presents a compact wideband high gain patch antenna for CubeSat. The proposed metal-only antenna mainly consists of an upper patch, a folded ramp-shaped patch and shoring pins connecting the antenna with the ground plane. By adjusting the lengths and widths of two arms of the upper F-shaped patch, a second resonant frequency is generated ...
Suhila Abulgasem, Faisel Tubbal, Raad Raad, Panagiotis Ioannis Theoharis, Sining Liu, Muhammad Usman Ali Khan   +5 more
openaire   +1 more source

Experimental study of on-body radio channel performance of a compact ultra wideband antenna [PDF]

, 2015
In this paper, on-body radio channel performance of a compact ultra wideband (UWB) antenna is investigated for body-centric wireless communications.
Abbasi, Qammer H., Ashique, Ratil Hasnat, Khan, Mohammad Monirujjaman, Rahman, Mirazur   +3 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source