Results 71 to 80 of about 30,437 (345)

Formation of Stable Amorphous Calcium Phosphate and Collagen Assemblies by a Versatile Spray‐Drying Approach

Advanced Functional Materials, EarlyView.
Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani, Nessma Bennaceur, Celina Benkhellat, Tristan Georges, Clara Doisneau, Vaskar Sardhalia, Thierry Azaïs, Flora Lemaire, Halima Kerdjoudj, Mohamed Selmane, Capucine Sassoye, Marie Albéric, Cédric Boissière, Nadine Nassif   +13 more
wiley   +1 more source

Compact RFID tag antenna based on square spiral resonator

物联网学报
A miniaturized ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna was designed.The antenna was composed of two square spiral resonators shorted inside and outside.By adjusting the edge length of the outer ring spiral resonator ...
Libin DAI, Zhimeng XU, Jiade YUAN
doaj   +2 more sources

Multiband circularly polarised CubeSat antenna operating in S, C, X, Ku, K, and Ka bands

IET Microwaves, Antennas & Propagation
A novel design of a high‐frequency multiband with a circular polarisation antenna based on a four‐patch antenna system consolidated with an Archimedean spiral antenna for CubeSat applications.
Hesham M. Elkady, Haythem H. Abdullah, Saad M. Darwish   +2 more
doaj   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Vertical Meandering Approach for Antenna Size Reduction

International Journal of Antennas and Propagation, 2012
A novel vertical meandering technique to reduce the lateral size of a planar printed antenna is presented. It is implemented by dividing a conventional spiral patch into a different number of segments and placing them on different sides of the microwave ...
Li Deng, Shu-Fang Li, Ka-Leung Lau, Quan Xue   +3 more
doaj   +1 more source

Development of an out-of-Focus Irradiator Based on a Phased Antenna Array for a Space Communications' Parabolic Reflector Antenna

Приборы и методы измерений, 2019
Mirror antenna systems are widely used in satellite and space communication systems and radio astronomy. Development of these areas requires new efficient antenna systems' design. Possible technical solution for creating an effective mirror antenna is a “
D. V. Douksha, S. V. Liashkevich, V. A. Saetchnikov   +2 more
doaj   +1 more source

Seebeck Nanoantennas for Infrared Detection and Energy Harvesting Applications [PDF]

, 2014
In this letter we introduce a new type of infrared sensor, based on thermocouple nanoantennas, which enables the energy detection and gathering in the mid-infrared region.
Alda, Javier, Briones, Edgar, Briones, Joel, Cuadrado, Alexander, González, Javier, Hehn, Michel, Martinez-Anton, J. C., McMurtry, Stefan, Montaigne, François   +8 more
core   +2 more sources

A Compact Tri-band Printed Antenna for MIMO Applications [PDF]

, 2015
In this paper, a compact tri-band printed multi-input multi-output (MIMO) antenna with high isolation is presented to operate within WLAN and WiMAX frequency bands.
Wang, Xuetian, Zang, Jiawei
core   +2 more sources

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

A Rectangular Planar Spiral Antenna for GIS Partial Discharge Detection

International Journal of Antennas and Propagation, 2014
A rectangular planar spiral antenna sensor was designed for detecting the partial discharge in gas insulation substations (GIS). It can expediently receive electromagnetic waves leaked from basin-type insulators and can effectively suppress low frequency
Xiaoxing Zhang, Yefei Han, Wei Li, Xuetao Duan   +3 more
doaj   +1 more source