Results 91 to 100 of about 106,069 (300)

Filters at Microwaves Frequencies with Double Confocal Elliptical Ring Resonator

TecnoLógicas, 2013
This work describes the results of computational simulations and measurement of a multiband filter using double elliptical ring resonator excited by coplanar slot line waveguide for the design of microwave filters in RF communications systems.
Samuel Á. Jaramillo-Flórez
doaj  

Ferritin‐Doped Nanoparticles Triggered Tumor‐Specific Darkening for Enhanced Photothermal Tumor Ablation and Immune Activation

Advanced Healthcare Materials, EarlyView.
Ferritin‐doped hybrid nanoparticles triggered accurate tumor‐specific hemorrhage for enhanced in situ photothermal therapy and evoked anti‐tumor immunity. Notably, HFn/GA‐Fe specifically induced tumor hemorrhage 12 h after intravenous injection, resulting in visible color darkening. Through photoacoustic imaging, tumor vessels could be clearly observed
Haidong Zha, Xiao Liang, Long Xi, Jiamao Chen, Wenzhao Zhong, Zhen Yuan, Meng Xu, Ying Zheng   +7 more
wiley   +1 more source

Thermo‐Fluorescent Bactericidal Quantum Dots Based Smart Multifunctional Textiles via Molecular Surface Engineering and 3D‐Printed Interlocked Architectures

Advanced Healthcare Materials, EarlyView.
A versatile approach is presented for fabricating smart multifunctional textiles by integrating thermo‐fluorescent carbon dot/polymer nanocomposite coatings with 3D‐printed interlocked architectures. The fabrics exhibit temperature‐responsive fluorescence, durable hydrophobicity, strong antibacterial and antioxidant activity, and enhanced UV protection.
Poushali Das, Sayan Ganguly, Parham Khoshbakht Marvi, Misha Muthalali, Fatemeh Parniani, Shiza Hassan, Xiaowu (Shirley) Tang, Seshasai Srinivasan, Amin Reza Rajabzadeh   +8 more
wiley   +1 more source

Performances of Microwave Photonic Notch Filter Based on Microring Resonator With Dual-Drive Modulator

IEEE Photonics Journal, 2019
A tunable microwave photonic notch filter with ultrahigh radio frequency (RF) rejection ratio is achieved by using a dual-drive Mach–Zender modulator and a microring resonator.
Pengfei Zheng, Hong Hong, Jing Li, Guohua Hu, Binfeng Yun, Yiping Cui   +5 more
doaj   +1 more source

Microwave filtering amplifiers

, 2021
Els amplificadors filtrants de microones s'han convertit en un tema d'interès a causa de la necessitat de components capaços d'aïllar el sistema d'interferències d'altres circuits. Un exemple de subsistemes destacables en transmissors i receptors de comunicacions són els amplificadors de microones, tant de baix soroll (LNA) com de potència (PA). Durant
openaire   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Development of Microwave Filters with Tunable Frequency and Flexibility Using Carbon Nanotube Paper. [PDF]

Nanomaterials (Basel), 2023
Liu JH, Huang YS.
europepmc   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

New approach to computer aided design of coupled resonator filters

Journal of Telecommunications and Information Technology, 2003
A gradient based optimization technique along with a new definition of cost function is applied to synthesis of coupled resonators filters. The cost function is defined using location of zeros and poles of the filter`s transfer function. The topology of
Piotr Kozakowski, Michał Mrozowski
doaj   +1 more source

Design of U-Shaped Frequency Tunable Microwave Filters in MEMS Technology. [PDF]

Sensors (Basel), 2023
Giacomozzi F, Proietti E, Capoccia G, Sardi GM, Bartolucci G, Iannacci J, Tagliapietra G, Margesin B, Marcelli R.   +8 more
europepmc   +1 more source