Results 61 to 70 of about 71,451 (303)

Photocatalytic Versus Stoichiometric Hydrogen Generation Using Mesoporous Silicon Catalysts: The Complex Role of Sacrificial Reagents

Advanced Functional Materials, EarlyView.
This study highlights the importance of accounting for stoichiometric hydrogen produced when utilizing Si photocatalysts. The stoichiometric contribution is sacrificial reagent dependent and decreases with increasing sterics around the catalyst surface.
Sarrah H. Putwa, Sarah A. Martell, Berthold Reis, Simona Schwarz, Mita Dasog   +4 more
wiley   +1 more source

A high-gain terahertz MIMO antenna design based on broadband near-zero refractive index metamaterials

Materials Research Express
In this research, we introduce a design of broadband zero-index metamaterials (ZIM). The proposed broadband ZIM comprises two identical layers of octagonal gold exhibiting four-fold rotational symmetry, with a dielectric layer situated in between ...
Zhanyun Lai, Fei Liu, Haochong Xu, Yuanyuan Zhang, Bingke Li, Ailing Zhang   +5 more
doaj   +1 more source

Analysis and Design of a Novel Compact Multiband Printed Monopole Antenna

International Journal of Antennas and Propagation, 2013
A compact multiband printed monopole antenna is presented. The proposed antenna, composed of a modified broadband T-shaped monopole antenna integrating some band-notch structures in the metallic patch, is excited by means of a microstrip line.
Junjun Wang, Xudong He
doaj   +1 more source

Low-Cost Broadband Circularly Polarized Array Antenna with Artificial Magnetic Conductor for Indoor Applications

Applied Sciences, 2023
In this paper, we report a sequential-phase fed broadband circularly polarized array antenna loaded with an artificial magnetic conductor-reflecting surface. Our proposed antenna is a two-part group. The upper structure is a sequential-phase fed circular
Han Hao, Shuqi Wang, Huanhuan Gao, Xia Ma, Xiaojun Huang   +4 more
doaj   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Design of a small passive UHF anti-metal label antenna

Dianzi Jishu Yingyong, 2018
This paper designs a UHF band and small passive anti-metal RFID electronic tag antenna. On the basis of one end port enclosed small micro-strip antenna, the substrate uses dielectric constant in 22 of the microwave dielectric ceramic to further decrease ...
Jing Yuwen, Cui Yinghua
doaj   +1 more source

Transparent Inorganic–Organic Bilayer Neural Electrode Array and Integration to Miniscope System for In Vivo Calcium Imaging and Electrophysiology

Advanced Functional Materials, EarlyView.
This study presents the BioCLEAR system, a highly transparent and conductive neural electrode array composed of silver nanowires (AgNWs) and doped PEDOT:PSS, enabling neural recordings with minimal optical artifacts. When integrated with a GRIN lens, this cost‐effective neural implant allows simultaneous electrophysiological recording and GCaMP6‐based ...
Dongjun Han, Kevin Cheng, Swathy Sampath Kumar, Anil Bollimunta, Elizabeth E. Torr, Juhwan Kim, Kyoungmin Kim, Hyungjun Choi, Seongkwon Hwang, Sarah Brodnick, David Cheng, Lindsay Gray, Yei Hwan Jung, William L. Murphy, Aaron J. Suminski, Jonathan J. Nassi, Justin C. Williams, Dong‐Wook Park   +17 more
wiley   +1 more source

Compact UWB-MIMO antenna with metamaterial FSS decoupling structure

EURASIP Journal on Wireless Communications and Networking, 2017
In this paper, an UWB-MIMO antenna with frequency selective surface (FSS) decoupling structure is proposed. To realize antenna system miniaturization and integration, silicon material is applied as substrate.
Xiaoming Zhu, Xiaodong Yang, Qichao Song, Baisen Lui   +3 more
doaj   +1 more source

Broadband conical microstrip antenna

Electronics Letters, 1985
Conical patch antennas, excited on TE11-mode are studied and their resonance frequencies are computed. These antennas present a broader bandwidth compared to classical microstrip antennas and, furthermore, good impedance matching can be easily obtained.
L. Jeddari, K. Mahdjoubi, C. Terret, J.P. Daniel   +3 more
openaire   +1 more source

Biomimetic Iridescent Skin: Robust Prototissues Spontaneously Assembled from Photonic Protocells

Advanced Functional Materials, EarlyView.
Uniform nanoparticles are induced to form arrays (photonic crystals) in the cores of biopolymer capsules, endowing these ‘protocells’ with structural color. These protocells are then assembled into large self‐standing objects, i.e., prototissues, with robust mechanical properties as well as iridescent optical properties.
Medha Rath, Briahnah Streeter, Satyam Srivastava, Jemma Wood, William E. Bentley, Taylor J. Woehl, Srinivasa R. Raghavan   +6 more
wiley   +1 more source