Results 81 to 90 of about 134,685 (302)

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Dual-band WLAN Antenna Array with Integrated Bandpass Filters for Harmonic Suppression [PDF]

, 2015
This paper presents the design and results of a dual-band antenna array integrated with bandpass filters. The array has a 1×2 configuration. The two bands of the array correspond to the two WLAN bands of 2.4 GHz and 5.8 GHz. Other than the two main bands,
Budimir, D., Djuradj Budimir, Waqas Ahmad, Ahmad, W.   +3 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Downtilt Optimization of Array Antennas Based on Envelope Radiation Patterns for HAPS Service Links With Massive MIMO

IEEE Access
High-altitude platform stations (HAPSs) are gaining traction as a promising technology for significantly expanding coverage to aerial, maritime, and mountainous areas in 6G communication. Service links with a single HAPS are expected to provide extensive
Koichi Maki, Koji Tashiro, Tsutomu Ishikawa, Kenji Hoshino   +3 more
doaj   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Comparative analysis of UWB balance Antipodal Vivaldi Antenna for array configuration [PDF]

, 2018
In this paper, an Ultra-wideband Balance Antipodal Vivaldi Antenna in planar and h-plane array configuration is presented. The comparison of four elements of BAVA array in both planes has been observed. Each element of an antenna printed on the glass-
Baillargeat, Dominique, Jawad Shah, Zeeshan Shahid, Alam, A. H. M. Zahirul, Mashkuri Bin Yaacob, Shah, Jawad Ali, Shahid, Zeeshan, Yaacob, Mashkuri, AHM Zahirul Alam, Sheroz Khan, Habaebi, Mohamed Hadi, Shaikh, Faraz Ahmed, Mohamed Hadi Habaebi, Khan, Sheroz, Dominique Baillargeat, Faraz Ahmed Shaikh   +15 more
core   +1 more source

Novel coprime MIMO configurations for DOA estimation with increased degrees of freedom

Franklin Open
In this work, we propose some coprime multiple input multiple output (MIMO) configurations for direction-of-arrival (DOA) estimation, which achieve more degrees of freedom (DOF) than all the existing coprime MIMO configurations. We know that in a coprime
Rajen Kumar Patra, Anindya Sundar Dhar
doaj   +1 more source

Maximum Power of Thermally and Electrically Coupled Thermoelectric Generators

Entropy, 2014
In a recent work, we have reported a study on the figure of merit of a thermoelectric system composed by thermoelectric generators connected electrically and thermally in different configurations.
Pablo Camacho-Medina, Miguel Angel Olivares-Robles, Alexander Vargas-Almeida, Francisco Solorio-Ordaz   +3 more
doaj   +1 more source

Spiral antenna array configurations on spherical surface

ICECom 2013, 2013
Array antennas on the spherical surface offer a wide range of opportunities in the variation of their radiation patterns through antennas distribution and phase control. Elementary antennas could be distributed on the spherical surfaces in many different ways and in this paper one of them is chosen – spiral configuration with three subtypes ...
Mandrić, Vanja, Rupčić, Slavko
openaire   +2 more sources

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source