Results 81 to 90 of about 229,515 (283)

Modeling the dynamic capacitance of an LED in forward bias [PDF]

APL Electronic Devices
To design effective circuits that modulate the optical output of LEDs in communication systems, it is essential to accurately model their electrical response, particularly to small modulation signals.
Diego Vargas Romero, Jean-Paul M. G. Linnartz, Jacobus L. M. van Mechelen   +2 more
doaj   +1 more source

Barriers against Agricultural Exports from Pakistan: The Role of WTO Sanitary and Phytosanitary Agreement [PDF]

There has been growing recognition that Sanitary and Phytosanitary (SPS) agreement can impede trade in agricultural and food products. Pakistan, in particular experiences problems in meeting the SPS requirements of developed countries and, it is claimed,
Khalid Mustafa
core  

Recent Advances on Thermochromic Inks for Security Applications

Advanced Materials Technologies, EarlyView.
Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira, Andreia Araújo, Elvira Fortunato, Rodrigo Martins, Marta C. Corvo, Emanuel Carlos   +5 more
wiley   +1 more source

SPS sintering & joining based on preparation of tungsten-molybdenum composite target

Cailiao gongcheng, 2020
High energy ball milling and spark plasma sintering(SPS) were used to make high density pure W bulk, the relative density of samples can reach more than 97.0%.
HUANG Hao, ZHAO Jing-jing, HAN Cui-liu, YANG Xin-yu, PAN Ya-fei, ZHANG Jiu-xing   +5 more
doaj  

Advances in Safe, Flexible, and Stretchable Batteries for Wearable Applications

Advanced Materials Technologies, EarlyView.
Unlike previous reviews centered on component‐based deformability, this work highlights safety‐driven design strategies for flexible and stretchable batteries. By integrating material‐level engineering, geometry‐controlled structures, biocompatibility, and self‐protection mechanisms, it establishes a unified framework that connects mechanical ...
Hyewon Kang, Garan Byun, Seunghyeb Ban, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells   +8 more
wiley   +1 more source

Enhancing Microstructural Characteristics and Mechanical Properties of Ti-Al-Dy Alloy through Ball Milling and SPS Consolidation [PDF]

Archives of Metallurgy and Materials
In this study, pure Ti, Al, Dy powders were ball-milled with zirconia balls in argon atmosphere for 3 h at 800 rpm, producing a Ti- 6 wt.% Al- 4 wt.% Dy alloy powder.
Hyunseung Lee, Si Young Chang
doaj   +1 more source

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

Advanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida, Koichi Okamoto, Takuya Matsuda, Hajime Ishihara   +3 more
wiley   +1 more source

SPS sintering & joining based on preparation of tungsten-molybdenum composite target

Cailiao gongcheng, 2019
High energy ball milling and spark plasma sintering(SPS) were used to make high density pure W bulk, the relative density of samples can reach more than 97.0%.
HUANG Hao, ZHAO Jing-jing, HAN Cui-liu, YANG Xin-yu, PAN Ya-fei, ZHANG Jiu-xing   +5 more
doaj  

On–Off Switchable Micromotors for Use in Steerable Microvehicles

Advanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson, Eswaran Murugasen, Jose G. Martinez, Edwin W. H. Jager   +3 more
wiley   +1 more source