Results 11 to 20 of about 6,670,598 (322)
Overcoming Si3N4 film stress limitations for High Quality factor ring resonators [PDF]
Optics Express, Vol. 21, Issue 19, pp. 22829-22833 (2013), 2013 Silicon nitride (Si3N4) ring resonators are critical for a variety of photonic devices. However the intrinsically high film stress of silicon nitride has limited both the optical confinement and quality factor (Q) of ring resonators. We show that stress in Si3N4 films can be overcome by introducing mechanical trenches for isolating photonic devices ...
Dutt, Avik +3 more
arxiv +3 more sources
H-Shaped Radial Phononic Crystal for High-Quality Factor on Lamb Wave Resonators [PDF]
Sensors, 2023 In this paper, a novel H-shaped radial phononic crystal (H-RPC) structure is proposed to suppress the anchor loss of a Lamb wave resonator (LWR), which has an ultra-high frequency (UHF) and ultra-wideband gap characteristics. Compared to previous studies
Weitao He +5 more
doaj +2 more sources
Effect of Electrode Thickness on Quality Factor of Ring Electrode QCM Sensor [PDF]
Sensors, 2022 As a key type of sensor, the quartz crystal microbalance (QCM) has been widely used in many research areas. Recently, the ring electrode QCM sensor (R-QCM) with more uniform mass sensitivity has been reported.
Zhenfang Wei +3 more
doaj +2 more sources
Quality Factor Enhancement of Piezoelectric MEMS Resonator Using a Small Cross-Section Connection Phononic Crystal [PDF]
Sensors, 2022 Anchor loss is usually the most significant energy loss factor in Micro-Electro-Mechanical Systems (MEMS) resonators, which seriously hinders the application of MEMS resonators in wireless communication.
Lixia Li +5 more
doaj +2 more sources
Frontiers in Veterinary Science, 2022 This study aimed to investigate the effects of dietary supplementation of the new single-cell protein Clostridium autoethanogenum protein (CAP) on growth performance, plasma biochemical indexes, liver histology, lipid metabolism, and gut microbiota in ...
Yushan Wu +9 more
doaj +1 more source
Frontiers in Microbiology, 2023 IntroductionIt is well known that reduced nitrogen application and groundwater depth can change soil microbial communities, but the associated difference in the response of abundant and rare bacterial composition to these local environmental changes ...
Fangfang Bai +9 more
doaj +1 more source
Metagenomic insights into the antibiotic resistomes of typical Chinese dairy farm environments
Frontiers in Microbiology, 2022 Antibiotic resistance genes (ARGs) in the environment pose a threat to human and animal health. Dairy cows are important livestock in China; however, a comprehensive understanding of antibiotic resistance in their production environment has not been well
Jijun Kang +12 more
doaj +1 more source
Subchronic toxicity of oral deltamethrin in laying chickens
Frontiers in Veterinary Science, 2022 Pyrethroid pesticides, with low toxicity to birds and mammals and short persistence in the environment, are widely used now. With the development of intensive poultry farming, pesticide application leads to residues in poultry products and pollution in ...
Yiming Liu +13 more
doaj +1 more source
Distribution and Elimination of Deltamethrin Toxicity in Laying Hens
Foods, 2023 Deltamethrin, an important pyrethroid insecticide, is frequently detected in human samples. This study aims to assess the potential effects of deltamethrin on human health and investigate the patterns of residue enrichment and elimination in 112 healthy ...
Yiming Liu +9 more
doaj +1 more source
Frontiers in Plant Science, 2023 Shallow groundwater plays a vital role in physiology morphological attributes, water use, and yield production of winter wheat, but little is known of its interaction with nitrogen (N) application.
Yingjun She +9 more
doaj +1 more source