Results 41 to 50 of about 128,951 (314)

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Experimental Evaluation of Acoustical Materials for Noise Reduction in an Induction Motor Drive

Machines
Electric propulsion motors are more efficient than internal combustion engines, but they generate high-frequency tonal noise, which can be perceived as annoying.
Ashish Kumar Sahu, Abeka Selliah, Alaa Hassan, Moien Masoumi, Berker Bilgin   +4 more
doaj   +1 more source

Side Effect of the Use of Acoustic Barriers Observed in the Infra Range

Archives of Acoustics, 2020
Acoustic barriers which are positioned along traffic lanes are designed to protect the surroundings from excessive noise. Such structures are to reverberate, diffract and damp the propagating acoustic waves.
Andrzej Czesław STANIEK, Cezary BARTMAŃSKI   +1 more
doaj   +1 more source

Influence of the Manufacturing Process of a Claw-Pole Alternator on its Stator Shape and Acoustic Noise [PDF]

, 2017
This paper shows the influence of the manufacturing process of a claw-pole alternator on its acoustic noise. First, the stator welds and the assembly of the stator in the brackets are linked to deformations of the inner diameter of the stator.
Nicolas Hagen, Stephane Clenet, Jerome Legranger, Antoine Tan-Kim, MIPO, Jean-Claude, MIPO, Jean Claude, Vincent Lanfranchi, LANFRANCHI, Vincent, TAN-KIM, Antoine, Jean-Claude Mipo, Frederic Palleschi, LEGRANGER, Jerome, Thierry Coorevits, PALLESCHI, Frédéric, CLENET, Stephane, TAN-KIN, Antoine, COOREVITS, Thierry, HAGEN, Nicolas   +17 more
core   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Vacuum Formed Spherical Triboelectric Architecture Overcoming Direction Constraints for 3D‐Omnidirectional Ultrasonic Energy Receiving

Advanced Functional Materials, EarlyView.
First vacuum formed spherical triboelectric converter for 3D‐omnidirectional ultrasonic energy receiving, with configurable DC or pulse outputs for versatile applications. ABSTRACT Ultrasound‐driven triboelectric nanogenerators (UD‐TENGs) have emerged as promising ultrasonic energy converters for underwater and biomedical applications.
Yanqin Huang, Mengjie Qin, Zixuan He, Xu Yang, Wenjie Chen, Siya Zhou, Qiyuan Zhang, Zhangwei Wang, Yicheng Wang, Yonghong Cheng, Daniel M. Mulvihill, Sandy Cochran, Qingshen Jing   +12 more
wiley   +1 more source

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

Advanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera, Chiranjeevi Kanike, Appurva Tiwari, Hongyan Wu, Larry D. Unsworth, Ben Bin Xu, Xuehua Zhang   +6 more
wiley   +1 more source

Busy Urban Soundscape Underwater: Acoustic Indicators vs. Hydrophone Data

Urban Science
Urban noise pollution extends into aquatic environments, influencing underwater ecosystems. This study examines the effectiveness of acoustic indicators in characterizing urban underwater soundscapes using hydrophone recordings.
Kamil Monastyrski, Grzegorz Chrobak, Rengin Aslanoğlu, Jacob Wilkerson, Jan K. Kazak   +4 more
doaj   +1 more source

Methodological challenges and solutions in auditory functional magnetic resonance imaging

Frontiers in Neuroscience, 2014
Functional magnetic resonance imaging (fMRI) studies involve substantial acoustic noise. This review covers the difficulties posed by such noise for auditory neuroscience, as well as a number of possible solutions that have emerged.
Jonathan E Peelle
doaj   +1 more source

Acoustic Performance Prediction of Undersea Vehicles

水下无人系统学报, 2023
With the development of deep-sea fishing and marine ranching, the impact of undersea radiation noise of vehicles on marine organisms such as fish cannot be ignored .
Xiaohan FU, Xuezhi FU, Minqing WANG
doaj   +1 more source