Results 51 to 60 of about 18,925 (253)

The Dynamic Performance of Flexural Ultrasonic Transducers

Sensors, 2018
Flexural ultrasonic transducers are principally used as proximity sensors and for industrial metrology. Their operation relies on a piezoelectric ceramic to generate a flexing of a metallic membrane, which delivers the ultrasound signal.
Andrew Feeney, Lei Kang, George Rowlands, Steve Dixon   +3 more
doaj   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

Mechanoluminescent HOF Nanotransducers Enabled Sono‐Optogenetics in Parkinsonian Rats

Advanced Functional Materials, EarlyView.
We present a mechanoluminescent system utilizing porous hydrogen‐bonded organic frameworks (HOFs) as a toolkit for focused ultrasound‐triggered, non‐invasive light delivery to the deep brain in rats. This approach enables the specific activation of PV‐GPe neurons in dopamine‐depleted Parkinson's disease rat models, resulting in a comparable alleviation
Wenliang Wang, Ilya Pyatnitskiy, Yanshu Shi, Kai Wing Kevin Tang, Yi Xie, Sihan Yu, Thomas Wynn, Xiangping Liu, Ju‐Chun Hsieh, Jinmo Jeong, Weilong He, Brinkley Artman, Anakaren Romero Lozano, Xi Shi, Arjun Sangani, Lief E Fenno, Samantha Santacruz, Banglin Chen, Huiliang Wang   +18 more
wiley   +1 more source

Anisotropic Materials Characterization Using Air-Coupled Ultrasound

, 1997
Ultrasonic materials characterization is widely used to assess both properties and defects of structural components. Recently, the option of gas- or air-coupled ultrasonic testing has become a realistic possibility. In this paper we develop the application of resonant sound transmission methods through ambient air in anisotropic materials with the ...
Lobkis, O., Chimenti, Dale
openaire   +3 more sources

Relating the ultrasonic and aerosol filtration properties of filters

Scientific Reports
Non-contact methods are useful to improve the quality control of particle filtration media. The purpose of this paper is to investigate the correlation between the filtration efficiency of a porous sheet and its ultrasonic properties obtained using a non-
Tomás E. G. Alvarez-Arenas, Timothy A. Sipkens, Joel C. Corbin, Patricia Salso, Vicente Genovés   +4 more
doaj   +1 more source

Air-Coupled, Contact, and Immersion Ultrasonic Non-Destructive Testing: Comparison for Bonding Quality Evaluation

Applied Sciences, 2020
The objective of this study is to compare the performance of different ultrasonic non-destructive testing (NDT) techniques for bonding quality evaluation.
Bengisu Yilmaz, Aadhik Asokkumar, Elena Jasiūnienė, Rymantas Jonas Kažys   +3 more
doaj   +1 more source

A Skin‐Like Strain Sensor for Real‐Time Human Motion Detection

Advanced Functional Materials, EarlyView.
A skin‐like strain sensor with exceptional flexibility and breathability enables real‐time human motion detection. It offers continuous ECG monitoring and gesture recognition, ensuring high durability and comfort. This innovative design is ideal for wearable applications, combining reliable performance with seamless integration into dynamic ...
Shiqi Song, Zhe Li, Jingya Guo, Shuo Shi, Jian Fang, Xungai Wang   +5 more
wiley   +1 more source

Optoacoustic imaging with an air-coupled transducer using coaxially aligned focused illumination

AIP Advances, 2022
Optoacoustic (OA) methods have become powerful tools in biomedical research capable of retrieving functional information from biological tissues in vivo. Acquisition of OA signals generally relies on direct physical contact of a transducer or an acoustic
Cagla Özsoy, Jianuo Xu, Jiao Li, Francisco Montero de Espinosa, Daniel Razansky, Xosé Luís Deán-Ben   +5 more
doaj   +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

Improved Autogenous Healing of Concrete with Superabsorbent Polymers Evaluated Through Coupled and Air-Coupled Ultrasound

Buildings
Superabsorbent polymers have been introduced into cementitious materials to solve issues related to early-age cracking, caused by shrinkage, and manual repair.
Gerlinde Lefever
doaj   +1 more source