Results 31 to 40 of about 1,288,747 (259)

Detecting Criticality by Exploring the Acoustic Activity in Terms of the “Natural-Time” Concept

Applied Sciences, 2021
The acoustic activity developed in marble specimens under various loading schemes is explored in terms of the recently introduced F-function. The novelty of the study is that instead of describing the temporal evolution of the F-function in terms of ...
Andronikos Loukidis, Dimos Triantis, Ilias Stavrakas, Ermioni D. Pasiou, Stavros K. Kourkoulis   +4 more
doaj   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

Advanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao, Ilayda Namli, Joseph Christakiran Moses, Youdi Liu, Suihong Liu, Syed Hasan Askari Rizvi, Yasar Ozer Yilmaz, Ibrahim T. Ozbolat   +7 more
wiley   +1 more source

Acoustic Emission Characteristics of Galling Behavior from Dry Scratch Tests at Slow Sliding Speed

Acoustics
Galling wear, a severe form of wear, is a known problem in sheet metal forming. As the wear state is not directly observable in closed tribosystems, such as in industrial sheet metal forming processes, indirect tool wear monitoring techniques for ...
Timothy M. Devenport, Ping Lu, Bernard F. Rolfe, Michael P. Pereira, James M. Griffin   +4 more
doaj   +1 more source

Deformation processes and emissions of acoustic impulses at the uniaxial loading of selected rocks from the Czech part of the Upper Silesian Basin [PDF]

Acta Montanistica Slovaca, 1998
The deformation and induced acoustic emission during uniaxial loading were studied. Three main phases were distinguished during the whole deformation process: the initial one, in which the adjustment of rock specimen to the loading frame occurred, the ...
Konečný Petr
doaj  

Experimental Study of Damage Development in Salt Rock under Uniaxial Stress Using Ultrasonic Velocity and Acoustic Emissions

Applied Sciences, 2018
Ultrasonic waves and acoustic emissions (AE) are important technologies to reveal rock damage. However, few studies have simultaneously monitored both types of data in the same experiment because of limitations on the experimental apparatus.
Haoran Li, Zhikai Dong, Yun Yang, Bo Liu, Mingyi Chen, Wenjun Jing   +5 more
doaj   +1 more source

Selenium‐Integrated Cyanine Dye With Enhanced Photophysical Properties for Optoacoustic‐Guided Cancer Imaging and Therapy

Advanced Functional Materials, EarlyView.
This study introduces selenium‐integrated cyanine dye (Se‐Cyn), with superior photostability, absorption, and photothermal efficiency, outperforming ICG in NIR window. Its nanoparticle form remains stable in water, accumulates in tumors, and enables strong optoacoustic imaging and effective phototherapy outcomes.
Divyesh Shelar, Snehal Salunkhe, Tony Fröhlich, Uwe Klemm, Pia Anzenhofer, Birgit Rathkolb, Martin Hrabě de Angelis, Oliver Plettenburg, Michael Sattler, Sudesh T. Manjare, Vipul Gujrati, Vasilis Ntziachristos   +11 more
wiley   +1 more source

Influence of EGR and Acoustic Waves on Particles and Other Emissions of IC Engine Powered with Diesel and RME Fuels

Fuels
To achieve the goal of climate neutrality set by the European Union, it is important to find an efficient strategy to simultaneously lower nitrogen oxide, carbon monoxide, and particle emissions.
Sai Manoj Rayapureddy, Jonas Matijošius
doaj   +1 more source

Material Coupling in Hybrid Neuromorphic Devices: From Fundamentals to System‐Level Applications

Advanced Functional Materials, EarlyView.
Hybrid neuromorphic devices utilize heterointerfaces between emerging semiconductors, where charge transfer and trapping, ion or defect modulation, and photogating are translated into synaptic functions. This paper discusses coupling strategies that tailor interfacial electronic and ionic properties in organic semiconductors, metal oxides, two ...
Minsu So, Sunwoo Jeong, Youngmin Han, Fabrizio Torricelli, Hocheon Yoo, Junhwan Choi   +5 more
wiley   +1 more source

Determination of Fracture Initiation Locations during Cross-Measure Drilling for Hydraulic Fracturing of Coal Seams

Energies, 2016
When drilling coal-bearing sequences to enhance coal seam permeability by hydraulic fracturing (HF), the location where fractures are initiated is important. To date, most research on fracture initiation has studied the problem in two dimensions. In this
Yiyu Lu, Yugang Cheng, Zhaolong Ge, Liang Cheng, Shaojie Zuo, Jianyu Zhong   +5 more
doaj   +1 more source

Correlation of Acoustic Emissions with Electrical Signals in the Vicinity of Fracture in Cement Mortars Subjected to Uniaxial Compressive Loading

Applied Sciences, 2022
Acoustic emissions (AEs) and weak electrical signals, also known as pressure stimulated currents (PSCs), were concurrently recorded in order to investigate their behavior and detect precursory indicators when cement mortar specimens were subjected to ...
Andronikos Loukidis, Dimitrios Tzagkarakis, Antonios Kyriazopoulos, Ilias Stavrakas, Dimos Triantis   +4 more
doaj   +1 more source