Results 31 to 40 of about 1,158,555 (111)

Active Control Approach to Temporal Acoustic Cloaking

open access: yes, 2023
We propose a realization of a transformation-based acoustic temporal cloak using an active closed-loop control approach to an equivalent electromagnetic problem.
Lasri, Or, Sirota, Lea
core  

Clean energy from dark matter? [PDF]

open access: yesarXiv, 2021
A contribution to Frank Wilczek's 70th birthday's festschrift, this brief note considers how much power can be extracted from dark matter.
arxiv  

Pickling Behaviour of 2205 Duplex Stainless Steel Hot-rolled Strips in Sulfuric Acid Electrolytes [PDF]

open access: yesarXiv, 2020
Pickling behaviour of the oxide layer on hot-rolled 2205 duplex stainless steel (DSS) was studied in H2SO4 solutions with electrolytic workstation.
arxiv  

Various Applications of Transition Metal Dichalcogenides [PDF]

open access: yesarXiv, 2021
TMDs have recently been spotlighted due to their original features. Firstly, they have layered structures with Van der Waals interactions. Secondly, they have different phases, affecting a degree of anisotropy. Finally, they have excellent carrier mobilities.
arxiv  

Water Optical Nonlinearity: Explaining Anomalously Large Electro-Optic Coefficients in Poled Silica Fibres [PDF]

open access: yesMRS Communications 2018, 2017
An explanation is offered for the large anomalous electro-optic (e.o.) effect reported by Fujiwara in 1994. It is based on the large e.o. coefficient of ordered water at an interface measured in recent years. The concept of water-based photonics is introduced, suggesting that liquid states of matter can allow ready shaping and exploitation of many ...
arxiv   +1 more source

Macroscopic and Microscopic Levels of Methylene Blue Adsorption on a Magnetic Bio-Based Adsorbent: In-Depth Study Using Experiments, Advanced Modeling, and Statistical Thermodynamic Analysis

open access: yesMagnetochemistry
A magnetic bio-based adsorbent derived from H2O2-activated zeolite and turmeric carbohydrate polymer was fabricated, characterized, and utilized in removing methylene blue (MB) dye at pH 8.0 and temperatures between 25 and 55 °C.
Wei Ding   +12 more
semanticscholar   +1 more source

Investigate a dense transparent glass doped Nd3+ ion for high power laser applications [PDF]

open access: yesarXiv, 2020
Emission and absorption cross sections of the prepared materials will be measured at different spectral regions.
arxiv  

Shaping THz emission spectra by using sub-wavelength nanopatterned spintronic THz emitters

open access: yes, 2023
We show in theory and experiment that in periodically patterned spintronic THz emitters (STE), charge dynamics can modify the emission spectrum in a well-controlled way.
Das-Mohapatra, Bikash   +4 more
core  

The Impact of Cognitive Tools on the Development of the Inquiry Skills of High School Students in Ph

open access: yes, 2013
the purpose of the study was to compare the effectiveness of two teaching strategies that utilize two different cognitive tools on the development of students’ inquiry skills in mechanics.
M. Mustafa, L. Trudel
semanticscholar   +1 more source

Stress-controlled frequency tuning and parametric amplification of the vibrations of coupled nanomembranes [PDF]

open access: yesAppl. Sci. 9, 4845 (2019), 2019
Noninvasive tuning of the mechanical resonance frequencies of suspended parallel nanomembranes in various monolithic arrays is achieved by piezoelectric control of their tensile stress. Parametric amplification of their thermal fluctuations is shown to be enhanced by the piezoelectric actuation and amplification factors of up to 20 dB in the sub ...
arxiv   +1 more source

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