scholarly journals Utilization of the microwave electric or magnetic field in the synthesis of monometallic and bimetallic nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14637-14645 ◽  
Author(s):  
Takuya Sumi ◽  
Ralf Dillert ◽  
Satoshi Horikoshi
Keyword(s):  
Magnetic Field ◽  
Microwave Irradiation ◽  
Bimetallic Nanoparticles ◽  
Single Mode ◽  
Microwave Resonator ◽  
Lower Temperature

On preparation of bimetal nanoparticles by using a single-mode microwave resonator, Ag–Ni and Pd–Ag nanocomposites were synthesized under microwave irradiation at 80 centigrade, which was a lower temperature than that for reduction of Ag ion.

Demulsification of water-in-crude oil emulsions using single mode and multimode microwave irradiation

2017 ◽  
Vol 189 ◽  
pp. 347-356 ◽  
Author(s):  
Denisson Santos ◽  
Eloá C.L. da Rocha ◽  
Robson L.M. Santos ◽  
Aarón J. Cancelas ◽  
Elton Franceschi ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Crude Oil ◽  
Single Mode ◽  
Oil Emulsions

Magnetic Field Sensing Based on Magnetic-fluid-clad No-core Single-mode No-core Fiber Structure

2015 ◽  
Vol 44 (12) ◽  
pp. 1206002
Author(s):  
PU Sheng-li ◽  
TANG Jia-li ◽  
LIU Zhi-heng ◽  
LUO Long-feng
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Single Mode ◽  
Fiber Structure ◽  
Core Fiber ◽  
Field Sensing ◽  
Magnetic Field Sensing

scholarly journals Large-scale dynamo action of magnetized Taylor–Couette flows

2020 ◽  
Vol 493 (1) ◽  
pp. 1249-1260
Author(s):  
G Rüdiger ◽  
M Schultz
Keyword(s):  
Magnetic Field ◽  
Large Scale ◽  
Mean Field ◽  
Single Mode ◽  
Eddy Diffusivity ◽  
Magnetic Reynolds Number ◽  
Dynamo Model ◽  
Turbulence Energy ◽  
Dynamo Action ◽  
Taylor Couette

ABSTRACT A conducting Taylor–Couette flow with quasi-Keplerian rotation law containing a toroidal magnetic field serves as a mean-field dynamo model of the Tayler–Spruit type. The flows are unstable against non-axisymmetric perturbations which form electromotive forces defining α effect and eddy diffusivity. If both degenerated modes with m = ±1 are excited with the same power then the global α effect vanishes and a dynamo cannot work. It is shown, however, that the Tayler instability produces finite α effects if only an isolated mode is considered but this intrinsic helicity of the single-mode is too low for an α2 dynamo. Moreover, an αΩ dynamo model with quasi-Keplerian rotation requires a minimum magnetic Reynolds number of rotation of Rm ≃ 2000 to work. Whether it really works depends on assumptions about the turbulence energy. For a steeper-than-quadratic dependence of the turbulence intensity on the magnetic field, however, dynamos are only excited if the resulting magnetic eddy diffusivity approximates its microscopic value, ηT ≃ η. By basically lower or larger eddy diffusivities the dynamo instability is suppressed.

scholarly journals A Faraday Anomalous Dispersion Optical Filter Based on Rubidium Hollow-Cathode Lamp

2020 ◽  
Vol 10 (20) ◽  
pp. 7075
Author(s):  
Liang Shen ◽  
Rui Ma ◽  
Longfei Yin ◽  
Bin Luo ◽  
Duo Pan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hollow Cathode ◽  
Room Temperature ◽  
Saturated Vapor ◽  
Optical Filter ◽  
Optical Filters ◽  
Anomalous Dispersion ◽  
Narrow Linewidth ◽  
Hollow Cathode Lamp ◽  
Lower Temperature

Using a hollow-cathode lamp (HCL) to build a Faraday anomalous dispersion optical filter (FADOF) is a new method to realize narrow linewidth optical filters. In contrast to other atomic optical filters based on saturated vapors, which work at a relatively high temperature to maintain the atomic density, the HCL device using sputtered particles can work at a much lower temperature. In this work, a rubidium HCL-based FADOF (HCL-FADOF) working at 780 nm is established and carefully tested. With 20 mm cathode length, the transmittance can reach 29% under 18 mA discharge current and 260 G magnetic field at room temperature, which is equivalent to the performance of a saturated vapor-based FADOF (VC-FADOF) at more than 60 ∘C. This work provides a direct comparison of the performance of the HCL-FADOF and the VC-FADOF, which is of great benefit to further studies of atomic filters at normal temperature.

Coupling Effect of a Single-Mode Fiber Coil Under Time-Varying Temperature and Magnetic Field

2019 ◽  
Vol 37 (13) ◽  
pp. 3208-3213
Author(s):  
Cui Liang ◽  
Dengwei Zhang ◽  
Yilan Zhou ◽  
Xiaowu Shu ◽  
Shuangliang Che ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Coupling Effect ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Time Varying ◽  
Fiber Coil

Thermal geometric discords in a two-qutrit system

2016 ◽  
Vol 14 (03) ◽  
pp. 1650016 ◽  
Author(s):  
Ya-Li Yuan ◽  
Xi-Wen Hou
Keyword(s):  
Magnetic Field ◽  
Quantum Information ◽  
Magnetic Fields ◽  
Weak Magnetic Field ◽  
Quantum Discord ◽  
Quantum Information Processing ◽  
Thermal State ◽  
Quantum Correlations ◽  
High Dimensional ◽  
Lower Temperature

The investigation of quantum discord has mostly focused on two-qubit systems due to the complicated minimization involved in quantum discord for high-dimensional states. In this work, three geometric discords are studied for the thermal state in a two-qutrit system with various couplings, external magnetic fields, and temperatures as well, where the entanglement measured in terms of the generalized negativity is calculated for reference. It is shown that three geometric discords are more robust against temperature and magnetic field than the entanglement negativity. However, all four quantities exhibit a similar behavior at lower temperature and weak magnetic field. Remarkably, three geometric discords at finite temperature reveal the phenomenon of double sudden changes at different magnetic fields while the negativity does not. Moreover, the hierarchy among three discords is discussed. Those adjustable discords with the varied coupling, temperature, and magnetic field are useful for the understanding of quantum correlations in high-dimensional states and quantum information processing.

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