scholarly journals Enhancement of magnetic detection by ensemble NV color center based on magnetic flux concentration effect

2021 ◽  
Vol 70 (14) ◽  
pp. 147601-147601
Author(s):  
Li Zhong-Hao ◽  
◽  
Wang Tian-Yu ◽  
Guo Qi ◽  
Guo Hao ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Color Center ◽  
Concentration Effect ◽  
Flux Concentration ◽  
Magnetic Detection ◽  
Nv Color Center

A New Method to Increase the Magnetoelectric Voltage Coefficients of Metglas/PVDF Laminate Composites

2009 ◽  
Vol 1199 ◽  
Author(s):  
Zhao Fang ◽  
David Sheng-Guo Lu ◽  
Ninad Mokhariwale ◽  
Mario Remond El Tahchi ◽  
Qiming Zhang
Keyword(s):  
Magnetic Field ◽  
Aspect Ratio ◽  
Magnetic Flux ◽  
Polyvinylidene Fluoride ◽  
Effective Means ◽  
Concentration Effect ◽  
Magnetic Flux Density ◽  
Laminar Composites ◽  
Voltage Coefficient ◽  
Flux Concentration

AbstractThe magnetic flux density inside a Metglas sheet is much higher than that of the applied external magnetic field due to its high magnetic permeability, which is known as the magnetic flux concentration effect. Magnetic flux concentration of Metglas as a function of its sheet aspect ratio (width/length) was investigated for Metglas/Polyvinylidene fluoride (PVDF) laminar composites. Both the simulations and experimental results suggest that the magnetic flux concentration effect is markedly enhanced when the aspect ratio of a Metglas sheet is reduced. Consequently the magnetostriction of Metglas and the magnetoelectric (ME) voltage coefficients of the laminar composites are enhanced. The ME voltage coefficient for a laminar composite with a 1 mm wide and 30 mm long Metglas sheet (25 μm thick) is 21.46 V/cm•Oe, which is much higher than those reported earlier in similar laminar composites without making use of the flux concentration effect. The results demonstrate an effective means to significantly enhance the sensitivity of the magnetostrictive/piezoelectric composites as weak magnetic field sensors.

Magnetic Filed Analysis of Magnetic Flux Concentration Type Hybrid Surface Magnet Motor

2010 ◽  
Vol 130 (7) ◽  
pp. 698-703 ◽  
Author(s):  
Keisuke Eguchi ◽  
Shingo Zeze ◽  
Takashi Todaka ◽  
Masato Enokizono
Keyword(s):  
Magnetic Flux ◽  
Flux Concentration ◽  
Magnetic Filed

Magnetic flux concentration at micrometer scale

2013 ◽  
Vol 111 ◽  
pp. 77-81 ◽  
Author(s):  
Xu Sun ◽  
Lijun Jiang ◽  
Philip W.T. Pong
Keyword(s):  
Magnetic Flux ◽  
Flux Concentration ◽  
Micrometer Scale

Significant power enhancement of magneto-mechano-electric generators by magnetic flux concentration

2020 ◽  
Vol 13 (11) ◽  
pp. 4238-4248 ◽  
Author(s):  
Hyunseok Song ◽  
Deepak Rajaram Patil ◽  
Woon-Ha Yoon ◽  
Kwang-Ho Kim ◽  
Cheol Choi ◽  
...  
Keyword(s):  
Sensor Networks ◽  
Internet Of Things ◽  
Magnetic Flux ◽  
Magnetic Noise ◽  
Significant Power ◽  
Power Enhancement ◽  
Flux Concentration ◽  
Electric Generators ◽  
Flux Concentrator

A magneto-mechano-electric (MME) generator comprising a magnetoelectric (ME) composite and magnetic flux concentrator (MFC) can effectively harvest the tiny magnetic noise to power the autonomous internet of things (IoT) sensor networks.

scholarly journals Piezomagnetic strain-dependent non-linear magnetoelectric response enhancement by flux concentration effect

2013 ◽  
Vol 102 (17) ◽  
pp. 172904 ◽  
Author(s):  
Ying Shen ◽  
Junqi Gao ◽  
Yaojin Wang ◽  
Peter Finkel ◽  
Jiefang Li ◽  
...  
Keyword(s):  
Concentration Effect ◽  
Non Linear ◽  
Response Enhancement ◽  
Flux Concentration ◽  
Magnetoelectric Response ◽  
Strain Dependent

scholarly journals Asymmetrical eddy currents and concentration effect of magnetic flux in a high-speed rotation disc

1985 ◽  
Vol 21 (5) ◽  
pp. 1747-1749 ◽  
Author(s):  
K. Bessho ◽  
T. Morisue ◽  
S. Yamada ◽  
N. Sakai ◽  
H. Nishino
Keyword(s):  
Magnetic Flux ◽  
High Speed ◽  
Eddy Currents ◽  
Concentration Effect ◽  
High Speed Rotation ◽  
Speed Rotation

scholarly journals A Diamond Temperature Sensor Based on the Energy Level Shift of Nitrogen-Vacancy Color Centers

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1576 ◽  
Author(s):  
Mingyang Yang ◽  
Qilong Yuan ◽  
Jingyao Gao ◽  
Shengcheng Shu ◽  
Feiyue Chen ◽  
...  
Keyword(s):  
Energy Level ◽  
Temperature Measurement ◽  
Color Center ◽  
Environmental Temperature ◽  
Nitrogen Vacancy ◽  
Color Centers ◽  
Zero Phonon Line ◽  
Level Shifts ◽  
Nv Color Center ◽  
Nv Centers

The nitrogen-vacancy (NV) color center in chemical vapor deposition (CVD) diamond has been widely investigated in quantum information and quantum biosensors due to its excellent photon emission stability and long spin coherence time. However, the temperature dependence of the energy level of NV color centers in diamond is different from other semiconductors with the same diamond cubic structure for the high Debye temperature and very small thermal expansion coefficient of diamond. In this work, a diamond sensor for temperature measurement with high precision was fabricated based on the investigation of the energy level shifts of NV centers by Raman and photoluminescence (PL) spectra. The results show that the intensity and linewidth of the zero-phonon line of NV centers highly depend on the environmental temperature, and the energy level shifts of NV centers in diamond follow the modified Varshni model very well, a model which is better than the traditional version. Accordingly, the NV color center shows the ability in temperature measurement with a high accuracy of up to 98%. The high dependence of NV centers on environmental temperature shows the possibility of temperature monitoring of NV center-based quantum sensors in biosystems.

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