Advances in anti-relaxation coatings of alkali-metal vapor cells

Chi, Haotian; Quan, Wei; Zhang, Junying; Zhao, Lei; Fang, Jiancheng

doi:10.1016/j.apsusc.2019.143897

Cited by 28 publications

(12 citation statements)

References 159 publications

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“…The adsorption sites in this article refer to the small range relaxations of water molecules after structural optimization. [42,43] It can be seen from the top view of WG, WGS, and WGMS hydrophobicity geometry (Figure 6a3,b3,c3) that the addition of SiO 2 can reduce the surface tension between water molecules and the coatings, and the resistance of the coating to water surface is improved. [44] Furthermore, the uniformly dispersed MSiO 2 in WGMS greatly reduced the surface free energy of the coating, and the hydrophobicity of WGMS is further improved.…”

Section: Surface Property Analysismentioning

confidence: 99%

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Cheng,

Xue,

Zhou

et al. 2023

Adv Eng Mater

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A new type of water corrosion‐resistant coating which is similar to the “Egg inlaid egg tray” structure has been successfully prepared. Modified chitosan (MCS) and graphene oxide (GO) were cross‐linked with waterborne epoxy resin to form a unique three‐dimensional “Tray” hybrid structure, and the cross‐linking reaction was catalyzed by modified nano‐SiO2 (MSiO2) with an egg‐like morphology. The uniformly dispersed MSiO2 can provide crosslinking reaction sites and is firmly “fixed” in the composite coating, thus not only catalyzing the cross‐linking reactions with well performance, but also improving the interaction between itself and the as formed GO‐MCS structure. Consequently, with the help of “fixed catalytic in‐situ cross‐linking reactions” and synergistic effect between MSiO2 and GO‐MCS, the coating not only shows an improved corrosion resistance with a large impedance modulus at low frequency (|Z|0.01 Hz) of 1.8×106 Ω·cm2, but also possesses good thermal stability and high hydrophobicity. The protective effect of the composite coating on the substrate is more comprehensive and multiple.This article is protected by copyright. All rights reserved.

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Section: Surface Property Analysismentioning

confidence: 99%

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Cheng,

Xue,

Zhou

et al. 2023

Adv Eng Mater

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“…Here the pumping rate R p and the longitudinal relaxation rate Q(P e z )/T e 1 of the 87 Rb isotope are assumed to be identical to those of the 85 Rb isotope because they occupy the same volume with nearly the same collisional environment (the Q(P e z ) factors for enhancing the relaxation of wall collisions [25] are different for these isotopes, but this small rate can be neglected for simplicity). Solving Eqs.…”

Section: Equilibrium Spin Polarizationmentioning

confidence: 99%

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*

Lu¹,

Zhai²,

Zhang³

et al. 2020

Chinese Phys. B

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The total effective spin-exchange relaxation of naturally abundant Rb in a K–Rb–21Ne comagnetometer is analyzed, and the results show that the coexistence of 87Rb and 85Rb isotopes in the same volume can lead to a large extra spin-exchange broadening compared to pure 87Rb. This broadening mainly comes from the contribution of the equivalent reduction in the Rb spin-exchange rate. On this basis, an approximate relaxation model is proposed and experimentally demonstrated to be more accurate than that from a previous work. This study also provides a method for determining the properties of alkali-metal vapor cells.

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“…[1][2][3][4] A state of the art spin-exchange relaxation-free (SERF) magnetometer can achieve the best fundamental sensitivity with the advantage of a flexible configuration and low cost, making it the most promising technology in this field. [5][6][7] The core component of a SERF magnetometer is an atomic vapor cell containing an alkali metal and buffer gas; [8,9] its performance determines the sensitivity of the magnetic measurement. [10,11] Artificial operations during the fabrication process affect the components of the vapor cells, resulting in inconsistent parameters in the same batch.…”

Section: Introductionmentioning

confidence: 99%

A robust method for performance evaluation of the vapor cell for magnetometry

Li¹,

Zou²,

Yin³

et al. 2023

Chinese Phys. B

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A robust performance evaluation method for vapor cells used in magnetometers is proposed in this work. The performance of the vapor cell determines the magnetic measurement sensitivity, which is the core parameter of the magnetometer. After establishing the relationship between the intrinsic sensitivity and the total relaxation rate, the total relaxation rate of the vapor cell can be obtained to represent the intrinsic sensitivity of the magnetometer by fitting the parameters of the magnetic resonance experiments. The total relaxation rate measurement method based on the magnetic resonance experiment proposed in this work is robust and insensitive to ambient noise. Experiments show that compared with the conventional sensitivity measurement, the total relaxation rate affected by magnetic noise below 0.9 nT, pump light frequency noise below 1.5 GHz, pump light power noise below 9%, probe light power noise below 3%, and 150±3 ℃ temperature fluctuation deviates less than 2% from the noise-free situation. This robust performance evaluation method for vapor cells is conducive to construct a multi-channel high spatial resolution cardio-encephalography system.

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Advances in anti-relaxation coatings of alkali-metal vapor cells

Cited by 28 publications

References 159 publications

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*

A robust method for performance evaluation of the vapor cell for magnetometry

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Advances in anti-relaxation coatings of alkali-metal vapor cells

Cited by 28 publications

References 159 publications

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Study on the Corrosion and High‐Temperature‐Resistant Coating for In Situ Crosslinking Reaction Catalyzed by a Special “Egg Inlaid Egg Tray” Structure

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–21Ne self-compensated atomic comagnetometer*

A robust method for performance evaluation of the vapor cell for magnetometry

Contact Info

Product

Resources

About

Spin-exchange relaxation of naturally abundant Rb in a K–Rb–²¹Ne self-compensated atomic comagnetometer*