Effects of water concentration in the coating solution on the wall relaxation rate of octadecyltrichlorosilane coated rubidium vapor cells

2015 ◽  
Vol 117 (4) ◽  
pp. 043106 ◽  
Author(s):  
Guiying Zhang ◽  
Lihua Wei ◽  
Meiling Wang ◽  
Kaifeng Zhao
Keyword(s):  
Relaxation Rate ◽  
Water Concentration ◽  
Rubidium Vapor ◽  
Coating Solution ◽  
Vapor Cells ◽  
Wall Relaxation

scholarly journals Spherical rubidium vapor cells fabricated by micro glass blowing

2007 ◽  
Author(s):  
E. Jesper Eklund ◽  
Andrei M. Shkel ◽  
Svenja Knappe ◽  
Elizabeth Donley ◽  
John Kitching
Keyword(s):  
Rubidium Vapor ◽  
Vapor Cells

Study of the Phenomena Affecting the Composition of Rubidium Vapor Cells

1968 ◽  
Author(s):  
M.P.R. Thomsen ◽  
L.J. Stief ◽  
R.J. Fallon
Keyword(s):  
Rubidium Vapor ◽  
Vapor Cells

Investigation on spin relaxation of microfabricated vapor cells with buffer gas

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1391-1399
Author(s):  
Runqi Han ◽  
Zheng You ◽  
Yue Shi ◽  
Yong Ruan
Keyword(s):  
Relaxation Time ◽  
Spin Relaxation ◽  
Buffer Gas ◽  
Cell Temperature ◽  
Rubidium Vapor ◽  
The Core ◽  
Vapor Cells ◽  
Mems Technology ◽  
Core Components ◽  
Atomic Sensors

MEMS vapor cells with buffer gas are the core components of chip scale atomic sensors due to the spin precession. We microfabricated rubidium vapor cells filled with neon based on MEMS technology and characterized the performance of MEMS vapor cells by measuring the longitudinal relaxation time. The dependence of spin relaxation time on buffer gas pressure and cell temperature was theoretically and experimentally investigated and the consistency was achieved. This provides a potential simpler approach to evaluate the performance of chip scale atomic sensors, such as atomic magnetometers, based on MEMS vapor cells.

Effect of coating method on release of Glimepiride from porosity osmotic pump tablets (POPTs)

2020 ◽  
pp. 37-45
Keyword(s):  
In Vitro Release ◽  
Osmotic Pump ◽  
Release Time ◽  
Once Daily ◽  
Coating Solution ◽  
Continuous Release ◽  
Red Color ◽  
Coating Method ◽  
Osmotic Agent

In this study, once-daily porosity osmotic pump tablets (POPTs) of Glimepiride were prepared using HPMC K100M (61%), osmotic agent (30% NaCl) coated using two different coating techniques spraying and dipping methods. The coating solution composed of ethyl cellulose (7.5%) w\w in ethanol (90%), castor oil (2%) as water-insoluble plasticizer and Gingo red color (0.5% w\w). In both techniques, the coating level was adjusted to give a 10% increase in the weight of the tablets. The effect of the coating by dipping technique with an increase in the weight of tablet (10 %, 20% & 50%) was also investigated to see the effect coating level on the percentage of drug release from POPTs. The results of the in vitro release of Glimepiride from tablets coated by the spraying method showed longer release time (24 hrs) than those coated with dipping method. On the other hand, increasing the coating level by dipping method retarded the release of the drug from tablets. However, the same retardation effect on release as shown with the spraying technique was only obtained by increasing the coating level with a 50% increase in the weight of the tablet. Thus, coating by spraying is more efficient to prepare POPTs to give a continuous release of Glimepiride from once daily table with the lowest increase in the total weight of the tablet.

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