Optical fiber long-period grating humidity sensor with poly(ethylene oxide)/cobalt chloride coating

2006 ◽  
Vol 45 (19) ◽  
pp. 4567 ◽  
Author(s):  
Maria Konstantaki ◽  
Stavros Pissadakis ◽  
Stergios Pispas ◽  
Nicholas Madamopoulos ◽  
Nikos A. Vainos
Keyword(s):  
Ethylene Oxide ◽  
Optical Fiber ◽  
Humidity Sensor ◽  
Cobalt Chloride ◽  
Long Period Grating ◽  
Long Period ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Chloride Coating

Optical fiber relative humidity sensor based on a hydrogel coated long period grating

2011 ◽  
Author(s):  
Xiujuan Yu ◽  
Liwei Wang ◽  
Jintao Zhang ◽  
Min Zhang ◽  
Shengchun Liu ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Optical Fiber ◽  
Humidity Sensor ◽  
Long Period Grating ◽  
Long Period ◽  
Relative Humidity Sensor

Long Period Fiber Grating Humidity Sensor with Gelatin/Cobalt Chloride coating

2012 ◽  
Author(s):  
Nishtha Panwar ◽  
Umesh Tiwari ◽  
Nidhi Chandel ◽  
Mansoor Khan ◽  
Subhash C. Jain ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
Cobalt Chloride ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating ◽  
Chloride Coating

Optical fiber long-period grating humidity sensor utilizing PEO/CoCl 2 outcladding overlayers

2005 ◽  
Author(s):  
Maria Konstantaki ◽  
George Papaioannou ◽  
Stavros Pissadakis ◽  
Stergios Pispas ◽  
Nicholas Madamopoulos ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Humidity Sensor ◽  
Long Period Grating ◽  
Long Period

Synthesis and characterization of cobalt chloride/poly(ethylene oxide) electrospun hybrid nanofibers

2010 ◽  
Vol 55 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Adurafimihan A. Abiona ◽  
John A. Ajao ◽  
Samuel Chigome ◽  
Jean B. Kana Kana ◽  
Gabriel A. Osinkolu ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Cobalt Chloride ◽  
Synthesis And Characterization ◽  
Hybrid Nanofibers ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Long Period Fiber Grating Humidity Sensor With Gelatin/Cobalt Chloride Coating

2013 ◽  
Vol 13 (11) ◽  
pp. 4139-4140 ◽  
Author(s):  
Nidhi ◽  
Umesh Tiwari ◽  
Nishtha Panwar ◽  
Rajinder Singh Kaler ◽  
Randhir Bhatnagar ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
Cobalt Chloride ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating ◽  
Chloride Coating

The Structure of Radiation Cross-Linked Poly (ethylene oxide) Gels

1971 ◽  
Vol 29 ◽  
pp. 76-77
Author(s):  
C. E. Cluthe ◽  
G. G. Cocks
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Parallel Plate ◽  
Average Molecular Weight ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Nitrogen Gas ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Initial Viscosity

Aqueous solutions of a 1 weight-per cent poly (ethylene oxide) (PEO) were degassed under vacuum, transferred to a parallel plate viscometer under a nitrogen gas blanket, and exposed to Co60 gamma radiation. The Co60 source was rated at 4000 curies, and the dose ratewas 3.8x105 rads/hr. The poly (ethylene oxide) employed in the irradiations had an initial viscosity average molecular weight of 2.1 x 106.The solutions were gelled by a free radical reaction with dosages ranging from 5x104 rads to 4.8x106 rads.

Preparation of Organized Mesoporous Silica from Sodium Metasilicate Solutions in Alkaline Medium Using Nonionic Surfactants

2003 ◽  
Vol 68 (10) ◽  
pp. 2019-2031 ◽  
Author(s):  
Markéta Zukalová ◽  
Jiří Rathouský ◽  
Arnošt Zukal
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Oxide ◽  
Sodium Metasilicate ◽  
Spherical Particles ◽  
Structure Directing Agent ◽  
Inorganic Species ◽  
Poly Ethylene Oxide ◽  
Acidic Conditions ◽  
Poly Ethylene ◽  
Hydrolysis Of

A new procedure has been developed, which is based on homogeneous precipitation of organized mesoporous silica from an aqueous solution of sodium metasilicate and a nonionic poly(ethylene oxide) surfactant serving as a structure-directing agent. The decrease in pH, which induces the polycondensation of silica, is achieved by hydrolysis of ethyl acetate. Owing to the complexation of Na+ cations by poly(ethylene oxide) segments, assembling of the mesostructure appears to occur under electrostatic control by the S0Na+I- pathway, where S0 and I- are surfactant and inorganic species, respectively. As the complexation of Na+ cations causes extended conformation of poly(ethylene oxide) segments, the pore size and pore volume of organized mesoporous silica increase in comparison with materials prepared under neutral or acidic conditions. The assembling of particles can be fully separated from their solidification, which results in the formation of highly regular spherical particles of mesoporous silica.

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