scholarly journals Time–Temperature Integrating Optical Sensors Based on Gradient Colloidal Crystals (Adv. Mater. 40/2021)

2021 ◽  
Vol 33 (40) ◽  
pp. 2170318
Author(s):  
Marius Schöttle ◽  
Thomas Tran ◽  
Tanja Feller ◽  
Markus Retsch
Keyword(s):  
Optical Sensors ◽  
Colloidal Crystals

Polyhedral Metal-Organic Framework Monolayer Colloidal Crystals with Sharpened and Crystal Facet-Dependent Selectivity for Organic Vapor Sensing

2021 ◽  
Author(s):  
Shimo Yu ◽  
Xiang Wang ◽  
Xiuling Jiao ◽  
Cheng Li ◽  
Dairong Chen
Keyword(s):  
Optical Sensors ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Colloidal Crystals ◽  
Crystal Facet ◽  
Organic Vapor ◽  
Vapor Sensing ◽  
Metal Organic ◽  
Organic Framework

Metal-organic frameworks (MOFs) are potential sensing materials with inherently sensitivity for molecule detection. However, reliable and reproducible MOF-based optical sensors with well-defined selectivity suitable for practical situations are rarely reported,...

scholarly journals Time–Temperature Integrating Optical Sensors Based on Gradient Colloidal Crystals

2021 ◽  
Vol 33 (40) ◽  
pp. 2101948
Author(s):  
Marius Schöttle ◽  
Thomas Tran ◽  
Tanja Feller ◽  
Markus Retsch
Keyword(s):  
Optical Sensors ◽  
Colloidal Crystals

Comparison of two devices for measuring exercise transcutaneous oxygen pressures in patients with claudication

VASA ◽  
2015 ◽  
Vol 44 (5) ◽  
pp. 355-362 ◽  
Author(s):  
Marie Urban ◽  
Alban Fouasson-Chailloux ◽  
Isabelle Signolet ◽  
Christophe Colas Ribas ◽  
Mathieu Feuilloy ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Optical Sensors ◽  
Chemical Sensors ◽  
Transcutaneous Oxygen ◽  
Starting Values ◽  
Two Systems ◽  
Transcutaneous Oxygen Pressure ◽  
New Sensors ◽  
Changes Over Time ◽  
Over Time

Abstract. Summary: Background: We aimed at estimating the agreement between the Medicap® (photo-optical) and Radiometer® (electro-chemical) sensors during exercise transcutaneous oxygen pressure (tcpO2) tests. Our hypothesis was that although absolute starting values (tcpO2rest: mean over 2 minutes) might be different, tcpO2-changes over time and the minimal value of the decrease from rest of oxygen pressure (DROPmin) results at exercise shall be concordant between the two systems. Patients and methods: Forty seven patients with arterial claudication (65 + / - 7 years) performed a treadmill test with 5 probes each of the electro-chemical and photo-optical devices simultaneously, one of each system on the chest, on each buttock and on each calf. Results: Seventeen Medicap® probes disconnected during the tests. tcpO2rest and DROPmin values were higher with Medicap® than with Radiometer®, by 13.7 + / - 17.1 mm Hg and 3.4 + / - 11.7 mm Hg, respectively. Despite the differences in absolute starting values, changes over time were similar between the two systems. The concordance between the two systems was approximately 70 % for classification of test results from DROPmin. Conclusions: Photo-optical sensors are promising alternatives to electro-chemical sensors for exercise oximetry, provided that miniaturisation and weight reduction of the new sensors are possible.

The elasto-hydrodynamic equations of the colloidal crystals

1988 ◽  
Vol 49 (7) ◽  
pp. 1119-1125 ◽  
Author(s):  
M. Jorand ◽  
E. Dubois-Violette ◽  
B. Pansu ◽  
F. Rothen
Keyword(s):  
Colloidal Crystals ◽  
Hydrodynamic Equations

THIN COLLOIDAL CRYSTALS : STRUCTURES AND OPTICAL PROPERTIES

1985 ◽  
Vol 46 (C3) ◽  
pp. C3-323-C3-324
Author(s):  
B. Pansu ◽  
P. Pieraski
Keyword(s):  
Optical Properties ◽  
Colloidal Crystals

SHEAR ELASTICITY AND VISCOSITY IN COLLOIDAL CRYSTALS AND LIQUIDS

1985 ◽  
Vol 46 (C3) ◽  
pp. C3-269-C3-280 ◽  
Author(s):  
H. M. Lindsay ◽  
P. M. Chaikin
Keyword(s):  
Colloidal Crystals ◽  
Shear Elasticity

High-voltage monitoring by the fiber-optic recirculating measuring system

2020 ◽  
pp. 38-44
Author(s):  
A. V. Polyakov ◽  
M. A. Ksenofontov
Keyword(s):  
Optical Fibers ◽  
High Voltage ◽  
Optical Sensors ◽  
Electromagnetic Interference ◽  
Fiber Optic ◽  
Electric Power Industry ◽  
Measuring System ◽  
Voltage Range ◽  
External Electromagnetic Fields ◽  
Optic Communication

Optical technologies for measuring electrical quantities attract great attention due to their unique properties and significant advantages over other technologies used in high-voltage electric power industry: the use of optical fibers ensures high stability of measuring equipment to electromagnetic interference and galvanic isolation of high-voltage sensors; external electromagnetic fields do not influence the data transmitted from optical sensors via fiber-optic communication lines; problems associated with ground loops are eliminated, there are no side electromagnetic radiation and crosstalk between the channels. The structure and operation principle of a quasi-distributed fiber-optic high-voltage monitoring system is presented. The sensitive element is a combination of a piezo-ceramic tube with an optical fiber wound around it. The device uses reverse transverse piezoelectric effect. The measurement principle is based on recording the change in the recirculation frequency under the applied voltage influence. When the measuring sections are arranged in ascending order of the measured effective voltages relative to the receiving-transmitting unit, a relative resolution of 0,3–0,45 % is achieved for the PZT-5H and 0,8–1,2 % for the PZT-4 in the voltage range 20–150 kV.

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