scholarly journals The premolten layer of ice next to a hydrophilic solid surface: correlating adhesion with molecular properties

2017 ◽  
Vol 19 (1) ◽  
pp. 305-317 ◽  
Author(s):  
Jonathan F. D. Liljeblad ◽  
István Furó ◽  
Eric C. Tyrode
Keyword(s):  
Solid Surface ◽  
Molecular Properties

Multiple spectroscopy techniques have been used to correlate macroscopic adhesion to molecular properties of the premolten layer of ice next to silica.

Spectral Widths in the Rate Equations for Photodesorption by Laser Infrared

1983 ◽  
Vol 29 ◽  
Author(s):  
Joachim Heidberg
Keyword(s):  
Solid Surface ◽  
Surface Interaction ◽  
Molecular Properties ◽  
Solid Surfaces ◽  
High Yield ◽  
Rate Equations ◽  
Resonant Laser ◽  
Wavelength Selectivity

ABSTRACTDesorption and evaporation from solid surfaces are induced with high yield and wavelength selectivity by excitation of internal adsorbate vibrations with resonant laser infrared. Simple rate equations describe essential features of the process and relate the photoreaction rate and yield to the intensity, the duration of laser-solid surface interaction and molecular properties of the adsorbate. The significance in photodesorption of the experimentally determined spectral widths is shown. Considering the spectral widths in the theory brings the order of the calculated photo-desorption rates for CH3 F-NaCl and the measured rates (also yields) in better concert.

Microwave resonance method for measuring microliter volumes of free moisture in aviation fuels

2020 ◽  
pp. 49-56
Author(s):  
Vitaly V. Volkov ◽  
Michael A. Suslin ◽  
Jamil U. Dumbolov
Keyword(s):  
Solid Surface ◽  
Free Water ◽  
Resonance Method ◽  
Cavity Resonator ◽  
Maximum Error ◽  
Aviation Fuel ◽  
Fuel Quality ◽  
Microwave Resonance ◽  
Free Moisture ◽  
Microwave Losses

One of the conditions for ensuring the safety of air transport operation is the quality of aviation fuel refueled in aircraft. Fuel quality control is a multi-parameter task that includes monitoring the free moisture content. Regulatory documents establish the content of free water no more than 0.0015% by weight. It is developed a direct electrometric microwave resonance method for controlling free moisture in aviation fuels, which consists in changing the shape of the water drops by pressing them on a solid surface inside a cylindrical cavity resonator. This can dramatically increase dielectric losses. Analytical and experimental analysis of the proposed method is carried out. The control range from 0,5 to 30 μl of absolute volume of moisture in aviation fuels with a maximum error of not morethan 25 % is justified. The sensitivity of the proposed method for monitoring microwave losses in free moisture drops transformed into a thin layer by pressing is an order of magnitude greater than the sensitivity of the method for monitoring microwave losses in moisture drops on a solid surface in a resonator. The proposed method can be used as a basis for the development of devices for monitoring the free moisture of aviation fuels in the conditions of the airfield and laboratory. The direction of development of the method is shown.

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