Liquid–Solid Contact State in Subcooled Pool Transition Boiling System

1986 ◽  
Vol 108 (1) ◽  
pp. 219-221 ◽  
Author(s):  
S. Inada ◽  
Y. Miyasaka ◽  
S. Sakumoto ◽  
G. R. Chandratilleke
Keyword(s):  
Solid Contact ◽  
Contact State

Effects of Heating Surface Materials on a Liquid–Solid Contact State in a Sessile Drop-Boiling System

1993 ◽  
Vol 115 (1) ◽  
pp. 222-230 ◽  
Author(s):  
S. Inada ◽  
W.-J. Yang
Keyword(s):  
High Speed ◽  
Sessile Drop ◽  
Bubble Radius ◽  
Heating Surface ◽  
Experimental Investigations ◽  
High Speed Photography ◽  
Solid Contact ◽  
Contact State ◽  
Interfacial Pressure ◽  
The Relationship

Three experimental investigations are performed on the liquid–solid contact state at the instant when a liquid comes in contact with a heating surface in the transition-boiling regime between the maximum evaporation rate point and the spheroidal state: (1) measuring the piezoelectric potential by means of a quartz oscillator being placed on the heating surface, (2) monitoring the boiling sound generated at the instant of liquid–solid contact using a condenser microphone, and (3) observation of drop behavior, by means of high-speed photography. The information obtained from these three investigations is synthesized to quantify the liquid–solid contact state. The study has disclosed the roles of thermal properties and heating surface temperatures on the endurance time of the instantaneous liquid–solid contact state and the relationship between the critical bubble radius and the measured vapor–liquid interfacial pressure difference.

scholarly journals Liquid-solid contact state and fluctuation of the vapor film thickness of a drop impinging on a heated surface.

1988 ◽  
Vol 21 (5) ◽  
pp. 463-468 ◽  
Author(s):  
SHIGEAKI INADA ◽  
YOSHIKI MIYASAKA ◽  
KENJI SAKAMOTO ◽  
KEIJI HOJO
Keyword(s):  
Film Thickness ◽  
Heated Surface ◽  
Vapor Film ◽  
Solid Contact ◽  
Contact State

scholarly journals 3D-printed manifold integrating solid contact ion-selective electrodes for multiplexed ion concentration measurements in urine

Talanta ◽  
2021 ◽  
pp. 122491
Author(s):  
Marek Dębosz ◽  
József Kozma ◽  
Radosław Porada ◽  
Marcin Wieczorek ◽  
Justyna Paluch ◽  
...  
Keyword(s):  
Ion Concentration ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
3D Printed ◽  
Concentration Measurements

scholarly journals Linear and Nonlinear Normal Interface Stiffness in Dry Rough Surface Contact Measured Using Longitudinal Ultrasonic Waves

2021 ◽  
Vol 11 (12) ◽  
pp. 5720
Author(s):  
Saeid Taghizadeh ◽  
Robert Sean Dwyer-Joyce
Keyword(s):  
Rough Surface ◽  
Contact Pressure ◽  
Ultrasonic Wave ◽  
Bulk Material ◽  
Nonlinear Differential Equations ◽  
Small Deformation ◽  
Ultrasonic Waves ◽  
Solid Contact ◽  
Interfacial Stiffness ◽  
Linear And Nonlinear

When two rough surfaces are loaded together contact occurs at asperity peaks. An interface of solid contact regions and air gaps is formed that is less stiff than the bulk material. The stiffness of a structure thus depends on the interface conditions; this is particularly critical when high stiffness is required, for example in precision systems such as machine tool spindles. The rough surface interface can be modelled as a distributed spring. For small deformation, the spring can be assumed to be linear; whilst for large deformations the spring gets stiffer as the amount of solid contact increases. One method to measure the spring stiffness, both the linear and nonlinear aspect, is by the reflection of ultrasound. An ultrasonic wave causes a perturbation of the contact and the reflection depends on the stiffness of the interface. In most conventional applications, the ultrasonic wave is low power, deformation is small and entirely elastic, and the linear stiffness is measured. However, if a high-powered ultrasonic wave is used, this changes the geometry of the contact and induces nonlinear response. In previous studies through transmission methods were used to measure the nonlinear interfacial stiffness. This approach is inconvenient for the study of machine elements where only one side of the interface is accessible. In this study a reflection method is undertaken, and the results are compared to existing experimental work with through transmission. The variation of both linear and nonlinear interfacial stiffnesses was measured as the nominal contact pressure was increased. In both cases interfacial stiffness was expressed as nonlinear differential equations and solved to deduce the contact pressure-relative surface approach relationships. The relationships derived from linear and nonlinear measurements were similar, indicating the validity of the presented methods.

scholarly journals Potentiometric Carboxylate Sensors Based on Carbazole-Derived Acyclic and Macrocyclic Ionophores

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 4
Author(s):  
Ville Yrjänä ◽  
Indrek Saar ◽  
Mihkel Ilisson ◽  
Sandip A. Kadam ◽  
Ivo Leito ◽  
...  
Keyword(s):  
Detection Limit ◽  
Vinyl Chloride ◽  
Anion Exchanger ◽  
Linear Range ◽  
Ph Sensitivity ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

Solid-contact ion-selective electrodes with carbazole-derived ionophores were prepared. They were characterized as acetate sensors, but can be used to determine a number of carboxylates. The potentiometric response characteristics (slope, detection limit, selectivity, and pH sensitivity) of sensors prepared with different membrane compositions (ionophore, ionophore concentration, anion exchanger concentration, and plasticizer) were evaluated. The results show that for the macrocyclic ionophores, a larger cavity provided better selectivity. The sensors exhibited modest selectivity for acetate but good selectivity for benzoate. The carbazole-derived ionophores effectively decreased the interference from lipophilic anions, such as bromide, nitrate, iodide, and thiocyanate. The selectivity, detection limit, and linear range were improved by choosing a suitable plasticizer and by reducing the ionophore and anion exchanger concentrations. The influence of the electrode body’s material upon the composition of the plasticized poly(vinyl chloride) membrane, and thus also upon the sensor characteristics, was also studied. The choice of materials for the electrode body significantly affected the characteristics of the sensors.

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