scholarly journals Relaxation to Equilibrium in the One-Dimensional Thin-Film Equation with Partial Wetting and Linear Mobility

2021 ◽  
Author(s):  
Mohamed Majdoub ◽  
Nader Masmoudi ◽  
Slim Tayachi
Keyword(s):  
Thin Film ◽  
One Dimensional ◽  
Partial Wetting ◽  
Relaxation To Equilibrium ◽  
Thin Film Equation ◽  
The One

Effects of the Multilayer Structure on the Responsivity of Pyroelectric Thin Film Detectors

1994 ◽  
Vol 360 ◽  
Author(s):  
Zhu Jianguo ◽  
Xiao Dingquan ◽  
Qian Zhenghong ◽  
Zhang Wen ◽  
Du Siaosong
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Integrated Circuit ◽  
Multilayer Structure ◽  
Modulation Frequency ◽  
Flow Equation ◽  
One Dimensional ◽  
The One ◽  
Direct Incorporation ◽  
Room Temperature Operation

AbstractPyroelectric thin film detectors have advantages of wavelength independent sensitivity, room temperature operation and direct incorporation with integrated circuit amplifiers. Pyroelectric thin films with good quality have be prepared by many advanced thin film technologies [1-2]. The responsivity of pyroelectric thin film detectors is dependent on the thermal properties of the substrate, on which pyroelectric thin film detectors are prepared. The heat conduction in the detectors was investigated using the one-dimensional heat flow equation and the expressions describing the detectors performance were derived for pyroelectric thin films detectors with multilayer structure. The numerical simulation showed that the pyroelectric thin film detectors need effective heat isolation. If the air gap could be the heat isolation layer, which is between the bottom electrode and substrate, the iesponsivity of detectors would be higher than that of detectors which have no heat isolation in certain modulation frequency range.

Elastic Deformation of Surface Roughness in Thin Film Hydrodynamic Lubrication

2011 ◽  
Author(s):  
Kazuyuki Yagi ◽  
Joichi Sugimura
Keyword(s):  
Thin Film ◽  
Elastic Deformation ◽  
Small Amplitude ◽  
Reynolds Equation ◽  
Hydrodynamic Lubrication ◽  
Rigid Surface ◽  
Local Pressure ◽  
One Dimensional ◽  
Compliant Surface ◽  
The One

In the current study, the influence of elastic deformation in thin film hydrodynamic lubrication was numerically investigated. The one dimensional Reynolds equation was solved with considering the piezoviscosity effect of the lubricant and elastic deformation of the sliding surface in flat-flat contacts. The contact area comprised of a stationary rigid surface with sine waves with amplitude of several nano meters and a moving flat compliant surface. The obtained numerical results show that small amplitude of roughness compared with the averaged film thickness influences the pressure distribution of the hydrodynamic film. Reduction of the roughness and decay in wave of the roughness occurred because of the elastic deformation induced by local pressure generation.

ON THE COOLING OF A FREE THIN FILM AT THE PRESENCE OF THE VAN DER WAALS FORCES

2004 ◽  
Vol 9 (4) ◽  
pp. 299-312
Author(s):  
G. Gromyko ◽  
S. Tabakova ◽  
L. Popova
Keyword(s):  
Thin Film ◽  
Finite Difference ◽  
Longitudinal Velocity ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Reynolds Numbers ◽  
Middle Plane ◽  
One Dimensional ◽  
The One ◽  
Hamaker Constants

The cooling of a hot free thin viscous film attached to a rectangular colder frame is considered. The film is under the action of capillary and van der Waals forces and is symmetric with respect to a middle plane. The one@dimensional case of the corresponding non‐stationary nonlinear thermo‐dynamic problem is solved numerically by a finite difference scheme. The numerical results for the film shape, longitudinal velocity and temperature are obtained for different Reynolds numbers, dimensionless Hamaker constants and radiation numbers.

Exploring the Multidimensional Facets of Authoritarianism: Authoritarian Aggression and Social Dominance Orientation

2008 ◽  
Vol 67 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Stefano Passini
Keyword(s):  
Social Dominance ◽  
Factor Model ◽  
Three Dimensional ◽  
Social Dominance Orientation ◽  
Model Fit ◽  
Regression Analyses ◽  
One Dimensional ◽  
Confirmatory Factor ◽  
The One ◽  
Better Than

The relation between authoritarianism and social dominance orientation was analyzed, with authoritarianism measured using a three-dimensional scale. The implicit multidimensional structure (authoritarian submission, conventionalism, authoritarian aggression) of Altemeyer’s (1981, 1988) conceptualization of authoritarianism is inconsistent with its one-dimensional methodological operationalization. The dimensionality of authoritarianism was investigated using confirmatory factor analysis in a sample of 713 university students. As hypothesized, the three-factor model fit the data significantly better than the one-factor model. Regression analyses revealed that only authoritarian aggression was related to social dominance orientation. That is, only intolerance of deviance was related to high social dominance, whereas submissiveness was not.

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