scholarly journals Slip or not slip? A methodical examination of the interface formation model using two-dimensional droplet spreading on a horizontal planar substrate as a prototype system

2012 ◽  
Vol 24 (8) ◽  
pp. 082105 ◽  
Author(s):  
David N. Sibley ◽  
Nikos Savva ◽  
Serafim Kalliadasis
Keyword(s):  
Prototype System ◽  
Two Dimensional ◽  
Formation Model ◽  
Interface Formation ◽  
Droplet Spreading ◽  
Planar Substrate

scholarly journals An Automated System To Replace A Human User In Conventional Laboratory Well Plate Imaging

2017 ◽  
Author(s):  
Connor Verheyen ◽  
Cornelis Rowaan ◽  
Bryan Gatto ◽  
Daniel Gizachew
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Human Error ◽  
Imaging System ◽  
Automated System ◽  
Prototype System ◽  
Successful Implementation ◽  
Two Dimensional ◽  
Image Capture ◽  
Automated Calibration

We here developed an automated well plate imaging system to eliminate the requirement for continuous human operation, thus freeing up the valuable time of a scientific researcher and removing the possibility of fatigue-induced human error. Specifically, we created a prototype system with programmed two-dimensional movement, automated calibration, variable plate configuration compatibility, variable path feasibility, reliable well plate image capture, and an intuitive graphical user interface. Successful implementation of our device would immediately benefit laboratory scientists, giving them more time to pursue the next biomedical breakthroughs.

scholarly journals A system for three-dimensional gaze fixation analysis using eye tracking glasses

2017 ◽  
Vol 5 (4) ◽  
pp. 449-457 ◽  
Author(s):  
Ryo Takahashi ◽  
Hiromasa Suzuki ◽  
Jouh Yeong Chew ◽  
Yutaka Ohtake ◽  
Yukie Nagai ◽  
...  
Keyword(s):  
Eye Tracking ◽  
Three Dimensional ◽  
Prototype System ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Heat Maps ◽  
Gaze Fixation ◽  
Tracking Device ◽  
Two Dimensional Images

Abstract Eye tracking is a technology that has quickly become a commonplace tool for evaluating package and webpage design. In such design processes, static two-dimensional images are shown on a computer screen while a subject's gaze where he or she looks is measured via an eye tracking device. The collected gaze fixation data are then visualized and analyzed via gaze plots and heat maps. Such evaluations using two-dimensional images are often too limited to analyze gaze on three-dimensional physical objects such as products because users look at them not from a single point of view but rather from various angles. Therefore in this study we propose methods for collecting gaze fixation data for a three-dimensional model of a given product and visualizing corresponding gaze plots and heat maps also in three dimensions. To achieve our goals, we used a wearable eye-tracking device, i.e., eye-tracking glasses. Further, we implemented a prototype system to demonstrate its advantages in comparison with two-dimensional gaze fixation methods. Highlights Proposing a method for collecting gaze fixation data for a three-dimensional model of a given product. Proposing two visualization methods for three dimensional gaze data; gaze plots and heat maps. Proposed system was applied to two practical examples of hair dryer and car interior.

scholarly journals Two-Dimensional Droplet Spreading over Random Topographical Substrates

2010 ◽  
Vol 104 (8) ◽  
Author(s):  
Nikos Savva ◽  
Serafim Kalliadasis ◽  
Grigorios A. Pavliotis
Keyword(s):  
Two Dimensional ◽  
Droplet Spreading

scholarly journals The coalescence of liquid drops in a viscous fluid: interface formation model

2014 ◽  
Vol 751 ◽  
pp. 480-499 ◽  
Author(s):  
James E. Sprittles ◽  
Yulii D. Shikhmurzaev
Keyword(s):  
Drop Size ◽  
Experimental Studies ◽  
Fluid Interface ◽  
Formation Model ◽  
Ambient Fluid ◽  
Interface Formation ◽  
Coalescence Process ◽  
Conventional Model ◽  
Internal Interface ◽  
Liquid Drops

AbstractThe interface formation model is applied to describe the initial stages of the coalescence of two liquid drops in the presence of a viscous ambient fluid whose dynamics is fully accounted for. Our focus is on understanding (a) how this model’s predictions differ from those of the conventionally used one, (b) what influence the ambient fluid has on the evolution of the shape of the coalescing drops and (c) the coupling of the intrinsic dynamics of coalescence and that of the ambient fluid. The key feature of the interface formation model in its application to the coalescence phenomenon is that it removes the singularity inherent in the conventional model at the onset of coalescence and describes the part of the free surface ‘trapped’ between the coalescing volumes as they are pressed against each other as a rapidly disappearing ‘internal interface’. Considering the simplest possible formulation of this model, we find experimentally verifiable differences with the predictions of the conventional model showing, in particular, the effect of drop size on the coalescence process. According to the new model, for small drops a non-monotonic time dependence of the bridge expansion speed is a feature that could be looked for in further experimental studies. Finally, the results of both models are compared to recently available experimental data on the evolution of the liquid bridge connecting coalescing drops, and the interface formation model is seen to give a better agreement with the data.

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