Search Results - "Papathanasiou, Athanasios G."

Thermocapillary Droplet Actuation: Effect of Solid Structure and Wettability by Karapetsas, George, Chamakos, Nikolaos T, Papathanasiou, Athanasios G

“…We examine the thermocapillary-driven flow of a droplet on a nonuniformly heated patterned surface. Using a sharp-interface scheme, capable of efficiently…”
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Simulation of Electrowetting-Induced Droplet Detachment: A Study of Droplet Oscillations on Solid Surfaces by Theodorou, Nicolas T, Sourais, Alexandros G, Papathanasiou, Athanasios G

“…The electrowetting-induced detachment of droplets from solid surfaces is important for numerous applications in the fields of heat transfer and fluid…”
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Electropneumatic Surfaces: Pairing Electrowetting and Air Pressure for Reversible Droplet Mobility Switching by Markodimitrakis, Ioannis E., Vourdas, Nikolaos, Papathanasiou, Athanasios G.

“…Designing surfaces with controllable wettability and exploring methodologies for manipulating liquid motion on solid surfaces is an important research…”
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Modelling of Electrowetting-Induced Droplet Detachment and Jumping over Topographically Micro-Structured Surfaces by Sourais, Alexandros G., Papathanasiou, Athanasios G.

“…Detachment and jumping of liquid droplets over solid surfaces under electrowetting actuation are of fundamental interest in many microfluidic and heat transfer…”
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On the Connection between Dielectric Breakdown Strength, Trapping of Charge, and Contact Angle Saturation in Electrowetting by Drygiannakis, Antonis I, Papathanasiou, Athanasios G, Boudouvis, Andreas G

“…Electrowetting on dielectric (EWOD) is simulated by solving the equations of capillary electrohydrostatics, by the Galerkin/finite element method. Aiming to…”
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Superior performance of multilayered fluoropolymer films in low voltage electrowetting by Papageorgiou, Dimitrios P., Tserepi, Angeliki, Boudouvis, Andreas G., Papathanasiou, Athanasios G.

“…[Display omitted] ► Multilayered hydrophobic dielectric featuring plasma-deposited fluorocarbon interlayer. ► Increased lifetime of the proposed multilayered…”
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Highlighting the Role of Dielectric Thickness and Surface Topography on Electrospreading Dynamics by Chamakos, Nikolaos T, Sema, Dionysios G, Papathanasiou, Athanasios G

“…The electrospreading behavior of a liquid drop on a solid surface is of fundamental interest in many technological processes. Here we study the effect of the…”
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Spatiotemporal Addressing of Surface Activity by Wolff, Janpeter, Papathanasiou, Athanasios G., Kevrekidis, Ioannis G., Rotermund, Harm Hinrich, Ertl, Gerhard

“…We have modified surface catalytic activity in real time and space by focusing an addressable laser beam to differentially heat a platinum (110) single-crystal…”
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Effect of substrate topography, material wettability and dielectric thickness on reversible electrowetting by Chamakos, Nikolaos T., Karapetsas, George, Papathanasiou, Athanasios G.

“…[Display omitted] Recent experiments by Kavousanakis et al., Langmuir, 2018 [1], showed that reversible electrowetting on superhydrophobic surfaces can be…”
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Progress in Modeling Wetting Phenomena on Structured Substrates by Chamakos, Nikolaos T., Sema, Dionysios G., Papathanasiou, Athanasios G.

“…Research on wetting phenomena aims to initially understand the underlying physics and then to fabricate smart, functional surfaces with desirable wetting…”
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How to Achieve Reversible Electrowetting on Superhydrophobic Surfaces by Kavousanakis, Michail E, Chamakos, Nikolaos T, Ellinas, Kosmas, Tserepi, Angeliki, Gogolides, Evangelos, Papathanasiou, Athanasios G

“…Collapse (Cassie to Wenzel) wetting transitions impede the electrostatically induced reversible modification of wettability on superhydrophobic surfaces,…”
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Connection of Intrinsic Wettability and Surface Topography with the Apparent Wetting Behavior and Adhesion Properties by Kavousanakis, Michail E, Chamakos, Nikolaos T, Papathanasiou, Athanasios G

“…The need for connecting the intrinsic material wettability with surface geometry, adhesion to liquids, and the apparent wettability is of primary importance…”
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Neither Lippmann nor Young: Enabling Electrowetting Modeling on Structured Dielectric Surfaces by Chamakos, Nikolaos T, Kavousanakis, Michail E, Papathanasiou, Athanasios G

“…Aiming to illuminate mechanisms of wetting transitions on geometrically patterned surfaces induced by the electrowetting phenomenon, we present a novel…”
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Hierarchical, Plasma Nanotextured, Robust Superamphiphobic Polymeric Surfaces Structurally Stabilized Through a Wetting-drying Cycle by Gnanappa, Arun Kumar, Papageorgiou, Dimitrios P., Gogolides, Evangelos, Tserepi, Angeliki, Papathanasiou, Athanasios G., Boudouvis, Andreas G.

“…Plasma etched and simultaneously randomly roughened (nanotextured) polymethylmethacrylate (PMMA) substrates show hierarchical roughness and complex…”
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Nanomechanical and nanotribological properties of hydrophobic fluorocarbon dielectric coating on tetraethoxysilane for electrowetting applications by Koumoulos, Elias P., Charitidis, Costas A., Papageorgiou, Dimitrios P., Papathanasiou, Athanasios G., Boudouvis, Andreas G.

“…Low voltage electrowetting (EW) systems are typically made of stacks of an insulating dielectric layer underneath a hydrophobic top coating. Of importance here…”
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Engineering the geometry of stripe-patterned surfaces toward efficient wettability switching by Kavousanakis, Michail E., Colosqui, Carlos E., Papathanasiou, Athanasios G.

“…•Lattice Boltzmann simulations are performed on striped surfaces.•Hysteretic transitions between suspended and collapsed states are demonstrated.•We determine…”
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Dielectrophoretic liquid actuation on nano-textured super hydrophobic surfaces by Prakash, Ravi, Papageorgiou, Dimitrios P., Papathanasiou, Athanasios G., Kaler, Karan V.I.S.

“…Nano-textured super hydrophobic (SH) surfaces can achieve very high droplet contact angles (typically >150°) and are furthermore associated with reduced…”
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Progress toward reversible electrowetting on geometrically patterned superhydrophobic surfaces by Papathanasiou, Athanasios G.

“…By combining the fascinating wetting properties of geometrically patterned surfaces with the versatility of electrowetting in modifying the apparent material…”
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Performance of multilayered fluoropolymer surface coating for DEP surface microfluidic devices by Prakash, Ravi, Kaler, Karan V. I. S., Papageorgiou, Dimitrios P., Papathanasiou, Athanasios G.

“…One of the key structural features of a surface microfluidic (SMF) device is the surface coating, since it directly affects both the performance and…”
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Mesoscopic model for microscale hydrodynamics and interfacial phenomena: slip, films, and contact-angle hysteresis by Colosqui, Carlos E, Kavousanakis, Michail E, Papathanasiou, Athanasios G, Kevrekidis, Ioannis G

“…We present a model based on the lattice Boltzmann equation that is suitable for the simulation of dynamic wetting. The model is capable of exhibiting…”
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