Relevant bibliographies by topics / Cylindre Janus

Academic literature on the topic 'Cylindre Janus'

Author: Grafiati
Published: 25 May 2024

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Journal articles on the topic "Cylindre Janus"

1

Liu, Volker Abetz, and Axel H. E. Müller. "Janus Cylinders." Macromolecules 36, no. 21 (October 2003): 7894–98. http://dx.doi.org/10.1021/ma0345551.

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2

Zhang, Kai, Fu-Zhen Tian, and Ming-Zhou Yu. "Induced-charge electroosmosis around conducting and Janus cylinder in microchip." Thermal Science 16, no. 5 (2012): 1502–5. http://dx.doi.org/10.2298/tsci1205502z.

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The induced-charge elecetroosmosis around conducting/Janus cylinder with arbitrary Debye thickness is studied numerically, when an direct current weak electric filed is suddenly applied in a confined microchannel. It?s found that there are four large circulations around the conducting cylinder, and the total flux in the microchannel is zero; there are two smaller circulations around the Janus cylinder, and they are compressed to wall. A bulk flux, which has a parabolic relation with the applied electric field, is also predicted.
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3

Janssens, Stoffel D., Vikash Chaurasia, and Eliot Fried. "Effect of a surface tension imbalance on a partly submerged cylinder." Journal of Fluid Mechanics 830 (September 29, 2017): 369–86. http://dx.doi.org/10.1017/jfm.2017.537.

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We perform a static analysis of a circular cylinder that forms a barrier between surfactant-laden and surfactant-free portions of a liquid–gas interface. In addition to determining the general implications of the balances for forces and torques, we quantify how the imbalance $\unicode[STIX]{x0394}\unicode[STIX]{x1D6FE}=\unicode[STIX]{x1D6FE}_{a}-\unicode[STIX]{x1D6FE}_{b}$ between the uniform surface tension $\unicode[STIX]{x1D6FE}_{a}$ of the surfactant-free portion of the interface and the uniform surface tension $\unicode[STIX]{x1D6FE}_{b}$ of the surfactant-laden portion of the interface influences the load-bearing capacity of a hydrophobic cylinder. Moreover, we demonstrate that the difference between surface tensions on either side of a cylinder with a cross-section of arbitrary shape induces a horizontal force component $f^{h}$ equal to $\unicode[STIX]{x0394}\unicode[STIX]{x1D6FE}$ in magnitude, when measured per unit length of the cylinder. With an energetic argument, we show that this relation also applies to a rod-like barrier with cross-sections of variable shape. In addition, we apply our analysis to amphiphilic Janus cylinders and we discuss practical implications of our findings for Marangoni propulsion and surface pressure measurements.
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4

Castiñeira-Ibañez, Sergio, Daniel Tarrazó-Serrano, Antonio Uris, and Constanza Rubio. "Tunable acoustic hooks from Janus cylinder." Results in Physics 24 (May 2021): 104134. http://dx.doi.org/10.1016/j.rinp.2021.104134.

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Zhang, Kai, Xiao-Jing Mi, and Ming-Zhou Yu. "Design of super-efficient mixer based on induced charge electroosmotic." Thermal Science 16, no. 5 (2012): 1534–38. http://dx.doi.org/10.2298/tsci1205534z.

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The super-efficient sample mixing induced by the induced-charge electrokinetic flow around conducting/Janus cylinder was numerically studied in a confined |U-shaped microchannel with suddenly applied DC weak electric filed. It?s found that there are four large circulations around the conducting cylinder and two smaller circulations around the Janus cylinder. The results show that samples can still be well mixed with high flux due to the induced electroosmosis. It is demonstrated that the local flow circulations provide effective means to enhance the flow mixing between different solutions. The dependence of the degree of mixing enhancement on the electric field is also predicted.
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Steinhaus, Andrea, Deepika Srivastva, Arash Nikoubashman, and André H. Gröschel. "Janus Nanostructures from ABC/B Triblock Terpolymer Blends." Polymers 11, no. 7 (June 30, 2019): 1107. http://dx.doi.org/10.3390/polym11071107.

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Lamella-forming ABC triblock terpolymers are convenient building blocks for the synthesis of soft Janus nanoparticles (JNPs) by crosslinking the B domain that is “sandwiched” between A and C lamellae. Despite thorough synthetic variation of the B fraction to control the geometry of the sandwiched microphase, so far only Janus spheres, cylinders, and sheets have been obtained. In this combined theoretical and experimental work, we show that the blending of polybutadiene homopolymer (hPB) into lamella morphologies of polystyrene-block-polybutadiene-block-polymethylmethacrylate (SBM) triblock terpolymers allows the continuous tuning of the polybutadiene (PB) microphase. We systematically vary the volume fraction of hPB in the system, and we find in both experiments and simulations morphological transitions from PB-cylinders to perforated PB-lamellae and further to continuous PB-lamellae. Our simulations show that the hPB is distributed homogeneously in the PB microdomains. Through crosslinking of the PB domain and redispersion in a common solvent for all blocks, we separate the bulk morphologies into Janus cylinders, perforated Janus sheets, and Janus sheets. These studies suggest that more complex Janus nanostructures could be generated from ABC triblock terpolymers than previously expected.
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7

Oratis, Alexandros T., Timothy P. Farmer, and James C. Bird. "Capillary induced twisting of Janus cylinders." Soft Matter 13, no. 41 (2017): 7556–61. http://dx.doi.org/10.1039/c7sm01288h.

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8

Ruhland, Thomas M., André H. Gröschel, Andreas Walther, and Axel H. E. Müller. "Janus Cylinders at Liquid–Liquid Interfaces." Langmuir 27, no. 16 (August 16, 2011): 9807–14. http://dx.doi.org/10.1021/la201863x.

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9

Liu, Weiyu, Ye Tao, Yaoyao Chen, Zhenyou Ge, Junshuo Chen, and Yanbo Li. "Developing an Active Microfluidic Pump and Mixer Driven by AC Field-Effect-Mediated Induced-Charge Electro-Osmosis of Metal–Dielectric Janus Micropillars: Physical Perspective and Simulation Analysis." Applied Sciences 13, no. 14 (July 16, 2023): 8253. http://dx.doi.org/10.3390/app13148253.

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We propose herein a novel microfluidic approach for the simultaneous active pumping and mixing of analytes in a straight microchannel via the AC field-effect control of induced-charge electro-osmosis (ICEO) around metal–dielectric solid Janus cylinders of inherent inhomogeneous electrical polarizability immersed in an electrolyte solution. We coin the term “Janus AC flow field-effect transistor (Janus AC-FFET)” to describe this interesting physical phenomenon. The proposed technique utilizes a simple device geometry, in which one or a series of Janus microcylinders are arranged in parallel along the centerline of the channel’s bottom surface, embedding a pair of 3D sidewall driving electrodes. By combining symmetry breaking in both surface polarizability and the AC powering scheme, it is possible, on demand, to adjust the degree of asymmetry of the ICEO flow profile in two orthogonal directions, which includes the horizontal pump and transversal rotating motion. A comprehensive mathematical model was developed under the Debye–Hückel limit to elucidate the physical mechanism underlying the field-effect-reconfigurable diffuse-charge dynamics on both the dielectric and the metal-phase surfaces of the Janus micropillar. For innovation in applied science, an advanced microdevice design integrating an array of discrete Janus cylinders subjected to two oppositely polarized gate terminals is recommended for constructing an active microfluidic pump and mixer, even without external moving parts. Supported by a simulation analysis, our physical demonstration of Janus AC-FFET provides a brand-new approach to muti-directional electro-convective manipulation in modern microfluidic systems.
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10

Choi, Woorak, and Sungchan Yun. "Behavior of Compound Materials on Superhydrophobic Cylinders: Effects of Droplet’s Size and Interface Angle." Korean Journal of Metals and Materials 62, no. 3 (March 5, 2024): 222–28. http://dx.doi.org/10.3365/kjmm.2024.62.3.222.

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Compound droplets can consist of two or more immiscible substances sharing an interface. Among such droplets, the low-viscosity component of Janus droplets can exhibit peculiar bouncing behavior on nonwettable surfaces. There have been recent advances in droplet control technologies, however the impact dynamics of droplets on complex surfaces, and strategies to control their behavior, have not been extensively studied. This study employs the volume of fluid method to analyze the effects of Janus droplet size and the initial interface angle on the dynamics of the two fluidic components in droplets on superhydrophobic cylinders. Janus droplets are composed of low-viscosity (W-) and high-viscosity liquid (G-component). The dynamic characteristics of Janus droplets are investigated as a function of Weber number (<i>We</i>), initial interface angle, the ratio of the droplet’s diameter to the cylinder’s diameter, and viscosity ratio (α). Numerical models provide a regime map of the separation ratio of Janus droplets based on We and α, and the influence of droplet size on asymmetric bouncing is discussed. This study also examines the threshold We at which separation begins after impact, varying with droplet size and α. In addition, the shape evolutions of the droplets are discussed for various initial interface angles to understand the bouncing behavior and separation efficiency. This study is expected to provide valuable strategies for controlling droplet behavior and separation in applications such as liquid purification, rheology, and solidification.
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Dissertations / Theses on the topic "Cylindre Janus"

1

Janas, Peter [Verfasser], and Andreas [Akademischer Betreuer] Kempf. "Large eddy simulation of in-cylinder phenomena in spark ignition engines / Peter Janas ; Betreuer: Andreas Kempf." Duisburg, 2017. http://d-nb.info/114043554X/34.

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Janas, Peter Robert [Verfasser], and Andreas [Akademischer Betreuer] Kempf. "Large eddy simulation of in-cylinder phenomena in spark ignition engines / Peter Janas ; Betreuer: Andreas Kempf." Duisburg, 2017. http://d-nb.info/114043554X/34.

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