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Related Concept Videos

Surface Tension of Fluid01:22

Surface Tension of Fluid

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Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
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Surface Tension and Surface Energy01:16

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When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
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Hydrostatic Pressure Force on a Curved Surface01:04

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Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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Fluid Pressure01:14

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In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
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Fluid Pressure over Flat Plate of Variable Width01:02

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When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
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There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
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Taking Advantage of Reduced Droplet-surface Interaction to Optimize Transport of Bioanalytes in Digital Microfluidics
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Fluid Control on Bionics-Energized Surfaces.

Ting Wang1, Jiexin Hou1, Mingmei Wang2

  • 1Department of Mechanical Engineering, Hong Kong Polytechnic University, 999077, Hong Kong, China.

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Summary
This summary is machine-generated.

Bioengineered surfaces mimic natural designs for advanced fluid control. This review explores fluid phenomena on natural and engineered surfaces, guiding future innovations in bioinspired engineering.

Keywords:
bioinspired surfacesdroplet transportfluid manipulationheterogeneous surfacesliquid transportsurface tensionsurface wettabilityvapor transport

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Area of Science:

  • Surface science and fluid dynamics
  • Bioinspired engineering and materials science

Background:

  • Engineered surfaces are crucial for fluid applications like self-cleaning, anti-icing, thermal management, and water energy harvesting.
  • Natural biological surfaces, especially heterogeneous ones, exhibit remarkable fluid behaviors offering inspiration for artificial designs.

Purpose of the Study:

  • To explore fluid phenomena on natural biological surfaces.
  • To review fluid manipulation on bioengineered surfaces, focusing on droplets, liquid flows, and vapor flows.
  • To discuss surface design strategies, their limitations, and challenges for real-world applications.

Main Methods:

  • Review of fundamental principles governing fluid motion on homogeneous and heterogeneous surfaces.
  • Analysis of surface design strategies for various fluid scenarios.
  • Identification of challenges and future research directions in bioinspired fluidics.

Main Results:

  • Understanding of symmetric fluid motion on homogeneous surfaces and directed motion on heterogeneous surfaces.
  • Evaluation of engineered surfaces' strengths and limitations for specific fluid applications.
  • Identification of key challenges in implementing engineered surfaces in practical fluid systems.

Conclusions:

  • Bioinspired engineering offers significant potential for advancing fluid science.
  • Further research into bioengineered surfaces can lead to breakthroughs in diverse fluid applications.
  • Addressing real-world challenges is crucial for the successful deployment of engineered surfaces.