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Related Concept Videos

Magnetic Damping01:17

Magnetic Damping

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Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
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Magnetic Susceptibility and Permeability01:31

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In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
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Rolling With Slipping01:14

Rolling With Slipping

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Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface.
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can...
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Magnetic Force01:18

Magnetic Force

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In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
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Ferromagnetism01:31

Ferromagnetism

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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Rolling Without Slipping01:09

Rolling Without Slipping

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People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is...
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Updated: Mar 1, 2026

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

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Antiscaling Magnetic Slippery Surfaces.

Ali Masoudi1, Peyman Irajizad1, Nazanin Farokhnia1

  • 1Department of Mechanical Engineering, University of Houston , 4726 Calhoun Road, Houston, Texas 77204-4006, United States.

ACS Applied Materials & Interfaces
|June 1, 2017
PubMed
Summary
This summary is machine-generated.

New magnetic slippery surfaces (MAGSS) offer superior anti-scaling properties by utilizing a liquid-liquid interface to prevent scale formation and adhesion, outperforming conventional solid surfaces in industrial applications.

Keywords:
magnetic gelmagnetic slippery surfacessalt adhesionsalt nucleationscale resistant

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Industrial Engineering

Background:

  • Scale formation is a pervasive issue in industries like oil/gas, water desalination, and food processing.
  • Conventional anti-scaling methods (mechanical, chemical) are often inefficient, costly, and environmentally detrimental.
  • Existing surface modification techniques struggle with scale nucleation and adhesion due to solid-liquid interfaces.

Purpose of the Study:

  • To introduce and evaluate novel magnetic slippery surfaces (MAGSS) for effective scale prevention.
  • To investigate the anti-scaling performance of MAGSS in both static and dynamic (fluid flow) conditions.
  • To demonstrate the potential of MAGSS to overcome limitations of traditional solid surfaces.

Main Methods:

  • Development of magnetic slippery surfaces in two forms: Newtonian fluid (MAGSS) and gel structure (Gel-MAGSS).
  • Evaluation of scale nucleation and adhesion on MAGSS compared to conventional solid surfaces.
  • Testing of MAGSS performance under static and dynamic (high shear flow) conditions.

Main Results:

  • MAGSS exhibit significantly reduced scale accretion, up to an order of magnitude lower than solid surfaces.
  • These surfaces effectively lower the energy barrier for scale nucleation via a liquid-liquid interface.
  • MAGSS demonstrate excellent longevity and stability, even under high shear flow conditions.

Conclusions:

  • Magnetic slippery surfaces offer a promising, highly effective solution for industrial scale prevention.
  • The liquid-liquid interface design minimizes scale nucleation and adhesion, surpassing conventional methods.
  • MAGSS present a new technological pathway for addressing scale-related challenges in various industries.