Vehicle collision energy absorbance with magnetorheological or electrorheological material
US-9827936-B2 · Nov 28, 2017 · US
Magnetic surfaces and uses thereof
US11302467B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11302467-B2 |
| Application number | US-201716087742-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 21, 2017 |
| Priority date | Mar 28, 2016 |
| Publication date | Apr 12, 2022 |
| Grant date | Apr 12, 2022 |
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- Title
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Abstract
Official abstract text for this publication.
Modified surfaces of the present disclosure include a surface or substrate material, a magnetic field, which may be generated through the use of a magnet placed at a distance beneath the surface or substrate, or placed above the surface or substrate, or through the use of a magnetic surface or substrate, and a magnetic fluid, such as ferrofluid or ferrogel, deposited in a layer on the top of the surface or substrate. The modified surfaces may be icephobic. In addition, a droplet of liquid placed on the modified surface can be manipulated through placement of a local heat source in proximity to the droplet, without contacting the droplet.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for improving icephobicity of a material, comprising: depositing a layer of magnetic fluid on a surface of the material, wherein the magnetic fluid is an oil-based ferrofluid; and placing a magnet in proximity to the surface, wherein the magnet produces a magnetic field that contacts the layer of magnetic fluid, and wherein the magnetic field holds the layer of magnetic fluid on the surface to coat the surface, and wherein the layer of magnetic fluid on the surface of the material improves icephobicity of the material due to immiscibility of water with the layer of magnetic fluid and attraction of the layer of magnetic fluid to the magnet. 2. The method of claim 1 , wherein the magnet is placed above or beneath the surface. 3. The method of claim 1 , wherein the layer of magnetic fluid has a thickness of about 10 nm to about 10 mm. 4. The method of claim 1 , wherein the magnetic field has a strength of about 1 mT to about 10 T.
Assignees
Inventors
Classifications
- H01F1/447Primary
characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids (electrorheological fluids C10M171/001) · CPC title
Coated nanoparticles, e.g. nanoparticles coated with organic surfactant · CPC title
from liquids · CPC title
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Frequently asked questions
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- What does patent US11302467B2 cover?
- Modified surfaces of the present disclosure include a surface or substrate material, a magnetic field, which may be generated through the use of a magnet placed at a distance beneath the surface or substrate, or placed above the surface or substrate, or through the use of a magnetic surface or substrate, and a magnetic fluid, such as ferrofluid or ferrogel, deposited in a layer on the top of th…
- Who is the assignee on this patent?
- Univ Houston System
- What technology area does this patent fall under?
- Primary CPC classification H01F1/447. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 12 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).