Core shell nanoparticle based liquids/ferrofluid dielectric properties

In summary, based on the credible sources and research available, it appears that this type of ferrofluid with high dielectric constant does exist, but more information and expert opinions would be helpful in fully understanding its potential applications.
  • #1
artis
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I found a few research papers with regards to a special type of microsized/nano particles mixed within an oil creating a special sort of ferrofluid or liquid which among other things has the property of extremely (gigantic) high dielectric constant.
Now such a fluid would be ideal for a variable capacitor which would help me in my current experiments but the question is is this real or not?
The research seems to be published in credible sites.

https://www.ncbi.nlm.nih.gov/pubmed/29624504
https://iopscience.iop.org/article/10.1088/1361-6528/aabc4e
https://www.researchgate.net/publication/324265178_Magnetically_Tunable_Liquid_Dielectric_with_Giant_Dielectric_Permittivity_based_on_Core-Shell_Superparamagnetic_Iron_Oxide

As well as others, and I have found similar research with regards to "core shell particles"
It would be nice to hear any more information on this or some expert opinion.PS. I tried to contact the Indian University where one of the researchers is located but so far out of luck because the person at the other end had a rather terrible english.
 
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  • #2
Based on the research papers you have cited, it appears that this type of fluid does indeed exist. The research papers describe experiments that were done using ferrofluids with nanoparticles mixed in oil to create a liquid with a high dielectric constant. It is likely that such a fluid could be used in variable capacitors, though further experimentation would be needed to determine whether or not this is feasible. However, it should be noted that the research papers are focused on the properties of the ferrofluid itself, and not necessarily its use in variable capacitors, so it may not be possible to determine whether or not it is suitable for this purpose without further experimentation.
 

1. What are core shell nanoparticles?

Core shell nanoparticles are particles with a core made of one material surrounded by a shell made of another material. These nanoparticles have unique properties due to their size and composition, making them useful in a variety of applications.

2. How are core shell nanoparticles used in liquids/ferrofluids?

Core shell nanoparticles can be dispersed in liquids to create ferrofluids, which are liquids with magnetic properties. The nanoparticles align themselves in the presence of a magnetic field, allowing the ferrofluid to be manipulated and controlled. This makes them useful in applications such as sensors, drug delivery, and lubricants.

3. What factors affect the dielectric properties of core shell nanoparticle-based liquids/ferrofluids?

The dielectric properties of core shell nanoparticle-based liquids/ferrofluids can be affected by a variety of factors, including the size and composition of the nanoparticles, the concentration of nanoparticles in the liquid, and the strength of the applied magnetic field. Other factors such as temperature and pH can also play a role.

4. What are the potential advantages of using core shell nanoparticle-based liquids/ferrofluids?

Using core shell nanoparticle-based liquids/ferrofluids can have several potential advantages, including improved control and manipulation due to their magnetic properties, increased stability and dispersibility in liquids, and the ability to tailor their properties for specific applications.

5. What are some current and potential future applications of core shell nanoparticle-based liquids/ferrofluids?

Core shell nanoparticle-based liquids/ferrofluids have a wide range of current and potential future applications, including in biomedicine, electronics, and energy storage. Some specific examples include targeted drug delivery, magnetic data storage, and energy harvesting from waste heat.

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