Journal #6 High temperature piezoelectric materials
There are roughly 200 kinds of piezoelectric materials in the world. However, only a few of them are used to make products or researched. Because the piezoeletric materials have so many distinctive properties different from each other, like humans :)
Today, in the article that I've read is a new face; High temperature piezoeletric materials made by Dr. Tim Comyn and Dr Tim Stevenson in Professor Bells Group. This material is unique in that it can be exposed to extreme environmental conditions such as high temperature or high pressure. And thanks to this property, the range of application is extended and also the potential market.
The reason of its high stability in extreme environment is attributed to its components. There are some materials including bismuth and iron and these make the piezoeletric material tolerent to extreme external conditions.
This development is said to be overcome the failure of current technology, according to Prof. Bell. The stronger the piezoeletric materials, the broader and utilizable the sensors using them. For example, people can check the internal condition of gas turbine or huge oil transfering tank with sensors made up of this strong piezoeletric material.
What I'm interested in and wondering is the way this new material came out. Surely, the new compositions of piezoeletric materials are vigorously being developed by researchers. I'd like to know how they choose new elements or how they plan experiments.
Through this article, I could realize there should be a good understanding of elements and their properties to do a research about piezoeletric materials. And this process is really important in making the piezoeletric technology be developed further in the future.
*Bismuth is a chemical element with symbol Bi and the atomic number is 83. It is classified into post transition metal and has poor mechnical strength.
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