Scientists who test for potassium have discovered a state of new physical substances that can exist in both solid and liquid form.
It is said that the study examines whether there is a pronounced state of matter, or whether atomic structures represented the transition between two stages – solid, liquid and gas.
The tests were carried out using "simple metal", for example, using high pressures and temperatures using strong computer simulations used to explore what was known as the fused state of the chain.
Experts at the University of Edinburgh believe that more than half of the other elements, including sodium and bismuth, are able to survive in this new country.
Dr Andreas Hermann, from the University of Physics and Astronomy School, led a study published in the Proceedings magazine of the National Academy of Sciences.
He said: "Potassium is one of the easiest metals we know, but if you squeeze it, it is very complex.
“We have shown that this unusual but stable condition is a semi-solid and partial fluid.
"This unusual recovery in other materials could be all kinds of applications."
The research was supported by the European Research Council and the Research Council for Engineering and Physical Sciences, and the work was carried out in collaboration with scientists from Xi's Jiantong University in China.