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Tungsten is a matte silver-colored metal with the highest melting point of pure metals. Tungsten is more resistant to breakage than diamond and is much harder than steel. It is indicated by the symbol W and has an atomic number of -74. In Mendeleev's periodic table, it is in the sixth group, it has similar properties with the "neighbors" – molybdenum and chromium. It has the unique properties of refractory metal - its strength and ability to withstand high temperatures - that make it ideal …

Shape Memory Polymer belongs to the class of smart materials and are defined as those polymers that have the ability to return from a deformed state (temporary shape) to that original (permanent form) through an external stimulus. By modifying their three-dimensional structure in response to precise external stimuli, shape memory polymers allow the creation of devices with complex and miniaturized morphologies. Although the shape memory metal alloys were the first to be developed, the evo …

Silicon dioxide (SiO2) is a compound of silicon and oxygen, commonly called silica and the elements are linked by the covalent bond. It is one of the components of the sand and can be found naturally in Quartz. It is usually white or colorless and is not soluble in water or ethanol. By associating with minerals, it forms the silicate family. Silicon dioxide (SiO2) has several industrial applications such as an additive in the food industry. Its function is to act as an anti-binder, a …

The fullerenes are constituted by a network formed by 12 pentagons and 20 hexagons, closing the sphere. Each carbon of a fullerene is sp hybridized in the form of a sigma bond (simple bond) with three other carbon atoms, subtracting one electron from each carbon. The most important property of Fullerenes is its high symmetry. In this one, there are 120 symmetry operations, such as axis rotations or reflections in the plane. This makes the C60 molecule the most symmetrical molecule since it …

Holmium is a metalloid of the lanthanide group and like many other rare earth metals that we have already covered in previous posts, holmium has a characteristic bright silver color. It is a fairly soft and considerably malleable metal. It is stable in dry air and at room temperature, although it easily loses stability when making contact with humidity and very high temperatures. It is believed that as with other similar rare earth metals, holmium micron powder does not have a high degre …