Do you know how to prepare tungsten needle efficiently? The experts have proposed a method for preparing tungsten needles with the advantages of high degree of automation, good repeatability and high efficiency.

It has been reported that only nano tungsten needle having sharp tip and single atom at the apex can provide stable and reliable atomically resolved imaging for applications of scanning tunneling microscopy (STM). Well, do you know how to prepare such a nano tungsten needle? Differing from the traditional methods, the experts have proposed a new method for preparing nano tungsten needles:

The quality of tungsten needle is directly related to the detection capability of the scanning electron microscope (STM). The size, shape and chemical identity of the tungsten tip affect not only the resolution and shape of the STM image, but also the electronic state of the measurement. Therefore, the preparation of tungsten tip is particularly important. And it had better to obtain a tungsten tip with a specific radius of curvature.

Tungsten needle is widely used as a probe for applications of scanning tunneling microscope (STM) - an instrument for imaging surfaces at the atomic level that is recognized as one of the world's top ten scientific and technological achievements in the 1980s.