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.

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:

As a telescopic ablation electrode, tungsten needle for minimally invasive surgery has the characteristics of super sharp and high melting point, so that it can quickly cut the skin and various soft tissues, with less bleeding and thermal damage. Therefore, it is more conducive to postoperative wound healing for patients. Such a telescopic ablation electrode produces very little smoke when working at extremely low power, allowing doctors to have a good surgical field of vision while reducing physical harm from inhaling smoke.