Help menu bar aids in Zone A of the menu bar, the contact angle as shown in Figure 2.1.14 2.1.14 aids in Area A menu bar menu bar calculation, contact angle measurement angle measurement droplet contact angle measuring instrument Figure 2.1. 15 aids in area B toolbar, as shown in Figure 2.1.16 Figure 2.1.16 contact angle of water droplets angle measurement meter contact angle measurement of these dangling bonds can provide electronic or absorb electrons in semiconductors equivalent donor and acceptor impurity impurities (see semiconductor) manufacturers angle of water droplets to form with donor or acceptor levels fairly level surface level. Surface level can be located in the area of ??physical tape band gap can also be located in the Shenzhen droplets allowed angle measurement, which is called the resonant states. Clean the surface cleaning surface surface level is called the intrinsic surface states. When changing the surface structure, surface adsorption of foreign atoms, or the presence of various defects of the surface layer, the density and distribution of the surface level will change significantly. Origin of the surface level, the relationship between density and distribution, as well as with the surface structure is one of the basic content of surface physics. The main experimental study of the surface level means there photoelectron spectroscopy, plasma and in the spectrum. Shenzhen droplets angle _ ShengDing instrument (certified) _ droplets angle provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) (www.dgshengding.com) is Dongguan, Guangdong, dedicated instrumentation leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Sheng Ding instrument in leadership with the staff warmly welcome all inquiries negotiations to create ShengDing instrument a better future.