hydrogen
Reaction mechanism of hydrogen plasma cleaning
Plasma chemical reaction is the reaction that occurs in the discharge gas. For the gas under normal temperature and pressure, the high-temperature accelerated electrons accelerate the ions to give energy to the material, and the material is dissociated into the state of anion and cation. When gas ionizes to generate electrons, positive ions generally combine in a short time and return to the neutral molecular state. Part of the energy of electrons and ions generated in this process is consumed in different forms such as electromagnetic waves. Free radicals are…
PNAs: is the local structure of liquid water tetrahedral structure composed of hydrogen bond network?
Water is the material for human survival and widely exists in nature. The research on water has always been the frontier and hotspot of scientific research and popular science. X-ray absorption spectroscopy can be used to study the local structure of water. X-ray absorption spectrum uses X-ray to excite the inner electrons of atoms to the unoccupied state. Its spectral characteristics are closely related to the microstructure, so it can be well used to characterize the local structure of substances For a long time, the local structure of water has…
Dr. China at the University of California turned hydrogen atoms into quantum sensors with unprecedented resolution
Recently, a team from the University of California at Irvine spent two years building a femtosecond terahertz laser system in the laboratory and successfully combined this laser system with the laboratory’s low-temperature scanning tunneling microscope, The world’s first femtosecond terahertz scanning tunneling microscope system with high repetition rate (1GHz) was completed Recently published in Science The results of the last paper come from this system Figure | Wang Likun (source: Wang Likun) The world’s first femtosecond terahertz scanning tunneling microscope system with high repetition rate (1GHz) Terahertz scanning tunneling microscopy…
