NASA plans to use lasers to measure the impact of exhaust gases on the lunar surface during landing, in order to plan lunar landings more effectively

Summary:To filter out infrared light from the driving light source in the extreme ultraviolet lithography (EUVL) light source system, a rectangular grating structure needs to be fabricated on the surface of the collection mirror. However, the collection mirror grating usually undergoes deformation during the manufacturing process, resulting in a decrease in filtering efficiency. The process errors...

Scientists at the City University of New York use tiny nitrogen defects in the atomic structure of diamonds as "color centers" to write data for storage. This technology is published in the journal Nature Nanotechnology and allows for encoding multiple bytes of data into the same nitrogen defect at multiple optical frequencies, without confusing the information content.The common laser based techn...

Recently, in the Future Science City of Hefei City, Anhui Province, the National Major Science and Technology Infrastructure Project and Supporting Projects of Hefei Advanced Light Source announced the start of construction, with a planned land area of approximately 656 acres. The first phase of the project is expected to be completed by September 2028.After completion, it will become an internati...

Research backgroundIn transportation, industrial production, and practical life, icing often brings great troubles, and the most serious is that during the flight of an aircraft, key components once frozen will seriously affect navigation safety.The traditional passive deicing and anti icing strategies for aircraft, such as mechanical vibration and anti freezing liquids, have problems such as inco...

Around the poles, ice accumulated over millions of years can reach depths of several kilometers. The undisturbed deep ice preserves information about the past. The air bags and particles trapped in the ice tell scientists what the atmosphere used to be like. This has aroused great interest among paleoclimatologists in glacier ice cores.By regularly sampling the ice core at its depth, they can reco...