On the 24th, the authoritative football magazine France Football conducted an inventory of football income and came to the following conclusion: Chinese men's football coach Lippi ranks second in income among all coaches.
According to The Paper, in the income statistics of coaches, Manchester United coach Mourinho still ranks first with 26 million euros, and Chinese coach Lippi ranks second.
According to the data given by France Football, Lippi's salary plus commercial sponsorship contracts, the total income can reach 23 million euros.
Atletico Madrid coach Simeone ranked third (22 million euros), Guardiola ranked fifth with 20 million euros, and Zidane ranked fourth with 21 million euros. Scientists at home and abroad discover superelastic deformation of diamond at the nanoscale
According to People's Daily, an international joint research team led by Associate Professor Lu Yang of City University of Hong Kong recently made a major breakthrough in the study of the mechanical behavior of diamond at the nanoscale.The study observed for the first time that nanoscale diamonds can withstand unprecedented huge deformation and can quickly return to their original shape. Among them, the local tensile elastic deformation of single crystal diamond samples can reach a maximum of about 9%, which is close to the theoretical elastic deformation limit of diamond.The research results were published in the American Journal of Science on April 20.
As we all know, diamond is the hardest substance in nature.On a macroscopic scale, it is generally considered to exhibit no deformation behavior.The consequence of any extreme attempt to deform the diamond is often brittle fracture before visible deformation is achieved.This also makes it limited in some applications that may be subjected to mechanical deformation.
In order to conduct nanoscale mechanical tests on diamond, a special brittle and hard material, Lu Yang led the research team to design a set of unique nanomechanical experimental methods based on the scanning electron microscope platform, which realized the real-time observation of single crystal and polycrystal by electron microscope.Diamond nanoneedle samples (prepared by Zhang Wenjun's laboratory at City University of Hong Kong) were subjected to quantitative compression-bending tests.Experimental results show that both single crystal and polycrystalline diamond nanoneedles can achieve large deformations that are tens of times higher than those of macroscopic diamonds and can be fully restored in a very large range.
In order to accurately analyze its deformation, the Nanomechanics Laboratory led by Professor Subra Middot; Suresh of the Massachusetts Institute of Technology and Daoming Researcher conducted a simulation analysis of the experimental results to confirm the elasticity of the single crystal diamond nanoneedle on the stretched sideThe deformation amount reaches about 9%, and the corresponding strength is also close to its theoretical limit.For the macroscopic diamond (diamond), such deformation is unprecedented and unimaginable, the researchers said.
Subsequently, Lu Yang and his collaborators used a high-resolution transmission electron microscope to analyze the microstructure of the samples before and after the fracture and corresponding theoretical simulations at the atomic scale to explore the mechanical deformation mechanism of nanoscale diamonds.
According to reports, the discovery of the superelastic behavior of diamond at the nanoscale will help to further expand the use of diamond in biomedical fields such as drug delivery, biodetection, and imaging, as well as in the field of optoelectronic devices, as well as quantum mechanical devices such as nanomechanical resonators and data storage.applications in the field of information technology.Furthermore, the hyperelastic deformation itself offers the potential application of nanostructured diamond in elastic strain engineering.
