Member of the Nuclear Science and Technology Group of the 6th and 7th Academic Review Group of the State Council Academic Degrees Committee, Vice Chairman of China Radiation Physics Society, Vice Chairman of Beijing Nuclear Society, Director of Solid Nuclear Track Professional Committee of China Nuclear Physics Society, Deputy Director of Radiation and Environmental Biophysics Professional Committee of Biophysics Society, and Member of Academic Committee of Lanzhou Heavy Ion Accelerator National Laboratory. Executive vice chairman of the International Committee on Nuclear Track and Radiation Measurement, member of the International Committee on Radiation Effects of Insulators, and member of the International Committee on Surface Modification of Ion Beam Materials. He is the chairman of the16th International Conference on Radiation Damage of Insulators, and also the organizing committee of the International Summer School of Advanced Nuclear Energy System Materials Challenge.
As the person in charge, he presided over the 973 project "Study on Material Damage Caused by Intense Ion Irradiation", the national special group project "Study on equivalence of rapid screening of fusion reactor materials based on high-energy particle irradiation", the key project of National Natural Science Foundation "Preparation of nanopores by ion track method and study on energy transformation and material transport" and "Basic research on application of high-energy ion technology to radiation health assessment and protection". In recent years, based on the basic principle of the interaction between ion beam and matter and the new energetic ion technology, some innovative research results have been made in ion implantation and modification of ion beam materials, irradiation damage of energetic ion materials, biophysics of energetic ion radiation, and application of ion beam technology in nanotechnology.
The energy loss, range and damage of high-energy ions, the formation mechanism and track evolution of heavy ion damage are systematically studied. The generation and migration of radiation damage defects, annealing, defect recombination and recrystallization, element separation, bubble formation and aggregation, microstructure and surface morphology changes, swelling and erosion in nuclear energy-related materials, especially nano-structured materials, such as nano-grains, nano-porous, nano-multilayer films and nano-layered materials, are systematically and deeply studied.
The preparation, properties and applications of nanopores based on high-energy ion track etching method were first proposed and developed in China. Specially shaped nanopores were controllably prepared, and their electric field distribution, current and voltage characteristics in electrolyte solution were systematically studied theoretically and experimentally. Based on this, a nano-current system consisting of a nano-current current source, a pulse generator and an electro-osmotic pump was prepared. By modifying various DNA, protein and special polymers in nanopores, functional artificial ion channels which respond to pH value, temperature and electrolyte ions individually or in combination are creatively prepared.
The research results have been published in JACS, Advanced Functional Materials, Energy &; He has published dozens of papers in international high-level journals such as Environment Science, Physical Review E, Applied Physics Letters, Journal of Applied Physics and Acta Materials. , and made a special report at international academic conferences such as insulator irradiation effect, surface modification of ion beam materials and solid nuclear track. Among them, the preparation of nanopores by nuclear track method based on ion irradiation damage was rated as "research highlight" by Nature, Nature China and Nature-AsiaMaterials.