Prof. Li Decai was born in Cangzhou, Hebei province in December 1965. He is the professor of Tsinghua University's Department of Mechanical Engineering, doctoral supervisor, associate director of state key laboratory of tribology of Ttsinghua university..

Professor Li receives dozens of honorary titles, including: Distinguished Professor of "Changjiang Scholar” by Ministry of Education, State-level Candidate for for New Century Talents Project, team leader of "Innovative Team Development Plan" of the Ministry of Education, the Government Special Allowance of the State Council owner, 100 leading talents in "Tech Beijing", Science, technology and management talents with outstanding contributions in Beijing, Beijing Teaching masters award, Beijing Outstanding Teacher Award, Special prize of Baogang Excellent Teacher’s Prize and National model teacher.

In 2014, Professor Li participated in the 30th Teachers' Day and the National Education System Advanced Collectives and Advanced Individuals Commendation Conference, and was cordially received by President Xi Jinping and other national leaders.

In 2014, professor Li participated in the 30th Teachers' Day and the National Education System Advanced Collectives and Advanced Individuals Commendation Conference, and was cordially received by President Xi Jinping and other national leaders.

Professor Li has presided over more than 60 research projects at or above the provincial or ministerial level, including the national No. 1 engineering project, the national manned space program, key projects of the national natural science foundation of China, and the national natural science foundation of China. He has won 10 prizes as the first winner at or above the provincial or ministerial level, including two the second prize of national technology invention award, the first prize of the university scientific research outstanding achievement award technology invention award the first prize of Beijing science and technology award. He has published more than 260 related research papers, of which more than 180 were included in SCI and EI sources. Li Decai has also Independently published 3 monographs, participated in the compilation of 1 monograph and 3 textbooks. As the first inventor, he has applied for nearly 200 patents and 99 of them has been authorized, and his patent achievements are widely used in national defense and national economic construction.

For many years, Professor Li has devoted himself to the fundamental theoretical research on the design and control of liquid-magnetic mechatronics system, applications of nanomagnetic liquids in sealing, vibration reduction, sensing, micromechanics, soft robots and biomedicine, research on nanomagnetic fluid dynamics theory, preparation and characterization of nanomagnetic materials, research on the theory and application of magnetorheological fluid, research on the theory and application of modern magnetic technology and MEMS, research on the theory and application of magnetic liquid seal, magnetic seal, magnetic liquid and mechanical combined seal, labyrinth seal, etc. Up to now, he has supervised nearly 20 doctoral students, more than 100 master students.

Books

1. Li Decai, Magical Magnetic Fluid[M], Beijing: China Science Press, 2016.1.

(compilation)

2. Li Decai, The Theory and Applications of Magnetic Fluid Seals [M]. China Science Press, 2010.02.

(compilation)

3. Li Decai, Theory and Applications of Magnetic Fluid [M]. China Science Press, 2003.8.

(compilation).

4. Li Decai, Machine Design Foundation[M], Beijing: China Machine Press, 2014.8.

(Participated in compilation)

5. Li Decai, Mechanical Design[M], Beijing: China Railway Publishing House, 2016.1.

(Participated in compilation)

6. Li Decai, Mechanical Principle Teaching Guidance and Problem Solutions[M], Beijing: China Science Press, 2010.6.

(Participated in compilation)

7. Li Decai, Mechanical Principle[M], Beijing: China Science Press, 2010.3.

(Participated in compilation)

8. Li Decai, The Functional Material Dictionary[M], Beijing: China Science Press, 2002.1.

(Participated in compilation)

Papers

Professor Li has published more than 260 related research papers so far, of which more than 180 papers have been included in SCI and EI. Some representative papers are as follows:

1. Xiao liu, Aisheng Song, Siyu Chen, Qian Li, Rui Sun, Jixian Yang, Decai Li. Conductive mechanism of CNTs enhanced conductive magnetic fluid[J]. Material Letters 252 (2019) 110-113

2. Sun R, Li D. Study on single bubble in acceleration sensor with magnetic fluid[J]. Journal of Magnetism and Magnetic Materials, 2019: 165960.

3. Siyu Chen, Decai Li. Influence of Particle Size Distribution of Magnetic Fluid on the Resistance Torque of Magnetic Fluid Seal[J]. Journal of Magnetics, 2017, 22(4): 605-609

4. Hu Y , Li D , Jin L , et al. Hybrid Allen-Cahn-based lattice Boltzmann model for incompressible two-phase flows: The reduction of numerical dispersion[J]. Physical Review E, 2019, 99(2).

5. Hu Y , Li D , Niu X , et al. Lattice Boltzmann model for the axisymmetric electro–thermo-convection[J]. Computers & Mathematics with Applications, 2019.

6. Hu Y , Li D , Niu X , et al. An immersed boundary-lattice Boltzmann method for electro-thermo-convection in complex geometries[J]. International Journal of Thermal Sciences, 2019, 140:280-297.

7. Yang H , Decai L , Xiaodong N , et al. Fully resolved simulation of particulate flows with heat transfer by smoothed profile-lattice Boltzmann method[J]. International Journal of Heat and Mass Transfer, 2018, 126:1164-1167.

8. Yang H , Decai L , Xiaodong N . Phase-field-based lattice Boltzmann model for multiphase ferrofluid flows[J]. Physical Review E, 2018, 98(3):033301-.

9. Hu Y , Li D , Shu S , et al. A multiple-relaxation-time lattice Boltzmann model for the flow and heat transfer in a hydrodynamically and thermally anisotropic porous medium[J]. International Journal of Heat & Mass Transfer, 2017, 104:544-558.

10. Hu Y , Li D , Shu S , et al. Natural convection in a nanofluid-filled eccentric annulus with constant heat flux wall: A lattice Boltzmann study with immersed boundary method[J]. International Communications in Heat and Mass Transfer, 2017, 86:262-273.

11. Yang Hu, Decai Li, Shi Shu, Xiaodong Niu, Boltzmann simulation for three-dimensional natural convection with solid-liquid phase change[J]. International Journal of Heat and Mass Transfer, 2017, 113:1168-1178.

12. Hu Y , Li D , Shu S , et al. Lattice Boltzmann simulation for three-dimensional natural convection with solid-liquid phase change[J]. International Journal of Heat and Mass Transfer, 2017, 113:1168-1178.

13. Zhenkun Li, Decai Li, Yibiao Chen, Yilong Yang and Jie Yao. Influence of Viscosity and Magnetoviscous Effect on the Performance of the Magnetic Fluid Seal in Water Environment[J]. Tribology Transactions, 2017:0-0.

14. Jie Yao, Yibiao Chen, Zhenkun Li, Tianqi Zhang and Decai Li. A novel accelerometer based on the first kind of ferrofluid levitation principle[J]. Smart Material Structures, 2016, 25(9):095016.

15. Jie Yao Jianjun Chang, Decai Li , Xiaolong Yang. The dynamics analysis of a ferrofluid shock absorber[J]. Journal of Magnetism & Magnetic Materials, 2016, 402:28-33.

16. Jie Yao, Chuan Huang, and Decai Li. Research on a Novel Ferrofluid Inertial Sensor With Levitating Nonmagnetic Rod[J]. IEEE Sensors Journal, 2016, 16(5):1130-1135.

17. Jie Yao, Shuo Liu, Zhenkun Li, and Decai Li. A Novel Ferrofluid Inclinometer Exploiting a Hall Element[J]. IEEE Sensors Journal, 2016, 16(22):7986-7991.

18. Hu Y , Li D , Shu S , et al. Finite-volume method with lattice Boltzmann flux scheme for incompressible porous media flow at the representative-elementary-volume scale[J]. Physical Review E, 2016, 93(2):023308.

19. Yang Hu, Decai Li, Shi Shu, Xiaodong Niu. Immersed boundary-lattice Boltzmann simulation of natural convection in a square enclosure with a cylinder covered by porous layer[J], International Journal of Heat and Mass Transfer, 92,2016:1166-1170.

20. Zhenkun Li, Jie Yao, Decai Li. Research on the Rheological Properties of a Perfluoropolyether Based Ferrofluid[J]. Journal of Magnetism & Magnetic Materials, 2016, 424:33-38.

21. Jun Xie, Decai Li, Yansi Xing. Parameters optimization of magnetic fluid micro-pressure sensor[J]. Sensors & Actuators A Physical, 2015, 235:194-202.

22. Jun Xie, Decai Li, Yansi Xing. The theoretical and experimental investigation on the vertical magnetic fluid pressure sensor[J]. Sensors & Actuators A Physical, 2015, 229:42-49.

23. Jun Xie, Decai Li, Yansi Xing. The theoretical and experimental research of the horizontal magnetic fluid pressure difference sensor[J]. Sensors & Actuators A Physical, 2015, 236:315-322.

24. Yang Hu, Decai Li, Shi Shu, Xiaodong Niu. Study of multiple steady solutions for the 2D natural convection in a concentric horizontal annulus with a constant heat flux wall using immersed boundary-lattice Boltzmann method[J]. International Journal of Heat and Mass Transfer, 2015, 81: 591-601.

25. Yang Hu，Decai Li，Shi Shu, Xiaodong Niu, Modified momentum exchange method for fluid-particle interactions in the lattice Boltzmann method[J]. Physical Review E, 2015, 91, 033301.

26. Yang Hu, Decai Li, Shi Shu, Xiaodong Niu. An efficient smoothed profile-lattice Boltzmann method for the simulation of forced and natural convection flows in complex geometries[J]. International Communications in Heat and Mass Transfer. 2015, 68: 188-199.

27. Yang Hu，Decai Li，Shi Shu, Xiaodong Niu. Simulation of steady fluid-solid conjugate heat transfer problems via immersed boundary-lattice Boltzmann method[J]. Computers and Mathematics with Applications, 2015, 70: 2227-2237.

28. Hongchao Cui, Decai Li, Zhili Zhang. Preparation and characterization of Fe3O4 magnetic nanoparticles modified by perfluoropolyether carboxylic acid surfactant[J]. Materials Letters ，2015,143: 38-40.

29. Leping Qian, Decai Li, and Jun Yu. Study of the second order levitation force in the magnetic fluid accelerometer[J], Sensors Journal, IEEE, 2015, 15(12): 6805-6810.

30. Yan Huang, Decai Li , Feng Li, et al. Transmitted light relaxation and microstructure evolution of ferrofluids under gradient magnetic fields[J]. Optics Communications, 2015, 338: 551-559.

31. Jie Yao, Decai Li. Research on the linearity of a magnetic fluid micro-pressure sensor [J]. Sensors and Actuators A: Physical, 2015, 229: 36-41.

32. Jie Yao, Decai Li. Research on a novel magnetic fluid micro-pressure sensor [J]. Measurement Science and Technology, 2015, 26(7): 075101.

33. Junming Li, Jian Li, Longlong Chen, Yueqiang Lin, Xiaodong Liu, Xiaomin Gong, Decai Li. Cobalt surface modification during g-Fe2O3 nanoparticle synthesis by chemical-induced transition[J]. Materials Chemistry and Physics, 2015, 151: 43-49.

34. Junming Li, Jian Li, Longlong Chen, Yueqiang Lin, Xiaodong Liu,Xiaomin Gong, Decai Li. Characterization and magnetism of Co-modified γ-Fe2O3 core–shell nanoparticles by enhancement using NaOH[J]. Journal of Magnetism and Magnetic Materials, 2015, 374: 157–163.

35. Deng M, Liu DH, Li DC. Magnetic field sensor based on asymmetric optical fiber taper and magnetic fluid[J]. Sensors and Actuators A, 2014, 211: 55-59.

36. Longlong Chen, Jian Li, Yueqiang Lin, Xiaodong Liu, Lihua Lin, Decai Li. Preparation of Composite Nanoparticles of Fe–Zn Bioxide Using Surface Modification and Their Subsequent Characterization[J]. IEEE TRANSACTIONS ON MAGNETICS, 2014, 50(7): 2200106.

37. Longlong Chen, Jian Li, Yueqiang Lin, Xiaodong Liu, Junming Li, Xiaomin Gong,  Decai Li. Preparation of γ-Fe2O3/ZnFe2O4 nanoparticles by enhancement of surface modification with NaOH[J]. Chemistry Central Journal, 2014, 8:40.

38. 52.J. Li, X. M. Gong, Y. Q. Lin, X. D. Liu, L. L. Chen, J. M. Li, H. Mao, D. C. Li. Investigation into loss in ferrofluid magnetization[J]. AIP ADVANCES 4, 2014, 077123.

39. Yang Wenming, Li Decai, Feng Zhenhua. Hydrodynamics and energy dissipation in a ferrofluid damper[J]. Journal of Vibration and Control, 2013, 19(2)：183-190.

40. Deng M, Sun XK, Han M, Li DC. Compact magnetic-field sensor based on optical microfiber Michelson interferometer and Fe3O4 nanofluid[J]. APPLIED OPTICS, 2013, 52(4): 734-741.

41. Longlong Chen, Jian Li , Yueqiang Lin, Xiaodong Liu, Lihua Lin, Decai Li. Surface modification and characterization of g-Fe2O3 nanoparticles synthesized by chemically-induced transition[J]. Materials Chemistry and Physics, 2013, 141: 828-834.

42. Jian Li, Xiaoyan Qiu, Yueqiang Lin, Longlong Chen, Xiaodong Liu, Decai Li. Large magneto-optical birefringence of colloidal suspensions of α-FeOOH goethite nanocrystallites[J]. Chemical Physics Letters, 2013, 590: 165–168.

43. Li Decai, Chun Ruan, et.al. Study on the seal of tank panoramic sight with magnetic fluid[C]. Physics Procedia, 2010, 9: 248-253.

44. Decai Li, He X, Zhang Z. A study of static magnetic fluid seal of large flange diameter[J]. Magnetohydrodynamics, 2008, 44(1):75-82.

45. Decai Li, Haiping Xu, Xinzhi He et al. Theoretical and experimental study on the magnetic fluid seal of reciprocating shaft[J]. Journal of Magnetism & Magnetic Materials, 2005, 289(289):399-402.

46. Decai Li, Haiping Xu, Xinzhi He, et al. Study on the magnetic fluid sealing for dry Roots pump[J]. Journal of Magnetism & Magnetic Materials, 2005, 289:419-422.

47. Decai Li, Lan H Q, Bai X X, et al. Mechanism of magnetic liquid flowing in the magnetic liquid seal gap of reciprocating shaft[J]. Journal of Functional Materials, 2003, 289:407-410.

48.Li DeCai, Hao Du. Major Problems and Solutions in Applications of Magnetic Fluid Ｒotation Seal[J]. Journal of vacuum science and technology, 2008,38 (07) : 564-574.49

49.Cheng YanHong, Li Decai, Dai RongKun. Experimental analysis of starting torque of perfluoro polyethers-based magnetic fluid seal [J]. Journal of Harbin engineering university, 2017,38 (8)

50. BaiLe Zhang Zhili Xu Longfei, DiNanNan, de-cai li. Synthesis of -Bi2O3 nanowires by solution precipitation metod and optical properities [J]. Journal of functional materials, 2017 (11) : 13, 11103-11107.

51. Qian leping, li decai. Theoretical and experimental study of a novel magnetic fluid inertial sensor [J]. Journal of instrumentation and instrumentation, 2015,36 (3) : 507-514.

52. He xin-zhi, li decai, hao rui-shen. The Influence of Magnetic Fluid Yield Stress

on the Performance of Magnetic Fluid Seal [J]. Journal of ordnology and engineering, 2015, 1:175-181.

53. Yang xiaolong, li decai, he xinzhi, zhang huitao. Numerical and experimental study of large gap magnetic liquid and labyrinth alternating combination seal [J]. Journal of mechanical engineering, 2014,50 (20) : 175-179.

54. Yang xiaolong, li decai, Yang wenming, xing feifei, li qiang.Design of Magnetic Circuit and Simulation of Magnetic Fluid Sealing [J]. Journal of vacuum science and technology, 2012,32 (10) : 919-922.

55. Li decai. Design and Experiment of Magnetic Fluid Seal of Compressor Piston Rod [J]. Journal of mechanical engineering, 2011,47 (10) : 133-138.

56. Li decai, zhang xiumin, gao xin.Study on Magnetic Fluid Static Seal of Large Gap

[J]. Journal of mechanical engineering, 2011,47 (16) : 193-198.

57. Li decai, li jianling, cui hongchao. Preparation and characterization of Fe3O4 / Au  nano particles [J]. Functional materials, 2011,42 (8) : 1429-1432,1435.

58. Li decai, Yang wenming. Experimental Study of Static Sealing Structure with Large Diamter and Sealing Gap Using Magnetic Fluid [J]. Acta armatae armatae, 2010,31 (3) : 355-359.

59. He xin-zhi, li decai, sun ming-li et al. Experimental Study of Static Sealing of Large Flanges with Magnetic Fluid [J]. Journal of vacuum science and technology, 2008,28 (2) : 179-181.

60. He xin-zhi, li del-cai, LAN hui-qing et al. Comparison of Anti-pressure Capacity for Two Different Structures of Magnetic Fluid Seals[J]. Acta scientia technica sinica, 2005,25 (3) : 238-240.

61. Li delcai, xu haiping, liao ping, cui hairong. Study on the breaakway to rque of magnetic fluid sealing at low temperature and Iarge diameter [J]. Functional materials 2004,35:566-568.

62. Li decai, LAN huiqing, bai xiaoxu, wang zhishan. Mechanism of magnetie Iiquld flowing in the magnetic Iiquld seal gap of erciProcating shaft [J]. Journal of Beijing university of aeronautics and astronautics, 2003,29 (2) : 185-188.

63. Li Decai, Lan huiqing, Bai Xiaoxu, et al. Mechanism of magnetic liquid flowing in the magnetic liquid seal gap of reciprocating shaft[J].Jorunal of Functional Materials, 2003,34(2): 151-152.

64. Li Decai, Hong Jianping, Yang Qingxin. The study on the magnetic fluid sealing of dry roots pump[J]. Chinese Journal of Vacuum Science and Technology, 2002,22(4): 317-320.

65. Li Decai, The application research on ferromagnetic fluid lineal seal[J]. Jorunal of Functional Materials, 1999,30(6): 610-612

66. Li Decai, Yuan Zuyi, Jiang Yongli, et al. Theory study of the anti-pressure formula of magnetic fluid reciprocating motion seal[j]. Journal of Mechanical Engineering, 1998,34(2): 14-19.

patents

As the first inventor, Professor Li Decai has applied for nearly 200 patents and has granted 99 patents. The patent results are widely used in national defense and national economic construction.

1. Second prize of National Technology Invention Award in 2019 (ranked first)

2. Second prize of National Technology Invention Award in 2012 (ranked first)

3. State-level candidate for New Century Talents Project

4. Distinguished Professor of "Changjiang Scholar” by Ministry of Education

5. First prize of Technical Invention Award for Outstanding Achievements in Scientific Research of Colleges (ranked first)

6. First prize of science and technology of Beijing (ranked first)

7. First prize of Beijing invention patent award (ranked first)

8. Patent "Low-temperature large diameter magnetic fluid sealing arrangement" won the second prize of Beijing invention patent (ranked first)

9. Patent "Assembly method of the sealing component in the magnetic liquid sealing device" won the third prize of Beijing invention patent (ranked first)

10. Third Prize of Science and Technology Progress of Hebei (ranked first)

11. General Equipment Department of the Chinese People's Liberation Army-Third Prize for Scientific and Technological Progress of the Army (ranked third)

12. Patent "Assembly method of seal assembly in magnetic liquid sealing device" won the Chinese Patent Excellence Award (ranked first)

13. Patent "Low-temperature large diameter magnetic fluid sealing arrangement" won the 11th China Patent Excellence Award (ranked first)

14. Patent "Low-temperature large diameter magnetic fluid sealing arrangement" won the Golden Bridge Award of the 6th China Technology Market Association (ranked first)

15. China International Industry Fair Bronze Award (ranked first)

16. The patent "Low temperature large diameter magnetic liquid sealing device" won the Science and Technology Innovation Award of China International Industry Fair (ranked first)

17. Young and middle-aged experts with outstanding contributions

18. Team leader of "Innovative Team Development Plan" of the Ministry of Education

19. the Government Special Allowance of the State Council owner

20. 100 leading talents in "Tech Beijing"

21. Science, technology and management talents with outstanding contributions in Beijing

22. National model teacher

23. Famous teacher in Beijing

24. Famous teacher in Beijing comprehensive of higher learning

25. Special prize of Baogang Excellent Teacher’s Prize

26. Beijing Educational Teaching Achievement (Higher Education) Second Prize (ranked fourth)

27. Certificate in Teaching English in Science and Engineering at the University of Manchester

1. Adjunct Professor, Belarusian State University of Science and Technology and many other universities

2. Member, International Magnetic Fluid Academic Committee

3. Senior Member, Chinese Mechanical Engineering Society

4. Director, Magnetics and Magnetic Materials Society

5. More than a dozen domestic and foreign SCI,EI publications long-term invited reviewers