On September 29, 2019, Professor Cao, from Nanjing university and Professor Wang from Renmin university of China, visited our school for an academic visit, at the invitation of Prof. Feng Shi, the State Key Laboratory of Chemical Resource Engineering, and made speech entitled biological macromolecule material mechanics: from micro to macro and print from the interface to the multicomponent 3 d print academic report ,respectively.
In his report biological macromolecule material mechanics :from micro to macro, professor Cao introduced the following contents from the perspective of the abundant mechanical properties of biological materials in nature.(1) Elastic protein of biomaterials is the main structural unit of bearing force, and its mechanical properties determine the mechanical properties of the whole material.(2) With the development of single molecular force spectroscopy based on atomic force microscopy, we can study the mechanical properties of natural and synthetic polymers at the single molecular level.(3) Inspired by the mechanical structure of proteins, the idea of regulating the mechanical properties of biomolecular materials through metal coordination bonds and mechanical dynamic chemical bonds was proposed .Its report mainly introduces the idea that the characterization of the micro-mechanical properties can lay a foundation for the mechanical design of macro-materials.
In his report from interface printing to multi-component 3D printing, professor Wang explained the principle of printing technology from the aspects of interface theory and bionics, and introduced the application of bio-printing technology in future life sciences .The report mainly includes the following three aspects: (1) Inspired by spider silk production, a bio-3d printing technology that can be continuously printed with multiple components was developed in imitation of spider silk sac.(2) Continuous printing of multi-component hydrogel 3d structure and hollow hydrogel fiber is realized by using this technology to realize vascular 3d hydrogel structure.(3) By strengthening the mechanical properties of hollow hydrogel fibers, the hydrogel structure resembling vascularization made a major breakthrough in terms of elasticity and toughness, and was successfully connected to the rabbit carotid artery .This technology can realize multi-component forming and hollow vascularized structure printing, which provides an expandable technology platform for the development of integrated artificial organ printing technology.
After the report, teachers and clas**ates in the meeting discussed and exchanged thoughts and ideas on the report enthusiastically with Professor Cao and Professor Wang.
Personal profile of professor Cao:
Professor Cao, doctoral supervisor, school of physics, Nanjing university, is engaged in the research of physical and mechanical properties of biomolecular materials. 1997-2001 bachelor degree in polymer department, school of chemistry and chemical engineering, Nanjing university;2001-2004 studied in the department of macromolecule, school of chemistry and chemical engineering, Nanjing university, with master's degree (supervisor: professor Jiang Xiqun );2004-2010 doctoral and postdoctoral research in the department of chemistry, university of British Columbia, Canada ( supervisor; Prof. Li Hongbin). Over 90 papers have been published in Nat. Chem., Nat. Mater., Nat. Nanotech., Nat.Comm., JACS, Angew. Chem., Phy. Rev. Lett Won the scholarship of excellent self-funded overseas students of China scholarship council (2008), the new century talents project of the Ministry of Education (2011), the C6 young scientist award of the international pure and applied physics association (2014), the outstanding youth fund project of the national natural science foundation of China (2015) and the young scientist award of Nano Research (2018).
Personal profile of professor Wang:
Professor Wang Yapei, Doctoral supervisor, department of chemistry, Renmin university of China .He graduated from the college of chemistry of Jilin university in 2004 and was recommended to the department of chemistry of Tsinghua university in the same year. In 2009, he obtained the doctor of science degree .From 2009 to 2011, he was a postdoctoral researcher in the department of chemistry of the university of north Carolina at chapel hill, during which he mainly studied the preparation of fluorine-containing anti-fouling coatings and polymer particles. In February 2012, he joined the department of chemistry of renmin university of China as a special researcher and doctoral supervisor. In August 2015, he was promoted to professor .At present, the main research direction is the preparation of polymer thermal materials and interfacial micro-nano structures, and the development of their applications in the field of sensing and biomedicine .In 2012, he was selected to the new century outstanding talents support program of the Ministry of Education; in 2014, he was awarded the outstanding youth fund of the national natural science foundation of China; in 2014, he was awarded the youth chemistry award of the Chinese chemical society; in 2017, he was selected to the Yangtze river scholars young scholars award program of the Ministry of Education; in 2018, he was awarded the outstanding youth fund of the national natural science foundation of China.