Song Yanlin research group, Institute of chemistry, Chinese Academy of Sciences: a series of important research progress in the field of nanomaterial printing and patterning

In recent years, the research group of song Yanlin, Institute of chemistry, Chinese Academy of Sciences, has carried out in-depth and systematic basic research in the field of nano material printing and patterning by using nano green printing technology They print on solid surface and construct accurate and controllable three-dimensional micro structure, break through the precision limit of traditional printing technology, realize the printing of micro nano scale fine pattern and controllable assembly of nano functional materials, and develop the application in the field of printing electronics and wearable devices Based on the droplet interface behavior control and the printing preparation of functional devices, a series of important research progress has been made The research results have been published in nature commun., SCI Adv., angel Chem Int ed., adv.mater., J am Chem SOC And other important academic journals Brief introduction of research group of researcher song Yanlin the research group of researcher song Yanlin focuses on the major needs of the country and the industry, takes the basic scientific issues in printing and printing as the breakthrough point, takes the development idea of "green, functional, three-dimensional and device" leading the printing industry as the main line, and leads the research on innovation and integration of nano materials and printing technology The main research directions of the research group include: (1) basic research of nano green printing To carry out the research on the behavior control of droplet spreading, fusion, transfer and volatilization shrinkage on the surface of materials, to break through the basic frontier scientific problems in printing and printing, to develop a new concept green printing manufacturing method with solid, liquid and gas as templates, to achieve high-precision patterning of different functional nanomaterials and the preparation of functional devices (2) Green printing materials and technology Carry out research and development of green printing technology and industry research, such as green printing plate materials, green plate making technology, environmental friendly printing ink, green digital finishing and efficiency enhancing materials and technology, to lead the new development of green printing industry (3) Printing electronic materials and technology Focus on the construction of nano green printing electronic ink, conductive equipment, production line and the application of the technology in RFID and other fields (4) Printed photon materials and technology Photonic crystal materials are known as "optical semiconductors" because of their ability to regulate the propagation of photons, and their research and application have been widely concerned Aiming at the batch preparation and application of photonic crystal materials, the research group carried out the research on the application of printing technology in the field of photonics The main members of the research group include Li Mingzhu, Zhou Haihua, Zhang Xingye, Yang Ming, Wang Xupeng, he min, Li Lihong and Jiang Kejian About researcher song Yanlin, researcher of Institute of chemistry, Chinese Academy of Sciences, doctoral supervisor, director of Key Laboratory of green printing In 1989 and 1992, he obtained his bachelor's degree and master's degree from the Department of chemistry of Zhengzhou University; in 1996, he obtained his doctor's degree from the school of chemistry and molecular engineering of Peking University; in 1996-1998, he was engaged in postdoctoral research in the Department of chemistry of Tsinghua University; in 1998, he entered the Institute of chemistry of Chinese Academy of Sciences In 2006, he won the National Science Fund for Distinguished Young Scholars and was finally awarded "excellent" He is now a distinguished professor of Changjiang Scholar of the University of Chinese Academy of Sciences, director of Beijing Research Center of green printing engineering technology for nanomaterials, executive director of China Society of materials research, China Printing Technology Association, China Vacuum Society, China Computer Industry Association, director of China photosensitive society, China micron nanotechnology Society, vice president of China particle society, and international electrician Expert of printing electronic working group of the association, editorial board member of scientific reports, Journal of chemistry and other academic journals He has been engaged in the research of photoelectric functional materials, nano materials and green printing technology for a long time As the chief scientist or project leader, he has presided over over more than 30 major national nano research programs, strategic pilot research programs of Chinese Academy of Sciences and 863 key projects More than 300 papers have been published and cited by others for more than 10000 times, and have been reported as research highlights by ACS, RSC and Asia materials for many times Cutting edge scientific research achievements: a series of important research progress in the field of nanomaterial printing and patterning (1) the research group designed the method of capillary liquid bridge between the template and the substrate By controlling the liquid confined space, the controllable and precise assembly and patterning of particles in the liquid confined space were realized ingeniously For the particles with a single size, the particles are gradually assembled to form an intermediate structure, and then the transition process to the final structure is affected by the viscosity of the system By controlling the viscosity of the system, fine saw tooth and linear assembly structures can be obtained For the liquid with two different sizes of particles, because the liquid is gradually shrinking, the large and small particles are programmed to assemble under the condition of liquid confinement The large particles are first confined, and then assembled together with the small particles as templates By controlling the liquid confinement space and the composition of particles, the fine control of various ordered one-dimensional co assembly structures has been successfully realized The research results were published in German Applied Chemistry (angelw Chem Int ed., 2017, 56, 15348-15352) and the Journal of American Chemical Society (j.am Chem SOC., 2018, 140, 18-21), and were invited to write a review (angelw Chem Int ed., 2017, 57, 2544-2553; small, 2017, 8, 1603217) Figure 1 particle assembly forms zigzag and linear structural patterns (source: angelw Chem Int ed., 2017, 56, 15348-15352) Figure 2 binary particle assembly forms different fine structural patterns (source: J am Chem SOC., 2018, 140, 18-21) (2) in view of the problems of electromagnetic interference between high-density integrated circuits, the research group, in cooperation with the Institute of semiconductors of the Chinese Academy of Sciences, has designed the idea of self shrinking forming of droplets based on group wisdom, so as to naturally form the lowest surface energy in thermodynamics for solutions containing nanoparticles The corresponding state is the shortest connection among all nodes in mathematics, thus realizing the printing and manufacturing of the optimal micro / nano circuit, reducing the electromagnetic interference by 65.9% The droplet spontaneously shrinks to the lowest surface energy state between the templates, which reduces the optimal micro / nano circuit length, delay time and energy loss by 8.9%, 17.1% and 24.5% respectively, which provides a new design idea for the circuit manufacturing of high-performance chips in the future And it has realized the fine manufacturing of three-dimensional micro nano structure, which is applied in the three-dimensional circuit and multi-color display devices The series of research results have been published as cover papers in adv mater (adv mater., 2017, 29, 1605223; adv mater., 2018, 30, 1703963) Fig 3 printing and manufacturing of optimal micro / nano circuits (source: adv mater., 2017, 29, 1605223) Fig 4 3D printing of multi-material micro / nano structures (source: adv mater., 2018, 30, 1703963) (3) the research team used the micro template to control the evolution of the foam, overcome the bubble control problems that puzzled for over a hundred years, realized the "printing" patterning of bubbles, and assembled many kinds of functional materials as templates to open up a new way of thinking for the printing and preparation of functional devices (Nat Commun., 2017, 8) 14110) and then, a moire free display screen with disordered controllable conductive grid is prepared by using this method (adv opt Mater., 2017, 5, 1700751) Figure 5 Regulation and patterning of two-dimensional foam evolution (source: Nat Commun., 2017, 8, 14110) Figure 6 Foam template method for printing moire free display screen (source: Adv Opt Mater., 2017, 5, 1700751) (4) as a mechanical buffer layer and an optical resonator, the research group prepared a honeycomb like nano bracket by a nano assembly printing method, which greatly improved the flexible perovskite solar cells The photoelectric conversion efficiency and mechanical stability The photoelectric conversion efficiency of the prepared flexible perovskite solar cell is 12.32%, and it has excellent bending resistance, which can be applied to the flexible solar cell module Due to the high photoelectric conversion efficiency and stable performance of the solar cell module, it is feasible to apply large-scale flexible perovskite solar cells to wearable devices The research results were published in adv mater (adv mater., 2017, 29, 1703236) Figure 7 preparation of honeycomb nano scaffold and wearable solar power application (source: adv mater., 2017, 29, 1703236) (5) the research group cooperated with Professor Zhou Jinming of Hebei Normal University (graduated from this group in 2011) by combining graphene nanoflakes and graphene quantum dots By introducing the optical structure, the incoherent scattering caused by the disordered optical structure is eliminated and the color saturation of the structure color is increased by using the absorption property of graphene nano sheet; at the same time, the photoluminescence property and the interaction between the photoluminescence property and the optical structure regulated by the excitation wavelength of graphene quantum dot are used to match the photoluminescence wavelength and the photonic band gap of the optical structure, The effective compensation of color brightness of non rainbow structure color is realized by using the luminescence of graphene quantum dots On this basis, a structure responsive nanocomposite film with humidity response was prepared by filling the polyacrylamide hydrogel with a disordered optical structure as a template The color of the film can change with the change of the environmental humidity, thus indicating the change of the environmental humidity This study effectively promotes the application of non rainbow structured color materials in intelligent pigments, new visual sensors and other fields The research results were published on advanced functional materials (adv funct Mater., 2018, 28, 1802585) Figure 8 high brightness structured color and humidity sensor (source: adv funct Mater., 2018, 28, 1802585) Today, people and scientific research are increasingly valued in the economic life of science and technology elements, China ushered in the "node of science and technology explosion" Behind the progress of science and technology is the work of countless scientists In the field of chemistry, in the context of the pursuit of innovation driven, international cooperation has been strengthened, the influence of Returned Scholars in the field of R & D has become increasingly prominent, and many excellent research groups have emerged in China For this reason, CBG information adopts the 1 + X reporting mechanism CBG information, chembeangoapp, chembeango official microblog, CBG wechat subscription number and other platforms jointly launch the column of "people and scientific research", approach the domestic representative research group, pay attention to their research, listen to their stories, record their demeanor, and explore their scientific research spirit.