Functional nanomaterials as a basic material unit for constructing a functional device with a fine micro-nano structure are of great significance in device preparation in fields such as light, electricity, magnetism, and biology, thus making nano-materials precise assembly and patterning techniques become current A major research hotspot in the field of nanoscience and technology.
Under the strong support of the National Natural Science Foundation of China, the Ministry of Science and Technology, and the Chinese Academy of Sciences, researchers from the Song Yanlin Research Group, a researcher at the Green Printing Key Laboratory of the Institute of Chemistry, Chinese Academy of Sciences, used green nano-printing and printing technology to control the assembly of functional nanomaterials. A series of extensive and in-depth studies were conducted on fine patterning techniques and device applications (Adv. Mater. 2014, 26, 6950-6958).
They successfully prepared a series of special structures and patterns by controlling the printing conditions of inks, substrates, etc.: The metal nanoparticle pattern with a line width of 5 μm can be produced using the “coffee ring†phenomenon (Adv. Mater. 2013, 25, 6714-6718). A pattern with a special three-dimensional structure was prepared using the three-phase line slip of the ink (Adv. Opt. Mater. 2013, 2, 34-38; Adv. Funct. Mater. 2015, 25, 2237-2242); A special three-dimensional columnar structure was prepared by ink jet printing magnetic ink (Small 2015, 11, 1900-1904); micropits and groove structures were prepared by ink jet printing of a soft substrate (Adv. Funct. Mater. 2015, 25, 3286- 3294).
In terms of applications, they achieved plasma lightwave transmission using these printed and printed structures and patterns (Adv. Mater. 2014, 26, 2501-2507); Highly Sensitive Detection (Angew.Chem.Int.Ed. 2014, 53, 5791-5795; Nanoscale 2015, 7, 421-425); Quantum Dot Patterns (Small 2015, 11, 1649-1654); Biological Cell Separation (ACS Appl. Mat.Interfaces 2015, 7, 9060-9065).
Based on these studies, they used the ink-jet printing technology to build a micron-scale electrode pattern as a "template" to control the assembly process of nano-materials, successfully prepared a pattern with the highest accuracy of up to 30 nm (Figure 1), and realized a flexible circuit. The application (Figure 2). This new patterning technology makes it very easy to achieve precise micro-nano-patterned assembly of functional nanomaterials, completely avoiding the traditional lithography process in the process. This "all additive manufacturing" method by "printing first, The "re-printing" method, which enables the preparation of fine patterns and functional devices assembled from nano-materials in a large area, is a major breakthrough in the field of "green nano-printing technology" in the frontier science field, and has a major impact on the functionalization and device development of printing technology. Promote the role. The research results were published in the recently published "Advanced Materials" (Adv.Mater.2015, 27, 3928-3933).
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