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Non-Lithography Hydrodynamic Printing of Micro/Nanostructures on Curved Surfaces |
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| Authors: | Prof Meng Su Feifei Qin Zeying Zhang Bingda Chen Qi Pan Dr Zhandong Huang Zheren Cai Zhipeng Zhao Prof Xiaotian Hu Prof Dominique Derome Prof Jan Carmeliet Prof Yanlin Song |
| Institution: | 1. Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190 P. R. China;2. Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology in Zürich (ETH Zürich), 8093 Zürich, Switzerland
Laboratory of Multiscale Studies in Building Physics, Empa (Swiss Federal Laboratories for Materials Science and Technology), 8600 Dübendorf, Switzerland These authors contributed equally to this work.;3. Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190 P. R. China University of Chinese Academy of Sciences, Beijing, 100049 P. R. China;4. Laboratory of Multiscale Studies in Building Physics, Empa (Swiss Federal Laboratories for Materials Science and Technology), 8600 Dübendorf, Switzerland Department of Civil and Building Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1 Canada;5. Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology in Zürich (ETH Zürich), 8093 Zürich, Switzerland |
| Abstract: | A key issue of micro/nano devices is how to integrate micro/nanostructures with specified chemical components onto various curved surfaces. Hydrodynamic printing of micro/nanostructures on three-dimensional curved surfaces is achieved with a strategy that combines template-induced hydrodynamic printing and self-assembly of nanoparticles (NPs). Non-lithography flexible wall-shaped templates are replicated with microscale features by dicing a trench-shaped silicon wafer. Arising from the capillary pumped function between the template and curved substrates, NPs in the colloidal suspension self-assemble into close-packed micro/nanostructures without a gravity effect. Theoretical analysis with the lattice Boltzmann model reveals the fundamental principles of the hydrodynamic assembly process. Spiral linear structures achieved by two kinds of fluorescent NPs show non-interfering photoluminescence properties, while the waveguide and photoluminescence are confirmed in 3D curved space. The printed multiconstituent micro/nanostructures with single-NP resolution may serve as a general platform for optoelectronics beyond flat surfaces. |
| Keywords: | conformal printing curved surfaces micro/nanostructures non-lithographic templates photonic manipulation |