Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 34, Pages 14234-14240Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202007224
Keywords
conformal printing; curved surfaces; micro; nanostructures; non-lithographic templates; photonic manipulation
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Funding
- National Key R&D Program of China [2018YFA0208501]
- National Natural Science Foundation of China [51803217, 51773206, 91963212, 51961145102]
- Youth Innovation Promotion Association CAS [2020032]
- K.C. Wong Education Foundation
- Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-202005]
- Swiss National Science Foundation [160189]
- Swiss National Super Computing Center [s823]
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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.
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