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Non-Lithography Hydrodynamic Printing of Micro/Nanostructures on Curved Surfaces. | LitMetric

Non-Lithography Hydrodynamic Printing of Micro/Nanostructures on Curved Surfaces.

Angew Chem Int Ed Engl

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.

Published: August 2020

AI Article Synopsis

  • A new method for hydrodynamic printing allows the integration of micro/nanostructures onto curved surfaces using a template that employs self-assembly of nanoparticles.
  • The technique utilizes a silicon wafer to create flexible templates that enable the nanoparticles to self-organize without the influence of gravity, thanks to capillary effects.
  • The research examines the properties of these structures, highlighting their potential applications in optoelectronics by demonstrating effective photoluminescence and waveguide capabilities in 3D curved environments.

Article 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.

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Source
http://dx.doi.org/10.1002/anie.202007224DOI Listing

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