Nanoimprint Lithography (NIL) has been an interesting and growing field over the last years since its beginnings in the mid 1990ies [...].
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| http://dx.doi.org/10.3390/nano11092413 | DOI Listing |
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Anti-Biofilm Performance of Resin Nanopillars Inspired from Cicada Wing Surface for spp.
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Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamatecho, Suita 564-8680, Osaka, Japan.
The increase in infections derived from biofilms from spp. prompted us to develop novel strategies to inhibit biofilm development. Nanoscale protrusion structures (nanopillars) observed on the wings of dragonflies and cicadas have recently gained notable attention owing to their physical, antimicrobial, and bactericidal properties.
View Article and Find Full Text PDFPolymer Films' Residual Stress Attenuation from the Supramolecular Complexation with Ultra-Small Nanoparticles for High Resolution Nanoimprint Lithography.
Angew Chem Int Ed Engl
December 2024
South China University of Technology, South China Advanced Institute for Soft Matter Science and Technology, South China Advanced Institute for Soft Matter Science and Technology, 510640, Guangzhou, CHINA.
Nanoimprint lithography (NIL) has been broadly applied in the fabrication of nano-patterned polymer films for cost-efficiency and high through-put; however, the intrinsic tradeoff between mechanical strength and residual stress of polymer films significantly limits the NIL resolution while the harsh processing conditions limit its versatile applications to different substrates. Herein, 1 nm metal oxide cluster, phosphotungstic acid (PTA), is used to complexed with polyvinyl alcohol (PVA) for high-resolution NIL that can be operated at large-scale and mild conditions. The ultra-small size of PTA enables dense supramolecular interaction with PVA for the diminished crystallinity and accelerated chain dynamics that help relax the residual stress during film casting.
View Article and Find Full Text PDFGeneric characterization method for nano-gratings using deep-neural-network-assisted ellipsometry.
Nanophotonics
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Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.
As a non-destructive and rapid technique, optical scatterometry has gained widespread use in the measurement of film thickness and optical constants. The recent advances in deep learning have presented new and powerful approaches to the resolution of inverse scattering problems. However, the application of deep-neural-network-assisted optical scatterometry for nanostructures still faces significant challenges, including poor stability, limited functionalities, and high equipment requirements.
View Article and Find Full Text PDFA single nanophotonic platform for producing circularly polarized white light from non-chiral emitters.
Nat Commun
November 2024
Institute of Materials Science of Barcelona ICMAB-CSIC, Campus UAB, Bellaterra, Spain.
Direct manipulation of light spin-angular momentum is desired in optoelectronic applications such as, displays, telecommunications, or imaging. Generating polarized light from luminophores avoids using optical components that cause brightness losses and hamper on-chip integration of light sources. Endowing chirality to achiral emitters for direct generation of polarized light benefits from existing materials and can be achieved by chiral nanophotonics.
View Article and Find Full Text PDFMetasurface holography, capable of fully engineering the wavefronts of light in an ultra-compact manner, has emerged as a promising route for vivid imaging, data storage, and information encryption. However, the primary manufacturing method for visible metasurface holography remains limited to the expensive and low-productivity electron-beam lithography (EBL). Here, we experimentally demonstrate the polarization-insensitive visible metasurface holography fabricated by high-throughput and low-cost nanoimprint lithography (NIL).
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