Laser-induced color printing on semicontinuous silver films: red, green and blue

Nyga, Piotr; Chowdhury, Sarah N.; Kudyshev, Zhaxylyk A.; Thoreson, Mark D.; Kildishev, Alexander V.; Shalaev, Vladimir M.; Boltasseva, Alexandra

doi:10.1364/ome.9.001528

Cited by 15 publications

(40 citation statements)

References 29 publications

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“…Although that structure 24 showed stable colors, a sufficiently wide gamut was not achieved. To achieve a broader range of stable colors, we first changed the Ag SMF layer to explore the correspondence between the deposited metal nanoparticles and the resulting optical spectra.…”

Section: Dependence Of the Smf/m Color On The Thickness Of The Top Ag...mentioning

confidence: 93%

“…Semicontinuous metal films (SMF), which are disordered, island-containing films made of metallic nanoparticles and their clusters of various sizes and shapes, have recently been 3 explored for plasmonic coloration [22][23][24] . Such films can be readily achieved in a simple deposition process where a metallic layer is deposited on a planar substrate close to the percolation threshold, which means that instead of forming a continuous film, disconnected metal islands of different sizes and shapes are formed.…”

Section: Introductionmentioning

confidence: 99%

“…Such spatially, frequency and polarization selective photomodification enables a gradual change in the optical spectra, which in turn allows for a highly controllable change in colors. This inexpensive, simple, and environmentally-friendly method of color generation has been recently demonstrated with single-layer SMFs and with SMFs deposited over a dielectric spacer on top of a metallic backplane mirror 44 to show promising results for macroscopic printing applications [22][23][24]43,44 . Laser printing on other plasmonic random 6,[45][46][47][48][49][50] and ordered 51 structures have also been recently reported.…”

Section: Introductionmentioning

confidence: 99%

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Lithography-Free Plasmonic Color Printing with Femtosecond Laser on Semicontinuous Silver Films

et al. 2020

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Plasmonic color printing with semicontinuous metal films is a lithography-free and environment-friendly method for generating non-fading bright colors. Such films are comprised of islands -metal nanoparticles and their clusters of various dimensions, which resonate at different wavelengths upon external light illumination depending on the size and 2 shape of the local particle structures. To experimentally realize systems that were optimized for achieving a broad color range and increased stability, various silver semicontinuous metal films were deposited on a metallic (Ag) mirror with a sub-wavelength-thick dielectric (SiO2) spacer. Femtosecond laser post-processing was then introduced to extend the color gamut through spectrally induced changes from blue to green, red, and yellow. Long-term stability and durability of the structures were addressed to enable non-fading colors with an optimized overcoating dielectric layer. The thickness of the proposed design is on the order of 100 nanometers, and it can be deposited on any substrate. These structures generate a broad range of long-lasting colors in reflection that can be applied to real-life artistic or technological applications with a spatial resolution on the order of 0.3 mm or less.

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Section: Dependence Of the Smf/m Color On The Thickness Of The Top Ag...mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lithography-Free Plasmonic Color Printing with Femtosecond Laser on Semicontinuous Silver Films

et al. 2020

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“…[8] There have been many reports on using nano-metal with different structural design. [9][10][11][12][13][14] These works have used well defined geometry and/or periodicity to generate the color. Fabrication of these well-defined structures usually required using of precise lithography methods such as e-beam lithography or nano-imprint.…”

Section: Introductionmentioning

confidence: 99%

Color generation through plasmonic coupled dissimilar nano‐metals using mask free deposition

2020

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The dissimilar nano-metals were deposited mask free and their plasmonic coupling studied. Coupling between dissimilar nano-metals can generate a larger red shift in plasmonic resonance when compare to (say) nano-Ag/Ag coupling of various size. Tunable reflectant color was achieved through plasmonic coupling between nano-Ag and another nano-metal. The tunable range is from blue to red; covering the entire optical range. The tunability can be achieved through varying the nano-metal size and/or through the plasmonic coupling between two dissimilar nano-metals. The nano-metals are randomly distributed and packed densely. Hence, the plasmonic coupling effect observed is a collective effect. The distribution of the nano-particle size, and inter-particle gap distance were determined. The experimental results show that coupling of nano-Ag with lighter atom metal such as Mg generates smaller red shift, whereas larger atom metal such as Cr would give larger red shift. The result demonstrates that it is possible to produce reflected color across the optical range using single layer of nano-metals. K E Y W O R D S nano-metals, plasmonic coupling, surface plasmon polaritons This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…The interest in graphene is mainly due to its biocompatibility and ability to quench photoluminescence [32,33].As previously shown by near-field and two-photon luminescence microscopy [22,25], the strongest FE is generated near the percolation threshold. The presence of such strong FE has recently allowed the realization of the color printing and laser-induced modification of local resonance properties in near-percolation metal films [34][35][36]. However, there are still no systematic studies of SERS signal dependence on the thickness of thin films near and far from the percolation threshold and applicability of such thin films for SERS.…”

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confidence: 99%

Surface-Enhanced Raman Spectroscopy on Hybrid Graphene/Gold Substrates near the Percolation Threshold

et al. 2020

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Graphene is a promising platform for surface-enhanced Raman spectroscopy (SERS)-active substrates, primarily due to the possibility of quenching photoluminescence and fluorescence. Here we study ultrathin gold films near the percolation threshold fabricated by electron-beam deposition on monolayer CVD graphene. The advantages of such hybrid graphene/gold substrates for surface-enhanced Raman spectroscopy are discussed in comparison with conventional substrates without the graphene layer. The percolation threshold is determined by independent measurements of the sheet resistance and effective dielectric constant by spectroscopic ellipsometry. The surface morphology of the ultrathin gold films is analyzed by the use of scanning electron microscopy (SEM) and atomic force microscopy (AFM), and the thicknesses of the films in addition to the quartz-crystal mass-thickness sensor are also measured by AFM. We experimentally demonstrate that the maximum SERS signal is observed near and slightly below the percolation threshold. In this case, the region of maximum enhancement of the SERS signal can be determined using the figure of merit (FOM), which is the ratio of the real and imaginary parts of the effective dielectric permittivity of the films. SERS measurements on hybrid graphene/gold substrates with the dye Crystal Violet show an enhancement factor of ~105 and also demonstrate the ability of graphene to quench photoluminescence by an average of ~60%.

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Laser-induced color printing on semicontinuous silver films: red, green and blue

Cited by 15 publications

References 29 publications

Lithography-Free Plasmonic Color Printing with Femtosecond Laser on Semicontinuous Silver Films

Lithography-Free Plasmonic Color Printing with Femtosecond Laser on Semicontinuous Silver Films

Color generation through plasmonic coupled dissimilar nano‐metals using mask free deposition

Surface-Enhanced Raman Spectroscopy on Hybrid Graphene/Gold Substrates near the Percolation Threshold

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