Plasmonic nanopillar arrays encoded with multiplex molecular information for anti-counterfeiting applications

Liu, Y.; Lee, Y. H.; Zhang, Q.; Cui, Yan; Ling, Xing Yi

doi:10.1039/c6tc00682e

Cited by 40 publications

(48 citation statements)

References 32 publications

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“…With the availability of a plethora of nanobarcodes, they have been employed for many applications such as detection of biomolecules (nucleic acid and proteins), imaging, security, drug delivery, theranostics, etc. 7,11,[14][15][16][17][18][19][20][21] Decoding of signals from these nano-barcodes depends on their encoding technique. For instance, nano-barcodes with fluorescent encoding elements requires fluorescence microscopy or spectra measurement for detection, whereas nano-barcodes of different light reflectivity pattern can be read out by reflectance optical microscopy.…”

Section: Thoriq Salafimentioning

confidence: 99%

“…Nano-barcodes based on nanobeads, nanostars, and nanopillar arrays conjugated with different Raman reporters have been reported. 19,128,129 The signal decoding for SERS based encoding can be achieved through a Raman spectrometer and a Raman microscope. 128 In addition to the traditional spectrometers, a confocal Raman microscope has been used to decode the SERS signal from silver and gold nanodisk codes.…”

Section: Structural Colour Encodingmentioning

confidence: 99%

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Versatile design and synthesis of nano-barcodes

et al. 2017

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Encoded nano-structures/particles have been used for barcoding and are in great demand for the simultaneous analysis of multiple targets. Due to their nanoscale dimension(s), nano-barcodes have been implemented favourably for bioimaging, in addition to their security and multiplex bioassay application. In designing nano-barcodes for a specific application, encoding techniques, synthesis strategies, and decoding techniques need to be considered. The encoding techniques to generate unique multiple codes for nano-barcodes are based on certain encoding elements including optical (fluorescent and non-fluorescent), graphical, magnetic, and phase change properties of nanoparticles or their different shapes and sizes. These encoding elements can generally be embedded inside, decorated on the surface of nanostructures or self-assembled to prepare the nano-barcodes. The decoding techniques for each encoding technique are different and need to be suitable for the desired applications. This review will provide a thorough discussion on designing nano-barcodes, focusing on the encoding techniques, synthesis methods, and decoding for applications including bio-detection, imaging, and anti-counterfeiting. Additionally, associated challenges in the field and potential solutions will also be discussed. We believe that a comprehensive understanding on this topic could significantly contribute towards the advancement of nano-barcodes for a broad spectrum of applications.

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Section: Thoriq Salafimentioning

confidence: 99%

Section: Structural Colour Encodingmentioning

confidence: 99%

Versatile design and synthesis of nano-barcodes

et al. 2017

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“…However, the SERS image of le -and right-half of "yin-yang" were selectively exhibited. e technology of multiple-layer platform with enhanced information security made anti-counterfeiting more practical in the near future [193]. Li et al [194] fabricated flexible patterned plasmonic metafilms by bottom-up self-assembly of PS and top-down laser engraving of PS beads with a Langmuir-Blodgett technique.…”

Section: Surface Wrinkles Technology In Patterns Construction and Antmentioning

confidence: 99%

Functional Micro–Nano Structure with Variable Colour: Applications for Anti-Counterfeiting

Liu¹,

Xie²,

Shen³

et al. 2019

Advances in Polymer Technology

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Colour patterns based on micro-nano structure have attracted enormous research interests due to unique optical switches and smart surface applications in photonic crystal, superhydrophobic surface modification, controlled adhesion, inkjet printing, biological detection, supramolecular self-assembly, anti-counterfeiting, optical device and other fields. In traditional methods, many patterns of micro-nano structure are derived from changes of refractive index or lattice parameters. Generally, the refractive index and lattice parameters of photonic crystals are processed by common solvents, salts or reactive monomers under specific electric, magnetic and stress conditions. This review focuses on the recent developments in the fabrication of micro-nano structures for patterns including styles, materials, methods and characteristics. It summarized the advantages and disadvantages of inkjet printing, angle-independent photonic crystal, self-assembled photonic crystals by magnetic field force, gravity, electric field, inverse opal photonic crystal, electron beam etching, ion beam etching, laser holographic lithography, imprinting technology and surface wrinkle technology, etc. This review will provide a summary on designing micro-nano patterns and details on patterns composed of photonic crystals by surface wrinkles technology and plasmonic micro-nano technology. In addition, colour patterns as switches are fabricated with good stability and reproducibility in anti-counterfeiting application. Finally, there will be a conclusion and an outlook on future perspectives.

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“…Anticounterfeiting labels are among the most common solutions, such as holograms 7 , watermarks 7 , graphical barcodes 8 , and security inks 8 . In addition, nanostructuredsurface labels containing probes with surface-enhanced Raman scattering (SERS) signatures are modern extensions of conventional anticounterfeiting system 8 , including Raman barcoding 9,10 and Raman patterning 11 . More advanced authentication labels have been developed based on molecular tags, e.g., DNA 12,13 , peptides 14,15 , and polymers 16 , which encode information mainly through the sequence of their building blocks.…”

mentioning

confidence: 99%

Gap-enhanced Raman tags for physically unclonable anticounterfeiting labels

et al. 2020

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Anticounterfeiting labels based on physical unclonable functions (PUFs), as one of the powerful tools against counterfeiting, are easy to generate but difficult to duplicate due to inherent randomness. Gap-enhanced Raman tags (GERTs) with embedded Raman reporters show strong intensity enhancement and ultra-high photostability suitable for fast and repeated readout of PUF labels. Herein, we demonstrate a PUF label fabricated by drop-casting aqueous GERTs, high-speed read using a confocal Raman system, digitized through coarsegrained coding methods, and authenticated via pixel-by-pixel comparison. A threedimensional encoding capacity of over 3 × 10 15051 can be achieved for the labels composed of ten types of GERTs with a mapping resolution of 2500 pixels and quaternary encoding of Raman intensity levels at each pixel. Authentication experiments have ensured the robustness and security of the PUF system, and the practical viability is demonstrated. Such PUF labels could provide a potential platform to realize unbreakable anticounterfeiting.

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Plasmonic nanopillar arrays encoded with multiplex molecular information for anti-counterfeiting applications

Cited by 40 publications

References 32 publications

Versatile design and synthesis of nano-barcodes

Versatile design and synthesis of nano-barcodes

Functional Micro–Nano Structure with Variable Colour: Applications for Anti-Counterfeiting

Gap-enhanced Raman tags for physically unclonable anticounterfeiting labels

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