Reversible gold nanorod alignment in mechano-responsive elastomers

Pletsch, Holger; Tebbe, Moritz; Dulle, Martin; Förster, Beate; Fery, Andreas; Förster, Stephan; Greiner, Andreas; Agarwal, Seema

doi:10.1016/j.polymer.2015.04.037

Cited by 17 publications

(21 citation statements)

References 33 publications

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“…Anisotropic photoemission was also demonstrated by Talapin and co‐workers for semiconducting nanorods embedded in elastomers on stretching (Figure c) . Similarly, Agarwal and co‐workers showed polarized extinction on Au nanorod alignment on elongation of a host elastomer film (Figure d) …”

Section: Properties and Applicationssupporting

confidence: 57%

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Directed Assembly of Hybrid Nanomaterials and Nanocomposites

et al. 2018

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Hybrid nanomaterials are molecular or colloidal-level combinations of organic and inorganic materials, or otherwise strongly dissimilar materials. They are often, though not exclusively, anisotropic in shape. A canonical example is an inorganic nanorod or nanosheet sheathed in, or decorated by, a polymeric or other organic material, where both the inorganic and organic components are important for the properties of the system. Hybrid nanomaterials and nanocomposites have generated strong interest for a broad range of applications due to their functional properties. Generating macroscopic assemblies of hybrid nanomaterials and nanomaterials in nanocomposites with controlled orientation and placement by directed assembly is important for realizing such applications. Here, a survey of critical issues and themes in directed assembly of hybrid nanomaterials and nanocomposites is provided, highlighting recent efforts in this field with particular emphasis on scalable methods.

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Section: Properties and Applicationssupporting

confidence: 57%

“…Nanorods are functionalized with a dithiol triblock copolymer and reside in a elastomer of poly(styrene‐ b ‐ethylene/butylene‐ b ‐styrene) triblock copolymer. Adapted with permission . Copyright 2015, Elsevier.…”

Section: Properties and Applicationsmentioning

confidence: 99%

Directed Assembly of Hybrid Nanomaterials and Nanocomposites

et al. 2018

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“…For this, it is necessary to align the ensemble of NPs macroscopically. This was achieved for anisotropic NPs homogenously dispersed in an elastic polymer matrix [49,50]. By uniaxial stretching of the material, the NPs are oriented along the direction of elongation.…”

Section: Lspr Spectroscopy Of Single Nps and Disordered Np Assembliesmentioning

confidence: 99%

Plasmonics in Sensing: From Colorimetry to SERS Analytics

Kuttner¹

2018

Plasmonics

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This chapter gives a brief overview of plasmonic nanoparticle (NP)-based sensing concepts ranging from classical spectral-shift colorimetry to the highly active field of surface-enhanced Raman scattering (SERS) spectroscopy. In the last two decades, colloidal approaches have developed significantly. This is seen with, for example, refractive-index sensing, detection of ad−/desorption and ligand-exchange processes, as well as ultrasensitive chemical sensing utilizing well-defined nanocrystals or discrete self-assembled superstructures in 2D and 3D. Apart from individual NPs, the rational design of self-assembled nanostructures grants spectroscopic access to unprecedented physicochemical information. This involves selected research examples on molecular trapping, ligand corona analysis, SERS-encoding, and biosensing. The origin of the SERS effect, also in regard to hot spot formation by off-resonant excitation, is reviewed and discussed in the context of the current challenge to formulate a generalized metric for high SERS efficiency. Special emphasis lies in addressing the fundamental design criteria and the specific challenges of these particle-based sensing techniques.

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“…[ 23 ] These micropatterning methods have been widely used in creating metasurfaces for polarization‐selective holograms, [ 24,25 ] color display, and optical encryption, [ 26,27 ] with complex instrumentations with limited scale‐up likelihood. A facile way to obtain oriented plasmonic structures is to induce alignment based on shearing and stretching, [ 28,29 ] which has been widely applied to fabricate polarizers. [ 30,31 ] The resulting polarizers are generally supported by a matrix, such as polymer and glass, which can provide high transparency and mechanical toughness.…”

Section: Introductionmentioning

confidence: 99%

Recoverable Photolithographic Patterning for Polarized Display and Encryption

Feng

et al. 2020

Adv Materials Technologies

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Anisotropic plasmonic nanostructures have attracted significant attention in recent years because of their unique optical properties and potential applications in holograms, thermotherapy, and information encoding. Herein, a gold nanorods/photoactive hydrogel system with excellent mechanical and photoreactive recoverability is developed. Multiscale engineering exploits the synergy among components to endow the system with rapid self‐healing ability, repetitive photolithographic capability, robust mechanical properties, and 3D printability, enabling multiple encoding routes including polarized patterns based on depolarization under UV‐lithography, polarized patterns by direct ink writing, invisible patterns through increased light absorption by depolarization, and thermal imaging patterns by anisotropic photothermal effects. This approach provides a facile and sustainable method for polarized patterning, thereby contributing to smart devices for applications in display, information encryption, and anti‐counterfeiting.

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Reversible gold nanorod alignment in mechano-responsive elastomers

Cited by 17 publications

References 33 publications

Directed Assembly of Hybrid Nanomaterials and Nanocomposites

Directed Assembly of Hybrid Nanomaterials and Nanocomposites

Plasmonics in Sensing: From Colorimetry to SERS Analytics

Recoverable Photolithographic Patterning for Polarized Display and Encryption

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