Stretchable metal-elastomer nanovoids for tunable plasmons

Cole, Robin M.; Mahajan, Sumeet; Baumberg, Jeremy J.

doi:10.1063/1.3247966

Cited by 44 publications

(37 citation statements)

References 22 publications

(12 reference statements)

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“…Except for mechanical tuning, other tuning mechanisms offer a rather small spectral range of tuning. Mechanically tunable plasmonic structures which have already been demonstrated include metal nanoparticles embedded in a polymer matrix [9], and metal gratings [8,10] and nanovoids [11] supported by elastomers. Metal nanoparticles support only localized surface plasmons, while metal gratings support delocalized surface plasmons, but for a single polarization.…”

Section: Introductionmentioning

confidence: 99%

“…Metal nanoparticles support only localized surface plasmons, while metal gratings support delocalized surface plasmons, but for a single polarization. On the other hand, tunable metal nanovoids [11] can support localized or delocalized surface plasmons depending on their truncations. Their reported spectral tuning range is, however, rather small [11].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, tunable metal nanovoids [11] can support localized or delocalized surface plasmons depending on their truncations. Their reported spectral tuning range is, however, rather small [11]. Moreover, both tunable metal gratings and nanovoids cannot sustain large strain since fractures occur under these conditions.…”

Section: Introductionmentioning

confidence: 99%

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A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

et al. 2010

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A highly stretchable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate has been fabricated using simple and inexpensive self-assembly and transfer-printing techniques. This composite structure supports coupled surface plasmons whose wavelengths are sensitive to the arrangement of the metal-capped colloidal spheres. Upon stretching, the lattice of metal-capped colloidal spheres will be deformed, leading to a large wavelength shift of surface plasmon resonances and simultaneously an obvious color change. This stretchable plasmonic structure offers a promising approach to tune surface plasmon resonances and might be exploited in realizing flexible plasmonic devices with tunability of mechanical strain.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

et al. 2010

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“…In the realm of plasmonic structure design, elastomeric substrates have been used to alter the resonant response of nanoparticle dimers and gratings [10,11]. In a previous paper, we showed that mechanical actuation of a surface can be used to achieve a linewidth shift in the resonant response of a metamaterial surface [12].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the tunable response of highly strained compliant optical metamaterials

Pryce

Aydın

Kelaita

et al. 2011

Phil. Trans. R. Soc. A.

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Metamaterial designs are typically limited to a narrow operating bandwidth that is predetermined by the fabricated dimensions. Various approaches have previously been used to introduce post-fabrication tunability and thus enable active metamaterials. In this work, we exploit the mechanical deformability of a highly compliant polymeric substrate to achieve dynamic, tunable resonant frequency shifts greater than a resonant linewidth. We investigate the effect of metamaterial shape on the plastic deformation limit of resonators. We find that, for designs in which the local strain is evenly distributed, the response is elastic under larger global tensile strains. The plastic and elastic limits of resonator deformation are explored and the results indicate that, once deformed, the resonators operate within a new envelope of elastic response. We also demonstrate the use of coupled resonator systems to add an additional degree of freedom to the frequency tunability and show that compliant substrates can be used as a tool to test coupling strength. Finally, we illustrate how compliant metamaterials could be used as infrared sensors, and show enhancement of an infrared vibration absorption feature by a factor of 225.

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“…Stretchable plasmonic structures have generated increasing interest for actively tuning optical response in a reproducible and continuous way. Through mechanical deformation of elastomeric substrates, spectral shifts in the resonance of plasmonic structures are reported, such as in nanoparticles matrix [13], gratings [14] and metal nanovoids [15]. However, most of the stretch-tunable plasmonics rely on modifying the gaps or cavities within or between the resonant elements which leads to limited working wavelengths.…”

Section: Introductionmentioning

confidence: 99%

A stretch-tunable plasmonic structure with a polarization-dependent response

Zhu¹,

Xiao²,

Shi³

et al. 2012

Opt. Express

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We experimentally demonstrate a stretchable plasmonic structure composed of a monolayer array of gold semishells with dielectric cores on an elastic PDMS substrate. The composite structure is fabricated using simple and inexpensive self-assembly and transfer-printing techniques, and it supports Bragg-type surface plasmon resonances whose frequencies are sensitive to the arrangement of the metallic semishells. Under uniaxial stretching, the lattice symmetry of this plasmonic structure can be reconfigured from hexagonal to monoclinic, leading to resonance frequency shifts from 200 THz to 191 THz for the TM polarization and from 200 THz to 198 THz for the TE polarization with a strain up to 20%, respectively. Compared with previously reported tunable plasmonic structures, the reconfiguration of lattice symmetry offers a promising approach to tune the surface plasmon resonance with a polarization-dependent response at the standard telecommunication band, and such tunable plasmonic structure might be exploited in realizing photonic devices such as sensors, switches and filters.

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Stretchable metal-elastomer nanovoids for tunable plasmons

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Cited by 44 publications

References 22 publications

A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

Characterization of the tunable response of highly strained compliant optical metamaterials

A stretch-tunable plasmonic structure with a polarization-dependent response

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