A simple scanning spectrometer based on a stretchable elastomeric reflective grating

Ghisleri, C.; Potenza, M. A. C.; Ravagnan, L.; Bellacicca, Andrea; Milani, P.

doi:10.1063/1.4865427

Cited by 18 publications

(12 citation statements)

References 16 publications

(25 reference statements)

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“…[11][12][13] In view of applications, a fundamental issue is the stability of the nanocomposite optical properties upon cyclic strain conditions; to date, no characterization of this aspect is reported in the literature, although there are clear evidences that nanoparticles in an elastomeric matrix are a dynamic system undergoing rearrangement and reorganization upon stretching. 19 Recently, we showed that neutral metal clusters produced in the gas phase and aerodynamically accelerated by a supersonic expansion can be implanted in a Polydimethylsiloxane (PDMS) substrate to obtain a nanocomposite with superior resilience and interesting optical properties for the fabrication of stretchable and conformable reflective gratings; 20,21 this approach is called Supersonic Cluster Beam Implantation (SCBI).…”

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confidence: 99%

Metal-polymer nanocomposite with stable plasmonic tuning under cyclic strain conditions

Minnai

Milani

2015

Applied Physics Letters

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We report the fabrication and characterization of stretchable nanocomposite films with mechanically tunable surface plasmon resonance. The films have been produced by implantation in a Polydimethylsiloxane substrate of neutral gold nanoparticles aerodynamically accelerated in a supersonic expansion. Optical absorption spectroscopy shows that uniaxial stretching of the nanocomposite induce a reversible redshift of the plasmon peak up to 180 nm from the peak wavelength of the non-stretched sample. The range of the plasmon peak shift depends upon the density of implanted nanoparticles. The optical behavior of the nanocomposite evolves upon cyclical stretching due to the rearrangement of the nanoparticles in the elastomeric matrix. We have identified the fabrication and post-deposition treatment conditions to stabilize the plasmonic shift upon cyclical stretching in order to obtain robust and large area nanocomposites with tunable and reproducible optical properties over a wide visible wavelength range.

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confidence: 99%

Metal-polymer nanocomposite with stable plasmonic tuning under cyclic strain conditions

Minnai

Milani

2015

Applied Physics Letters

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“…This value of t eq provides a diffraction efficiency of some 10% across the entire visible spectrum. 15,16 The gratings have been characterized independently in terms of the capability of curving the wavefronts and of producing small focal spots, as detailed in the Appendix. Here we just mention that the main limitation in the optical properties comes primarily from the limited surface quality of the gratings themselves.…”

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confidence: 99%

“…[13][14][15] In particular, the use of tunable gratings based on stretchable reflective substrates could revolutionize the design of optical mini spectrometers and significantly widen their field of applications. 16 Although appealing, the use of deformable reflecting optical elements has been hampered by the difficulty of integrating reflecting metallic films on elastomeric substrates due to delamination of the metallic layer upon deformation. 14 We recently reported the fabrication of stretchable reflective gratings based on metal-elastomer nanocomposites obtained by Supersonic Cluster Beam Implantation (SCBI) in polydimethylsiloxane (PDMS).…”

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confidence: 99%

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Hyperspectral imaging with deformable gratings fabricated with metal-elastomer nanocomposites

Potenza

Nazzari

Cremonesi

et al. 2017

Review of Scientific Instruments

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We report the fabrication and characterization of a simple and compact hyperspectral imaging setup based on a stretchable diffraction grating made with a metal-polymer nanocomposite. The nanocomposite is produced by implanting Ag clusters in a poly(dimethylsiloxane) film by supersonic cluster beam implantation. The deformable grating has curved grooves and is imposed on a concave cylindrical surface, thus obtaining optical power in two orthogonal directions. Both diffractive and optical powers are obtained by reflection, thus realizing a diffractive-catoptric optical device. This makes it easier to minimize aberrations. We prove that, despite the extended spectral range and the simplified optical scheme, it is actually possible to work with a traditional CCD sensor and achieve a good spectral and spatial resolution.

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“…30 This work has been supported by project "ELDABIElettronica Deformabile per Applicazioni Biomediche" (Project No. 26599138).…”

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Stretchable nanocomposite electrodes with tunable mechanical properties by supersonic cluster beam implantation in elastomers

Borghi

Melis²,

Ghisleri³

et al. 2015

Applied Physics Letters

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We demonstrate the fabrication of gold-polydimethylsiloxane nanocomposite electrodes, by supersonic cluster beam implantation, with tunable Young's modulus depending solely on the amount of metal clusters implanted in the elastomeric matrix. We show both experimentally and by atomistic simulations that the mechanical properties of the nanocomposite can be maintained close to that of the bare elastomer for significant metal volume concentrations. Moreover, the elastic properties of the nanocomposite, as experimentally characterized by nanoindentation and modeled with molecular dynamics simulations, are also well described by the Guth-Gold classical model for nanoparticle-filled rubbers, which depends on the presence, concentration, and aspect ratio of metal nanoparticles, and not on the physical and chemical modification of the polymeric matrix due to the embedding process. The elastic properties of the nanocomposite can therefore be determined and engineered a priori, by controlling only the nanoparticle concentration.

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A simple scanning spectrometer based on a stretchable elastomeric reflective grating

Abstract: Enhanced broadband ultrafast detection of ultraviolet emission using optical Kerr gating Rev. Sci. Instrum. 85, 055114 (2014); 10.1063/1.4873475Design and implementation of a high-resolution, high-efficiency optical spectrometer Rev.

Cited by 18 publications

References 16 publications

Metal-polymer nanocomposite with stable plasmonic tuning under cyclic strain conditions

Metal-polymer nanocomposite with stable plasmonic tuning under cyclic strain conditions

Hyperspectral imaging with deformable gratings fabricated with metal-elastomer nanocomposites

Stretchable nanocomposite electrodes with tunable mechanical properties by supersonic cluster beam implantation in elastomers

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