Societal Impact and Future Trends in Nanomaterials

Mukhopadhyay, Sharmila M.

doi:10.1002/9781118114063.ch2

Cited by 1 publication

(1 citation statement)

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“…Multifunctional materials find applications in energy, medicine, nanoelectronics, aerospace, defense, semiconductor, and other industries. − Thus, in the past decades, many scientists pushed their efforts in assembling and engineering samples with multiple properties (electrical, optical, mechanical, magnetic, etc.). Bottom-up and top-down approaches have been employed for this purpose, exploiting the ability to control structural and morphological changes at the nanoscale level. − However, in view of many technological applications, it is of fundamental importance that the applied methods allow the manufacturing of large area samples (cm 2 range) by employing low-cost processes that can be easily scaled at the industrial level. , …”

Section: Introductionmentioning

confidence: 99%

Infrared Plasmonics via Self-Organized Anisotropic Wrinkling of Au/PDMS Nanoarrays

Barelli

Repetto

Mongeot

2019

ACS Appl. Polym. Mater.

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Polydimethylsiloxane (PDMS) templates are nanopatterned over large areas to form uniaxial wrinkles by air plasma treatment on prestretched samples. Ripple-like structures with tunable height/width aspect ratio are so achieved. The anisotropic uniaxial PDMS modulations represent an ideal platform for the confinement of plasmonic nanowire (NW) arrays by grazing angle Au thermal deposition. This self-organized fabrication method is suitable to be scaled to the industrial level as a single step maskless process. The flexible NW arrays show monodisperse width distribution and exhibit strongly dichroic optical properties. Localized surface plasmon resonances (LSPR) of dipolar and multipolar character are excited when light is linearly polarized orthogonally to the NW major axis. The LSPR wavelength can be easily tuned across a remarkably large spectral range from 600 to 1200 nm by engineering the NW width and the PDMS ripple morphology. The PDMS/Au NW nanocomposite material also shows relevant performance as a transparent flexible electrode with sheet resistance on the order of 15 Ω/sq, a figure of merit which is competitive with the best transparent conductive oxides.

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