Plasmonic ratchet wheels: Switching circular dichroism by arranging chiral nanostructures

V. K. Valev; N. Smisdom; A. V. Silhanek; B. De Clercq; W. Gillijns; M. Ameloot; V. V. Moshchalkov; T. Verbiest

doi:10.1021/nl9021623

Plasmonic ratchet wheels: Switching circular dichroism by arranging chiral nanostructures

V. K. Valev, N. Smisdom, A. V. Silhanek, B. De Clercq, W. Gillijns, M. Ameloot, V. V. Moshchalkov, T. Verbiest

Department of Physics

Research output: Contribution to journal › Article › peer-review

224 Citations (SciVal)

Abstract

We demonstrate circular dichrolsm (CD) in the second harmonic generation (SHG) signal from chiral assemblies of G-shaped nanostructures made of gold. The arrangement of the G shapes is crucial since upon reordering them the SHG-CD effect disappears. Microscopy reveals SHG "hotspots" assemblies, which originate in enantiomerically sensitive plasmon modes, having the novel property of exhibiting a chiral geometry themselves in relation with the handedness of the material. These results open new frontiers in studying chirality.

Original language	English
Pages (from-to)	3945-3948
Number of pages	4
Journal	Nano Letters
Volume	9
Issue number	11
DOIs	https://doi.org/10.1021/nl9021623
Publication status	Published - 11 Dec 2009

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abstract = "We demonstrate circular dichrolsm (CD) in the second harmonic generation (SHG) signal from chiral assemblies of G-shaped nanostructures made of gold. The arrangement of the G shapes is crucial since upon reordering them the SHG-CD effect disappears. Microscopy reveals SHG {"}hotspots{"} assemblies, which originate in enantiomerically sensitive plasmon modes, having the novel property of exhibiting a chiral geometry themselves in relation with the handedness of the material. These results open new frontiers in studying chirality.",

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T2 - Switching circular dichroism by arranging chiral nanostructures

AU - Valev, V. K.

AU - Smisdom, N.

AU - Silhanek, A. V.

AU - De Clercq, B.

AU - Gillijns, W.

AU - Ameloot, M.

AU - Moshchalkov, V. V.

AU - Verbiest, T.

PY - 2009/12/11

Y1 - 2009/12/11

N2 - We demonstrate circular dichrolsm (CD) in the second harmonic generation (SHG) signal from chiral assemblies of G-shaped nanostructures made of gold. The arrangement of the G shapes is crucial since upon reordering them the SHG-CD effect disappears. Microscopy reveals SHG "hotspots" assemblies, which originate in enantiomerically sensitive plasmon modes, having the novel property of exhibiting a chiral geometry themselves in relation with the handedness of the material. These results open new frontiers in studying chirality.

AB - We demonstrate circular dichrolsm (CD) in the second harmonic generation (SHG) signal from chiral assemblies of G-shaped nanostructures made of gold. The arrangement of the G shapes is crucial since upon reordering them the SHG-CD effect disappears. Microscopy reveals SHG "hotspots" assemblies, which originate in enantiomerically sensitive plasmon modes, having the novel property of exhibiting a chiral geometry themselves in relation with the handedness of the material. These results open new frontiers in studying chirality.

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JO - Nano Letters

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ER -

Plasmonic ratchet wheels: Switching circular dichroism by arranging chiral nanostructures

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