%0 Journal Article %1 WOS:000447954200011 %A Mueller, Niclas S %A Vieira, Bruno G M %A Schulz, Florian %A Kusch, Patryk %A Oddone, Valerio %A Barros, Eduardo B %A Lange, Holger %A Reich, Stephanie %C 1155 16TH ST, NW, WASHINGTON, DC 20036 USA %D 2018 %I AMER CHEMICAL SOC %J ACS PHOTONICS %K (FDTD)} bilayer; finite-difference gold microabsorbance nanoparticles; plasmon; sel-fassembly; spectroscopy; time-domain {dark %N 10 %P 3962-3969 %R 10.1021/acsphotonics.8b00898 %T Dark Interlayer Plasmons in Colloidal Gold Nanoparticle Bi- and Few-Layers %V 5 %X We demonstrate the excitation of dark plasmon modes with linearly polarized light at normal incidence in self-assembled layers of gold nanoparticles. Because of field retardation, the incident light field induces plasmonic dipoles that are parallel within each layer but antiparallel between the layers, resulting in a vanishing net dipole moment. Using microabsorbance spectroscopy we measured a pronounced absorbance peak and reflectance dip at 1.5 eV for bi- and trilayers of gold nanoparticles with a diameter of 46 nm and 2 nm interparticle gap size. The excitations were identified as dark interlayer plasmons by finite-difference time-domain simulations. The dark plasmon modes are predicted to evolve into standing waves when further increasing the layer number, which leads to 90% transmittance of the incident light through the nanoparticle film. Our approach is easy to implement and paves the way for large-area coatings with tunable plasmon resonance.

@article{WOS:000447954200011, abstract = {We demonstrate the excitation of dark plasmon modes with linearly polarized light at normal incidence in self-assembled layers of gold nanoparticles. Because of field retardation, the incident light field induces plasmonic dipoles that are parallel within each layer but antiparallel between the layers, resulting in a vanishing net dipole moment. Using microabsorbance spectroscopy we measured a pronounced absorbance peak and reflectance dip at 1.5 eV for bi- and trilayers of gold nanoparticles with a diameter of 46 nm and 2 nm interparticle gap size. The excitations were identified as dark interlayer plasmons by finite-difference time-domain simulations. The dark plasmon modes are predicted to evolve into standing waves when further increasing the layer number, which leads to 90% transmittance of the incident light through the nanoparticle film. Our approach is easy to implement and paves the way for large-area coatings with tunable plasmon resonance.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA}, author = {Mueller, Niclas S and Vieira, Bruno G M and Schulz, Florian and Kusch, Patryk and Oddone, Valerio and Barros, Eduardo B and Lange, Holger and Reich, Stephanie}, biburl = {https://www.bibsonomy.org/bibtex/2fa8041d38a44f4232b64b420af7d83fc/ppgfis_ufc_br}, doi = {10.1021/acsphotonics.8b00898}, interhash = {d3b33004bd84b9061bccffeacf193a02}, intrahash = {fa8041d38a44f4232b64b420af7d83fc}, issn = {2330-4022}, journal = {ACS PHOTONICS}, keywords = {(FDTD)} bilayer; finite-difference gold microabsorbance nanoparticles; plasmon; sel-fassembly; spectroscopy; time-domain {dark}, number = 10, pages = {3962-3969}, publisher = {AMER CHEMICAL SOC}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Dark Interlayer Plasmons in Colloidal Gold Nanoparticle Bi- and Few-Layers}, tppubtype = {article}, volume = 5, year = 2018 }