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Galvanic Replacement Reaction to prepare nanoporous Aluminum for UV plasmonics
Denis Garoli, Giorgia Giovannini, Sandro Cattarin +9
Plasmonics applications have been extending into the ultraviolet region of the electromagnetic spectrum. Unfortunately the commonly used noble metals have intrinsic optical propert…
Electrophoretic deposition of WS2 flakes on nanoholes arrays. Role of the used suspension medium
Dario Mosconi, Giorgia Giovannini, Nicolo Maccaferri +4
Here we optimized the electrophoretic deposition process for the fabrication of WS2 plasmonic nanohole integrated structures. We showed how the conditions used for the site selecti…
Nanoparticles manipulation in 3D nanotips excited with plasmonic vortex
Xue Jin Zhang, Yuefeng Shen, Kai Liu +4
Recent advances in nanotechnologies have prompted the need for tools to accurately and non invasively manipulate individual nanoobjects. Among the possible strategies, optical forc…
Chemically-controlled self-assembly of hybrid plasmonic nanopores on graphene
Giorgia Giovannini, Matteo Ardini, Nicolo Maccaferri +6
Thanks to the spontaneous interaction between noble metals and biological scaffolds, nanomaterials with unique features can be achieved following relatively straightforward and cos…
SERS discrimination of single amino acid residue in single peptide by plasmonic nanocavities
Jian-An Huang, Mansoureh Z. Mousavi, Giorgia Giovannini +4
Surface-enhanced Raman spectroscopy (SERS) is a sensitive label-free optical method that can provide fingerprint Raman spectra of biomolecules such as DNA, amino acids and proteins…
Hybrid Metal-Dielectric Plasmonic Zero Mode Waveguide for Enhanced Single Molecule Detection
Xavier Zambrana-Puyalto, Paolo Ponzellini, Nicolo Maccaferri +6
We fabricated hybrid metal-dielectric nanoantennas and measured their optical response at three different wavelengths. The nanostructure is fabricated on a bilayer film formed by t…
Nanoporous Aluminum-Magnesium Alloy for UV enhanced spectroscopy
Paolo Ponzellini, Giorgia Giovannini, Sandro Cattarin +11
We report the first preparation of nanoporous Al-Mg alloy films by selective dissolution of Mg from a Mg-rich AlxMg1-x alloy. We show how to tune the stoichiometry, the porosity an…
Single-molecule DNA Bases Discrimination in Oligonucleotides by Controllable Trapping in Plasmonic Nanoholes
Jian-An Huang, Mansoureh Z. Mousavi, Yingqi Zhao +6
Surface-enhanced Raman spectroscopy (SERS) sensing of DNA sequences by plasmonic nanopores could pave a way to new generation single-molecule sequencing platforms. The SERS discrim…
3D Nanoporous Antennas for high sensitivity IR plasmonic sensing
Eugenio Calandrini, Giorgia Giovannini, Denis Garoli
Nanoporous gold can be exploited as plasmonic material for enhanced spectroscopy both in the visible and in the near infrared spectral regions. In particular, with respect to bulk…
High sensitivity nanoporous gold metamaterials for plasmonic sensing
Denis Garoli, Eugenio Calandrini, Giorgia Giovannini +3
Surface Plasmon Resonance sensors are a well-established class of sensors which includes a very large variety of materials and detection schemes. However, the development of portab…
Pump-probe Spectroscopy Study of Ultrafast Temperature Dynamics in Nanoporous Gold
Michele Ortolani, Andrea Mancini, Arne Budweg +3
We explore the influence of the nanoporous structure on the thermal relaxation of electrons and holes excited by ultrashort laser pulses ( fs) in thin gold films. Plasmon d…