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Nanomaterials
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State-of-the-Art Nanophotonics Materials and Devices in Italy
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State-of-the-Art Nanophotonics Materials and Devices in Italy

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 8374

Special Issue Editor

Dr. Neda Ghofraniha

E-Mail Website
Guest Editor
Istituto Dei Sistemi Complessi-Consiglio Nazionale delle Ricerche, Rome, Italy
Interests: photonics in complex systems; integrated photonics; nonlinear optics; miniaturised optical cavities; enhanced fluorescent spectroscopy; plasmonics

Special Issue Information

Dear Colleagues,

Nanophotonics is an incredibly quickly growing branch of research with roots in fundamental physics and spreading nowadays to numerous and diverse fields of interest: from telecommunication engineering to biology, from solar cells to cancer cure.

In Italy, several research groups work in nanophotonics, searching for the smallest detector and light source, studying fundamental quantum effects, developing advanced microscopic techniques, investigating quantum fluids and polariton dynamics, fabricating integrated photonic devices, and gaining the advantage of plasmonic effects in drug delivery and biomedicine.

The aim of this Special Issue is to put together all of the Italian expertise in these fields and to produce a collection of the main results. 

The format of welcomed articles includes full papers, communications, and reviews. Potential topics include, but are not limited to:

  • Plasmonics: fundamentals of light-matter interaction at nanoscale
  • Advanced microscopy and spectroscopy
  • Single photon detectors and sources
  • Graphene photonics
  • Integrated and on chip photonic devices
  • Advanced techniques and research in biomedicine
  • Plasmon polaritons and polaritonic devices
  • Bose–Einstein condensation

Dr. Neda Ghofraniha
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • plasmonics
  • quantum photonics
  • polaritons
  • graphene photonics
  • integrated photonics
  • advanced microscopy

Published Papers (4 papers)

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Research

20 pages, 4327 KiB  
Article
Responsivity of Fractal Nanoparticle Assemblies to Multiple Stimuli: Structural Insights on the Modulation of the Optical Properties
by Angela Capocefalo, Thomas Bizien, Simona Sennato, Neda Ghofraniha, Federico Bordi and Francesco Brasili
Nanomaterials 2022, 12(9), 1529; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12091529 - 01 May 2022
Cited by 4 | Viewed by 1784
Abstract
Multi-responsive nanomaterials based on the self-limited assembly of plasmonic nanoparticles are of great interest due to their widespread employment in sensing applications. We present a thorough investigation of a hybrid nanomaterial based on the protein-mediated aggregation of gold nanoparticles at varying protein concentration, [...] Read more.
Multi-responsive nanomaterials based on the self-limited assembly of plasmonic nanoparticles are of great interest due to their widespread employment in sensing applications. We present a thorough investigation of a hybrid nanomaterial based on the protein-mediated aggregation of gold nanoparticles at varying protein concentration, pH and temperature. By combining Small Angle X-ray Scattering with extinction spectroscopy, we are able to frame the morphological features of the formed fractal aggregates in a theoretical model based on patchy interactions. Based on this, we established the main factors that determine the assembly process and their strong correlation with the optical properties of the assemblies. Moreover, the calibration curves that we obtained for each parameter investigated based on the extinction spectra point out to the notable flexibility of this nanomaterial, enabling the selection of different working ranges with high sensitivity. Our study opens for the rational tuning of the morphology and the optical properties of plasmonic assemblies to design colorimetric sensors with improved performances. Full article
(This article belongs to the Special Issue State-of-the-Art Nanophotonics Materials and Devices in Italy)
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14 pages, 3602 KiB  
Communication
Novel Tools to Measure Single Molecules Colocalization in Fluorescence Nanoscopy by Image Cross Correlation Spectroscopy
by Simone Pelicci, Laura Furia, Mirco Scanarini, Pier Giuseppe Pelicci, Luca Lanzanò and Mario Faretta
Nanomaterials 2022, 12(4), 686; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12040686 - 18 Feb 2022
Cited by 7 | Viewed by 2941
Abstract
Super Resolution Microscopy revolutionized the approach to the study of molecular interactions by providing new quantitative tools to describe the scale below 100 nanometers. Single Molecule Localization Microscopy (SMLM) reaches a spatial resolution less than 50 nm with a precision in calculating molecule [...] Read more.
Super Resolution Microscopy revolutionized the approach to the study of molecular interactions by providing new quantitative tools to describe the scale below 100 nanometers. Single Molecule Localization Microscopy (SMLM) reaches a spatial resolution less than 50 nm with a precision in calculating molecule coordinates between 10 and 20 nanometers. However new procedures are required to analyze data from the list of molecular coordinates created by SMLM. We propose new tools based on Image Cross Correlation Spectroscopy (ICCS) to quantify the colocalization of fluorescent signals at single molecule level. These analysis procedures have been inserted into an experimental pipeline to optimize the produced results. We show that Fluorescent NanoDiamonds targeted to an intracellular compartment can be employed (i) to correct spatial drift to maximize the localization precision and (ii) to register confocal and SMLM images in correlative multiresolution, multimodal imaging. We validated the ICCS based approach on defined biological control samples and showed its ability to quantitatively map area of interactions inside the cell. The produced results show that the ICCS analysis is an efficient tool to measure relative spatial distribution of different molecular species at the nanoscale. Full article
(This article belongs to the Special Issue State-of-the-Art Nanophotonics Materials and Devices in Italy)
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14 pages, 3221 KiB  
Article
Shape Modulation of Plasmonic Nanostructures by Unconventional Lithographic Technique
by Adriano Colombelli, Daniela Lospinoso, Roberto Rella and Maria Grazia Manera
Nanomaterials 2022, 12(3), 547; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12030547 - 05 Feb 2022
Cited by 6 | Viewed by 1797
Abstract
Conventional nano-sphere lithography techniques have been extended to the fabrication of highly periodic arrays of sub-wavelength nanoholes in a thin metal film. By combining the dry etching processes of self-assembled monolayers of polystyrene colloids with metal physical deposition, the complete transition from increasing [...] Read more.
Conventional nano-sphere lithography techniques have been extended to the fabrication of highly periodic arrays of sub-wavelength nanoholes in a thin metal film. By combining the dry etching processes of self-assembled monolayers of polystyrene colloids with metal physical deposition, the complete transition from increasing size triangular nanoprism to hexagonally distributed nanoholes array onto thin metal film has been gradually explored. The investigated nano-structured materials exhibit interesting plasmonic properties which can be precisely modulated in a desired optical spectral region. An interesting approach based on optical absorbance measurements has been adopted for rapid and non-invasive inspections of the nano-sphere monolayer after the ion etching process. By enabling an indirect and accurate evaluation of colloid dimensions in a large area, this approach allows the low-cost and reproducible fabrication of plasmonic materials with specifically modulated optical properties suitable for many application in biosensing devices or Raman enhanced effects. Full article
(This article belongs to the Special Issue State-of-the-Art Nanophotonics Materials and Devices in Italy)
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11 pages, 1683 KiB  
Article
Infrared Nanospectroscopy Reveals DNA Structural Modifications upon Immobilization onto Clay Nanotubes
by Federica Piccirilli, Franco Tardani, Annalisa D’Arco, Giovanni Birarda, Lisa Vaccari, Simona Sennato, Stefano Casciardi and Stefano Lupi
Nanomaterials 2021, 11(5), 1103; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11051103 - 24 Apr 2021
Cited by 11 | Viewed by 2721
Abstract
The growing demand for innovative means in biomedical, therapeutic and diagnostic sciences has led to the development of nanomedicine. In this context, naturally occurring tubular nanostructures composed of rolled sheets of alumino-silicates, known as halloysite nanotubes, have found wide application. Halloysite nanotubes indeed [...] Read more.
The growing demand for innovative means in biomedical, therapeutic and diagnostic sciences has led to the development of nanomedicine. In this context, naturally occurring tubular nanostructures composed of rolled sheets of alumino-silicates, known as halloysite nanotubes, have found wide application. Halloysite nanotubes indeed have surface properties that favor the selective loading of biomolecules. Here, we present the first, to our knowledge, structural study of DNA-decorated halloysite nanotubes, carried out with nanometric spatially-resolved infrared spectroscopy. Single nanotube absorption measurements indicate a partial covering of halloysite by DNA molecules, which show significant structural modifications taking place upon loading. The present study highlights the constraints for the use of nanostructured clays as DNA carriers and demonstrates the power of super-resolved infrared spectroscopy as an effective and versatile tool for the evaluation of immobilization processes in the context of drug delivery and gene transfer. Full article
(This article belongs to the Special Issue State-of-the-Art Nanophotonics Materials and Devices in Italy)
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