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Plasmonic Nanomaterials from Physics and Chemistry Fundamentals to Societal Impacts

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (31 January 2020) | Viewed by 3716

Special Issue Editor


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Guest Editor
Bernal Chair of Microscopy and Imaging, Department of Physics and Energy, University of Limerick, Limerick, Ireland
Interests: nano- and 2D-materials, including 2-D ferro-electrics and multiferroics; controlled functionalization of 2-D materials via ion-implantation; revelation of atomic constellations (down to the sub-atomic level) and highly localized band-structure studies of nano-materials via advanced transmission electron-microscopy and -spectroscopy
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Special Issue Information

Dear Colleagues,

The area of nano-plasmonics, which is part of nano-photonics and nano-optics, constitutes a young topic of research, rich in phenomena that have inspired huge new practical uses in IT, energy harvesting, environmental monitoring, radar communication, biomedicine, and national security. Nano-plasmonics concerns the investigation of electron oscillations in conducting nano-structures and nano-particles. Surface plasmons have the unique capacity to confine light at the nanoscale, and moreover, they are very sensitive to the surrounding medium and the properties of the materials on which they propagate. They can be controlled by adjusting the size, shape, periodicity, and materials' nature. Due to the large local field enhancement, the most intense plasmonic fields usually appear within narrow gaps, so-called “hotspots”, between the adjacent nanostructures, especially when the separation goes down to the subnanometer scale, leading to the localisation of optical fields on scales with orders of magnitude smaller than the wavelength of light. However, experimentally probing, invetigating, and controlling the plasmonic fields in such tiny volumes still challenges nano-fabrication and detection techniques.

In terms of their application impact, plasmonic waveguides and optical circuits have made significant advances. Frequnecies can be tailored from UV down to microwave and radio frequencies. Plasmonic properties enable a great number of applications in devices with additionally increased efficiency, such as optical modulators, photodetectors, photovoltaic and photocatalitic devices, dielectric resonator antennae and biosensors for the ultrasensitive detection of protein molecules, and the design of new diagnostic strategies.

The aim of this Special Issue is to attract leading researchers in the area of nano-plasmonics to highlight the latest developments, and to illustrate and promote the newest and concrete applications. Accepted contributions will include presentations of fundamental physics and properties; the design and fabrication of nano-plasmonic materials; and their applications in photonics, optical communication, health monitoring, renewable energy technology, waste management, IT, and computing.

Prof. Dr. Ursel Bangert
Guest Editors

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.

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Keywords

  • plasmons in nano-particles
  • plasmons in 2D and 1D materials
  • surface plasmons and polaritons
  • plasmon confinement
  • plasmon enhancement
  • characterisation techniques and procedures  
  • structural and optical characterisation
  • materials design and fabrication
  • processes activated by enhanced light emission and absorption
  • plasmon applications in IT, photovoltaics, photocatalysis, diagnostic strategies, energy production and harvesting, optical communication, and computing
  • organic and polymer photonics, and molecular nano-photonics
  • waveguides
  • lasers and LEDs
  • photodetectors
  • lasers, LEDs, and photodetectors lasers, LEDs, and photodetectors lasers, LEDs, and photodetectors lasers, LEDs, and photodetectors. lasers, LEDs, and photodetectors. lasers, LEDs, and photodetectors. lasers, LEDs, and photodetectors.sensors, including bio-sensors for protein molecule detection
  • nano-antennae

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Published Papers (1 paper)

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Review

36 pages, 2117 KiB  
Review
Plasmons and Plasmon–Polaritons in Finite Ionic Systems: Toward Soft-Plasmonics of Confined Electrolyte Structures
by Janusz Jacak and Witold Jacak
Appl. Sci. 2019, 9(6), 1159; https://doi.org/10.3390/app9061159 - 19 Mar 2019
Cited by 8 | Viewed by 3335
Abstract
We address the field of soft plasmonics in finite electrolyte liquid systems ranged by insulating membranes by an analogy to the plasmonics of metallic nanostructures. The confined electrolyte systems can be encountered on a bio-cell organizational level, taking into account that the characteristics [...] Read more.
We address the field of soft plasmonics in finite electrolyte liquid systems ranged by insulating membranes by an analogy to the plasmonics of metallic nanostructures. The confined electrolyte systems can be encountered on a bio-cell organizational level, taking into account that the characteristics of ion plasmons fall to the micrometer size scale instead of the nanometer in metals because of at least three orders of magnitude larger masses of ions in comparison to electrons. The lower density of ions in electrolytes in comparison to density of electrons in metal may also reduce the energy of plasmons by several orders. We provide the fully analytical description of surface and volume plasmons in finite ionic micro-systems allowing for further applications. We next apply the theory of ionic plasmons to plasmon–polaritons in ionic periodic systems. The complete theory of ionic plasmon–polariton kinetics in the chain of micrometer-sized electrolyte spheres, confined by a dielectric membrane, is formulated and solved. The latter theory has next been applied to the explanation of a mysterious and unclear (for several dozen of years) problem of so-called saltatory conduction of the action potential in myelinated axons of nerve cells. Contrary to conventional models of nerve signaling, the plasmon–polariton model pretty well fits to the queer properties of the saltatory conduction. Moreover, the presented application of soft plasmonics to signaling in periodically myelinated axons may allow for identification of a different role in information processing of the white and gray matters in brain and spinal cord. We have outlined some perspectives to utilize the difference between the electricity of myelinated and non-myelinated nerve cells in brain to develop the topological concept of the memory functioning. The proposed ionic plasmon–polariton model of the saltatory conduction differently recognizes the role of the insulating myelin than previously was thought which may be helpful in the development of a better understanding of the demyelination diseases. Full article
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