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Synchrotron Radiation in Nanomaterials Research: A Themed Issue in Honor...
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Synchrotron Radiation in Nanomaterials Research: A Themed Issue in Honor of Dr. Claudio Ferrero

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (10 October 2023) | Viewed by 4670

Special Issue Editor

Dr. Alessandro Cunsolo

E-Mail Website
Guest Editor
Physics Department, University of Wisconsin-Madison, Madison, WI 53706-1390, USA
Interests: spectroscopy of disorder or partially ordered systems-inelastic X-ray scattering-phonons
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Modern nanotechnology enables precise structure design and manipulation down to mesoscopic scales, which correspond to distances approaching first neighboring atoms separations in condensed materials. These nanostructures hold the promise of novel functionalities lending themselves to uncharted applications in science and technology. Investigating the exotic properties of these nanoscale materials is the natural realm of synchrotron light research and encompasses an impressive variety of probe techniques.

This Special Issue explores new opportunities opened up by synchrotron-based measurements in nanostructures with the specific intent of honoring the memory of Claudio Ferrero.

Claudio was an accomplished scientist who devoted his entire career to expanding the capabilities of synchrotron-based research in complex materials. He had the undoubted merit of improving the robustness and efficiency of data analysis, as required to manage the large amount of data generated by high-throughput state-of-the-art synchrotron instrumentation. His unique human and scientific skills also enabled him to entertain quite diverse scientific collaborations that I hope to see reflected by the various contributors to this Issue.

Dr. Alessandro Cunsolo
Guest Editor

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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.

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Keywords

  • synchrotron research
  • nanostructures
  • nanoparticles
  • complex materials
  • condensed matter physics
  • scattering
  • diffraction
  • data analysis

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Published Papers (3 papers)

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Research

24 pages, 9920 KiB  
Article
Decoding the Atomic Structure of Ga2Te5 Pulsed Laser Deposition Films for Memory Applications Using Diffraction and First-Principles Simulations
by Andrey Tverjanovich, Chris J. Benmore, Maxim Khomenko, Anton Sokolov, Daniele Fontanari, Sergei Bereznev, Maria Bokova, Mohammad Kassem and Eugene Bychkov
Nanomaterials 2023, 13(14), 2137; https://doi.org/10.3390/nano13142137 - 23 Jul 2023
Cited by 1 | Viewed by 1107
Abstract
Neuromorphic computing, reconfigurable optical metamaterials that are operational over a wide spectral range, holographic and nonvolatile displays of extremely high resolution, integrated smart photonics, and many other applications need next-generation phase-change materials (PCMs) with better energy efficiency and wider temperature and spectral ranges [...] Read more.
Neuromorphic computing, reconfigurable optical metamaterials that are operational over a wide spectral range, holographic and nonvolatile displays of extremely high resolution, integrated smart photonics, and many other applications need next-generation phase-change materials (PCMs) with better energy efficiency and wider temperature and spectral ranges to increase reliability compared to current flagship PCMs, such as Ge2Sb2Te5 or doped Sb2Te. Gallium tellurides are favorable compounds to achieve the necessary requirements because of their higher melting and crystallization temperatures, combined with low switching power and fast switching rate. Ga2Te3 and non-stoichiometric alloys appear to be atypical PCMs; they are characterized by regular tetrahedral structures and the absence of metavalent bonding. The sp3 gallium hybridization in cubic and amorphous Ga2Te3 is also different from conventional p-bonding in flagship PCMs, raising questions about its phase-change mechanism. Furthermore, gallium tellurides exhibit a number of unexpected and highly unusual phenomena, such as nanotectonic compression and viscosity anomalies just above their melting points. Using high-energy X-ray diffraction, supported by first-principles simulations, we will elucidate the atomic structure of amorphous Ga2Te5 PLD films, compare it with the crystal structure of tetragonal gallium pentatelluride, and investigate the electrical, optical, and thermal properties of these two materials to assess their potential for memory applications, among others. Full article
(This article belongs to the Special Issue Synchrotron Radiation in Nanomaterials Research: A Themed Issue in Honor of Dr. Claudio Ferrero)
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12 pages, 3787 KiB  
Article
The Effect of Embedded Nanoparticles on the Phonon Spectrum of Ice: An Inelastic X-ray Scattering Study
by Alessio De Francesco, Luisa Scaccia, Ferdinando Formisano, Eleonora Guarini, Ubaldo Bafile, Dmytro Nykypanchuk, Ahmet Alatas, Mingda Li, Scott T. Lynch and Alessandro Cunsolo
Nanomaterials 2023, 13(5), 918; https://doi.org/10.3390/nano13050918 - 1 Mar 2023
Cited by 3 | Viewed by 1496
Abstract
As a contribution to the ongoing effort toward high-frequency sound manipulation in composite materials, we use Inelastic X-ray Scattering to probe the phonon spectrum of ice, either in a pure form or with a sparse amount of nanoparticles embedded in it. The study [...] Read more.
As a contribution to the ongoing effort toward high-frequency sound manipulation in composite materials, we use Inelastic X-ray Scattering to probe the phonon spectrum of ice, either in a pure form or with a sparse amount of nanoparticles embedded in it. The study aims at elucidating the ability of nanocolloids to condition the collective atomic vibrations of the surrounding environment. We observe that a nanoparticle concentration of about 1 % in volume is sufficient to visibly affect the phonon spectrum of the icy substrate, mainly canceling its optical modes and adding nanoparticle phonon excitations to it. We highlight this phenomenon thanks to the lineshape modeling based on a Bayesian inference, which enables us to capture the finest detail of the scattering signal. The results of this study can empower new routes toward the shaping of sound propagation in materials through the control of their structural heterogeneity. Full article
(This article belongs to the Special Issue Synchrotron Radiation in Nanomaterials Research: A Themed Issue in Honor of Dr. Claudio Ferrero)
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12 pages, 3340 KiB  
Article
Altering Terahertz Sound Propagation in a Liquid upon Nanoparticle Immersion
by Alessio De Francesco, Ferdinando Formisano, Luisa Scaccia, Eleonora Guarini, Ubaldo Bafile, Marco Maccarini, Dmytro Nykypanchuck, Alexei Suvorov, Yong Q. Cai, Scott T. Lynch and Alessandro Cunsolo
Nanomaterials 2022, 12(14), 2401; https://doi.org/10.3390/nano12142401 - 14 Jul 2022
Cited by 2 | Viewed by 1520
Abstract
One of the grand challenges of new generation Condensed Matter physicists is the development of novel devices enabling the control of sound propagation at terahertz frequency. Indeed, phonon excitations in this frequency window are the leading conveyor of heat transfer in insulators. Their [...] Read more.
One of the grand challenges of new generation Condensed Matter physicists is the development of novel devices enabling the control of sound propagation at terahertz frequency. Indeed, phonon excitations in this frequency window are the leading conveyor of heat transfer in insulators. Their manipulation is thus critical to implementing heat management based on the structural design. To explore the possibility of controlling the damping of sound waves, we used high spectral contrast Inelastic X-ray Scattering (IXS) to comparatively study terahertz acoustic damping in a dilute suspension of 50 nm nanospheres in glycerol and on pure glycerol. Bayesian inference-based modeling of measured spectra indicates that, at sufficiently large distances, the spectral contribution of collective modes in the glycerol suspension becomes barely detectable due to the enhanced damping, the weakening, and the slight softening of the dominant acoustic mode. Full article
(This article belongs to the Special Issue Synchrotron Radiation in Nanomaterials Research: A Themed Issue in Honor of Dr. Claudio Ferrero)
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