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Nanomaterials
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Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021
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Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 9144

Special Issue Editors

Prof. Dr. Jose L. Arias

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Guest Editor
Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja s/n, 18071 Granada, Spain
Interests: active drug targeting; biomedical applications of colloids and nanoparticles; biopharmacy; drug absorption; drug delivery; drug release; formulation and evaluation of pharmaceutical dosage forms; hyperthermia-based anticancer treatment; in vivo fate of nanoplatforms; ligand-receptor interactions and nanoparticle endocytosis; long-circulating nanoparticles; magnetic colloids; nanoteranosis; passive drug targeting; PEGylated nanoparticles; pharmaceutical technology; pharmacokinetics; stimuli sensitive nanostructures; surface chemistry and interface science; surface functionalization of nanoparticles
Special Issues, Collections and Topics in MDPI journals
Dr. Mazen M. El-Hammadi

E-Mail Website
Guest Editor
Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Seville, 41012 Sevilla, Spain
Interests: pharmaceutical nanotechnology; polymeric drug and gene delivery systems; pharmaceutical formulation

Special Issue Information

Dear Colleagues,

Early-stage researchers are emerging leaders, and the recognition of their contribution to cutting-edge research and the promotion of their visibility is of vital importance for the advancement of science. Nanostructured materials are attracting huge interest due to a plethora of exciting applications in science and industry. As guest editors of this Special Issue, we are delighted to invite early-career investigators in the field of interfacial phenomena and nanoparticle engineering from all around the world to take part. This Special Issue accepts manuscripts in the form of original research articles or reviews, where the corresponding author is fewer than 12 years from completion of their doctoral degree. This Special Issue aims at bringing together the latest high-quality contributions from talented researchers actively working in all fields of interfacial phenomena and nanoparticle engineering at the early stages of their careers. Manuscripts focusing on the design of nanoparticles with applications related but not limited to engineering, chemistry, physics, biotechnology, and biomedicine are welcomed.

We look forward to receiving your contributions.

Prof. Dr. Jose L. Arias
Dr. Mazen M. El-Hammadi
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.

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

  • Carbon-based nanostructures
  • Inorganic-based nanostructures
  • Organic-based nanostructures
  • Composite-based nanostructures
  • Nanofibers
  • Nanoparticle engineering
  • Nanotubes
  • Nanowires
  • Nanolayers
  • Interfacial phenomena

Published Papers (4 papers)

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Research

12 pages, 2241 KiB  
Article
Dispersion Theory of Surface Plasmon Polaritons on Bilayer Graphene Metasurfaces
by Yong-Qiang Liu, Zhongru Ren, Hongcheng Yin, Jinhai Sun and Liangsheng Li
Nanomaterials 2022, 12(11), 1804; https://doi.org/10.3390/nano12111804 - 25 May 2022
Cited by 5 | Viewed by 1913
Abstract
Surface plasmon polaritons (SPPs) on the graphene metasurfaces (GSPs) are crucial to develop a series of novel functional devices that can merge the well-established plasmonics and novel nanomaterials. Dispersion theory on GSPs is an important aspect, which can provide a basic understanding of [...] Read more.
Surface plasmon polaritons (SPPs) on the graphene metasurfaces (GSPs) are crucial to develop a series of novel functional devices that can merge the well-established plasmonics and novel nanomaterials. Dispersion theory on GSPs is an important aspect, which can provide a basic understanding of propagating waves and further guidance for potential applications based on graphene metamaterials. In this paper, the dispersion theory and its modal characteristics of GSPs on double-layer graphene metasurfaces consisting of the same upper and lower graphene micro-ribbon arrays deposited on the dielectric medium are presented. In order to obtain its dispersion expressions of GSP mode on the structure, an analytical approach is provided by directly solving the Maxwell’s equations in each region and then applying periodical conductivity boundary onto the double interfaces. The obtained dispersion expressions show that GSPs split into two newly symmetric and antisymmetric modes compared to that on the single graphene metasurface. Further, the resultant dispersion relation and its propagating properties as a function of some important physical parameters, such as spacer, ribbon width, and substrate, are treated and investigated in the Terahertz band, signifying great potentials in constructing various novel graphene-based plasmonic devices, such as deeply sub-wavelength waveguides, lenses, sensors, emitters, etc. Full article
(This article belongs to the Special Issue Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021)
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16 pages, 8716 KiB  
Article
Preparing Copper Nanoparticles and Flexible Copper Conductive Sheets
by Gui-Bing Hong, Jia-Fang Wang, Kai-Jen Chuang, Hsiu-Yueh Cheng, Kai-Chau Chang and Chih-Ming Ma
Nanomaterials 2022, 12(3), 360; https://doi.org/10.3390/nano12030360 - 23 Jan 2022
Cited by 6 | Viewed by 3974
Abstract
Nanotechnology is used in a wide range of fields, including medicine, cosmetics, and new material development, and is one of the most popular technologies in the field of flexible electronic products. For the present work, the chemical reduction method with environmentally friendly reducing [...] Read more.
Nanotechnology is used in a wide range of fields, including medicine, cosmetics, and new material development, and is one of the most popular technologies in the field of flexible electronic products. For the present work, the chemical reduction method with environmentally friendly reducing agents was used to synthesize copper nanoparticles (CuNPs) with good dispersibility. The CuNPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and ultraviolet–visible spectrophotometry (UV–vis). After the CuNPs were formed, the solvent, polymers, and additives were added to form copper ink. Finally, the prepared copper inks were applied to flexible polyethylene terephthalate (PET) substrate under low sintering temperature and the effects of sintering time and different concentrations of sintering agent on resistivity were investigated. The results show that the copper nanoparticles synthesized by secondary reduction were smaller, more uniform, and better dispersed than those formed by primary reduction. Ethylene glycol has reducing effects under high temperatures; therefore, the CuNPs formed using the mixed solvent were small and well dispersed. The copper ink was applied on the PET substrate, treated with a formic acid aqueous solution, and sintered at 130 °C for 60 min, and its resistivity was about 1.67 × 10−3 Ω cm. The proposed synthesizing method is expected to have potential applications in the flexible electronic products field. Full article
(This article belongs to the Special Issue Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021)
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18 pages, 2559 KiB  
Article
Simultaneous Influence of Gradients in Natural Organic Matter and Abiotic Parameters on the Behavior of Silver Nanoparticles in the Transition Zone from Freshwater to Saltwater Environments
by Ivana Čarapar, Lara Jurković, Dijana Pavičić-Hamer, Bojan Hamer and Daniel Mark Lyons
Nanomaterials 2022, 12(2), 296; https://doi.org/10.3390/nano12020296 - 17 Jan 2022
Cited by 7 | Viewed by 1789
Abstract
As nanoparticles have been found to cause a range of harmful impacts in biota, understanding processes and transformations which may stabilize and increase their persistence time in the environment are of great importance. As nanoparticles carried in riverine or wastewaters will eventually reach [...] Read more.
As nanoparticles have been found to cause a range of harmful impacts in biota, understanding processes and transformations which may stabilize and increase their persistence time in the environment are of great importance. As nanoparticles carried in riverine or wastewaters will eventually reach estuaries, understanding their behavior and transport potential in this transition zone from fresh to marine waters is essential, particularly as estuaries are sensitive ecological zones, oftentimes encompassing ornithologically important areas. In this direction, we report on the influence of combined gradients of riverine and marine natural organic matter (NOM) on the temporal stability of biocorona-encapsulated silver nanoparticles in terms of ion release kinetics. In parallel, salinity, pH and oxygen saturation were simultaneously varied to create a model to mimic the complex estuarine environment. While humic acid (HA) and alginate (Alg) disrupted the stabilizing ability of the nanoparticle protein corona to a greater and lesser degree, respectively, they slowed the rate of ion release in freshwater at pH 6.6 and in saltwater at pH 8, respectively, while oxygen saturation was also found to be an important factor. Thus, as the type of NOM changes with pH along a salinity gradient in an estuary, conditions required to increase the persistence time of nanoparticles are serendipitously met, with greater colloidal stability achieved in cases where there is more rapid replacement of HA with Alg. Despite the strong gradients in ionic strength, pH and oxygen saturation, the protein corona was not sufficiently disrupted at the nanoparticle surface to be substituted by NOM indicating the greater adsorption energy of the protein’s hydrophobic domains. Ultimately, it is the specific NOM profile of individual estuaries that may provide the best indicator for predicting the stability and persistence of silver nanoparticles as they transition from fresh to salt water environments. Full article
(This article belongs to the Special Issue Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021)
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14 pages, 15216 KiB  
Article
Facile Synthesis of Silver Nanoparticles and Preparation of Conductive Ink
by Gui Bing Hong, Yi Hua Luo, Kai Jen Chuang, Hsiu Yueh Cheng, Kai Chau Chang and Chih Ming Ma
Nanomaterials 2022, 12(1), 171; https://doi.org/10.3390/nano12010171 - 05 Jan 2022
Cited by 14 | Viewed by 2691
Abstract
In the scientific industry, sustainable nanotechnology has attracted great attention and has been successful in facilitating solutions to challenges presented in various fields. For the present work, silver nanoparticles (AgNPs) were prepared using a chemical reduction synthesis method. Then, a low-temperature sintering process [...] Read more.
In the scientific industry, sustainable nanotechnology has attracted great attention and has been successful in facilitating solutions to challenges presented in various fields. For the present work, silver nanoparticles (AgNPs) were prepared using a chemical reduction synthesis method. Then, a low-temperature sintering process was deployed to obtain an Ag-conductive ink preparation which could be applied to a flexible substrate. The size and shape of the AgNPs were characterized by ultraviolet–visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). The experiments indicated that the size and agglomeration of the AgNPs could be well controlled by varying the reaction time, reaction temperature, and pH value. The rate of nanoparticle generation was the highest when the reaction temperature was 100 °C within the 40 min reaction time, achieving the most satisfactorily dispersed nanoparticles and nanoballs with an average size of 60.25 nm at a pH value of 8. Moreover, the electrical resistivity of the obtained Ag-conductive ink is controllable, under the optimal sintering temperature and time (85 °C for 5 min), leading to an optimal electrical resistivity of 9.9 × 10−6 Ω cm. The results obtained in this study, considering AgNPs and Ag-conductive ink, may also be extended to other metals in future research. Full article
(This article belongs to the Special Issue Interfacial Phenomena and Nanoparticle Engineering—Spotlight on Early Career Investigators 2021)
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