Special Issue "Mechanics of Micro and Nano Structures and Materials"

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

Deadline for manuscript submissions: closed (28 August 2021).

Special Issue Editors

Prof. Dr. Rosa Penna
E-Mail Website
Guest Editor
Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
Interests: Composites and nano-composite materials; experimental investigation of composites materials (FRP); computational mechanics; multiscale numerical modeling and simulation of materials and structures; structural rehabilitation of masonry and reinforced concrete structures with FRP; full FRP composite structures; connections in composites structures; durability of high-performance fiber-reinforced concrete (HPFRC); concrete, rubber-like materials, nonlinear mechanics, Additive manufacturing, polymer-fiber composites, sustainability
Prof. Dr. Luciano Feo
E-Mail Website
Guest Editor
Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy
Interests: composites and nano-composites materials; experimental investigation of composites materials (FRP); computational mechanics; multiscale numerical modelling and simulation of materials and structures; computational design and engineering of innovative sustainable materials and infrastructures; structural rehabilitation of masonry and concrete structures with FRP; full FRP composite structures; connections in composites structures; durability of high performance fiber reinforced concrete (HPFRC)
Prof. Dr. Francesco Fabbrocino
E-Mail Website
Guest Editor
Department of Engineering, Telematic University Pegaso, Piazza Trieste e Trento, 48, 80132 Naples, Italy
Interests: composite materials; masonry structures; numerical modeling; mechanical engineering; bridge engineering; modal analysis; dynamics; civil engineering; materials engineering; experimental characterization; concrete durability
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Special Issue Information

Dear Colleagues,

Micro/nanoscale structures, in all their forms, are a new generation of small-scale structures with a wide range of potential applications in several fields of nanotechnology and nanoscience. In order to achieve micro/nanoelectromechanical systems (NEMS/MEMs) with enhanced functionality, the main structural components more and more often are made of functionally graded (FG) materials. Composites made of FG materials (FGMs) or reinforced through functionally graded carbon nanotube (FG-CNT) are a novel type of composite materials designed and fabricated in a way that their mechanical, electronic, and thermal properties vary gradually through preferred spatial directions so that problems related to the material discontinuities can be significantly reduced and high permeance requirements ensured. Among these engineering nanostructures, nanobeams have attracted more attention due to their engineering applications such as nano actuators, nano sensors, and atomic force microscope (AFM). Additive manufacturing or 3D printing is another emerging technology that has quickly gained attention in several industrial fields, paving the way for a whole new dimension of opportunities in manufacturing technology.

This Special Issue will be a peer-reviewed forum for the publication of original papers dealing with the most important issues regarding the mechanics of micro and nano structures and materials and their application to the design of innovative materials and structures, as well as capturing scientific advancements in the design and development of sustainable polymer-fiber composites, mainly for building applications, through the use of additive manufacturing or 3D printing technology.

Potential topics include but are not limited to the following: experimental and computational techniques in nanotechnology and nanoscience; nonlocal elasticity; nanoelectromechanical systems (NEMS) and the microelectromechanical systems (MEMS); bending; buckling; nonlinear free vibration; functionally graded (FG) sandwich nanobeams and nanoplates; strain and stress gradient models; concrete; rubber-like materials; nonlinear mechanics; additive manufacturing; polymer-fiber composites; sustainability.

Prof. Dr. Rosa Penna
Prof. Dr. Luciano Feo
Prof. Dr. Francesco Fabbrocino
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 papers will be 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 monthly 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 2200 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

  • Experimental and computational techniques in nanotechnology and nanoscience
  • Non Local Elasticity
  • Nanoelectromechanical systems (NEMS) and the microelectromechanical systems (MEMS)
  • Bending
  • Buckling
  • Nonlinear free vibration
  • Functionally graded (FG) sandwich nanobeams and nanoplates
  • strain and stress gradient models
  • concrete, rubber like materials, nonlinear mechanics, Additive manufacturing, polymer-fiber composites, sustainability

Published Papers (3 papers)

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Research

Article
Structural Monitoring of Glass Fiber/Epoxy Laminates by Means of Carbon Nanotubes and Carbon Black Self-Monitoring Plies
Nanomaterials 2021, 11(6), 1543; https://doi.org/10.3390/nano11061543 - 11 Jun 2021
Viewed by 631
Abstract
The health monitoring of structures is of great interest in order to check components’ structural life and monitor damages during operation. Self-monitoring materials can provide both the structural and monitoring functionality in one component and exploit their piezoresistive behavior, namely, the variation of [...] Read more.
The health monitoring of structures is of great interest in order to check components’ structural life and monitor damages during operation. Self-monitoring materials can provide both the structural and monitoring functionality in one component and exploit their piezoresistive behavior, namely, the variation of electrical resistivity with an applied mechanical strain. In this work, self-monitoring plies were developed to be inserted into glass-fiber reinforced epoxy-based laminates in order to achieve structural monitoring. Nanocomposite epoxy-based resins were developed employing different contents of high surface area carbon black (CB, 6 wt%) and multiwall carbon nanotubes (MWCNT, 0.75 and 1 wt%), and rheologically and thermomechanically characterized. Self-monitoring plies were manufactured by impregnating glass woven fabrics with the resins, and were laminated with non-sensing plies via a vacuum-bag process to produce sensored laminates. The self-monitoring performance of the laminates was assessed during monotonic and cyclic three-point bending tests, as well as ball drop impact tests. A higher sensitivity was found for the CB-based systems (Gauge Factor 6.1), while MWCNTs (0.55 and 1.04) ensure electrical percolation at lower filler contents, as expected. The systems also showed the capability of being used to predict residual life and damage occurred under impact. Full article
(This article belongs to the Special Issue Mechanics of Micro and Nano Structures and Materials)
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Article
Thermal and Quasi-Static Mechanical Characterization of Polyamide 6-Graphene Nanoplatelets Composites
Nanomaterials 2021, 11(6), 1454; https://doi.org/10.3390/nano11061454 - 31 May 2021
Cited by 1 | Viewed by 688
Abstract
The growing demand for lightweight and multifunctional products in numerous industrial fields has recently fuelled a growing interest in the development of materials based on polymer matrices including graphene-like particles, intrinsically characterized by outstanding mechanical, thermal, and electrical properties. Specifically, with regard to [...] Read more.
The growing demand for lightweight and multifunctional products in numerous industrial fields has recently fuelled a growing interest in the development of materials based on polymer matrices including graphene-like particles, intrinsically characterized by outstanding mechanical, thermal, and electrical properties. Specifically, with regard to one of the main mass sectors, which is the automotive, there has been a significant increase in the use of reinforced polyamides for underhood applications and fuel systems thanks to their thermal and chemical resistance. In this frame, polyamide 6 (PA6) composites filled with graphene nanoplatelets (GNPs) were obtained by melt-compounding and compared in terms of thermal and mechanical properties with the neat matrix processed under the same condition. The results of the experimental tests have shown that the formulations studied so far offer slight improvements in terms of thermal stability but much more appreciable benefits regarding both tensile and flexural parameters with respect to the reference material. Among these effects, the influence of the filler content on the strength parameter is noteworthy. However, the predictable worsening of the graphene sheet dispersion for GNPs contents greater than 3%, as witnessed by scanning electron images of the tensile fractured sections of specimens, affected the ultimate performance of the more concentrated formulation. Full article
(This article belongs to the Special Issue Mechanics of Micro and Nano Structures and Materials)
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Article
Hygro-Thermal Vibrations of Porous FG Nano-Beams Based on Local/Nonlocal Stress Gradient Theory of Elasticity
Nanomaterials 2021, 11(4), 910; https://doi.org/10.3390/nano11040910 - 02 Apr 2021
Cited by 1 | Viewed by 487
Abstract
In this manuscript the dynamic response of porous functionally-graded (FG) Bernoulli–Euler nano-beams subjected to hygro-thermal environments is investigated by the local/nonlocal stress gradient theory of elasticity. In particular, the influence of several parameters on both the thermo-elastic material properties and the structural response [...] Read more.
In this manuscript the dynamic response of porous functionally-graded (FG) Bernoulli–Euler nano-beams subjected to hygro-thermal environments is investigated by the local/nonlocal stress gradient theory of elasticity. In particular, the influence of several parameters on both the thermo-elastic material properties and the structural response of the FG nano-beams, such as material gradient index, porosity volume fraction, nonlocal parameter, gradient length parameter, and mixture parameter is examined. It is shown how the proposed approach is able to capture the dynamic behavior of porous functionally graded Bernoulli–Euler nano-beams under hygro-thermal loads and leads to well-posed structural problems of nano-mechanics. Full article
(This article belongs to the Special Issue Mechanics of Micro and Nano Structures and Materials)
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