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Nanomaterials
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Recent Advances and Applications in Nanomechanics
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Recent Advances and Applications in Nanomechanics

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanofabrication and Nanomanufacturing".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 3609

Special Issue Editors

Prof. Dr. Marko Čanađija

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Guest Editor
Faculty of Engineering, University of Rijeka, Rijeka, Croatia
Interests: nanomechanics; thermomechanics; machine learning in mechanics
Prof. Dr. Raffaele Barretta

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Guest Editor
Department of Structures for Engineering and Architecture, University of Naples Federico II, 80125 Naples, Italy
Interests: continuum mechanics; nanostructures; nonlocal models
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue marks the 30th anniversary of the discovery of carbon nanotubes by Sumio Iijima, which triggered an exponential growth of interest in nanoscience and nanotechnology, and its main objective is to collect innovative contributions on the size-dependent behaviour of nano-engineered materials and small-scale structures for the design and optimisation of micro- and nano-electro-mechanical systems. Nanomechanics can be conveniently exploited to describe technically significant scale phenomena which do not occur in classical aerospace, civil and mechanical engineering structures. The development of adequate models, rigorously verified by experiments or numerical calculations using molecular dynamics, is driven by interests of the rapidly growing nanotechnology industry. This Special Issue should bridge, at least in part, this gap between real-life behaviour and mechanical models of nanoscopic structures.

Contributions are invited from the broad field of nanomechanics, including but not limited to the following:

  • Static and dynamic models describing the mechanical behaviour of one- and two-dimensional nanostructures;
  • Characterisation of the mechanical behaviour of nanoscale materials, either through experimental techniques or molecular dynamics;
  • Mechanics involved in the description of nanocomposite materials;
  • Mechanical behaviour of nanostructures under the influence of coupling phenomena such as thermomechanics, nanofluids, piezoelectricity, chemical effects, etc.;
  • Computational methods used in the modelling of nanostructures;
  • Applications of theoretical models as well as experiments of sensors operating at the nanoscale.

Prof. Dr. Marko Čanađija
Prof. Dr. Raffaele Barretta
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

  • nanomechanics
  • nanostructures
  • nanocomposites
  • characterisation
  • nanomaterials
  • MEMS/NEMS

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

13 pages, 1794 KiB  
Article
Free Vibrations of Bernoulli-Euler Nanobeams with Point Mass Interacting with Heavy Fluid Using Nonlocal Elasticity
by Raffaele Barretta, Marko Čanađija, Francesco Marotti de Sciarra and Ante Skoblar
Nanomaterials 2022, 12(15), 2676; https://doi.org/10.3390/nano12152676 - 4 Aug 2022
Cited by 4 | Viewed by 1501
Abstract
Eigenfrequencies of a nanobeam with a point mass interacting with a heavy fluid are calculated using Bernoulli-Euler kinematics and consistent nonlocal elasticity model. The proposed approach is applicable to a variety of nanotechnology materials and structures, especially mass nanosensors. Eigenfrequencies are compared with [...] Read more.
Eigenfrequencies of a nanobeam with a point mass interacting with a heavy fluid are calculated using Bernoulli-Euler kinematics and consistent nonlocal elasticity model. The proposed approach is applicable to a variety of nanotechnology materials and structures, especially mass nanosensors. Eigenfrequencies are compared with those of local theory and conclusions are drawn. Influence of nonlocal effects, heavy fluid interaction and added point mass on dynamic responses is analyzed and the results are documented. Size phenomena are noted and discussed. Full article
(This article belongs to the Special Issue Recent Advances and Applications in Nanomechanics)
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15 pages, 11586 KiB  
Article
Influence of Exposure Period and Angle Alteration on the Flexural Resilience and Mechanical Attributes of Photosensitive Resin
by Sadaf Bashir Khan, Nan Li, Jiahua Liang, Chuang Xiao, Xiaohong Sun and Shenggui Chen
Nanomaterials 2022, 12(15), 2566; https://doi.org/10.3390/nano12152566 - 26 Jul 2022
Cited by 3 | Viewed by 1613
Abstract
Despite the large number of studies addressing the effect of acrylic resin polymerization concerning flexural properties, limited research has been conducted on the manufacturing impact on a polymer’s mechanical properties. Photosensitive resinous materials are used in various engineering applications where they may be [...] Read more.
Despite the large number of studies addressing the effect of acrylic resin polymerization concerning flexural properties, limited research has been conducted on the manufacturing impact on a polymer’s mechanical properties. Photosensitive resinous materials are used in various engineering applications where they may be exposed to multiple detrimental environments during their lifetime. Therefore, there is a need to understand the impact of an environment on the service life of resins. Thus, flexural tests were conducted to study the effects of exposure time and angle on the flexural strength of resins. Herein, the main objective was to explore the strength, stability, and flexural durability of photosensitive resin (EPIC-2000ST) fabricated at different exposure times (E) and angle deviation varying from 0° to 85° with a 5° increment. The samples in circular rings were manufactured and divided into five groups according to their exposure time (E): 10 s, 20 s, 30 s, 40 s, and 50 s. In each exposure time, we designed rings via SolidWorks software and experimentally fabricated at different oblique angles (OA) varying from 0° to 85° with a 5° increment during each fabrication, i.e., OA = 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, and 85°. Flexural strength was evaluated using a three-point bending test. Optical electron microscopy was used to examines the samples’ exterior, interior, and ruptured surfaces. Our experimental analysis shows that flexural strength was significantly enhanced by increasing exposure time and at higher oblique angles. However, at lower angles and less exposure time, mechanical flexural resilience declines. Full article
(This article belongs to the Special Issue Recent Advances and Applications in Nanomechanics)
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16 pages, 3389 KiB  
Article
Phase-Field Modeling of Fused Silica Cone-Crack Vickers Indentation
by Zoran Tomić, Krešimir Jukić, Tomislav Jarak, Tamara Aleksandrov Fabijanić and Zdenko Tonković
Nanomaterials 2022, 12(14), 2356; https://doi.org/10.3390/nano12142356 - 9 Jul 2022
Cited by 2 | Viewed by 1912
Abstract
In this paper, a 3D phase-field model for brittle fracture is applied for analyzing the complex fracture patterns appearing during the Vickers indentation of fused silica. Although recent phase-field models for the fracture caused by the indentation loading have been verified by some [...] Read more.
In this paper, a 3D phase-field model for brittle fracture is applied for analyzing the complex fracture patterns appearing during the Vickers indentation of fused silica. Although recent phase-field models for the fracture caused by the indentation loading have been verified by some simpler academic axis-symmetric examples, a proper validation of such models is still missing. In addition, heavy computational costs, and a complicated compression stress field under the indenter, which demands different energy decompositions, have been identified as the most important impediments for the successful application of the phase-field method for such problems. An adaptive strategy is utilized for reducing the computational costs, and some modifications are introduced, which enable an accurate simulation of the Vickers indentation fracture. Here, the fracture initiation ring outside the contact zone is detected by using different energy decompositions, and the dominant cone-crack formation under the Vickers indenter is observed. Different contact conditions are investigated. The proposed model is validated by experimental measurements, and a quantitative and qualitative comparison between experimental and numerical results is conducted. Full article
(This article belongs to the Special Issue Recent Advances and Applications in Nanomechanics)
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