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Special Issue "Nanoscale Friction, Adhesion and Wear Characteristics of Surfaces and Interfaces of Micro/Nanostructures"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (1 August 2017)

Special Issue Editor

Guest Editor
Dr. Erjia Liu

School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
Website | E-Mail

Special Issue Information

Dear Colleagues,

Nanotribology, brought about by magnetic recording technology, studies surface and interface properties in micro/nanostructures used in information storage systems, micro-electromechanical systems (MEMS), and nano-electro-mechanical systems (NEMS). Such surface and interface properties are very important in a variety of modern applications, such as chemical sensors, biodetectors, advanced drug delivery systems, information recording devices, molecular sieves, systems on a chip, and nanocomposites reinforced by nanoparticles or carbonaceous nanospecies. A fundamental understanding of nanoscale friction, adhesion and wear characteristics in these applications is critical. Small mass, light load, elastic deformation, intermolecular/interatomic/interionic interactions, and slight wear or absence of wear are typical in nanotribology, which is primarily concerned with the surface and interface properties of micro/nanostructured materials and devices. Experimental study of nanotribology has been made possible by the advent of scanning probe microscopes (SPM), surface force apparatus (SFA), quartz microbalance and related techniques.

This Special Issue is devoted to the fundamental and applied research works on “Nanoscale Friction, Adhesion and Wear Characteristics of Surfaces and Interfaces of Micro/Nanostructures”. Potential topics include, but are not limited to:

  • Fundamental issues in friction, adhesion and wear at the nanoscale and atomic scale
  • Recent development of friction force microscopy, surface force apparatus, quartz microbalance and related techniques in nanotribology
  • Triboluminescence
  • Friction and adhesion properties of surfaces and interfaces based on 2D nanomaterials such as graphene, molybdenum disulfide, hexagonal boron nitride, and zirconium phosphate among others
  • Friction and wear phenomena in liquid environments
  • Capillary condensation
  • Development of new simulation methods for friction, adhesion and wear at the nanoscale and atomic scale
  • Multiscale friction modeling
  • Nanoscale tribocorrosion of surface engineered materials
  • Nanoscale biotribology of synthetic materials and natural tissues
  • Fundamental understanding of nanoscale friction, adhesion and wear properties of surfaces and interfaces in chemical sensors, biodetectors, drug delivery systems, information recording devices, molecular sieves, systems on a chip, nanocomposites, etc.

Dr. Erjia Liu
Guest Editor

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. Materials 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 1500 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

  • Nanoscale
  • Friction
  • Adhesion
  • Wear
  • Micro/Nanostructure
  • Surface
  • Interface
  • Instrumentation

Published Papers (2 papers)

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Research

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Open AccessFeature PaperArticle Graded Microstructure and Mechanical Performance of Ti/N-Implanted M50 Steel with Polyenergy
Materials 2017, 10(10), 1204; doi:10.3390/ma10101204
Received: 27 August 2017 / Revised: 11 October 2017 / Accepted: 12 October 2017 / Published: 19 October 2017
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Abstract
M50 bearing steels were alternately implanted with Ti+ and N+ ions using solid and gas ion sources of implantation system, respectively. N-implantation was carried out at an energy of about 80 keV and a fluence of 2 × 1017 ions/cm
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M50 bearing steels were alternately implanted with Ti+ and N+ ions using solid and gas ion sources of implantation system, respectively. N-implantation was carried out at an energy of about 80 keV and a fluence of 2 × 1017 ions/cm2, and Ti-implantation at an energy of about 40–90 keV and a fluence of 2 × 1017 ions/cm2. The microstructures of modification layers were analyzed by grazing-incidence X-ray diffraction, auger electron spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. The results showed that the gradient structure was formed under the M50 bearing steel subsurface, along the ion implantation influence zone composed of amorphous, nanocrystalline, and gradient-refinement phases. A layer of precipitation compounds like TiN is formed. In addition, nano-indentation hardness and tribological properties of the gradient structure subsurface were examined using a nano-indenter and a friction and wear tester. The nano-indentation hardness of N + Ti-co-implanted sample is above 12 GPa, ~1.3 times than that of pristine samples. The friction coefficient is smaller than 0.2, which is 22.2% of that of pristine samples. The synergism between precipitation-phase strengthening and gradient microstructure is the main mechanism for improving the mechanical properties of M50 materials. Full article
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Review

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Open AccessFeature PaperReview Scaling Effects on Materials Tribology: From Macro to Micro Scale
Materials 2017, 10(5), 550; doi:10.3390/ma10050550
Received: 31 March 2017 / Revised: 25 April 2017 / Accepted: 2 May 2017 / Published: 18 May 2017
Cited by 1 | PDF Full-text (11742 KB) | HTML Full-text | XML Full-text
Abstract
The tribological study of materials inherently involves the interaction of surface asperities at the micro to nanoscopic length scales. This is the case for large scale engineering applications with sliding contacts, where the real area of contact is made up of small contacting
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The tribological study of materials inherently involves the interaction of surface asperities at the micro to nanoscopic length scales. This is the case for large scale engineering applications with sliding contacts, where the real area of contact is made up of small contacting asperities that make up only a fraction of the apparent area of contact. This is why researchers have sought to create idealized experiments of single asperity contacts in the field of nanotribology. At the same time, small scale engineering structures known as micro- and nano-electromechanical systems (MEMS and NEMS) have been developed, where the apparent area of contact approaches the length scale of the asperities, meaning the real area of contact for these devices may be only a few asperities. This is essentially the field of microtribology, where the contact size and/or forces involved have pushed the nature of the interaction between two surfaces towards the regime where the scale of the interaction approaches that of the natural length scale of the features on the surface. This paper provides a review of microtribology with the purpose to understand how tribological processes are different at the smaller length scales compared to macrotribology. Studies of the interfacial phenomena at the macroscopic length scales (e.g., using in situ tribometry) will be discussed and correlated with new findings and methodologies at the micro-length scale. Full article
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