Functional Micro Structures and Textures: Manufacturing and Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1410

Special Issue Editor


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Guest Editor
1. Department of Mechanical and Materials Engineering, Western University, London, ON N6A 6B9, Canada
2. Automotive and Surface Transportation, National Research Council of Canada, London, ON N6G 4X8, Canada
Interests: materials and processing: materials based micro/nano structures, devices, system, and its applications, bio-inspired surfaces; micro/nano fabrication and manufacturing: patterning, surface micromachining, bulk micromachining, laser fabrication, advanced manufacturing engineering
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Special Issue Information

Dear Colleagues,

Advanced micro/nano-, cutting/laser-based micromachining technologies, such as micromachining of complex parts and geometric structures and features, structuring and texturing of functional, optical, and tooling surfaces, are the key technologies for adding new and/or enhancing existing values of the functional parts and products. These surface engineering technologies exhibit significant advantages over conventional processes in terms of process reconfigurability, accuracy, precision, surface quality, versatility, processing time and cost, and minimal environmental impact. In addition, micro/nano-micromachining technologies can be seamlessly integrated with novel material additive processes and systems for surface formation  and topography enhancement and functionalization.

The aim of this Special Issue is to cover advanced developments, functionalities, and applications in functional micro structures and textures produced using micro/nano-, cutting/laser-based micromachining technologies. It also seeks to highlight research on system and part design, process and performance modelling, microfabrication, and performance evaluation of the micromachining process and/or functional surfaces and their precision, accuracy, quality, and efficiency improvement for a wide range of applications related (but not limited) to the control of wettability, friction, optical appearance, light guiding, corrosion, hydro- and aero-dynamics, and biofouling resistance.

We invite leading experts and researchers in this field to submit original research papers, comprehensive reviews as well as communications addressing any of the topics mentioned below:

  • Functional surfaces and micro-/nanostructures for enhanced wettability, friction, hydro-/aerodynamics, light guiding, optical holography, self-cleaning, drag, biofouling resistance, solar light trapping, boiling, water condensation, adhesion, alumophobicity, etc.;
  • Functional surfaces and micro-optics for advanced optical performance (e.g., illumination, retroreflection, holography, light guiding, diffraction, sensing, etc.) and controlled visual appearance (e.g., brand recognition, artistic effects, etc.)
  • Cutting-based micro/nanomachining including single-point cutting, milling, vibration-assisted cutting, fast/slow tool servo and other advanced technologies for microfabrication, structuring, texturing, polishing, etc.;
  • Laser-based micro/nanomachining including ablation, remelting, microcladding, and other advanced technologies for structuring, texturing, polishing, remelting, alloying, etc.

You may choose our Joint Special Issue in Micro.

Dr. Evgueni Bordatchev
Guest Editor

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Keywords

  • functional surfaces
  • functional structures
  • functional components
  • modelling
  • numerical simulation
  • verification micro/nano-machining
  • cutting
  • milling
  • turning
  • single point cutting
  • laser ablation
  • 3D laser additive
  • laser remelting
  • process optimization
  • CAD/CAM design

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Published Papers (1 paper)

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Research

18 pages, 15257 KiB  
Article
SPH–FEM Analysis of Effect of Flow Impingement of Ultrasonic Honing Cavitation Microjet on Titanium–Tantalum Alloy Surface
by Jinwei Zhang, Xijing Zhu and Jing Li
Micromachines 2024, 15(1), 38; https://doi.org/10.3390/mi15010038 - 23 Dec 2023
Cited by 1 | Viewed by 1123
Abstract
To investigate the machining effect of ultrasonic honing microjets on a titanium–tantalum alloy surface, a cavitation microjet flow impingement model was established using the smoothed particle hydrodynamics–finite element method (SPH–FEM) coupling method including the effects of wall elastic–plastic deformation, the ultrasonic field and [...] Read more.
To investigate the machining effect of ultrasonic honing microjets on a titanium–tantalum alloy surface, a cavitation microjet flow impingement model was established using the smoothed particle hydrodynamics–finite element method (SPH–FEM) coupling method including the effects of wall elastic–plastic deformation, the ultrasonic field and the honing pressure field. Simulation analysis was conducted on a single impact with different initial speeds and a continuous impact at a constant initial speed. The results showed that the initial speed of the microjet needed to reach at least 580 to 610 m/s in order to obtain an obvious effect of the single impact. The single impact had almost no effect at low speeds. However, when the microjet continuously impacted the same position, obvious pits were produced via a cumulative effect. These pits were similar to that obtained by the single impact, and they had the maximum depth at the edge rather than the center. With the increase in the microjet’s initial speed, the total number of shocks required to reach the same depth gradually decreases. When the number of impacts is large, with the increase in the number of impacts, the growth rate of the maximum pit depth gradually slows down, and even shows no growth or negative growth at some times. Using the continuous impacts of the microjet by prolonging the processing time can enhance titanium–tantalum alloy machining with ultrasonic honing for material removal. Full article
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