Symmetry/Asymmetry and Novel Nanomaterials: Preparation, Characterizations, and Applications

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 3293

Special Issue Editor


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Guest Editor
1. Mechanical Engineering Program, Pennsylvania State University, Harrisburg, Middletown, PA 17057, USA
2. Department of Biomedical Engineering, Pennsylvania State University, University Park, State College, PA 16802, USA
Interests: bioinspired materials and structures; bimaterials; nanomaterials; self healing materials; composites; additive manufacturing
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Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue on “Symmetry/Asymmetry and Novel Nanomaterials: Preparation, Characterizations, and Applications". Nanostructures and nanomaterials have received great attention in the fuel cell, aerospace, automotive, medical, and military industries due to their unique mechanical and physical properties. The physical properties (symmetry/asymmetry) of nanomaterials play an important role in influencing their mechanical, electrical, and chemical properties. Nanomaterials exhibit increased strength/hardness, enhanced diffusivity, improved ductility/toughness, reduced density, reduced elastic modulus, increased specific heat and surface, etc. The focus of this Special Issue is on the fabrication and characterization of nanomaterials and nanocomposites for different applications, such as automotive, paint, solar cell, and biomedical applications.

In particular, the topics of interest include, but are not limited to:

  • Bioinspired nanomaterials and nanocomposites;
  • Self-healing nanomaterials and nanocomposites;
  • Smart structures with shape memory capabilities;
  • Advanced nanostructures with excellent mechanical properties;
  • Additive manufacturing of nanomaterials and nanocomposites;
  • In vitro evaluation of modified nanoceramics and polymers;
  • Fundamental and novel concepts to synthesis nanomaterials;
  • Carbon nanostructures with biomedical applications;
  • Fabrication and optimization of thin films;
  • Nanostructures in drug delivery systems;
  • Nanobots in biomedical applications.

Dr. Fariborz Tavangarian
Guest Editor

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Published Papers (2 papers)

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Research

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16 pages, 5796 KiB  
Article
Microstructural Evolution and Mechanical Properties of an Additively Manufactured AlSi10Mg Alloy Post-Processed by Twist Equal Channel Angular Pressing
by Przemysław Snopiński, Augustine Appiah, Ondřej Hilšer and Jiři Hajnyš
Symmetry 2025, 17(8), 1289; https://doi.org/10.3390/sym17081289 - 11 Aug 2025
Viewed by 200
Abstract
This study investigates the microstructural evolution and mechanical response of an additively manufactured (PBF-LB/M) AlSi10Mg alloy subjected to severe plastic deformation via two passes of twist channel angular pressing (TCAP). Processing was conducted using Route Bc, with the first pass at 150 °C [...] Read more.
This study investigates the microstructural evolution and mechanical response of an additively manufactured (PBF-LB/M) AlSi10Mg alloy subjected to severe plastic deformation via two passes of twist channel angular pressing (TCAP). Processing was conducted using Route Bc, with the first pass at 150 °C and the second at 250 °C. For the first time, the evolution from the initial hierarchical AM structure to a refined state was characterized in high-fidelity detail using a novel EBSD detector. The two-pass process transformed the initial structure into a heterogeneous, bimodal microstructure existing in a non-equilibrium state, characterized by a high fraction of low-angle grain boundaries (63%) and significant internal lattice distortion. The mechanical properties were dictated by the processing temperature: a single pass at 150 °C induced work hardening, increasing the yield strength from 450 MPa to 482 MPa. Conversely, the second pass at an elevated temperature of 250 °C promoted significant dynamic recovery. This led to a decrease in yield strength to 422 MPa but concurrently resulted in a substantial increase in ultimate compressive strength to 731 MPa. Full article
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Review

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46 pages, 23652 KiB  
Review
Nanoframes as a Resilient Candidate for a Broader Spectra of Catalysis Challenges
by Fawad Ahmad, Qurat ul Ain, Shafaq Zahid and Takashiro Akitsu
Symmetry 2024, 16(4), 452; https://doi.org/10.3390/sym16040452 - 8 Apr 2024
Cited by 1 | Viewed by 2354
Abstract
Metal nanoframes have gained tremendous attention in the domain of modern research and development due to their distinctive 3D spatial structure, efficient physiochemical properties, and comparatively good activity. Different strategies have been implicated by the researchers to design nanoframes of varying chemical natures [...] Read more.
Metal nanoframes have gained tremendous attention in the domain of modern research and development due to their distinctive 3D spatial structure, efficient physiochemical properties, and comparatively good activity. Different strategies have been implicated by the researchers to design nanoframes of varying chemical natures and shapes. Most of the synthetic protocols being adopted to design nanoframes consist of two main steps: nucleation and the growth of solid particles and, secondly, excavation of the interiors. In this context, many synthetic methods are overviewed. To show their unprecedented performance or activity, a few applications in catalysis, biomedicine, theranostics, SERS, the sensing of different materials, the reduction of CO2, etc., are also discussed. Full article
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