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The Impact of Hydrogen on Mechanical Properties; A New In Situ Nanoindentation Testing Method
Open AccessEditorial

Editorial for the Special Issue on Small-Scale Deformation using Advanced Nanoindentation Techniques

by Ting Tsui 1,* and Alex A. Volinsky 2,*
Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
Department of Mechanical Engineering, University of South Florida, 4202 E Fowler Ave. ENB 118 Tampa, FL 33620, USA
Authors to whom correspondence should be addressed.
Micromachines 2019, 10(4), 269;
Received: 14 April 2019 / Accepted: 16 April 2019 / Published: 22 April 2019
(This article belongs to the Special Issue Small Scale Deformation using Advanced Nanoindentation Techniques)
Nanoindentation techniques have been used to reliably characterize mechanical properties at small scales for the past 30 years. Recent developments of these depth-sensing instruments have led to breakthroughs in fracture mechanics, time-dependent deformations, size-dependent plasticity, and viscoelastic behavior of biological materials. This special issue contains 11 papers covering a diverse field of materials deformation behavior. Müller et al. [1] developed a new nanoindentation method to evaluate the influence of hydrogen on the plastic deformation of nickel. Effects of radiation on ferritic-martensitic steels were studied by Roldán et al. [2]. The applications of the depth-sensing indentation method in the mechanical reliability of microelectronic packaging products, such as through-silicon via (TSV) structures and lead-free solder, were performed by Wu et al. [3] and Long et al. [4], respectively. Gan et al. [5] and Chiu et al. [6] investigated the fracture behavior of cementitious cantilever beam and InP single crystals. Studies of nanometer scale deformation of metallic glass materials (Zr-Cu-Ni-Al and La-Co-Al alloys) [7] and Bi2Se3 thin films [8] were also part of the collected manuscripts. The mechanical deformation of mammalian cells and other biological materials [9,10] were also discussed in this focus issue. Influence of surface pit on the nanoindentation was studied by Zhang et al. [11]. The editors would like to thank these authors for their contributions to this focus issue.


  1. Müller, C.; Zamanzade, M. The Impact of Hydrogen on Mechanical Properties; A New In Situ Nanoindentation Testing Method. Micromachines 2019, 10, 114. [Google Scholar] [CrossRef] [PubMed]
  2. Roldán, M.; Fernández, P.; Rams, J.; Sánchez, F.J.; Adrián, G.-H. Nanoindentation and TEM to Study the Cavity Fate after Post-Irradiation Annealing of He Implanted. Micromachines 2018, 9, 633. [Google Scholar] [CrossRef] [PubMed]
  3. Wu, C.; Wei, C.; Li, Y. In Situ Mechanical Characterization of the Mixed-Mode Fracture Strength of the Cu/Si Interface for TSV Structures. Micromachines 2019, 10, 86. [Google Scholar] [CrossRef] [PubMed]
  4. Long, X.; Zhang, X.; Tang, W.; Wang, S.; Feng, Y.; Chang, C. Calibration of a Constitutive Model from Tension and Nanoindentation for Lead-Free Solder. Micromachines 2018, 9, 608. [Google Scholar] [CrossRef] [PubMed]
  5. Gan, Y.; Zhang, H.; Šavija, B.; Schlangen, E. Static and Fatigue Tests on Cementitious Cantilever Beams Using Nanoindenter. Micromachines 2018, 9, 630. [Google Scholar] [CrossRef] [PubMed]
  6. Chiu, Y.; Jian, S.; Liu, T.; Le, P.H.; Juang, J. Localized Deformation and Fracture Behaviors in InP Single Crystals by Indentation. Micromachines 2018, 9, 611. [Google Scholar] [CrossRef] [PubMed]
  7. Ma, Y.; Song, Y.; Huang, X.; Chen, Z.; Zhang, T. Testing Effects on Shear Transformation Zone Size of Metallic Glassy Films Under Nanoindentation. Micromachines 2018, 9, 636. [Google Scholar] [CrossRef] [PubMed]
  8. Lai, H.; Jian, S.; Thi, L.; Tuyen, C.; Le, P.H.; Luo, C. Nanoindentation of Bi2Se3 Thin Films. Micromachines 2018, 9, 518. [Google Scholar] [CrossRef] [PubMed]
  9. Qian, L.; Zhao, H. Nanoindentation of Soft Biological Materials. Micromachines 2018, 9, 654. [Google Scholar] [CrossRef] [PubMed]
  10. Moussa, H.; Logan, M.; Wong, K.; Rao, Z.; Aucoin, M.; Tsui, T. Nanoscale-Textured Tantalum Surfaces for Mammalian Cell Alignment. Micromachines 2018, 9, 464. [Google Scholar] [CrossRef] [PubMed]
  11. Zhang, Z.; Ni, Y.; Zhang, J.; Wang, C.; Ren, X. Multiscale analysis of size effect of surface pit defect in nanoindentation. Micromachines 2018, 9, 298. [Google Scholar] [CrossRef] [PubMed]
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