Development of a novel nanoindentation technique by utilizing a dual-probe AFM system

ÇİNAR E., Sahin F., Yablon D.

BEILSTEIN JOURNAL OF NANOTECHNOLOGY, vol.6, pp.2015-2027, 2015 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 6
  • Publication Date: 2015
  • Doi Number: 10.3762/bjnano.6.205
  • Journal Name: BEILSTEIN JOURNAL OF NANOTECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2015-2027
  • Keywords: atomic force microscopy (AFM), mechanical characterization, nanoindentation, ATOMIC-FORCE MICROSCOPY, ELASTIC-MODULUS, SOFT MATERIALS, INDENTATION, HARDNESS, CELLS
  • Eskisehir Osmangazi University Affiliated: No

Abstract

A novel instrumentation approach to nanoindentation is described that exhibits improved resolution and depth sensing. The approach is based on a multi-probe scanning probe microscopy (SPM) tool that utilizes tuning-fork based probes for both indentation and depth sensing. Unlike nanoindentation experiments performed with conventional AFM systems using beam-bounce technology, this technique incorporates a second probe system with an ultra-high resolution for depth sensing. The additional second probe measures only the vertical movement of the straight indenter attached to a tuning-fork probe with a high spring constant and it can also be used for AFM scanning to obtain an accurate profiling. Nanoindentation results are demonstrated on silicon, fused silica, and Corning Eagle Glass. The results show that this new approach is viable in terms of accurately characterizing mechanical properties of materials through nanoindentation with high accuracy, and it opens doors to many other exciting applications in the field of nanomechanical characterization.