Journal of Nanomedicine & Nanotechnology

Nanoindentation, modification and local energy characteristics of the thin surface layers

7^th World Nano Conference

June 20-21, 2016 Cape Town, South Africa

Zhuk Ya O, Andruschenko V A and Melnichenko M M

National University of Kyiv, Ukraine

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

The miniaturization of the functional elements dimensions and nanostructuring of materials require solving the goals their preparation and control of physical and chemical properties on the micro- and nanolevels in static and dynamic modes. Nanoindentation as a set of approaches, methods and specific hardware is practically the only universal tool for finding out the laws of mechanical behavior of materials in submicron and nanovolumes, thin surface layers and films.The practical use of a scanning tunneling microscope (Home Worker) for the purposes indentation in continuous micro-nano range was demonstration in the paper. Demonstrated a principal possibility of modifying the sample surface by tunnel current. Presented the two-pass method of creation of nano-object on the sample surface. For the practical usage of nanostructured layers in microelectronics it is very important to study the spatial dependence of electron energy spectrum. Information about the spatial distribution of the states density near the Fermi level can be experimentally measured with scanning tunneling spectroscopy (STS). Using scanning tunneling spectroscopy (STS) allows you to restore the electronic structure of the surface with atomic spatial resolution. In general, the spectroscopic information is used when considering issues such as the bandgap, band bending at the surface, the nature of chemical bonds. Local energy characteristics of nanostructured silicon surface were studied by the tunneling spectroscopy method. Obtained current-voltage characteristics of nanostructured silicon layers without and under the illumination by ultraviolet radiation on air and in gas environment. The results indicate that the method of scanning tunneling spectroscopy can be used in the field of surface chemistry, nanoelectronics and sensors.

Biography :

Email: y.zhuk@i.ua