Scanning tunneling microscopy and spectroscopy of tip-induced direct writing of nanometallization in ultra-high vacuum

This thesis discusses scanning tunneling microscopy (STM) nanometallization on Si(100):H of HfB2 and MgB2. We first give an introduction to graphene nanoribbons (GNRs) along with STM and the techniques therein. We found that with STM, self-standing nanoscale features including dots, wires, and 3D structures can be made. The steps required in STM nanometallization are reduced compared with traditional lithographic techniques that involve photoresist, etching, and metal deposition. STM nanometallization affords simple, clean, and fast metal deposition. Ti evaporation is also discussed to prevent physisorption of precursor molecules that promote unwanted and unintended effects. In addition, nanocontacts between a carbon nanotube and HfB2 and MgB2 are presented. STS results confirm that the bandgap energy of the carbon nanotube is unperturbed by nanomanipulation and nanocontacts with metallic HfB2. Finally, ongoing work is discussed and future work is proposed in the last part of this thesis.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2020

Author dc:creator

• Huang, Pin-Chiao

Contributors dc:contributor

• Lyding, Joseph W.

• STM
• Nanometallization
• STS

Statement dc:rights

• Copyright 2020 Pin-Chiao Huang

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/108190

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/108190