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Title:Scanning tunneling microscopy and spectroscopy of tip-induced direct writing of nanometallization in ultra-high vacuum
Author(s):Huang, Pin-Chiao
Advisor(s):Lyding, Joseph W.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Abstract: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.
Issue Date:2020-05-13
Rights Information:Copyright 2020 Pin-Chiao Huang
Date Available in IDEALS:2020-08-26
Date Deposited:2020-05

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