Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


ohiou1282363151.pdf (7.18 MB)

ETD Abstract Container

Abstract Header

STM Study of Molecular and Biomolecular Electronic Systems

Clark, Kendal W.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282363151

Abstract Details

2010, Doctor of Philosophy (PhD), Ohio University, Electrical Engineering (Engineering and Technology).
This dissertation work is focused on the study of two molecular electronic systems: (BETS)2GaCl4 and a Nanoscale Protein Molecular Wire. The detailed structural and electronic study of these systems was carried out using a custom built Ultra-High Vacuum Low Temperature Scanning Tunneling Microscope (UHV-LT-STM). The STM is capable of studying these systems with a spatial and energy resolution that has never been achieved before. λ-(BETS)2GaCl4 is a charge transfer superconductor in bulk crystals. Using a unique deposition procedure, a single sheet of the superconductor was formed on a Ag(111) metal surface. Molecular resolution imaging of the well ordered molecular layer revealed the exact arrangement of the molecules on the surface. The superconductivity of the layer was confirmed by scanning tunneling spectroscopy and spectroscopic mapping. The superconducting signal remained down to a chain of only four molecular pairs, which was only 3.5 nm long. The structure of the nanoscale protein molecular wire is revealed by high resolution STM imaging. Single proteins are imaged and individual amino acid side chains are resolved. Electronic and vibrational properties are explored using the spectroscopic capability of the STM. The STM images, in combination with high resolution vibrational spectroscopy, allow for the first direct sequencing of individual proteins. These two systems have unique properties that could be used as key components in the new class of Nano/Bio electronics. By developing a better understanding of the properties of these systems at the nanoscale, this PhD study answers questions about the electronic and structural properties of these systems and points towards their future electronic and bio-medical applications.
Savas Kaya, PhD (Advisor)
Saw-Wai Hla, PhD (Advisor)
Wojciech Jadwisienczak, PhD (Committee Member)
Ralph Whaley, PhD (Committee Member)
Avinash Kodi, PhD (Committee Member)
Ido Braslavsky, PhD (Committee Member)
146 p.
Electrical Engineering; Physics
Scanning Tunneling Microscope; STM; Nanotechnology; Molecular Superconductor; Protein; Scanning Tunneling Spectroscopy; Molecular Electronics

Recommended Citations

Citations

  • Clark, K. W. (2010). STM Study of Molecular and Biomolecular Electronic Systems [Doctoral dissertation, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282363151

    APA Style (7th edition)

  • Clark, Kendal. STM Study of Molecular and Biomolecular Electronic Systems. 2010. Ohio University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282363151.

    MLA Style (8th edition)

  • Clark, Kendal. "STM Study of Molecular and Biomolecular Electronic Systems." Doctoral dissertation, Ohio University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282363151

    Chicago Manual of Style (17th edition)

ohiou1282363151
673
© 2010, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.