Ben Taber Awarded UO Dissertation Research Fellowship for 2017-18

Ben Taber was awarded the prestigious UO Dissertation Research Fellowship for the 2017-18 academic year. This fellowship is designed to support outstanding doctoral students and promote excellence in research at the University of Oregon by providing financial support for exceptional doctoral candidates to complete their dissertations.

For a list of this year’s graduate school award recipients, click here.

William Crowley Successfully Defends Honors College Thesis, Earns Distinction

Nazin Lab undergraduate researcher William Crowley successfully defended his Honors College Thesis earlier today. His thesis, “Fabrication of Silver Scanning Tunneling Microscope Tips with Acetic Acid,” earned Distinction, an honor awarded to the top ten percent of graduates of University of Oregon’s Robert D. Clark Honors College.

Bravo, William!

Ben Taber and Christian Gervasi Headed to ACS

Ben Taber and Christian Gervasi will be attending the upcoming ACS National Meeting in San Francisco. Ben will be giving an oral presentation, “Scanning tunneling microscopy of alkyl-substituted oligothiophenes on Au(111): Real-space visualization of molecular electronic structure,” from 8:10-8:50 am on Sunday, April 2, in the Sutro room of Parc 55. Christian Gervasi will be presenting a poster, “Impact of surface reconstruction on the electronic structure of PbS QD nanocrystals: Experiment and theory,” during the Inorganic Division poster session from 5:30-7:30 PM on Tuesday, April 4 in Hall D of the Moscone Center.

Check out them and their work!

Congratulations to Dr. Dmitry Kislitsyn!

Yesterday, Dmitry Kislitsyn successfully defended his dissertation, “Spectroscopic Studies of Nanomaterials with a Liquid-Helium-Free High-Stability Cryogenic Scanning Tunneling Microscope.” Dr. Kislitsyn has been instrumental in building and developing the Nazin Lab, and he will most certainly be missed. We wish him the best of luck as he goes to New York to begin his new position at Global Foundries!

Molecular Nanohoop Quantum Corrals: A Novel Approach to Modifying Surface Electronic Structure

Table of Contents Figure 8CPP_v13-01Quantum confinement of two-dimensional surface electronic states is a possible avenue for the controllable modification of metal surface electronic structure. The Nazin Lab used scanning tunneling microscopy and spectroscopy (STM/STS) to study the electron confinement within individual ring-shaped cycloparaphenylene (CPP) molecules, prepared by Evan Darzi and Ramesh Jasti, that formed self-assembled films on Ag(111) and Au(111) surfaces. STM imaging and STS mapping revealed the presence of electronic states localized in the interiors of CPP rings, inconsistent with the expected localization of molecular electronic orbitals. Electronic energies of these states showed considerable variations correlated with the molecular shape. These observations are explained by the presence of localized states formed due to confinement of surface electrons by the CPP skeletal framework, which thus acts as a molecular electronic “corral”. These experiments suggest an approach to robust, large-area modification of the surface electronic structure via quantum confinement within molecules forming self-assembled layers.

Benjamen N. Taber, Christian F. Gervasi, Jon M. Mills, Dmitry A. Kislitsyn, Evan R. Darzi, William G. Crowley, Ramesh Jasti, and George V. Nazin published their results, “Quantum Confinement of Surface Electrons by Molecular Nanohoop Corrals”,  in the Journal of Physical Chemistry Letters. The letter was published online on July 26, 2016, and is available at: http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6b01279.