Title Information
Title
Physical characterization and conductivity of silver-intercalated DNA
Abstract
The intercalation of silver ions into DNA occurs via non-canonical base pairing with cytosine-cytosine mismatches. We present a characterization of these duplexes through the following methods: Immobilization onto HOPG for SEM imaging in preparation for further analysis with an ultra high vacuum scanning probe microscope; DC thin film conductivity tests under varying humidity conditions; STM break-junction measurements. Through the thin film measurements, it was possible to conclude that humidity proved to greatly affect DC thin film conductivity readings for both the control and the sample of interest. In low humidity conditions, the intercalated sample was roughly two orders of magnitude more conductive than the control. Additionally, early tests of tip-substrate conductance using the STM break-junction method confirmed conductivity of gold atom chains near multiples of the quantum conductance.
Name: Personal
Name Part
Toomey, Emily
Role
Role Term
creator
Name: Corporate
Name Part
Brown University. Undergraduate Teaching and Research Awards
Role
Role Term
research program
Name: Personal
Name Part
Xu, Jimmy
Role
Role Term
advisor
affiliation
Brown University. School of Engineering
Origin Information
Publisher
Brown University
Date Created (encoding="w3cdtf")
2014-08-07
Place
Place Term: Text
Providence
Genre (aat)
posters
Subject (Local)
Topic
DNA
Subject (Local)
Topic
STM break-junctions
Subject (Local)
Topic
Conductivity
Identifier: DOI
10.26300/derf-sj22
Type of Resource
text