This research explored the optical
properties of metal nanoparticles using the
discrete dipole approximation (DDA). A
method was developed to define nanoparticle
structures of arbitrary shapes, and this
method was interfaced with the preexisting
DDA code, DDSCAT 6.1. For each structure
and material, the scattering properties and
near electric-field enhancements...
This paper reports the synthesis of an
azide-functionalized deoxynucleoside as a
precursor for azide-terminated oligonucleotides.
Also reported is the synthesis of an
acetylene-terminated precursor, which can
be used to make a diverse array of
silyl-protected acetylene-terminated small
molecule cores. Both of these precursors
serve as basic building blocks en route...
The need for high-performance, solid-state
H2 gas sensors is one research effort aimed
at enabling the future hydrogen economy.
Improving the gas-sensing properties of
semiconducting oxide materials such as tin
oxide, zinc oxide, etc., necessitates the
control microstructure and composition.
This study compares the effect of
dimensionality with the effect...
Magnetic resonance imaging (MRI) is a
powerful technique used in clinical
medicine and biomedical research to
conduct noninvasive imaging of tissues and
organisms. Chelated gadolinium is often
used as an MRI contrast agent to improve
the spatial resolution of these images.
Recently developed “smart” MRI contrast
agents respond to specific...
This research illustrates the modification of
an iodostyrene layer on a Si(111) surface
using a Sonogashira reaction. This was
accomplished by applying UV irradiation
(254 nm) to a hydrogen-passivated silicon
surface in a solution of iodostyrene in
benzene, followed by a Sonogashira
coupling between the iodine group from
iodostyrene and...
This research investigated the feasibility of
patterning with sol-gels using a nanofountain
probe in an atomic force microscope.
Two oxide sols — barium titanate and
cobalt ferrite — were used as inks in
patterning tests using fountain-pen
nanolithography (FPN). This was shown to
be a suitable method of depositing sol-gels...