We present a micropatterning method for the automatic transfer and arbitrary positioning of computer-generated three-dimensional structures within a substrate. The Gerchberg-Saxton algorithm and an electrically addressed spatial light modulator (SLM) are used to create and display phase holograms, respectively. A holographic approach to light manipulation… (More)
We present a quantitative phase microscopy method that uses a Bayer mosaic color camera to simultaneously acquire off-axis interferograms in transmission mode at two distinct wavelengths. Wrapped phase information is processed using a two-wavelength algorithm to extend the range of the optical path delay measurements that can be detected using a single… (More)
We demonstrate a diffractive maskless lithographic system that is capable of rapidly performing both serial and single-shot micropatterning. Utilizing the diffractive properties of phase holograms displayed on a spatial light modulator, arbitrary intensity distributions were produced to form two and three dimensional micropatterns/structures in a variety of… (More)
Janus particles generally refer to a class of colloids with two dissimilar faces having unique material properties.  The spherical asymmetry associated with Janus particles is the key to realizing many commercial applications, including electro-phoretic displays, [2,3] nanosviscometers,  and self-propelling micromachines.  These diverse… (More)
i Spreader fan distributing a mixture of biosolids and fly ash on the Palmerton, PA Site NOTICE This document was prepared by a University of Arizona undergraduate student under an internship with United States Environmental Protection Agency. This report was not subject to EPA peer review or technical review. The U.S.
a r t i c l e i n f o The in-situ synthesis of Cu/ZnO crystalline nanofibers is presented. The composite nanofibers are formed through the calcination and reduction of as-electrospun fibers consisting of poly(vinyl pyrrolidone) as well as Cu and ZnO precursors. The crystal structure and morphology of the synthesized fibers were characterized using X-ray… (More)