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CreatorTitleDescriptionSubjectDate
1 Vardeny, Zeev Valentine; Ehrenfreund, Eitan A.Apparent phonon side-band modes in π-conjugated systems: polymers, oligomers and crystalsThe emission spectra of many π-conjugated polymers and oligomers contain side-band replicas with apparent frequencies that do not match the Raman active mode frequencies. Using a time dependent model we show that in such many mode systems, the increased damping of the time dependent transition dipo...2005-11
2 Harrison, Reid R.Biologically inspired analog IC for visual collision detectionWe have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expanding optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. We evaluated a detailed version of thi...Visual collision detection; VLSI2005-11
3 Lombardo, Nancy T.; Cowan, DerekDigital video: broadcasting and on-demand play backA LIFT Forum presentation. The purpose of the Library and Information Technology Forum is to inform the University of Utah community about electronic information resources, and current trends in the use of computers and online technologies for accessing these resources.Digital Video Broadcasting; LIFT; Library and Information Technology Forum; Spencer S. Eccles Health Sciences Library2005-11
4 Scarpulla, MichaelFerromagnetism in Ga1-xMnxP: evidence for inter-Mn exchange mediated by localized holes within a detached impurity bandWe report an energy gap for hole photoexcitation in ferromagnetic Ga1-xMnxP that is tunable by Mn concentration (x ≤ 0:06) and by compensation with Te donors. For x ~ 0:06, electrical transport is dominated by excitation across this gap above the Curie temperature (TC) of 60 K and by thermally a...Gallium Phosphide; Ferromagnetism; Mn impurity band2005-11
5 Lupton, John MarkMonitoring surface charge migration in the spectral dynamics of single CdSe∕CdS nanodot/nanorod heterostructuresSpherical CdSe nanocrystals capped by a CdS rod-like shell exhibit interesting spectral dynamics on the single particle level. Spectral boxcar averaging reveals a high degree of correlation between the emission energy, spectral linewidth, phonon coupling strength, and emission intensity of the singl...Surface charge migration; Spectral dynamics; CdSe; CdS; Nanodot; Nanorod2005-11
6 Lupton, John MarkUltrafast dynamics of charge carrier photogeneration and geminate recombination in conjugated polymer: fullerene solar cellsWe investigate the nature of ultrafast exciton dissociation and carrier generation in acceptor-doped conjugated polymers. Using a combination of two-pulse femtosecond spectroscopy with photocurrent detection, we compare the exciton dissociation and geminate charge recombination dynamics in blends ...Ultrafast dynamics; Charge carrier photogeneration; Geminate recombination; Exciton dissociation; Acceptor-doped; MeLPPP; MDMO-PPV2005-11
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