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Investigating the interfacial dynami...

Rosenbaum, Aaron W.

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Investigating the interfacial dynamics of thin films.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Investigating the interfacial dynamics of thin films./
Author:	Rosenbaum, Aaron W.
Description:	171 p.
Notes:	Adviser: Steven J. Sibener.
Contained By:	Dissertation Abstracts International66-07B.
Subject:	Chemistry, Physical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3181406
ISBN:	9780542214813

Investigating the interfacial dynamics of thin films.
Rosenbaum, Aaron W.

Investigating the interfacial dynamics of thin films. - 171 p.

Adviser: Steven J. Sibener.

Thesis (Ph.D.)--The University of Chicago, 2005.

This thesis probes the interfacial dynamics and associated phenomena of thin films. Surface specific tools were used to study the self-assembly of alkanethiols, the mono- and bilayer dynamics of SF6, and the surface motion of poly(methyl methacrylate). Non-pertubative helium atom scattering was the principal technique used to investigate these systems. A variety of other complementary tools, including scanning tunneling microscopy, electron diffraction, Auger spectroscopy, atomic force microscopy, and ellipsometry were used in tandem with the neutral atom scattering studies.

ISBN: 9780542214813Subjects--Topical Terms:

560527
Chemistry, Physical.

Investigating the interfacial dynamics of thin films.
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020 $a 9780542214813
035 $a (UMI)AAI3181406
035 $a AAI3181406
040 $a UMI $c UMI
100 1 $a Rosenbaum, Aaron W. $3 1270275
245 1 0 $a Investigating the interfacial dynamics of thin films.
300 $a 171 p.
500 $a Adviser: Steven J. Sibener.
500 $a Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3731.
502 $a Thesis (Ph.D.)--The University of Chicago, 2005.
520 $a This thesis probes the interfacial dynamics and associated phenomena of thin films. Surface specific tools were used to study the self-assembly of alkanethiols, the mono- and bilayer dynamics of SF6, and the surface motion of poly(methyl methacrylate). Non-pertubative helium atom scattering was the principal technique used to investigate these systems. A variety of other complementary tools, including scanning tunneling microscopy, electron diffraction, Auger spectroscopy, atomic force microscopy, and ellipsometry were used in tandem with the neutral atom scattering studies.
520 $a Controlling the spontaneous assembly of alkanethiols on Au(111) requires a better fundamental understanding of the adsorbate-adsorbate and substrate-adsorbate interactions. Our characterization focused on two key components, the surface structure and adsorbate vibrations. The study indicates that the Au(111) reconstruction plays a larger role than anticipated in the low-density phase of alkanethiol monolayers. A new structure is proposed for the 1-decanethiol monolayer that impacts the low-energy vibrational mode. Varying the alkane chain lengths imparts insight into the assembly process via characterization of a dispersionless phonon mode.
520 $a Studies of SF6 physisorbed on Au(111) bridge surface research on rare gas adsorbates with complicated dynamical organic thin films. Mono- and bilayer coverages of SF6/Au(111) were studied at cryogenic temperatures. Our experiments probed the surface properties of SF6 yielding insights into substrate and coverage effects. The study discovered a dispersionless Einstein oscillation with multiple harmonic overtones. A second layer of SF6 softened the mode, but did not show any indications of bulk or cooperative interactions. The vibrational properties of SF 6 showed both striking similarities and differences when compared with physisorbed rare gases.
520 $a Lastly, this thesis will discuss studies of thin film poly(methyl methacrylate) on Si. The non-pertubative and surface specific nature of helium atom scattering allows for a deft study of the relationship between surface motion and the glass transition temperature. An added parameter in this complex organic system is the film thickness. The confinement effects and enhanced surface displacement were examined as a function of the thermal attenuation of both inelastic and elastic helium atom scattering. The Debye-Waller factor for these thin films of PMMA is similar to the low-density alkanethiol self-assembled monolayers discussed earlier.
590 $a School code: 0330.
650 4 $a Chemistry, Physical. $3 560527
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Plastics Technology. $3 1023683
690 $a 0494
690 $a 0794
690 $a 0795
710 2 $a The University of Chicago. $3 1017389
773 0 $t Dissertation Abstracts International $g 66-07B.
790 $a 0330
790 1 0 $a Sibener, Steven J., $e advisor
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3181406