Daniel B. O’Brien
University of Minnesota
9 Papers
87 Citations
Daniel B. O’Brien is an academic researcher from University of Minnesota. The author has contributed to research in topics: Thin film & Thin-film interference. The author has an hindex of 8, co-authored 9 publications.
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Papers
Monitoring the Charge Accumulation Process in Polymeric Field-Effect Transistors via in Situ Sum Frequency Generation
TL;DR: In this paper, the authors used VSFG spectroscopy to probe the polymer-silica interface of poly(3-hexylthiophene) (P3HT) organic field-effect transistors (oFETs) in situ during device operation.
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Simulated vibrational sum frequency generation from a multilayer thin film system with two active interfaces
TL;DR: The results show that proper modeling of thin film interference effects is essential for accurate data analysis and should include the frequency dependent refractive indices, especially for modes with larger mIR absorption cross sections, even when absorptive losses are small.
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A Methodology for the Design and Verification of Globally Asynchronous/Locally Synchronous Architectures
Steven P. Miller,Michael W. Whalen,Daniel B. O’Brien,Mats P. E. Heimdahl,Anjali Joshi +4 more
- 28 Jun 2013
TL;DR: This report describes a methodology for developing and reasoning about complex synchronous systems and illustrates this process by applying it to the synchronization logic of a Dual Fight Guidance System, evolving the system from an ideal case in which the components do not fail and communicate synchronously to one inwhich the components can fail and communication asynchronously.
Experimental evidence for an optical interference model for vibrational sum frequency generation on multilayer organic thin film systems. II. Consideration for higher order terms
TL;DR: The procedure outlined in this work allows for the difficult task of deducing a physical picture of average molecular orientation at the buried interface of a multilayer organic thin film system while including higher order effects.
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Surface chemistry and annealing-driven interfacial changes in organic semiconducting thin films on silica surfaces.
TL;DR: Electrical characterization of PTCDI-C(8) field-effect transistors indicated that electron mobilities were higher on bare substrate devices but could be improved by a factor of 2 on both surface types by thermal annealing.
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