Index Catalog // ScholarsArchive@OSU

Global Existence and Energy Decay Rates for a Kirchhoff-Type Wave Equation with Nonlinear Dissipation

Creator:: Kim, Daewook, Kim, Dojin, Hong, Keum-Shik, and Jung, Il Hyo
Abstract:: The first objective of this paper is to prove the existence and uniqueness of global solutions for a Kirchhoff-type wave equation with nonlinear dissipation of the form Kuⁿ + 𝑀(|𝐴¹/²𝑢|²)𝐴𝑢 + 𝑔(𝑢')=0 under suitable assumptions on 𝐾, 𝐴, 𝑀(⋅), and 𝑔(⋅). Next, we under some growth conditions on the nonlinear...
Resource Type:: Article
Full Text:: with Nonlinear Dissipation Daewook Kim,1 Dojin Kim,2 Keum-Shik Hong,3 and Il Hyo Jung1 1 Department

Terahertz imaging and spectroscopy of carbon-based and semiconductor nanostructures

Creator:: Tomaino, Joseph L.
Abstract:: This thesis will cover work that I have completed relating to the field of terahertz (THz) science. My work has consisted of generating tunable, narrowband THz pulses in a table-top optical setup and using both narrow- and broadband THz pulses to study various material systems. Broadband THz pulses were used...
Resource Type:: Dissertation
Full Text:: Spectroscopy of Carbon-Based and Semiconductor Nanostructures. Abstract approved: Yun-Shik Lee

Nonlinear terahertz spectroscopy of carbon nanomaterials and semiconductor nanostructures

Creator:: Paul, Michael Jason
Abstract:: This thesis will cover my work relating to the developing field of terahertz (THz) science and technology. It will present experimental and theoretical studies investigating the optical and electrical properties of various material systems using novel THz imaging and spectroscopy techniques. Due to its low photon energy, THz imaging and...
Resource Type:: Dissertation
Full Text:: -Shik Lee This thesis will cover my work relating to the developing field of terahertz (THz) science

Electronic and Optical Properties of Organic Semiconductors : Experiment and Simulation

Creator:: Johnson, Brian
Abstract:: The continued development of organic semiconductor materials relies on an understanding of the relationship between optoelectronic properties, molecular structure, and molecular interaction. Several detailed studies of electronic properties in functionalized polyacene materials are presented. A computational model which allows the extraction of charge generation and transport properties from experimental data...
Resource Type:: Dissertation
Full Text:: model developed in the late 1970s by Noolandi and Hong.30 This solution for the dissociation rate

Modeling, Fabrication, and Characterization of Magnetic Thin Films for Integrated Inductor and MRAM Applications

Creator:: Buford, Benjamin
Abstract:: Magnetic thin films have potential to improve devices such as on-chip inductors, and enable new technologies such as magnetic random access memory (MRAM). The use of magnetic cores in on-chip inductors is typically limited to applications well under 1 GHz. At higher frequencies, the performance of the magnetic core is...
Resource Type:: Dissertation
Full Text:: served on my committee: Dr. Raviv Raich, Dr. An- dreas Weisshaar, Dr. Yun-Shik Lee, Dr. Christine Kelly

Femtosecond Stimulated Raman Studies of Excited State Structural Events

Creator:: Tang, Longteng
Abstract:: Femtosecond stimulated Raman spectroscopy (FSRS) is an ultrafast vibrational technique which allows rapid collection of Raman spectra with simultaneously high temporal and spectral resolution. With the recent development of FSRS methodology, three FSRS techniques (conventional, tunable, and anti-Stokes) have been implemented in our laboratory to dissect the excited state structural...
Resource Type:: Dissertation
Full Text:: thank Professor Michael Lerner, Professor Yun-Shik Lee and Professor Chih-hung Chang for severing on

Optical Development and Materials Applications of Tunable Femtosecond Stimulated Raman Spectroscopy

Creator:: Zhu, Liangdong
Abstract:: To obtain a mechanistic understanding of the chemical processes, techniques that offer a frame-by-frame visualization of molecular structure during a reaction are of vital importance. Numerous efforts and advances have been made in order to acquire such vivid molecular “movies”, especially in the electronic excited state. Ultrafast molecular spectroscopy method...
Resource Type:: Dissertation
Full Text:: along the way. I would like to thank Dr. Sean Burrows, Dr. Stephen Lancaster, Dr. Yun-Shik Lee and Dr

Graphite intercalation with fluoroanions by chemical and electrochemical methods

Creator:: Özmen Monkul, Bahar
Abstract:: New acceptor-type graphite intercalation compounds (GICs) containing perfluoroalkyl anions have been synthesized by using both chemical and electrochemical methods and characterized by elemental and thermogravimetric analyses. Investigation into these graphite intercalation compounds can provide novel materials and a detailed understanding of their properties. GICs of composition Cx[FB(C₂F₅)₃]·δF are prepared for...
Resource Type:: Dissertation
Full Text:: . I would like to thank Profs. William H. Warnes, John Simonsen, Staci L. Simonich, Yun-Shik Lee and

High-Contrast Imaging of Graphene via Time-Domain Terahertz Spectroscopy

Creator:: Tomaino, J. L., Jameson, A. D., Paul, M. J., Kevek, J. W., van der Zande, A. M., Barton, R. A., Choi, H., McEuen, P. L., Minot, E. D., and Lee, Yun-Shik
Abstract:: We demonstrate terahertz (THz) imaging and spectroscopy of single-layer graphene deposited on an intrinsic Si substrate using THz time-domain spectroscopy. A single-cycle THz pulse undergoes multiple internal reflections within the Si substrate, and the THz absorption by the graphene layer accumulates through the multiple interactions with the graphene/Si interface. We...
Resource Type:: Article
Full Text:: Zande, 2 R.A. Barton, 3 H. Choi, 4 P.L. McEuen, 2,5 E.D. Minot, 1 and Yun-Shik Lee 1

Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes

Creator:: Paul, M. J., Kuhta, N. A., Tomaino, J. L., Jameson, A. D., Maizy, L. P., Sharf, T., Rupesinghe, N. L., Teo, K. B. K., Inampudi, S., Podolskiy, V. A., Minot, E. D., and Lee, Yun-Shik
Abstract:: We demonstrate time-resolved terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes. The angle-resolved transmission measurements reveal anisotropic characteristics of the terahertz electrodynamics in multi-walled carbon nanotubes. The anisotropy is, however, unexpectedly weak: the ratio of the tube-axis conductivity to the transverse conductivity, sigma[subscript z]/sigma[subscript xy] [similar or equal to]...
Resource Type:: Article
Full Text:: . Sharf,1 N. L. Rupesinghe,2 K. B. K. Teo,2 S. Inampudi,3 V. A. Podolskiy,3 E. D. Minot,1 and Yun-Shik

ScholarsArchive@OSU

Global Existence and Energy Decay Rates for a Kirchhoff-Type Wave Equation with Nonlinear Dissipation

Terahertz imaging and spectroscopy of carbon-based and semiconductor nanostructures

Nonlinear terahertz spectroscopy of carbon nanomaterials and semiconductor nanostructures

Electronic and Optical Properties of Organic Semiconductors : Experiment and Simulation

Modeling, Fabrication, and Characterization of Magnetic Thin Films for Integrated Inductor and MRAM Applications

Femtosecond Stimulated Raman Studies of Excited State Structural Events

Optical Development and Materials Applications of Tunable Femtosecond Stimulated Raman Spectroscopy

Graphite intercalation with fluoroanions by chemical and electrochemical methods

High-Contrast Imaging of Graphene via Time-Domain Terahertz Spectroscopy

Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes

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