77,897 research outputs found
TRAN Quyet Thang
No full text학위논문(박사)--아주대학교 일반대학원 :전자공학과,2017. 2CHAPTER 1: INTRODUCTION 1
1.1 Introduction to Light Modulating Devices 1
1.2 Introduction to Graphene 1
1.3 Overview of the Numerical Methods 3
1.4 Organization of Dissertation 7
CHAPTER 2: TUNABLE WIDE-ANGLE TUNNELING IN GRAPHENE-ASSISTED FRUSTRATED TOTAL INTERNAL REFLECTION 9
2.1 Introduction 9
2.2 Frustrated Total Internal Reflection (FTIR) Effect 10
2.3 Controllable Wide Angle Tunneling Effect with ENZ Effect in FTIR Configuration 11
2.4 Waveguide-type optical modulator based on a GA-FTIR structure 20
2.5 Chapter Summary 26
CHAPTER 3: LOW LOSS ELECTRICALLY CONTROLLABLE VERTICALLY COUPLED DIRECTIONAL COUPLER 28
3.1 Introduction 28
3.2 Vertically Coupled Directional Coupler 29
3.3 Chapter Summary 40
CHAPTER 4: OPTICAL PHASE MODULATOR BASED ON GRAPHENE EMBEDDED ALL PASS FILTER 42
4.1 Introduction 42
4.2 Phase Modulating All Pass Filter with Graphene 42
4.3 Chapter Summary 48
CHAPTER 5: COUPLED MODE THEORY OF PERFECT GRAPHENE ABSORBERS IN DUAL-MODE/SINGLE-MODE COUPLED RESONATORS SYSTEM 50
5.1 Introduction 50
5.2 Dual Mode - Single Mode Coupled Resonators System 51
5.3 Temporal Coupled Mode Theory of the "Triple-mode absorber" 52
5.4 Numerical verification of the CMT 59
5.5 Chapter Summary 66
CHAPTER 6: CONCLUSION AND FUTURE WORK 68
6.1 Conclusion 68
6.2 Future Work 68
REFERENCES 70
APPENDIX: AUTHOR'S PUBLICATIONS LIST 79DoctoralOne of the most important component of integrated photonics is a class of devices known as light modulation devices, which allow us to modulate and manipulate the flow of light, similar to the role transistor played in electronics. Only recently introduced, but graphene have shown incredible promises as a "miracle" material in electronics, with properties ranging from zero band gap, very high electrical mobility, ultra broadband optical responses, and the ability to drastically modify its optical properties through chemical or electrical doping.
In this dissertation, the author presented several unique nanostructures to exploit the aforementioned graphene characteristics to create light modulation devices with superior performance characteristics. Novel effects including wide angle extraordinary reflection causes by epsilon near zero effect and wide angle extraordinary transmission causes by coupling of plasmonic supermodes, phase modulation with near unity amplitude transmission with all pass filter, and graphene perfect absorber with a coupled system of dual mode/single mode resonator was thoroughly investigated, theoretically and numerically. The effects was also presented in practical nanostructures better suited for applications, which are also numerically investigated with various numerical methods
Oral History of Tuan Duc Tran
No full textMy narrator is Mr. Tuan Duc Tran. He was born on July 20th, 1965 in Da Lat, Vietnam. He moved to America in 1993, first stopping by Thailand and the Philippines. Mr. Tran is one out of seven siblings. In Vietnam, he earned his degree in mechanical engineering. His father was a colonel in southern Vietnam and was imprisoned from 1975 until 1980 and was eventually freed and subsequently defected to the U.S. Mr. Tran’s father sponsored the entire family to come to California, first settling in Fremont located in the Bay Area, where he obtained an AA from Ohlone community college. His mother passed away just four years after moving to the US. Mr. Tran is married and has one son. In our interview, we discuss his life in Vietnam, adjusting to American culture, the difference between Vietnamese and American academics, and how he ended up moving to Fountain Valley, where he now lives and works in production management in the health field.Recorded digitall
Interview with Cam Phan
No full textTran comes from a Catholic Vietnamese family, surrounded by unique influences of traditional Confucian values regarding women and marriage in addition to Christian values. Family life and interpersonal relationships were highly dependent on how they would appear to the community. She married a South Vietnamese army officer who was absent most of the time. Tran and her husband were separated during the evacuation but reunited two and a half months later. With the help of a local church, she settled into her new life before moving to Kansas City. She implies that her attempt to learn English was not as successful as she hoped. However, she is glad to live a more stable life in the US. She gives a detailed story about her family footage and how the experience in the US can greatly differ for each family member.An interview with Phan-Michelle Tran (the interviewer’s mother) covers her life in Vietnam and experience evacuating to the US after the Fall of Saigon. The interview is mostly in Vietnamese with some English.Center for East Asian Studies, University of Kansa
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Protecting Animals 36: Author Witi Ihimaera
No full textIn this very special episode of Knowing Animals I am joined by beloved New Zealand author Witi Ihimaera. Witi has written many books featuring nonhuman animals. He offers us a non-colonial lens through which to think about the human/nonhuman relationship
The TPP/Labor Side Agreement and Vietnamese Workers
No full textAngie Tran explores what the the US/Vietnam Labor Side Agreement means for workers’ rights in Vietnam
Mendeley Supplement Materials for "Examining the burden of psoriasis and psoriatic arthritis in a diverse US adult cohort using the All of Us Research Program"
No full textContains Mendeley Supplementary Methods, Table I, and Table I
India-US Network Enabled R/E Collaboration Workshop #1
No full textThe workshop report from the Second India-US Network Enabled R/E Collaboration Workshop will also be made available on ScholarWorks.The workshop brought together networking experts and domain scientists from India and the US to provide an opportunity for scientists and researchers to understand the current state and future plans for networking and cyberinfrastructure in general in India and the US and for US and Indian researchers and their graduate students to establish and strengthen research relationships resulting in increased scientific collaboration between the two countries. We welcomed speakers from a wide variety of science fields including geosciences, climate change, bioinformatics, astronomy and nanotechnology.This material is based upon work supported by the National Science Foundation under Grant No. OISE 0960487. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
sj-docx-1-aor-10.1177_00034894211060902 – Supplemental material for Trends in Nasal Spray Prescribing Patterns by Otolaryngologists in the US Medicare Population
No full textSupplemental material, sj-docx-1-aor-10.1177_00034894211060902 for Trends in Nasal Spray Prescribing Patterns by Otolaryngologists in the US Medicare Population by Celeste Kim, Erica Tran, Ian Kim and Kevin Hur in Annals of Otology, Rhinology & Laryngology</p
The Christian Right and US Foreign Policy in the Twenty-first Century
No full textThe thesis discusses the role of the Christian Right in the US foreign policy decision making process. The research revealed that the Christian Right has long been fascinated with some international issues in general and US foreign policy in particular. The Christian Right’s interest in international issues increased markedly during years of the George W. Bush presidency. It successfully widened its activities from domestic social conservative issues to foreign policy issues by participating in, articulating and lobbying for its religious version of American foreign policy. In assessing the role of the Christian Right in US foreign policy making, this dissertation examines three aspects of US foreign policy, namely Israel, international religious freedom and global humanitarianism. Based on these aspects, the Christian Right is seen as skilled in framing and defining issues. The Christian Right seems effective in selecting and prioritizing international issues that have a reasonable chance of being selected by foreign policy decision makers, especially in Congress. Moreover, the Christian Right has shown its maturity in seeking engagement and cooperation with other organizations, secular and religious, in order to advance its international goals. Finally, in pursuing and conveying its international agenda, the Christian Right has adopted a more moderate and less overtly religious approach. Instead of using its traditional religious rhetoric, the Christian Right has successfully projected its foreign policy preferences into the conventional realist discourse of American foreign policy that is largely based on the objective of national interest and national security. Nevertheless, this study does not, in any way, conclude that the Christian Right was able to influence or determine the direction of US foreign policy and its outcomes; however, it does suggest that the Christian Right did contribute and have an impact on the formulation of some US foreign policy. As such, the research contends that the role of the Christian Right is similar to other interest group lobbies and that its perceived influence on US foreign policy should not be exaggerated. Finally, the research suggests that the emergence of the Christian Right as an actor in asserting its global agenda through US foreign policy can possibly provide an example of how religious beliefs and values can become a potential source of “soft power”. Together with the “climate of opinion” of the American public during the Bush administration, the “soft power” at domestic level could serve as a valuable new explanatory variable in understanding how the US foreign policy was formulated in the early 21st century
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