META'17 Incheon
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Photoluminescence and Resonance Raman Spectroscopy of MOCVD Grown
Photoluminescence and Resonance Raman Spectroscopy of MOCVD Grown GaAs/AlGaAs Core-Shell Nanowires A Thesis Submitted to the Faculty of Drexel University by Oren D. Leaer in partial fulllment of the requirements for the degree of Doctorate of Philosophy February 2013 © Copyright 2013 Oren D. Leaer. Figure 5.1 is reproduced from an article copyrighted by the American Physical Society and used with their permission. The original article may be found at: http://link.aps.org/doi/10.1103/PhysRevB.80.245324 Regarding only gure 5.1, the following notice is included as part of the terms of use: Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modied, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society. The rest of this work is licensed under the terms of the Creative Commons Attribution-ShareAlike license Version 3.0. The license is available at: http://creativecommons.org/licenses/by-sa/3.0/. i Dedications To my family: my parents, my sister, and Bubby and Dan. Your support made this possible. Thank you. ii Acknowledgments It is with great pleasure that I am able to thank and acknowledge the individuals and organizations that helped me in the course of my graduate studies. I should begin by thanking my advisor, Dr. Spanier, and my committee, Drs. Livneh, May, Shih, Taheri, and Zavaliangos for supporting me through this rather long process. -
EPA Handbook: Optical and Remote Sensing for Measurement and Monitoring of Emissions Flux of Gases and Particulate Matter
EPA Handbook: Optical and Remote Sensing for Measurement and Monitoring of Emissions Flux of Gases and Particulate Matter EPA 454/B-18-008 August 2018 EPA Handbook: Optical and Remote Sensing for Measurement and Monitoring of Emissions Flux of Gases and Particulate Matter U.S. Environmental Protection Agency Office of Air Quality Planning and Standards Air Quality Assessment Division Research Triangle Park, NC EPA Handbook: Optical and Remote Sensing for Measurement and Monitoring of Emissions Flux of Gases and Particulate Matter 9/1/2018 Informational Document This informational document describes the emerging technologies that can measure and/or identify pollutants using state of the science techniques Forward Optical Remote Sensing (ORS) technologies have been available since the late 1980s. In the early days of this technology, there were many who saw the potential of these new instruments for environmental measurements and how this technology could be integrated into emissions and ambient air monitoring for the measurement of flux. However, the monitoring community did not embrace ORS as quickly as anticipated. Several factors contributing to delayed ORS use were: • Cost: The cost of these instruments made it prohibitive to purchase, operate and maintain. • Utility: Since these instruments were perceived as “black boxes.” Many instrument specialists were wary of how they worked and how the instruments generated the values. • Ease of use: Many of the early instruments required a well-trained spectroscopist who would have to spend a large amount of time to setup, operate, collect, validate and verify the data. • Data Utilization: Results from path integrated units were different from point source data which presented challenges for data use and interpretation. -
Federico Capasso “Physics by Design: Engineering Our Way out of the Thz Gap” Peter H
6 IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, VOL. 3, NO. 1, JANUARY 2013 Terahertz Pioneer: Federico Capasso “Physics by Design: Engineering Our Way Out of the THz Gap” Peter H. Siegel, Fellow, IEEE EDERICO CAPASSO1credits his father, an economist F and business man, for nourishing his early interest in science, and his mother for making sure he stuck it out, despite some tough moments. However, he confesses his real attraction to science came from a well read children’s book—Our Friend the Atom [1], which he received at the age of 7, and recalls fondly to this day. I read it myself, but it did not do me nearly as much good as it seems to have done for Federico! Capasso grew up in Rome, Italy, and appropriately studied Latin and Greek in his pre-university days. He recalls that his father wisely insisted that he and his sister become fluent in English at an early age, noting that this would be a more im- portant opportunity builder in later years. In the 1950s and early 1960s, Capasso remembers that for his family of friends at least, physics was the king of sciences in Italy. There was a strong push into nuclear energy, and Italy had a revered first son in En- rico Fermi. When Capasso enrolled at University of Rome in FREDERICO CAPASSO 1969, it was with the intent of becoming a nuclear physicist. The first two years were extremely difficult. University of exams, lack of grade inflation and rigorous course load, had Rome had very high standards—there were at least three faculty Capasso rethinking his career choice after two years. -
A PARTNER for CHANGE the Asia Foundation in Korea 1954-2017 a PARTNER Characterizing 60 Years of Continuous Operations of Any Organization Is an Ambitious Task
SIX DECADES OF THE ASIA FOUNDATION IN KOREA SIX DECADES OF THE ASIA FOUNDATION A PARTNER FOR CHANGE A PARTNER The AsiA Foundation in Korea 1954-2017 A PARTNER Characterizing 60 years of continuous operations of any organization is an ambitious task. Attempting to do so in a nation that has witnessed fundamental and dynamic change is even more challenging. The Asia Foundation is unique among FOR foreign private organizations in Korea in that it has maintained a presence here for more than 60 years, and, throughout, has responded to the tumultuous and vibrant times by adapting to Korea’s own transformation. The achievement of this balance, CHANGE adapting to changing needs and assisting in the preservation of Korean identity while simultaneously responding to regional and global trends, has made The Asia Foundation’s work in SIX DECADES of Korea singular. The AsiA Foundation David Steinberg, Korea Representative 1963-68, 1994-98 in Korea www.asiafoundation.org 서적-표지.indd 1 17. 6. 8. 오전 10:42 서적152X225-2.indd 4 17. 6. 8. 오전 10:37 서적152X225-2.indd 1 17. 6. 8. 오전 10:37 서적152X225-2.indd 2 17. 6. 8. 오전 10:37 A PARTNER FOR CHANGE Six Decades of The Asia Foundation in Korea 1954–2017 Written by Cho Tong-jae Park Tae-jin Edward Reed Edited by Meredith Sumpter John Rieger © 2017 by The Asia Foundation All rights reserved. No part of this book may be reproduced without written permission by The Asia Foundation. 서적152X225-2.indd 1 17. 6. 8. 오전 10:37 서적152X225-2.indd 2 17. -
Laser Focus World
November 2015 Photonics Technologies & Solutions for Technical Professionals Worldwide www.laserfocusworld.com QCL arrays target IR spectral analysis PAGE 36 Positioning equipment— the foundational tools PAGE 27 Measuring aspheres with interferometry PAGE 41 Tunable laser diode combines QDs and SiP PAGE 45 ® Optical coherence tomography angiography, NIR fluorescence- guided surgery PAGE 55 1511lfw_C1 1 11/2/15 11:54 AM 1511lfw_C2 2 11/2/15 11:54 AM Optimize Your Surface Measurement and Inspection Motion Save 40% Measurement Time and 60% Footprint Traditional Cartesian systems require frequent, time- consuming motion reversals in X and Y to raster-scan a part, which necessitates longer travel ranges to account for inefficiencies in constantly starting and stopping. The vastly superior SMP design utilizes an industry-leading rotational motion profile to deliver smooth, continuous scanning of the part, with no starts and stops, resulting in significantly reduced measurement time and machine footprint. SMP-420 SMP-220 SMP-320 • Reduce measurement time by • Axis repeatability in the low • Ultra-smooth motion even at 40% compared to Cartesian nanometer range very low velocities systems • Nanometer-level minimum • Easily customizable for incremental motion (resolution) • Minimize footprint by 60% customer-specific compared to Cartesian systems measurement processes Z C Spherical Z C Aspheric RR Cylindrical RR C TT TT Z Ph: 412-963-7470 Dedicated to the Email: [email protected] Science of Motion www.aerotech.com AF1114E-TMG 1511lfw_1 1 11/2/15 -
Plasmonics for Laser Beam Shaping
IEEE TRANSACTIONS ON NANOTECHNOLOGY, VOL. 9, NO. 1, JANUARY 2010 11 Plasmonics for Laser Beam Shaping Nanfang Yu, Member, IEEE, Romain Blanchard, Student Member, IEEE, Jonathan Fan, Qi Jie Wang, Christian Pflugl,¨ Laurent Diehl, Tadataka Edamura, Shinichi Furuta, Masamichi Yamanishi, Life Fellow, IEEE, Hirofumi Kan, and Federico Capasso, Fellow, IEEE (Invited Review) Abstract—This paper reviews our recent work on laser beam mostly linearly polarized along a single direction, which is deter- shaping using plasmonics. We demonstrated that by integrating mined by the optical selection rules of the gain medium [2], [3]. properly designed plasmonic structures onto the facet of semicon- Applications will benefit from the availability of a wide range ductor lasers, their divergence angle can be dramatically reduced by more than one orders of magnitude, down to a few degrees. of polarization states: linear polarization along different direc- A plasmonic collimator consisting of a slit aperture and an adja- tions, circular polarizations (clockwise and counterclockwise), cent 1-D grating can collimate laser light in the laser polarization etc. direction; a collimator consisting of a rectangular aperture and Laser beam shaping (i.e., collimation, polarization control) is a concentric ring grating can reduce the beam divergence both conventionally conducted externally using optical components perpendicular and parallel to the laser polarization direction, thus achieving collimation in the plane perpendicular to the laser beam. such as lenses, beam-splitting polarizers, and wave plates [2]. The devices integrated with plasmonic collimators preserve good These optical components are bulky and can be expensive; some room-temperature performance with output power comparable to are available only for certain wavelength ranges. -
Harry Atwater Is Currently Howard Hughes Professor and Professor of Applied Physics and Materials Science at the California Institute of Technology
Harry Atwater is currently Howard Hughes Professor and Professor of Applied Physics and Materials Science at the California Institute of Technology. His research interests center around two intertwined research themes photovoltaics and renewable energy and plasmonics and metamaterials. Atwater and his group have been active in photovoltaics research for more than 20 years. Recently they have pioneered new fabrication approaches to III-V semiconductor multijunction cells, and have actively research projects on III-V thin film cells, silicon wire array solar cells, silicon thin film cells and plasmonic light absorber structures. Atwater received his S.B. (1981), S.M. (1983), and Ph.D. (1987) in Electrical Engineering from the Massachusetts Institute of Technology. He currently serves as Director of the Caltech Center for Sustainable Energy Research, and is also Director of the Center for Light-Material Interactions, a DOE Energy Frontier Research Center. Professor Atwater was most recently named as Director of the Resnick Institute. Dr. Atwater has consulted extensively for industry and government, and has actively served the materials community in various capacities, including Material Research Society Meeting Chair (1997), Materials Research Society President (2000), AVS Electronic Materials and Processing Division Chair (1999), and Board of Trustees of the Gordon Research Conferences. He serves on the Director’s Review Committee, Chemistry and Materials Science Division, Lawrence Livermore National Laboratory. He has served on the Department of Energy, Office of Science, Division of Materials Sciences Visiting Committee; Stanford University Department of Materials Science and Engineering Visiting Committee; National Science Foundation Division of Materials Research Visiting Committee. Atwater is founder and chief technical advisor for Alta Device, a solar energy company, and Aonex Corporation, a compound semiconductor materials company. -
Structure, Chemistry, and Energetics of Organic and Inorganic Adsorbates on Ga-Rich Gaas and Gap(001) Surfaces
Structure, Chemistry, and Energetics of Organic and Inorganic Adsorbates on Ga-Rich GaAs and GaP(001) Surfaces Thesis by Seokmin Jeon In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, California 2014 (Defended September 30, 2013) ii 2014 Seokmin Jeon All Rights Reserved iii “No Pain, No Gain.” iv ACKNOWLEDGEMENTS I remember my wonderful mood when I first visited Caltech as a prospective student. Just before I came to Caltech, I visited the Columbia University, New York for the same purpose. I found everything in Pasadena including weather and people’s attitudes was attractive to me in contrast to what I found in New York. Living and studying in this beautiful place has been my best pleasure. Many individuals have supported, helped, and encouraged me to complete my Ph.D. course at Caltech, so it is my great pleasure to acknowledge them. I would like to thank my advisor, Professor Harry Atwater for his guidance and support. Especially, I appreciate him for providing me a great deal of freedom and independence on my thesis research. He has also shown me the wisdom, leadership, and enthusiasm that a leading scientist owns. My thesis committee, Professors Bill Goddard, Nate Lewis, and Jack Beauchamp are also my role models. It was my pleasure and honor to be advised by such great scientists. Many people in the Atwater group have contributed to the successful completion of my thesis research. Particularly, I would like to thank Jeff Bosco, Victor Brar, Seyoon Kim, Samantha Wilson, Min Jang, Jim Fakonas, Dan Tuner-Evans, Chris Chen, Yulia Tolstova, Hal Emmer, John Lloyd, Carissa Eisler, Siying Peng, Sunita Darbe, Amanda Shing, Imogen Pryce, Michael Kelzenberg, Jonathan Grandidier, Marina Leite, Gerald Miller, Vivian Ferry, Stanley Burgos, Ryan Briggs, Andrew Leenheer, Greg Kimball, Adele Tamboli, Deidre O’Caroll, Domenico Pacifici, Davis Darvish, Morgan Putnam, and Matt Sheldon for sharing their knowledge and skills, having time to discuss about research and science, and being good friends. -
Plasmonics and Metamaterials for Photonics and Solar Energy Conversion
Plasmonics and Metamaterials for Photonics and Solar Energy Conversion Metamaterials and plasmonic materials have yielded new modes of light localization and dispersion control that are not available in ordinary homogeneous photonic media. These have enabled creation of metallodielectric composites with an enhanced local density of optical states and structures that act as slow light structures, greatly enhancing the degree of optical absorption and spontaneous emission. I will begin by surveying the conditions for plasmonic and artificial magnetic response and the resulting conditions for the optical wavevector, power flow, and phase propagation. Then basic nanophotonic motifs for metamaterial and plasmonic structure design will be introduced. New component materials for metamaterials design will be discussed, including conducting oxides, nitrides and two-dimensional materials such as graphene that give rise to electrical tunability of the complex refractive index, examples of integrated photonic device applications will be given. Further, criteria for plasmonic and metamaterial structures in solar energy conversion will be outlined, including designs to maximize absorption of broadband unpolarized radiation over a wide range of incidence angles, as is needed in solar energy conversion applications. Finally, emerging and future directions for nanophotonics, such as exploiting hot carrier excitation and quantum phenomena will be surveyed. Web Resources: LMI-EFRC: http://lmi.caltech.edu/ Atwater Group: http://daedalus.caltech.edu/ Biography Harry Atwater is the Howard Hughes Professor of Applied Physics and Materials Science at the California Institute of Technology. Professor Atwater received his B. S., M. S. and Ph.D. degrees from the Massachusetts Institute of Technology respectively in 1981, 1983 and 1987, and has been a member of the Caltech faculty since 1988. -
Light Management in Photovoltaics and Photoelectrochemical Cells
Light Management in Photovoltaics and Photoelectrochemical Cells using Tapered Micro and Nano Structures Thesis by Sisir Yalamanchili In Partial Fulfillment of the Requirements for the degree of Doctor of Philosophy CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, California 2019 Defended December 5, 2018 © 2018 Sisir Yalamanchili All Rights Reserved i Acknowledgements I would like to begin with thanking Caltech community and the materials science department for the opportunity they provided for me to improve intellectually, professionally, and personally. My last five years at this place has not just made me a better thinker and problem solver, it also gave me the confidence in my abilities and ideas. I am very grateful for my advisers Harry Atwater and Nathan Lewis for giving me the opportunity to be part of their fantastic groups through which I had a chance to find a lot of collaborators for research and some close friends. In these two groups I found a lot like minded individuals who are motivated to find creative solutions for important energy and environment related problems. I want to thank Harry Atwater for constantly encouraging me to go to conferences and network with people, and for being an integral part of the Sunday soccer team. I can only wish to be able to match a twenty something year old in fitness when I am over fifty. I would like to thank Nathan Lewis for giving me all the freedom in the world to figure out my own project, and for dancing and playing games with us after intense scientific discussions during group retreats. Nate’s retreats also gave us, the current members of the group to talk to alumni who are doing wildly different things in their carriers to open our mind to the limitless possibilities. -
Forty-First DOE Solar Photochemistry P.I. Meeting
Proceedings of the Forty-First DOE Solar Photochemistry P.I. Meeting Gaithersburg Marriott Washingtonian Center Gaithersburg, Maryland June 3-5, 2019 Chemical Sciences, Geosciences, and Biosciences Division Office of Basic Energy Sciences Office of Science U.S. Department of Energy FOREWORD The 41st Department of Energy Solar Photochemistry Principal Investigators’ Meeting, sponsored by the Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, is being held June 3-5, 2019 at the Washingtonian Marriott in Gaithersburg, Maryland. These proceedings include the meeting agenda, abstracts of the formal presentations and posters, and a list of participants. The Solar Photochemistry Program supports fundamental, molecular-level research on solar energy capture and conversion in the condensed phase and at interfaces. This conference is the annual meeting of the grantees who conduct research with support from this Program. The gathering is intended to facilitate the exchange of ideas and foster collaboration among these researchers. The meeting this year features an invited presentation by Harry Atwater, Director of the Joint Center for Artificial Photosynthesis (JCAP). JCAP is the Department of Energy’s Fuels from Sunlight Energy Innovation Hub, a multi-investigator research and development center that was established in 2010 and renewed in 2015. Its mission is currently focused on creating a scientific foundation for the solar-driven conversion of carbon dioxide into renewable transportation fuels. Prof. Atwater will tell us about recent JCAP discoveries and research accomplishments. I would like to express my thanks to Justin Johnson who continues to spend part of his time as a detailee for the Solar Photochemistry Program, assisting with numerous critical behind-the- scenes tasks. -
META'17 Incheon
META’17 Incheon - Korea The 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics Program July 25 – 28, 2017 Incheon, Korea metaconferences.org .metaconferences.org META’17 Incheon - Korea The 8th International Conference on Metamaterials, Photonic Crystals and Plasmonics Please share your comments, photos & videos ! www.facebook.com/metaconference @metaconference Edited by Said Zouhdi | Paris-Sud University, France Junsuk Rho | POSTECH, Korea Hakjoo Lee | CAMM, Korea CONTENTS META’17 ORGANIZATION ........................................ 5 PLENARY SPEAKERS ........................................... 7 KEYNOTE SPEAKERS ........................................... 12 META’17 VENUE ............................................... 14 GUIDELINES FOR PRESENTERS ................................... 17 PRE-CONFERENCE TUTORIALS ................................... 18 TECHNICAL PROGRAM .......................................... 30 META’17 ORGANIZATION Said Zouhdi, General Chair Junsuk Rho, General Co-Chair Hakjoo Lee, General Co-Chair Paris–Sud University, France POSTECH, Korea CAMM, Korea INTERNATIONAL ADVISORY COMMITTEE Harry Atwater, USA Graeme W. Milton, USA Ari Sihvola, Finland Federico Capasso, USA Raj Mittra, USA David R. Smith, USA Andre de Lustrac, France Manuel Nieto-Vesperinas, Spain J(Yiannis) Vardaxoglou, UK Nader Engheta, USA Susumu Noda, Japan Martin Wegener, Germany Teruya Ishihara, Japan Masaya Notomi, Japan Xiang Zhang, USA Tatsuo Itoh, USA Yahya Rahmat-Samii, USA Nikolay Zheludev, UK Yuri Kivshar, Australia