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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. -
Mahindra University, Hyderabad
Mahindra University, Hyderabad Hyderabad An exclusive Guide by Mahindra University, Hyderabad Reviews on Placements, Faculty & Facilities Check latest reviews and ratings on placements, faculty, facilities submitted by students & alumni. Reviews (Showing 17 of 17 reviews) Overall Rating (Out of 5) 4.4 Based o n 16 Verif ied Reviews Distribution of Rating >4-5 star 75% >3-4 star 25% >2-3 star 0% 1-2 star 0% Component Ratings (Out of 5) Placements 4.0 Infrastructure 4.9 Faculty & Course 4.6 Curriculum Crowd & Campus Life 4.6 Value for Money 3.9 The Verif ied badge indicates that the reviewer's details have been verified by Shiksha, and reviewers are bona f ide students of this college. These reviews and ratings have been given by students. Shiksha does not endorsed the same. Out of 17 published reviews, 16 reviews are verif ied. S Saksham Rajput | B.Tech. in Civil Engineering - Batch of 2023 Verified Reviewed on 28 Jun 2021 5.0 Placements 5 Infrastructure 5 Faculty & Course Curriculum 5 Crowd & Campus Life 5 I am satisfied with this college. It provides good placements. Placements: Almost 100% of the students from our course got placed. The highest salary package offered in 2019 is 35 LPA, and the average salary package offered ranges between 9-10 LPA. The lowest salary package offered is 5 LPA. Many students get an internship in Disclaimer: This PDF is auto-generated based on the information available on Shiksha as on 23-Sep-2021. the 3rd year. The college is very good at placements. Infrastructure: In the civil engineering course, there are a lot of facilities for students. -
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. -
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. -
The Latest Research in Optical Engineering and Applications, Nanotechnology, Sustainable Energy, Organic Photonics, and Astronomical Instrumentation
OPTICS + PHOTONICS• The latest research in optical engineering and applications, nanotechnology, sustainable energy, organic photonics, and astronomical instrumentation ADVANCE THIS PROGRAM IS CURRENT AS OF TECHNICAL APRIL 2015. SEE UPDATES ONLINE: PROGRAM WWW.SPIE.ORG/OP15PROGRAM Conferences & Courses San Diego Convention Center 9–13 August 2015 San Diego, California, USA Exhibition 11–13 August 2015 CoNFERENCES EXHIBITION AND CoURSES: 11–13 AUGust 2015 9–13 AUGust 2015 San Diego Convention Center San Diego, California, USA Hear the latest research on optical engineering and applications, sustainable energy, nanotechnology, organic photonics, and astronomical instrumentation. ATTEND 4,500 Attendees Network with the leading minds SPIE OPTICS + in your discipline. PHOTONICS The largest international, multidisciplinary optical science 3,350 Papers and technology meeting in North Hear presentations America. on the latest research. 38 Courses & Workshops You can’t afford to stop learning. 180-Company Exhibition See optical devices, components, materials, and technologies. Contents Metamaterials, plasmonics, CNTs, Events Schedule . 2 graphene, thin films, spintronics, nanoengineering, optical trapping, SOCIAL, TECHNICAL, AND nanophotonic materials, nanomedicine, NETWORKING EVENTS Low-D and 2D materials - Technical ............................. 3-4 - Industry................................ 5 - Social Networking....................... 6 - Student .............................. 6-7 - Professional Development ............... 7 Thin films, concentrators, -
Federico Capasso
Federico Capasso ADDRESS: John A. Paulson School of Engineering and Applied Sciences Harvard University 205 A Pierce Hall 29 Oxford Street Cambridge MA 02138 PHONE: (617) 384-7611 FAX: (617) 495-2875 EMAIL: [email protected] PERSONAL: Married; two children CITIZENSHIP: Italian and U.S. (Naturalized; 09/23/1992) EDUCATION: 1973 Doctor of Physics, Summa Cum Laude University of Rome, La Sapienza, Italy 1973-1974 Postdoctoral Fellow Fondazione Bordoni, Rome, Italy ACADEMIC APPOINTMENTS Jan. 2003- Present Robert Wallace Professor of Applied Physics Vinton Hayes Senior Research Fellow in Electrical Engineering, John A. Paulson, School of Engineering and Applied Sciences, Harvard University, PROFESSIONAL POSITIONS: 2000 – 2002 Vice President of Physical Research, Bell Laboratories Lucent Technologies, Murray Hill, NJ 1997- 2000 Department Head, Semiconductor Physics Research, Bell Laboratories Lucent Technologies, Murray Hill, NJ. 1987- 1997 Department Head, Quantum Phenomena and Device Research, Bell Laboratories Lucent Technologies (formerly AT&T Bell Labs, until 1996), Murray Hill, NJ 1984 – 1987 Distinguished Member of Technical Staff, Bell Laboratories, Murray Hill, NJ 1977 – 1984 Member of Technical Staff, Bell Laboratories, Murray Hill, NJ 1976 – 1977 Visiting Scientist, Bell Laboratories, Holmdel, NJ 1974 – 1976 Research Physicist, Fondazione Bordoni, Rome, Italy Citations (Google Scholar) Over 93000 H-index (Google Scholar) 144 Publications Over 500 hundred peer reviewed journals Patents 70 US patents KEY ACHIEVEMENTS 1. Bandstructure Engineering and Quantum Cascade Lasers (QCLs) Capasso and his Bell Labs collaborators over a 20-year period pioneered band-structure engineering, a technique to design and implement artificially structured (“man-made”) semiconductor, materials, and related phenomena/ devices, which revolutionized heterojunction devices in photonics and electronics. -
Mahindra University, Hyderabad
Mahindra University, Hyderabad www.mahindrauniversity.edu.in Ecole Centrale School of Engineering Admission Notification for M.Tech. programmes (Academic Year 2021-22) École Centrale School of Engineering, Mahindra University (MU) Hyderabad, which has been offering several four-year B.Tech. degree programs in engineering since 2014 in partnership with the École Centrale Group of Institutions of France now announces admissions to its 1st Batch of two interdisciplinary M.Tech. programs commencing from the academic year 2021-22. These fully residential M.Tech. programs are aimed to create post graduate engineers with the unique ability to adapt to global engineering challenges and adopt new technologies that would help redefine the future, train and prepare Engineers to meet the challenge of interdisciplinary complexities demanded by multinational organizations. Sponsored by Mahindra Educational Institutions (MEI), a subsidiary of Tech Mahindra, the flagship IT company of the Mahindra Group, Mahindra University's purpose is 'To educate future citizens for and of a better world’. MU’s overarching Vision is to • Train multi-skilled leaders capable of reflection as well as innovation, committed to inclusive and sustainable progress • Aim for interdisciplinary academic excellence by integrating the study of science and technology with liberal arts covering humanities, ethics and philosophy, and design thinking • Balance education with experience through entrepreneurial projects to solve complex challenges facing society. MU has an international -
Professor Federico Capasso Harvard University
Professor Federico Capasso Harvard University Q. Tell us a little bit about your current research activities. A. My research on QCLs centres on develop- ing new broadband sources, and in particular broadband mid-infrared spectrometers on a chip; high power/high power efficiency continuous-wave QCLs, beam engineered QCLs, as well new terahertz sources based on intracavity difference frequency generation. A significant portion of my QCL research is industry driven through collaborations with major industrial players. I also have a fairly large effort in plasmonics and metamaterials where we are exploring both novel pheno- mena, device applications and new fabrication techniques based on soft lithography and colloidal chemistry. In particular, we have recently shown that by structuring the facet of a terahertz QCL as a metamaterial, the normally highly divergent terahertz radiation can be highly collimated. Finally, we are FEDERICO CAPASSO is the Robert Wallace putting unreasonable obstacles in the career Professor Federico Capasso investigating optical forces that arise between Professor of Applied Physics in the School of of ambitious and talented young people. So (centre), Dr Nanfang Yu (right) waveguides and other photonic components and graduate student Mikhail Engineering and Applied Sciences at Harvard I decided to spend two years in a telecom Kats (left) in the Capasso in close proximity, as well as quantum University, Cambridge, MA. He is a member government laboratory; I gained experience in Laboratory in the School electrodynamical forces generated by of the US National Academy of Sciences and fibre optics, and then, at the first opportunity, of Engineering and Applied quantum fluctuations of vacuum and matter, Science at Harvard University of the National Academy of Engineering, and I landed in United States at Bell Labs in 1976. -
April 8-11, 2019 the 2019 Franklin Institute Laureates the 2019 Franklin Institute AWARDS CONVOCATION APRIL 8–11, 2019
april 8-11, 2019 The 2019 Franklin Institute Laureates The 2019 Franklin Institute AWARDS CONVOCATION APRIL 8–11, 2019 Welcome to The Franklin Institute Awards, the range of disciplines. The week culminates in a grand oldest comprehensive science and technology medaling ceremony, befitting the distinction of this awards program in the United States. Each year, the historic awards program. Institute recognizes extraordinary individuals who In this convocation book, you will find a schedule of are shaping our world through their groundbreaking these events and biographies of our 2019 laureates. achievements in science, engineering, and business. We invite you to read about each one and to attend We celebrate them as modern day exemplars of our the events to learn even more. Unless noted otherwise, namesake, Benjamin Franklin, whose impact as a all events are free and open to the public and located scientist, inventor, and statesman remains unmatched in Philadelphia, Pennsylvania. in American history. Along with our laureates, we honor Franklin’s legacy, which has inspired the We hope this year’s remarkable class of laureates Institute’s mission since its inception in 1824. sparks your curiosity as much as they have ours. We look forward to seeing you during The Franklin From shedding light on the mechanisms of human Institute Awards Week. memory to sparking a revolution in machine learning, from sounding the alarm about an environmental crisis to making manufacturing greener, from unlocking the mysteries of cancer to developing revolutionary medical technologies, and from making the world III better connected to steering an industry giant with purpose, this year’s Franklin Institute laureates each reflect Ben Franklin’s trailblazing spirit. -
Mahindra Mohammed
THE PARTNERS POST WWW.MAHINDRAPARTNERS.COM A MAHINDRA PARTNERS PUBLICATION NOVEMBER 2020 2nd October 1945 Mahindra MohaMMed A significant combination, which represents what might well be termed a co- operative effort to secure for India that industrial development so indispensable to the full realisation of her future dreams. You have heard of plans, many plans, in this connection. Now comes a positive, concrete and co-ordinated scheme to develop India’s resources and raise the standard of living of the masses. Devised by an Indian business man after a careful three-year study of American wartime achievements, it has secured the support and ready assistance of a group of business men with long experience and a firm faith in their country’s destiny. In their anxiety to further the industrial and agricultural development of this country, the founders of this co-operative organisation believe that they must have the support of those who will benefit most – the general public – and to secure that support it is essential that their aims and objects should be generally acceptable. Here, then, are the principles which will guide their future activities – FIRSTLY, encouragement of private enterprise and the initiative of the individual. SECONDLY, belief in the ability of corporate institutions to oppose anti-social trends, such as monopolies and cartels. THIRDLY, recognition of the fact that the labourer is worthy of his hire and that in co-operative working lies the dignity of human toil. FOURTHLY, confidence in the ultimate success of their ventures and in the capacity and aptitude of the people to give effect to them.