Page 1 JB PENDRY - CV & PUBLICATION LIST
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Commencement Program
Sunday, the Sixteenth of May, Two Thousand and Ten ten o’clock in the morning ~ wallace wade stadium Duke University Commencement ~ 2010 One Hundred Fifty-Eighth Commencement Notes on Academic Dress Academic dress had its origin in the Middle Ages. When the European universities were taking form in the thirteenth and fourteenth centuries, scholars were also clerics, and they adopted Mace and Chain of Office robes similar to those of their monastic orders. Caps were a necessity in drafty buildings, and Again at commencement, ceremonial use is copes or capes with hoods attached were made of two important insignia given to Duke needed for warmth. As the control of universities University in memory of Benjamin N. Duke. gradually passed from the church, academic Both the mace and chain of office are the gifts costume began to take on brighter hues and to of anonymous donors and of the Mary Duke employ varied patterns in cut and color of gown Biddle Foundation. They were designed and and type of headdress. executed by Professor Kurt J. Matzdorf of New The use of academic costume in the United Paltz, New York, and were dedicated and first States has been continuous since Colonial times, used at the inaugural ceremonies of President but a clear protocol did not emerge until an Sanford in 1970. intercollegiate commission in 1893 recommended The Mace, the symbol of authority of the a uniform code. In this country, the design of a University, is made of sterling silver throughout. gown varies with the degree held. The bachelor’s Significance of Colors It is thirty-seven inches long and weighs about gown is relatively simple with long pointed Colors indicating fields of eight pounds. -
Millennium Development Holes
www.nature.com/nature Vol 446 | Issue no. 7134 | 22 March 2007 Millennium development holes The political commitment to helping the developing world is failing to deliver on its promises. The problem is made worse by the questionable evaluation of progress. n 2000, 189 world leaders committed to eight Millennium Devel- few developing countries have any data for around 1990, the baseline opment Goals (MDGs), ranging from halving extreme poverty and year. It is impossible to estimate progress for most of the indicators Ihunger, and rolling back killer diseases such as AIDS and malaria, over less than five years, and sparse poverty data can only be reliably to providing universal primary education. The deadline of 2015 to compared over decades. To pretend that progress towards the 2015 achieve all these ambitious goals is now rapidly approaching. goals can be accurately and continually measured is false. As a rallying cry that has pushed development up the inter national Significant efforts are now being made to improve data collection. political agenda, the goals have been an indisputable success. They Meanwhile, UN agencies fill in the missing data points using ‘model- have also, for better or worse, conferred power and legitimacy on ling’ — in practice, a recipe for potentially misleading extrapolation interests within the international aid machine, in particular the and political tampering. United Nations (UN) and the World Bank. Indeed, the lack of data makes it impossible not only to track But the goals are ultimately political promises, and as such they progress, but also to assess the effectiveness of measures taken. -
Bending Back Light the Science of Negative Index Materials
Bending Back Light The Science of Negative Index Materials Costas M. Soukoulis Using the right type of man-made materials, light can be made to bend, or refract, backwards. After years of painstakingly developing and testing the necessary materials, hen light enters specially engineered materials scientists are now called metamaterials, it takes a sharp turn to the looking to translate W left—a negative turn—bending in the opposite direction of light going through natural materials. Scientists fre- negative refraction into quently refer to these unique synthetic materials as left-handed positive applications materials (LHMs) or negative index materials (NIMs). Since the first demonstration of an artificial negative refrac- such as sub-wavelength, tive index material in 2000, metamaterials have drawn consid- high-resolution erable attention from scientists because of their broad range of potential applications. For example, they may one day lead to imaging across the the development of a flat superlens that operates in the visible electromagnetic spectrum, which would offer superior resolution over conven- tional technology and provide images much smaller than one spectrum. wavelength of light. Photo by Timothy Finegan 16 | OPN June 2006 1047-6938/06/06/0016/6-$15.00 ©OSA Costas Soukoulis examines one of the photonic crystals that was construct- ed to observe negative refraction and superlensing in the microwave region of the electromagnetic spectrum. Photo by Dennis Sailsbury, Ames Lab They also have many promising applications for defense magnetic responses in materials naturally occur over different and security. Because NIMs can match the impedance, or the frequency ranges, making their overlap unlikely. -
The Physics of Negative Refraction and Transformation Optics
The Physics of Negative Refraction and Transformation Optics by Wei Hsiung Wee Thesis submitted for the degree of Doctor of Philosophy Condensed Matter Theory Group Department of Physics Imperial College London June 2011 Declaration of Originality This thesis is a result of the author’s own work. All other work contained within are appropriately referenced to the best of the author’s knowledge. Abstract Whilst optics is one of the oldest field in science, there are still aspects of electromag- netism that we are only beginning to uncover. For instance, it was demonstrated that materials with simultaneously negative permittivity and permeability exhibit certain exotic behavior; where familiar physical phenomena, such as refraction, are reversed. As such, these materials came to be known as negative refractive index materials (NRIM) and their collective properties as negative refraction. One of the most important and remarkable property of NRIM is perfect lensing - the ability to transport both supra and sub-wavelength optical information from one surface (ob- ject plane) to another (image plane), forming images with unprecedented resolution, beyond the diffraction limit. Perfect lensing itself is a consequence of deeper sym- metries in electromagnetism, encapsulated in the language of transformation optics - with which we have both a descriptive tool to unify diverse electromagnetic con- figuarations, as well as a prescriptive tool to design media which bends light at will. While, such transformation medium and NRIM have been demonstrably realised using metamaterials, several challenges remain, of which loss is the major challenge. It is therefore under this trinity of concepts: metamaterials, negative refraction and transformation optics that this thesis is presented. -
Professor Sir John PENDRY Citation
Doctor of Science honoris cαusa Professor Sir John PENDRY Citation Today, we see Professor Sir John Pendry sitting altering his research focus every 10 years or so with us on the stage. In the future being created has helped. Such an approach has taken him from by the transformational work of this eminent developing the first computation techniques for physicist, we may not. For that time, just around low energy electron diffraction to the design of the corner, is not the WYSIWYG world of what novel metamaterials. Exciting旬, such materials you see is what you get. It is of flat lenses, light provide access to properties not found in nature, bending materials, and yes, practical Harry Potter opening up brave new realms that have never invisibility cloaks. been scientifically explored before. In his groundbreaking studies, Sir John has What makes Sir John’s ideas doubly exhilarating made a specialty of venturing into the previously is that he not only produces a concept. He also impossible. From these intellectual travels, the works closely with experimental physicists to Chair Professor of Solid State Physics at Imperial put his work into practice:“If you are going to College London brings back radical new ways of have all this fun with science, you must make viewing the world 一 or not viewing it in some something of 丸” he has said. In doing so, Sir cases. John has transformed the world of physics. In addition, he has re-fired the public’s imagination Relishing the challenge of spotting the anomalies about the significance of field, with the cloak that escape the attention of the rest of us, he of invisibility ironically providing a valuable hurtles forward at a pace as fast as the light he spotlight for physics’ key role in development. -
CUBA NACIONALES 1. Cuba Crea Fondo Para Financiar La Ciencia
EDITOR: NOEL GONZÁLEZ GOTERA Nueva Serie. Número 167 Diseño: Lic. Roberto Chávez y Liuder Machado. Semana 201214 - 261214 Foto: Lic. Belkis Romeu e Instituto Finlay La Habana, Cuba. CUBA NACIONALES Variadas 1. Cuba crea fondo para financiar la ciencia. Radio Rebelde, 2014.12.17 - 22:16:14 / [email protected] / Sandy Carbonell Ramos… Cuba impulsará el financiamiento de la actividad científica con el funcionamiento a partir de enero próximo del Fondo de Ciencia y Tecnología (FONDIT), informo este miércoles la ministra del sector en la Asamblea Nacional del Poder Popular. Con la presencia del miembro del Buro Político y Primer Vicepresidente de los Consejos de Estado y de Ministros, Miguel Díaz- Canel Bermúdez, la titular de Ciencia, Tecnología y Medio Ambiente (Citma), Elba Rosa Pérez Montoya, precisó que ese fondo ya existe y será anunciado ante los parlamentarios cubanos. Al intervenir en la Comisión de Educación, Cultura, Ciencia, Tecnología y Medio Ambiente, Pérez Montoya aseguró que también se ha avanzado en la política del Sistema de Ciencia, cuya propuesta está elaborada y a disposición de la Comisión Permanente de Implementación y Desarrollo de los Lineamientos para su posterior presentación al Consejo de Ministros. Las declaraciones de la ministra respondían además a los planteamientos del diputado por el municipio habanero de La Lisa, Yury Valdés Blandín, quien expuso los criterios de su comisión sobre el 1 reordenamiento de los centros de ciencia e innovación tecnológica, tema central del debate. Valdés Blandín explicó cómo a pesar de los atrasos en este proceso, los señalamientos hechos para su avance también se ven reflejados en el Decreto Ley 323 del CITMA aprobado en agosto último para regir esta tarea. -
2019 Newsletter a Message from the Chair
Quanta&Cosmos Department of Physics and Astronomy | 2019 Newsletter A Message from the Chair It is time for an update from the Department of Physics and Astronomy. The year 2019 marks some positive changes — we are onboarding three new tenure track faculty members as part of our effort to build a cluster in theoretical and computational physics. Computational techniques are playing an increasing role in physics and astrophysics research, helping one provide the missing link between analytical, numerical, and algorithmic approaches for solving fundamental problems in theoretical physics. The department has a long tradition in developing computational techniques to solve physics problems going back to the 1930s. Just 80 years ago (IEEE milestone), John Vincent Atanasoff, with his student Clifford Berry, designed and constructed the first electronic digital computer, the Atanasoff-Berry Computer, which included electronic switches, a capacitor array, and a moving drum memory to solve systems of linear equations. Today’s digital revolution was made possible by the early pioneers of computing, including Alan Turing, John von Neumann, Konrad Zuse, John Atanasoff, and many others, and it continues to enable and accelerate scientific research and our digital lifestyle of today. Clearly, past long-term investments in education and research have paid off. Our graduate and physics majors programs also received a boost this year with 17 incoming graduate students and 25 new physics majors. This brings our total numbers to 90 graduate students, 120 physics majors, and 27 postdoctoral associates. Having that many early career scientists in the department just starting their academic paths makes for an exciting learning/ research environment. -
A Policy for Success
bponline.amcham.gr MAY-JUNE 2014 Vol. XIII | No. 72 Thought Leaders Golden Bullets in Technolgy BUSINESS MATTERS— JIM DAVIS OF NEW BALANCE ▼ PANAGIOTIS G. MIHALOS, SECRETARY GENERAL, MFA ▼ GOOGLE, THE INTERNET, AND IMPACTING SOCIETY ▼ PLUS BIZ BUZZ TRENDS & TRADE MAKERS VIEWPOINT MetLife— AMERICAN-HELLENIC A Policy For Success CHAMBER OF COMMERCE www.amcham.gr Dimitris Mazarakis Vice Chairman BoD & Managing Director, MetLife Register Now Greek Investment June 11-12, 2014 Forum The Athens Exchange and the AEGEAN AIRLINES American-Hellenic Chamber of Commerce ALPHA BANK are pleased to invite you to this year’s ATTICA BANK Investment Forum: CORINTH PIPEWORKS ELLAKTOR Participants: GR for Growth EUROBANK EUROBANK PROPERTIES JUNE 11-12, 2014 FOLLI FOLLIE GROUP Harmonie Club, 4 East 60th St, GEK TERNA New York, NY 10022 GR. SARANTIS HELLENIC EXCHANGES The Forum will bring together HELLENIC PETROLEUM key government of cials and INTRALOT leading Greek and U.S. LAMDA DEVELOPMENT business leaders to explore Greece’s MARFIN INVESTMENT GROUP improving investment climate, METKA key privatization initiatives MOTOR OIL MYTILINEOS and investment opportunities. NATIONAL BANK of GREECE Institutional investors OPAP will also have the opportunity to meet PIRAEUS BANK with senior executives PLAISIO of Greece’s leading listed companies. TERNA ENERGY THRACE PLASTICS The Forum will take place on June 11. TITAN One-on-one investor meetings will take HELLENIC REPUBLIC ASSET place on June 11-12. DEVELOPMENT FUND Gold sponsors: Silver sponsors: Hellenic American -
BIOLOGY 639 SCIENCE ONLINE the Unexpected Brains Behind Blood Vessel Growth 641 THIS WEEK in SCIENCE 668 U.K
4 February 2005 Vol. 307 No. 5710 Pages 629–796 $10 07%.'+%#%+& 2416'+0(70%6+10 37#06+6#6+8' 51(69#4' #/2.+(+%#6+10 %'..$+1.1); %.10+0) /+%41#44#;5 #0#.;5+5 #0#.;5+5 2%4 51.76+105 Finish first with a superior species. 50% faster real-time results with FullVelocity™ QPCR Kits! Our FullVelocity™ master mixes use a novel enzyme species to deliver Superior Performance vs. Taq -Based Reagents FullVelocity™ Taq -Based real-time results faster than conventional reagents. With a simple change Reagent Kits Reagent Kits Enzyme species High-speed Thermus to the thermal profile on your existing real-time PCR system, the archaeal Fast time to results FullVelocity technology provides you high-speed amplification without Enzyme thermostability dUTP incorporation requiring any special equipment or re-optimization. SYBR® Green tolerance Price per reaction $$$ • Fast, economical • Efficient, specific and • Probe and SYBR® results sensitive Green chemistries Need More Information? Give Us A Call: Ask Us About These Great Products: Stratagene USA and Canada Stratagene Europe FullVelocity™ QPCR Master Mix* 600561 Order: (800) 424-5444 x3 Order: 00800-7000-7000 FullVelocity™ QRT-PCR Master Mix* 600562 Technical Services: (800) 894-1304 Technical Services: 00800-7400-7400 FullVelocity™ SYBR® Green QPCR Master Mix 600581 FullVelocity™ SYBR® Green QRT-PCR Master Mix 600582 Stratagene Japan K.K. *U.S. Patent Nos. 6,528,254, 6,548,250, and patents pending. Order: 03-5159-2060 Purchase of these products is accompanied by a license to use them in the Polymerase Chain Reaction (PCR) Technical Services: 03-5159-2070 process in conjunction with a thermal cycler whose use in the automated performance of the PCR process is YYYUVTCVCIGPGEQO covered by the up-front license fee, either by payment to Applied Biosystems or as purchased, i.e., an authorized thermal cycler. -
NEMS-Based Infrared Metamaterial Via Tuning Nanocantilevers Within Complementary Split Ring Resonators Qiugu Wang, Depeng Mao, Peng Liu, Thomas Koschny, Costas M
1 NEMS-based Infrared Metamaterial via Tuning Nanocantilevers within Complementary Split Ring Resonators Qiugu Wang, Depeng Mao, Peng Liu, Thomas Koschny, Costas M. Soukoulis, and Liang Dong Abstract— Dynamic control of the electromagnetic properties of metamaterials requires wide modulation bandwidth. Tunable metamaterials with large tunability and fast speed are thus highly desirable. Due to the small dimensions, subwavelength meta- atoms or resonant elements that constitute a metamaterial in the mid-to-near-infrared (IR) wavelength range are often not easy to be tuned at a high rate of several tens of megahertz (MHz). Here, we report on a nanoelectromechanical systems (NEMS)- based tunable IR metamaterial realized by unique embedding of nanocantilevers into complementary split ring resonators (c- SRRs) suspended over individual wells. The optical field confined in the air gap of the c-SRR is strongly influenced by electro- statically induced mechanical deflection of the nanocantilever, thus modulating the reflection spectrum of the metamaterial. With the easy-to-implement tunable meta-atom design, the IR metamaterial with 800 nm-long cantilevers provides an ultrahigh mechanical modulation frequency of 32.26 MHz for optical signal modulation at a wavelength of 2.1 µm and is rather easy to manufacture and operate. We envision a compact, efficient, and high-speed electro-optic modulation platform in the IR region using this NEMS tunable metamaterial technology. Fig. 1. Schematic of the NEMS-enabled tunable metamaterial operating in the near-to-mid-IR wavelength region. Index Terms— NEMS, metamaterial, nanocantilever, electro- optic modulation. the complementary-metal-oxide-semiconductor (CMOS) fabri- cation process to enable flexible control with integrated circuits I. -
Negative-Index Materials: New Frontiers in Optics**
REVIEW DOI: 10.1002/adma.200600106 Negative-Index Materials: New Frontiers in Optics** By Costas M. Soukoulis,* Maria Kafesaki, and Eleftherios N. Economou A lot of recent interest has been focused on a new class of materials, the so-called left-handed materials (LHMs) or negative-index materials, which exhibit highly unusual electromagnetic properties and hold prom- ise for new device applications. These materials do not exist in nature and can only be fabricated artificially; for this reason, they are called meta- materials. Their unique properties are not determined by the fundamental physical properties of their constituents, but rather by the shape and distribution of the specific patterns included in them. Metamaterials can be designed to exhibit both electric and magnetic resonances that can be separately tuned to occur in frequency bands from megahertz to terahertz frequencies, and hope- fully to the visible region of the electromagnetic spectrum. This article presents a short history of the field, describes the underlying physics, and reviews the experimental and theoretical status of the field at present. Many interesting questions on how to fabricate more isotropic LHMs, on how to push the operational frequency to optical wavelengths, how to reduce the losses, and how to incorporate active or nonlinear materials in LHMs remain to be explored further. – 1. Introduction [*] Prof. C. M. Soukoulis Department of Physics and Ames Laboratory Iowa State University 1.1. History of Negative-Index Materials (or Left-Handed Ames, IA 50011(USA) E-mail: [email protected] Materials) Prof. C. M. Soukoulis, Dr. M. Kafesaki Foundation for Research and Technology, Hellas (FORTH) Electromagnetic metamaterials are artificially structured Institute of Electronic Structure and Laser (IESL) media with unique and distinct properties that are not ob- P.O. -
Bending the Laws of Optics with Metamaterials: an Interview With
National Science Review INTERVIEW 5: 200–202, 2018 doi: 10.1093/nsr/nwx118 Advance access publication 20 September 2017 Special Topic: Metamaterials Bending the laws of optics with metamaterials: an interview with John Pendry By Philip Ball Downloaded from https://academic.oup.com/nsr/article/5/2/200/4209243 by guest on 23 September 2021 Metamaterials show us that nature’s laws might not always be as fixed as they seem to be. One of the laws of optics, for example, statesthat a light ray passing from one transparent medium to another—air to water or glass, say—is bent at the interface by an amount that depends on the so-called refractive indices of the two media. And all transparent materials have a refractive index greater thanthatofa vacuum (or, roughly speaking, of air), which is set equal to 1. Or do they? In the 1960s, the Russian physicist Victor Veselago explained what would be needed, in theory, for a material to have a refractive index that is not only less than 1 but in fact negative, so that itbends light the ‘wrong way’. Veselago’s idea was all but forgotten until it was unearthed in the late 1990s by electrical engineer David Smith. He was wondering ifit might be possible to make a ‘scaled-up’ version of such a material, built from ‘artificial atoms’ and later called a metamaterial, which could show this effect at longer wavelengths than those of light, in the microwave part of the spectrum. By happy coincidence, physicist SirJohn Pendry of Imperial College London, UK, had already come up with a prescription for making a similar structure from loops of wire.