scholarly journals Unique reflection from birefringent uncoated and gold-coated InP nanowire crystal arrays

2021 ◽  
Author(s):  
Chia-Wei Tu ◽  
Masoud Kaveh ◽  
Martin Fränzl ◽  
Qian Gao ◽  
Hoe Tan ◽  
...  
Keyword(s):  
2010 ◽  
Vol 49 (4) ◽  
pp. 047201 ◽  
Author(s):  
Susumu Edo ◽  
Kento Okoshi ◽  
Sungmin Kang ◽  
Masatoshi Tokita ◽  
Junji Watanabe

Author(s):  
Takeo Tomiyama ◽  
Seiji Tai ◽  
Mitsuo Katayose ◽  
Masanobu Habiroa ◽  
Nobuyuki Hayashia
Keyword(s):  

2021 ◽  
Vol 238 ◽  
pp. 06002
Author(s):  
Ioannis Kousis ◽  
Claudia Fabiani ◽  
Anna Laura Pisello

Climate change intensifies the Urban Heat Islands (UHI) in hundreds of cities around the globe. Even though tests on traditional cool materials have shown promising results in terms of UHI mitigation, novel advanced solutions are deemed necessary for strategically counteracting UHI. Unlike traditional materials, phosphorescent materials can not only reflect incident shortwave radiation but also reemit it back, i.e. the phenomenon of phosphorescence. Even though this unique reflection-reemission mechanism known as effective solar reflectance (ESR), has been widely tested for sustainable lightning applications, its cooling potential has been surprisingly overlooked. Here, we examine, in-lab, and numerically, the thermo-optical properties of several phosphorescent coatings of different colours and we evaluate their effective cooling potential. Results reveal that the phosphorescence mechanism could be effectively optimized for obtaining phosphorescent-based coatings with an improved optical performance and hence substantially mitigate surface overheating in the built environment.


1999 ◽  
Vol 54 (8) ◽  
pp. 1033-1038 ◽  
Author(s):  
Elizaveta A. Bundya ◽  
Vladimir M. Amirkhanov ◽  
Vladimir A. Ovchynnikov ◽  
Victor A. Trush ◽  
Konstantin V. Domasevitch ◽  
...  

The coordination compounds of general formula [M{X}2(2-propanol)]2 (M = Co(II) (1), Ni(II) (2); {X} = Cl3CC(O)NP(O)(OCH3)2) have been prepared and characterized by means of IR, UV-VIS spectroscopy and X-ray analysis. The compounds are isomorphous according to X-ray powder diffraction studies. Crystal data for 1: triclinic, P1̄, with a = 9.510(2), b = 12.053(2), c = 23.594(5) Å ,a = 84.74(3), b = 86.47(3), g = 75.45(3)°, Z = 2, V = 2604.7(9) Å3, R1 = 0.067, wR2 = 0.143 for 6299 unique reflection used). The complex adopts a dimeric centrosymmetric molecular array with Co-O-Co bridges formed via the oxygen atoms of phosphoryl groups. This structure is stabilized by intradimeric hydrogen bonds of the type P = O---H with the coordinated 2-propanol. The metal atoms are coordinated in slightly distorted octahedra (Co-O 2.050(5)-2.140(5) Å). Unlike the β-diketonate compounds of similar structure, the dimeric complexes are stable towards donor species and in 2-propanol solution.


1977 ◽  
Vol 10 (6) ◽  
pp. 495-496 ◽  
Author(s):  
K. D. Rouse ◽  
R. Sayers ◽  
M. J. Cooper

2008 ◽  
Vol 42 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Kay Diederichs ◽  
Michael Junk

In a macromolecular X-ray experiment, many sets of intensity measurements are collected, with each measurement corresponding to the intensity of a unique reflection at a different X-ray dose. The computational correction of radiation damage, which occurs as a function of dose during the experiment, is a concept suggesting the approximation of each set of measured intensities with a smooth function. The value of the approximating function at a user-defined point common to all unique reflections is then used as an interpolated snapshot of the true intensities at this specific dose. It is shown here that, under realistic assumptions, interpolation with a linear function has the smallest amount of error at or near two well defined points in the dose interval. This result is a special case from a mathematical analysis of polynomial approximations which proves that the points of minimum error in the approximation of a polynomial of ordernby a polynomial of ordern − 1 are independent of the function values. Conditions are formulated under which better intensities are obtained from linear interpolation than from the usual averaging of observations.


2007 ◽  
Vol 16 (04) ◽  
pp. 533-549 ◽  
Author(s):  
A. DIAZ ◽  
J. H. PARK ◽  
I. C. KHOO

The dispersion of nanoparticles in a nematic liquid crystal host medium provides an efficient way of designing tunable optical metamaterials that respond from the visible to the Terahertz and microwave regime. As studied in this article, these systems exhibit much larger birefringence than the nematic host and possess sub-unity, zero, and even negative refractive indices with unique reflection and transmission properties. These tunable optical metamaterials will enable a wide range of application possibilities in next-generation reflective, transmissive, modulation and switching elements and devices.


Author(s):  
Kornieva S.Ye.

The article is devoted to the problem of extralingual information of the Ukrainian, English and French proverbs with a component “mind”. The result of the analysis is that the semantics of proverbs in three languages are determined and adjusting judgements which have the connection with the attitude of Ukrainians, Englishmen and Frenchmen toward intelligence are formed. The relevance of the topic is due to the fact that a proverb is a unique reflection of people’s beliefs, persuasions, system of values, culture, everyday activity and way of thinking. Modern linguists in their works pay attention to such features of proverbs, as: structuring, rhythm, semantics which is represented in both, direct and indirect meanings of the proverbs. For the research there are taken 106 Ukrainian proverbs with a lexeme «розум», 12 English proverbs with a lexeme “mind” and 12 French proverbs with a lexeme “esprit”. Analysis of the semantic meanings of proverbs and their comparison in three languages contribute to the selection of judgements that are common for: all three nations; Ukrainians and Englishmen; Ukrainians and Frenchmen; Englishmen and Frenchmen. It should be noticed, that judgements which are appropriate for each separate language are formed. The content of judgements shows that Ukrainians, Englishmen and Frenchmen, have similarities in some judgements, among which is the conviction that a clever man considers feelings. Among other peculiarities of Ukrainians such persuasion as the “mind” is God’s gift is distinguished. Comparing mind and wealth Ukrainians express hesitation concerning the necessity to clarify the interdependence of mind and incomes. The consequence of such hesitation is the existence of proverbs which have the contradictory meanings. From the one side, the incomes support the acquisition of knowledge, from the other side, the incomes prevent the person to become cleverer. As for the Englishmen, they are more confident in the idea that gaining incomes depends directly on person’s mind and knowledge. In the Ukrainian proverbs the other contradictory judgements take place. They have the connection with the interdependence of happiness and mind as well as mind and old age. Moreover, the majority of judgements about the mind in three languages is positive. This fact confirms the importance of developing of mind for representatives of three nations. Key words: paremiological unit, semantic meaning, adjusting judgement, mental abilities, culture, system of persuasions. Статтю присвячено дослідженню лінгвокультурної специфіки українських, англійських і французьких прислів’їв із компонентом «розум». У результаті аналізу визначено семантичне наповнення прислів’їв трьох мов і сформульовано настановні судження щодо ставлення українців, англійців і французів до розумової діяльності. Актуальність дослідження зумовлено тим, що прислів’я є унікальним відбиттям вірувань, переконань, системи цінностей, звичаїв, культури, повсякденної діяльності й способу мислення кожного народу. Сучасні лінгвісти у своїх працях звертають увагу на такі особливості прислів’їв, як структурованість, ритмічність, семантична наповненість, яка відбивається як у прямих, так і в переносних значеннях прислів’їв. Матеріалом дослідження для статті послугували 106 українських прислів’їв із лексемою «розум», 12 англійських – із лексемою “mind” і 12 французьких – із лексемою “esprit”. Аналіз змістового наповнення прислів’їв та їхнє порівняння в трьох мовах сприяло виокремленню суджень, що є спільними для: всіх трьох народів; українців і англійців; українців і французів; англійців і французів. Слід відзначити, що були також сформульовані судження, які притаманні окремо кожному народу. Зміст суджень показав, що українці, англійці й французи мають схожість у деяких судженнях, а саме стосовно переконаності в тому, що розумна людина зважає на почуття. Серед інших особливостей виокремлено таке переконання українців, за яким «розум» є подарунком від Бога, однак розвиток розуму залежить від людини. Порівнюючи розум із багатством, українці дещо сумніваються в необхідності вказувати на взаємозалежність розуму й статків, наслідком чого є існування прислів’їв, зміст яких суперечить один одному. З одного боку, саме статки сприяють набуттю знань, з іншого, – статки заважають людині ставати розумнішою. Щодо англійців, то вони значно впевненіше вказують на те, що здобуття матеріальних статків безпосередньо залежить від розуму й знань людини. В українських прислів’ях є й інші суперечливі судження, які стосуються взаємозалежності щастя та розуму, а також розуму й старості. Слід відзначити, що переважна більшість суджень про розумову діяльність у трьох мовах позитивна, що підтверджує важливість набуття цієї характеристики представниками всіх трьох народів.Ключові слова: пареміологічна одиниця, семантичний зміст, настановне судження, розумові здібності, культура народу, система переконань.


Being published as a celebration of the 60th anniversary of John von Neumann’s “Theory of Self-Reproducing Automata,” this handbook attempts to provide a unique reflection on the nature of computational economics and finance (CEF) in light of natural computationalism. We restructure CEF by including both nature-inspired computing and natural computing. This new framework allows us to have a view of CEF much broader than just the conventional algorithmic consideration. The book begins with a historical review of computational economics (CE), tracing its history far back to the era of analog computing. In these early days, advancements were mainly made using the idea of natural computing, and the subjects pursued by CE were the computing system as a whole, not just numerical computing. The handbook then is organized by distinguishing computing from computing systems. Six chapters (Chapters 2 to 7) are devoted to the former. They together present a review on the recent progresses in CE, as illustrated by the computation of rational expectations, general equilibrium, risk, and volatility. The subsequent 16 chapters are devoted to the computing-systemic view of CE, including natural-inspired computing (Chapters 8 to 12) and network, agent-based computing and neural computing (Chapters 13 to 23). In addition to providing alternative approaches to forecasting, investment strategies and risk management, etc., they enable us to have a 'natural' or more realistic description of the economy, starting from its decision makers; hence, market-design or policy-design issues involving different levels of the economy, be microscopic, mesoscopic and macroscopic, can be simultaneously addressed and coherently integrated. The handbook concludes with a chapter on what we may hope from CE by providing an in-depth review on the epistemological aspects of computation.


2020 ◽  
Vol 115 ◽  
pp. 247-268
Author(s):  
Nicoletta Antognelli Michel

This paper offers a new interpretation of the motifs preserved on the fragmentary Late Minoan (LM) I seal impression from Knossos CMS II8, 321, proposing a reconstruction of the original scene as two couchant overlapping griffins without wings among papyrus plants. If correct, the combination of all these elements is quite exceptional, since this scene would provide a unique reflection in glyptic art of the famous Throne Room decoration of Knossos, with its imposing wingless griffins immersed in a lush landscape of papyrus-reeds. Although a well-known ivory plaque from Mycenae displays a similar composition with a single, ‘classical’, winged griffin, no seal image seems to show also the wingless beast and the overlapping pose of two couchant griffins. The present investigation explores several parallels not only for this rare, yet well-attested, compositional scheme in Aegean art, but also for the figure of the wingless griffin. Both will be found in the Pylian palace decorative programme, which offers further griffins without wings – even in glyptic art – a meaningful parallel, since the interconnections between the Palace of Nestor and the Palace of Minos provide some of the most intriguing material in the study of Aegean imagery.


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