Results 11 to 20 of about 399,544 (300)
Nature, 2020 Self-assembling colloidal particles in the cubic diamond crystal structure could potentially be used to make materials with a photonic bandgap1-3. Such materials are beneficial because they suppress spontaneous emission of light1 and are valued for their applications as optical waveguides, filters and laser resonators4, for improving light-harvesting ...
Mingxin He +6 more
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Nature Communications, 2021 AbstractFor the first time, lasing at NV−centers in an optically pumped diamond sample is achieved. A nanosecond train of 150-ps 532-nm laser pulses was used to pump the sample. The lasing pulses have central wavelength at 720 nm with a spectrum width of 20 nm, 1-ns duration and total energy around 10 nJ.
Alexander Savvin +8 more
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Illicit trafficking of diamonds: New frontiers
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023 As it is often said, diamonds are forever. Lives, however, are not. At the hands of rebels, dictators, and terrorists, diamonds have crystallized into a source of financing for conflict and civil wars, which not only caused the deaths of more than two ...
Sebastiano Ettore Spoto
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Data & Knowledge Engineering, 2013 29 ...
Webb, Hazel, Lemire, Daniel, Kaser, Owen
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Thermal Damage in Diamonds: the Protective Effect of Titanium Coating [PDF]
Materials Research, 2015 Many of the applications of diamonds expose them to high temperatures and atmospheres containing oxygen. Under these circumstances two important phenomena responsible for the thermal damage of diamonds are: oxidation and graphitization.
Marcio Carneiro Garcia Rosa +2 more
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Witwatersrand composite paleoplacers
Известия высших учебных заведений: Геология и разведка, 2021 Background. The Witwatersrand gold province located in South Africa is the richest in the world. The Witwatersrand deposits are composite, where osmirids and diamonds are mined along with gold, silver and uranium.
V. A. Stepanov
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Selection of collector composition and temperature conditions for diamond foam separation [PDF]
Journal of Mining and Metallurgy. Section A: Mining, 2022 Quantitative and qualitative regularities of a collector low and high molecular weight fractions distribution between solid and liquid phases in foam separation process were determined with the use of extraction-spectrophotometrical technique.
Morozov V.V. +4 more
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Beilstein Journal of Nanotechnology, 2012 We demonstrate the coupling of single color centers in diamond to plasmonic and dielectric photonic structures to realize novel nanophotonic devices. Nanometer spatial control in the creation of single color centers in diamond is achieved by implantation of nitrogen atoms through high-aspect-ratio channels in a mica mask.
Beha, Katja +25 more
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Yankuang ceshi, 2016 Natural diamonds commonly contain polymeric nitrogen and have complex growing textures, whereas synthetic diamonds do not contain nitrogen or do contain single nitrogen and have typical growing textures related to the synthetic process.
LAN Yan +7 more
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Criteries and prospects of diamonds of the Vitebsk granulite massif
Журнал Белорусского государственного университета: География, геология, 2021 The article describes the history of studying the diamond content of tectonic structures of the territory of Belarus. Based on the results of magnetometric, mineralogical, tectonic studies carried out by industrial geologists and scientists over the past
Victor S. Konishchev +1 more
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