Results 31 to 40 of about 712 (251)
Confins, 2012 The colored gemstones commoditychains, as most of natural resources exploited, have long consisted as hierarchical trades dominated by the main Western powers.
Aurélien Reys
doaj +1 more source
Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics
Advanced Materials, EarlyView.“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair +3 more
wiley +1 more source
American Scientist, 2012 The gemstones of ancient Egypt, broadly defined, include all rocks, minerals, and biogenic materials used for jewelry (beads, pendants, ring stones, and cloisonné inlays), amulets, seals, and other small decorative items (figurines, cosmetic vessels, and inlays in furniture and sculpture).
openaire +3 more sources
AIP Advances, 2023 In this paper, characterization and discrimination of some silicate gems (gemstones and low-gem quality varieties) from ancient Egyptian mines have been performed for the first time adopting molecular and elemental spectroscopic techniques.
Amal Abdelfattah Khedr +3 more
doaj +1 more source
Crystals, 2022 Gemstones usually contain inclusions as the natural hallmark of their formation. Studies on inclusions may contribute to our understanding of the gem and better adapt to the gems and jewelry industry.
Yujie Gao +5 more
doaj +1 more source
Deterministic Integration of Quantum Emitters and Optical Cavities in a Van Der Waals Crystal
Advanced Optical Materials, EarlyView.The work demonstrates fabrication of Circular Bragg Grating (CBG) cavities with embedded emitters in hBN. The cavities are fabricated around a pre‐characterised quantum emitter. The integrated platform enables light matter interaction and access to brighter emitters and spins in hBN.
James Liddle‐Wesolowski +8 more
wiley +1 more source
La filière brésilienne des pierres gemmes « de couleur »
Cahiers des Amériques Latines, 2014 Despite the widespread dispersion of coloured gemstone exploitation in Brazil, two states remain by far the most important: Minas Gerais and Rio Grande do Sul.
Aurélien Reys
doaj +1 more source
Engineering Exciton g‐Factors With Light in Type‐II Heterostructures
Advanced Optical Materials, EarlyView.All‐optical approaches have emerged as cutting‐edge alternatives for ultrafast, energy‐efficient, and spatially localized tuning and switching of material properties. In our work, we demonstrate how light intensity alone can be leveraged to engineer g‐factors from a single‐type of carrier in type‐II heterostructures through Coulomb‐induced wavefunction
G. M. Jacobsen +9 more
wiley +1 more source
Dynamics and Applications of Photon-Nanostructured Systems
Nanomaterials, 2020 In a speedy and complicated word, only a small number of book readers have the time to dig out the hidden “gemstones” between the text lines [...]
Evangelia Sarantopoulou
doaj +1 more source
Problems Faced by Online Gemstone Traders of NamakMandi market at Pakistani Airports
Journal of Business and Social Review in Emerging Economies, 2023 Purpose: This paper analyses the views and experiences of gemstone traders at the NamakMandi (NM) gemstone market. Methodology: The paper draws on the data from a stakeholder’s workshop held at Bacha Khan University Charsadda (Pakistan) and ten (10 ...
Syed Owais +2 more
doaj +1 more source