Results 31 to 40 of about 155,593 (300)

Comparative Study of Mineralogical Characteristics of Natural and Synthetic Amethyst and Smoky Quartz

Crystals, 2022
With the development of synthetic gem technology, a large number of synthetic rock crystals, such as natural and synthetic amethyst and natural and synthetic smoky quartz, have emerged in the market.
Kaichao Liu, Ying Guo
doaj   +1 more source

Thermal Expansion of Fused Quartz Powder Compacts

Journal of the Ceramic Society of Japan, 1997
The fused quartz is one of the most typical materials of low thermal expansion. However, it was found that compacts prepared by isostatic compression of ground powder of fused quartz showed an anomalously high thermal expansion of 7×10-6/°C, i.e., about 10 times of that of the normal fused quartz. The density of the glass powder increased with grinding
Kenya HAMANO, Makoto KOTOH, Keisuke ICHIBA, Hiroshi YAMAMURA   +3 more
openaire   +2 more sources

Mechanical Behavior of Reactive Powder Concrete Made From Local Material Subjected to Axial Pressure

Frontiers in Materials, 2021
In order to investigate the influence of various parameters on the compressive strength and fluidity of reactive powder concrete (RPC) made from local materials, 22 groups of RPC cubic specimens and 3 groups of RPC prism specimens were designed, and the ...
Jing Ji, Jing Ji, Wei Kang, Liangqin Jiang, Yunhao Li, Hongguo Ren, Sixue Hao, Lingjie He, Yubo Lin, Chenyu Yu   +9 more
doaj   +1 more source

Reversible melting and equilibrium phase formation of (Bi,Pb)2Sr2Ca2Cu3O10+d

, 2002
The decomposition and the reformation of the (Bi,Pb)2Sr2Ca2Cu3O10+d (?Bi,Pb(2223)?) phase have been investigated in-situ by means of High-Temperature Neutron Diffraction, both in sintered bulk samples and in Ag-sheathed monofilamentary tapes.
E Giannini, Fischer P, Fischer P, Frello T, Giannini E, Gottschalck-Andersen L, Gottschalck-Andersen L, Grasso G, Grivel J-C, Hulbert S F, I Savysyuk, Liang B, Lomello-Tafin M, Luo J S, McCarron E M III, Morgan P E, Murayama N, Noudem J G, P Toulemonde, R Fl kiger, R Passerini, Rao C N R, Reardon B J, Roth R S, Sakthivel A, Sebaoun A, V Garnier, Wang W G, Wong-Ng W   +28 more
core   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

The influence of quartz powder addition on the production of paving blocks

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
The research investigates how quartz powder addition affects the physical and mechanical properties of concrete paving blocks made from cement, fine aggregate, water, and coarse aggregate mixtures.
Aryanto, Erwin SUTANDAR, Joewono PRASETIJO   +2 more
doaj   +1 more source

Synthesis of superconducting pyrochlore RbOs2O6

, 2004
RbOs2O6, the third superconducting pyrochlore oxide (known so far), has been synthesized by encapsulation and by high pressure techniques. Suitable post chemical treatment of the as-prepared sample allowed us to eliminate the impurity phases.
B Batlogg, Brühwiler M Kazakov S M Zhigadlo N D Karpinski J Batlogg B, Hiroi Z Yonezawa S Muraoka Y, J Karpinski, M Brühwiler, N D Zhigadlo, S M Kazakov, Sakai H, Yonezawa S, Yonezawa S, Yonezawa S Muraoka Y Hiroi Z   +10 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

The Influence of Quartz Powder on the Mechanical–Thermal–Chemical–Durability Properties of Cement-Based Materials

Applied Sciences
Using industrial by-products to replace cement is an important way to reduce carbon emissions in the cement industry. The purpose of this article is to understand the effect of quartz powder on the properties of cement-based materials.
Gui-Yu Zhang, Seokhoon Oh, Chunhua Lu, Yi Han, Run-Sheng Lin, Xiao-Yong Wang   +5 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source