Ultra-high figure-of-merit dielectric metasurface

2021 ◽  
Author(s):  
Keshav Samrat Modi ◽  
Jasleen S. Kaur ◽  
Satya Pratap S. Singh ◽  
Umesh Kumar Tiwari ◽  
Ravindra Kumar Sinha
Keyword(s):  
Figure Of Merit ◽  
High Figure ◽  
Dielectric Metasurface

Bi 2 Te 3 based bulks with high figure of merit obtained from cut waste fragments of cooling crystal rods

2017 ◽  
Vol 201 ◽  
pp. 57-62 ◽  
Author(s):  
Qiusheng Xiang ◽  
Xi'an Fan ◽  
Xuewu Han ◽  
Chengcheng Zhang ◽  
Jie Hu ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
High Figure

Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit.

ChemInform ◽  
2004 ◽  
Vol 35 (17) ◽  
Author(s):  
Kuei Fang Hsu ◽  
Sim Loo ◽  
Fu Guo ◽  
Wei Chen ◽  
Jeffrey S. Dyck ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
High Figure

Ambiguities in powder pattern indexing: A ternary lattice metric singularity

2001 ◽  
Vol 16 (3) ◽  
pp. 144-148
Author(s):  
Alan D. Mighell
Keyword(s):  
Figure Of Merit ◽  
Volume Ratio ◽  
Powder Pattern ◽  
Unit Cells ◽  
High Figure ◽  
Practical Impact

A lattice metric singularity occurs when unit cells defining two (or more) lattices yield the identical set of unique calculated d-spacings. The existence of such singularities, therefore, has a practical impact on the indexing of powder patterns. Lattice metric singularities often involve lattices that are in a derivative relationship one to another. A variety of types of singularities are possible depending on the number of different lattices involved (i.e., binary, ternary, quaternary), on the nature of the derivative lattice relationship (i.e., subcell/supercell, composite), on the Bravais type of each of the lattices, and on the the volume ratio(s) of primitive cells defining the lattices. In the laboratory, an encounter with a singularity can lead one into a trap; viz., the investigator using an indexing program, or by other means, may determine only one of the lattices with a high figure of merit. When this happens, it is critical to recognize that there exists more than one indexing solution. In a previous work, a binary singularity was described involving a monoclinic and a rhombohedral lattice. In the present work, we describe a second type of singularity—a ternary singularity—in which the two of the three lattices are in a derivative composite relationship.

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