Structural Evolution of Boron Clusters on Ag(111) Surface‐from Atomic Chains to Triangular Sheet with Hexagonal Holes

ChemPhysChem ◽  
2021 ◽  
Author(s):  
Xiuyun Zhang ◽  
Yi Sun ◽  
Jingyi Tang ◽  
Tianxia Guo ◽  
Min Zhou ◽  
...  
Keyword(s):  
Structural Evolution ◽  
Boron Clusters ◽  
Atomic Chains

Competition between tubular, planar and cage geometries: a complete picture of structural evolution of Bn (n = 31–50) clusters

2020 ◽  
Vol 22 (23) ◽  
pp. 12959-12966 ◽  
Author(s):  
Xue Wu ◽  
Linwei Sai ◽  
Si Zhou ◽  
Panwang Zhou ◽  
Maodu Chen ◽  
...  
Keyword(s):  
Theoretical Prediction ◽  
Experimental Finding ◽  
Structural Evolution ◽  
Research Interest ◽  
Complete Picture ◽  
Boron Clusters ◽  
Intensive Research ◽  
Size Dependent

Stimulated by the early theoretical prediction of B80 fullerene and the experimental finding of the B40 cage, the structures of medium-sized boron clusters have attracted intensive research interest during the last decade, but a complete picture of their size-dependent structural evolution remains a puzzle.

Structural and electronic properties of MB22− (M = Na, K) clusters: tubular boron versus quasi-planar boron forms

2019 ◽  
Vol 43 (17) ◽  
pp. 6507-6512 ◽  
Author(s):  
Wei-yan Liang ◽  
Anita Das ◽  
Xue Dong ◽  
Meng-hui Wang ◽  
Zhong-hua Cui
Keyword(s):  
Electronic Properties ◽  
Boron Atom ◽  
Three Dimensional ◽  
Chemical Properties ◽  
Structural Evolution ◽  
Boron Clusters ◽  
Structural And Electronic Properties ◽  
Electron Deficiency

Electron deficiency of boron atom has led to the abundant chemical properties of boron clusters, such as intriguing structures, unique multi-center bonding and electronic properties, as well as the structural evolution from planar to three-dimensional forms.

Structural evolution and electronic properties of medium-sized boron clusters doped with scandium

2019 ◽  
Vol 31 (48) ◽  
pp. 485302 ◽  
Author(s):  
Siyu Jin ◽  
Bole Chen ◽  
Xiaoyu Kuang ◽  
Cheng Lu ◽  
Gennady L Gutsev
Keyword(s):  
Electronic Properties ◽  
Structural Evolution ◽  
Boron Clusters

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

Formation and properties of metallic atomic chains and wires

2020 ◽  
Author(s):  
Aleksei G. Syromyatnikov ◽  
Sergei V. Kolesnikov ◽  
Aleksandr M. Saletsky ◽  
Andrey L. Klavsyuk
Keyword(s):  
Atomic Chains

Electrodeposition of Strained-Layer Superlattices

1996 ◽  
Vol 451 ◽  
Author(s):  
T. P. Moffat
Keyword(s):  
Charge Transfer ◽  
Mass Transport ◽  
Structural Evolution ◽  
Iron Group ◽  
Morphological Instability ◽  
Group Metal ◽  
Iron Group Metal ◽  
Transport Control ◽  
Strained Layer Superlattices ◽  
Interfacial Charge

ABSTRACTA variety of Cu/(Ni, Co) multilayers have been grown on Cu single crystals by pulse plating from an alloy electroplating bath. Copper is deposited under mass transport control while the iron group metal is deposited under interfacial charge transfer control. The structural evolution of these films is influenced by the morphological instability of the mass transport limited copper deposition reaction and the development of growth twins during iron-group metal deposition. Specular films have been obtained for growth on Cu(100) while rough, defective films were typically obtained for growth on Cu(111) and Cu(110).

Pattern Formation in Thin Polymer Films: A New Morphology

2000 ◽  
Vol 629 ◽  
Author(s):  
Jean-Loup Masson ◽  
Peter F. Green
Keyword(s):  
Growth Rate ◽  
Pattern Formation ◽  
Early Stage ◽  
Structural Evolution ◽  
Distinct Form ◽  
Thin Polymer Films ◽  
Intermediate Morphology ◽  
Thin Polymer ◽  
Nonwetting Liquid ◽  
Cylindrical Holes

ABSTRACTResearchers have shown that thin, nonwetting, liquid homopolymer films dewet substrates, forming patterns that reflect fluctuations in the local film thickness. These patterns have been shown to be either discrete cylindrical holes or bicontinuous “spinodal-like” patterns. In this paper we show the existence of a new morphology. During the early stage of dewetting, discrete highly asymmetric holes appear spontaneously throughout the film. The nucleation rate of these holes is faster than their growth rate. The morphology of the late stage of evolution, after 18 days, is characterized by a bicontinuous pattern, distinct form conventional spinodal dewetting patterns. This morphology has been observed for a range of film thicknesses between 7.5 and 21nm. The structural evolution of this intermediate morphology is discussed.

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