scholarly journals Chirality Affecting Reaction Dynamics of HgS Nanostructures Simultaneously Visualized in Real and Reciprocal Space

ACS Nano ◽  
2021 ◽  
Author(s):  
Zetan Cao ◽  
Jia He ◽  
Zhiwen Liu ◽  
Haoran Zhang ◽  
Bin Chen
Keyword(s):  
Reaction Dynamics ◽  
Reciprocal Space

Visualizing the Redox Reaction Dynamics of Perovskite Nanocrystals in Real and Reciprocal Space

2020 ◽  
Vol 11 (7) ◽  
pp. 2550-2558
Author(s):  
Jia He ◽  
Zhiwen Liu ◽  
Zetan Cao ◽  
Haoran Zhang ◽  
Yenan Meng ◽  
...  
Keyword(s):  
Redox Reaction ◽  
Reaction Dynamics ◽  
Reciprocal Space ◽  
Perovskite Nanocrystals

scholarly journals Chirality Affecting Reaction Dynamics of HgS Nanostructures Simultaneously Visualized in Real and Reciprocal Space

2021 ◽  
Author(s):  
Zetan Cao ◽  
Jia He ◽  
Zhiwen Liu ◽  
Haoran Zhang ◽  
Bin Chen
Keyword(s):  
Electron Beam ◽  
Asymmetric Synthesis ◽  
Reaction Dynamics ◽  
Reciprocal Space ◽  
In Situ Observation ◽  
Size Dependent ◽  
Electron Beam Excitation ◽  
Evaporation Dynamics ◽  
Induced Changes

Abstract Chirality involved reactions enable to probe features in the fields of asymmetric synthesis and catalysis, which allow to gain insight into the fundamental mechanisms of topochemically controlled reactions. However, in situ observation of the chirality-associated reaction dynamics with simultaneous structural determination of new features has been lacking. Here, we report the direct visualization of the electron-beam-stimulated reaction dynamics of HgS nanostructures with chiral and achiral morphologies simultaneously in both real and reciprocal space. Under the electron-beam excitation of HgS nanostructures, the formation and evaporation dynamics of Hg nanodroplets were vividly pictured while the reciprocal space imaging revealed the structural transformation from monocrystalline to polycrystalline. Such induced changes were size-dependent, which were slowed down when involving the chirality in the nanostructures. The finding offers a fundamental understanding of topochemically controlled reaction mechanisms and holds promise of tuning asymmetric synthesis for catalysis related applications.

Calculation of structure images of crystalline defects

1978 ◽  
Vol 36 (1) ◽  
pp. 282-283
Author(s):  
M.A. O'Keefe ◽  
Sumio Iijima
Keyword(s):  
Diffuse Scattering ◽  
Computing Time ◽  
Continuous Distribution ◽  
Sampling Interval ◽  
Reciprocal Space ◽  
Objective Lens ◽  
Lattice Images ◽  
Slice Method ◽  
Space Cell ◽  
Beam Lattice

We have extended the multi-slice method of computating many-beam lattice images of perfect crystals to calculations for imperfect crystals using the artificial superlattice approach. Electron waves scattered from faulted regions of crystals are distributed continuously in reciprocal space, and all these waves interact dynamically with each other to give diffuse scattering patterns.In the computation, this continuous distribution can be sampled only at a finite number of regularly spaced points in reciprocal space, and thus finer sampling gives an improved approximation. The larger cell also allows us to defocus the objective lens further before adjacent defect images overlap, producing spurious computational Fourier images. However, smaller cells allow us to sample the direct space cell more finely; since the two-dimensional arrays in our program are limited to 128X128 and the sampling interval shoud be less than 1/2Å (and preferably only 1/4Å), superlattice sizes are limited to 40 to 60Å. Apart from finding a compromis superlattice cell size, computing time must be conserved.

Time-resolved X-ray reciprocal space mapping of the crystal under external electric field

2018 ◽  
Vol 189 (02) ◽  
pp. 187-194 ◽  
Author(s):  
Nikita V. Marchenkov ◽  
Anton G. Kulikov ◽  
Ivan I. Atknin ◽  
Arsen A. Petrenko ◽  
Alexander E. Blagov ◽  
...  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Space Mapping ◽  
Reciprocal Space ◽  
Reciprocal Space Mapping ◽  
Time Resolved ◽  
X Ray

Ab initio structure determination of cytochrome c6 by combined reciprocal space-real space approach

2003 ◽  
Vol 218 (1) ◽  
Author(s):  
K. Chowdhury ◽  
S. Ghosh ◽  
M. Mukherjee
Keyword(s):  
Cytochrome C ◽  
Ab Initio ◽  
Structure Determination ◽  
Direct Method ◽  
Real Space ◽  
Reciprocal Space ◽  
Cytochrome C6 ◽  
Ab Initio Structure ◽  
Space Approach

AbstractThe direct method program SAYTAN has been applied successfully to redetermine the structure of cytochrome c

Debye equation versus Whole Powder Pattern Modelling: Real versus reciprocal space modelling of nanomaterials

2009 ◽  
Vol 2009 (30) ◽  
pp. 85-90 ◽  
Author(s):  
K. Beyerlein ◽  
A. Cervellino ◽  
M. Leoni ◽  
R. L. Snyder ◽  
P. Scardi
Keyword(s):  
Reciprocal Space ◽  
Powder Pattern ◽  
Equation Versus ◽  
Debye Equation

Reaction Dynamics — Recent Advances

1991 ◽  
Vol 174 (Part_2) ◽  
pp. 225-225
Author(s):  
Wolfgang Schirmer
Keyword(s):  
Reaction Dynamics ◽  
Recent Advances
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