skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Explore Research Products in the PAR
It may take a few hours for recently added research products to appear in PAR search results.


  • Home
  • Search Results
  • Page 1 of 1

Search for: All records

Creators/Authors contains: "Rezikyan, Aram"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. ; ; ; ; (, Microscopy and Microanalysis)
    Fluctuation Electron Microscopy (FEM) examines speckle in images and diffraction patterns that arises from constructive and destructive interferences between the waves scattered by atoms in the thin material. Strong coherence between the scattered waves is necessary if structural correlations between those atoms is to be detected [1]. High spatial coherence in the illumination is crucial. 
    more » « less
    Full Text Available 
  2. ; ; ; ; ; (, Microscopy and Microanalysis)
    Fluctuation Electron Microscopy (FEM) examines the scattering statistics from small volumes of thin amorphous materials in order to learn subtle details about any medium-range order (MRO) that may be present [1–4]. Both modeling and simulations show that FEM is extraordinarily sensitive to the presence of MRO, much more so than high-resolution diffraction and high-resolution imaging. The essence of FEM is to measure the 'speckliness' of diffraction (or image) data from small regions of the sample. 
    more » « less
    Full Text Available 
  3. ; ; ; ; ; ; ; (, Scientific Reports)
    null (Ed.)
    Abstract Nucleation is generally viewed as a structural fluctuation that passes a critical size to eventually become a stable emerging new phase. However, this concept leaves out many details, such as changes in cluster composition and competing pathways to the new phase. In this work, both experimental and computer modeling studies are used to understand the cluster composition and pathways. Monte Carlo and molecular dynamics approaches are used to analyze the thermodynamic and kinetic contributions to the nucleation landscape in barium silicate glasses. Experimental techniques examine the resulting polycrystals that form. Both the modeling and experimental data indicate that a silica rich core plays a dominant role in the nucleation process. 
    more » « less
    Full Text Available