skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In situ study of aggregate topology during growth of pyrolytic silica

Abstract

Ramified aggregates are formed in many kinetically-limited growth processes such as in sooting flames. The structures are disordered and present a challenge to quantification. The topology of such nanomaterials is important in understanding their formation and properties. Recently, a method has been developed for the quantification of branching in aggregates using small-angle scattering. The method allows for determination of the average number of branches, branch length, short circuit path through an aggregate, aggregate total mass, aggregate polydispersity, primary particle coordination number, Sauter mean diameter, primary particle polydispersity, particle size distribution, and surface to volume ratio. Here in this report the new topological method is applied to in situ measurements previously published from a flame aerosol as a function of height above the burner. The topological evolution of primary and fractal structures is observed. Lastly, this facilitates the understanding of growth dynamics and the structural rearrangements that occur during flame synthesis.

Authors:
 [1];  [2];  [2];  [3];  [4]
  1. Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS)
  2. Univ. of Cincinnati, OH (United States). Materials Biomedical, Chemical, and Environmental Engineering
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  4. Novartis Pharma AG, Postfach (Switzerland)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); U.S. Agency for International Development
OSTI Identifier:
1429901
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Aerosol Science
Additional Journal Information:
Journal Volume: 118; Journal Issue: C; Journal ID: ISSN 0021-8502
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Rai, Durgesh K., Beaucage, Gregory, Vogtt, Karsten, Ilavsky, Jan, and Kammler, Hendrik K. In situ study of aggregate topology during growth of pyrolytic silica. United States: N. p., 2018. Web. doi:10.1016/j.jaerosci.2018.01.006.
Rai, Durgesh K., Beaucage, Gregory, Vogtt, Karsten, Ilavsky, Jan, & Kammler, Hendrik K. In situ study of aggregate topology during growth of pyrolytic silica. United States. doi:10.1016/j.jaerosci.2018.01.006.
Rai, Durgesh K., Beaucage, Gregory, Vogtt, Karsten, Ilavsky, Jan, and Kammler, Hendrik K. Wed . "In situ study of aggregate topology during growth of pyrolytic silica". United States. doi:10.1016/j.jaerosci.2018.01.006. https://www.osti.gov/servlets/purl/1429901.
@article{osti_1429901,
title = {In situ study of aggregate topology during growth of pyrolytic silica},
author = {Rai, Durgesh K. and Beaucage, Gregory and Vogtt, Karsten and Ilavsky, Jan and Kammler, Hendrik K.},
abstractNote = {Ramified aggregates are formed in many kinetically-limited growth processes such as in sooting flames. The structures are disordered and present a challenge to quantification. The topology of such nanomaterials is important in understanding their formation and properties. Recently, a method has been developed for the quantification of branching in aggregates using small-angle scattering. The method allows for determination of the average number of branches, branch length, short circuit path through an aggregate, aggregate total mass, aggregate polydispersity, primary particle coordination number, Sauter mean diameter, primary particle polydispersity, particle size distribution, and surface to volume ratio. Here in this report the new topological method is applied to in situ measurements previously published from a flame aerosol as a function of height above the burner. The topological evolution of primary and fractal structures is observed. Lastly, this facilitates the understanding of growth dynamics and the structural rearrangements that occur during flame synthesis.},
doi = {10.1016/j.jaerosci.2018.01.006},
journal = {Journal of Aerosol Science},
number = C,
volume = 118,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: