Scattering Functions of Yolk-Shell Particles

Journal Article · Tue Jan 01 00:00:00 EST 2013 · Journal of Applied Crystallography

DOI:https://doi.org/10.1107/S0021889813022917· OSTI ID:1104800

Li, Xin ^[1]; Liu, Kao-Hsiang ^[2]; Wu, Bin ^[1]; Sanchez-Diaz, Luis E ^[1]; Smith, Gregory Scott ^[1]; Chen, Wei-Ren ^[1]

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1. ORNL
2. National Taiwan University

The single-particle small-angle scattering properties of the yolk-shell particle, a new type of core-shell particle with a mobile core within the hosting shell, are systematically investigated. The Debye spatial autocorrelation function, pair distance distribution function and intraparticle structure factor (form factor) are calculated and compared to the corresponding scattering functions of reference systems of hard sphere and concentric core-shell particles with identical sizes. Based on our theoretical calculations, we find that the broken centrosymmetry, originating from the mobility of the trapped yolk, results in an imaginary scattering amplitude. As a result, it contributes an additional destructive interference term which smears certain features present in the scattering functions of the reference systems. Based on our theoretical models, we present the prospect of jointly using small angle neutron and x-ray scattering techniques to quantitatively determine the structural characteristics of yolk-shell particles.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1104800
• Journal Information: Journal of Applied Crystallography, Vol. 46, Issue 6; ISSN 0021-8898
• Publisher: International Union of Crystallography
• Country of Publication: United States
• Language: English

Related Subjects

Yolk-Shell Particle
Small Angle Scattering
Scattering Functions