Prospect for characterizing interacting soft colloidal structures using spin-echo small angle neutron scattering

Xin Li; Chwen Yang Shew; Yun Liu; Roger Pynn; Emily Liu; Kenneth W. Herwig; Gregory S. Smith; J. Lee Robertson; Wei Ren Chen

doi:10.1063/1.3559451

Prospect for characterizing interacting soft colloidal structures using spin-echo small angle neutron scattering

Xin Li, Chwen Yang Shew, Yun Liu, Roger Pynn, Emily Liu, Kenneth W. Herwig, Gregory S. Smith, J. Lee Robertson, Wei Ren Chen

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Spin-echo small angle neutron scattering (SESANS) provides a new experimental tool for structural investigation. Due to the action of spin-echo encoding, SESANS measures a spatial correlation function in real space, as opposed to the structure factor S(Q), I(Q), in momentum (Q) space measured by conventional small angle neutron scattering. To establish the usefulness of SESANS in structural characterization, particularly for interacting colloidal suspensions, we have previously conducted a theoretical study of the SESANS correlation functions for model systems consisting of particles with uniform density profiles [X. Li, C.-Y. Shew, Y. Liu, R. Pynn, E. Liu, K. W. Herwig, G. S. Smith, J. L. Robertson, and W.-R. Chen J. Chem. Phys. 132, 174509 (2010)]. Within the same framework, we explore in the present paper the prospect of using SESANS to investigate the structural characteristics of colloidal systems consisting of particles with nonuniform intraparticle mass distribution. As an example, a Gaussian model of interacting soft colloids is used to investigate the manifestation of structural softness in a SESANS measurement. The exploration shows a characteristically different SESANS correlation function for interacting soft colloids, in comparison to that of a uniform hard sphere system. The difference arises from the Abel transform imbedded in the mathematical formalism bridging the SESANS spectra and the spatial autocorrelation function.

Original language	English
Article number	094504
Journal	Journal of Chemical Physics
Volume	134
Issue number	9
DOIs	https://doi.org/10.1063/1.3559451
State	Published - Mar 7 2011

Funding

K.W.H., G.S.S., J.L.R., and W.R.C. acknowledge the support of the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy (DOE) for Oak Ridge National Laboratory's Spallation Neutron Source and High Flux Isotope Reactor. C.Y.S. was partially supported by the PSC grants of the City University of New York. R.P. was supported by U.S. Department of Energy through its Office of Basic Energy Sciences, Division of Material Science and Engineering (Grant No. ER46279). X.L. and E.L. were supported in part by U.S. Department of Energy, under NERI-C Award No. DE-FG07-07ID14889, and U.S. Nuclear Regulatory Commission, under Award No. NRC-38-08-950.

Funders	Funder number
Oak Ridge National Laboratory's Spallation Neutron Source and High Flux Isotope Reactor
U.S. Department of Energy
U.S. Nuclear Regulatory Commission	NRC-38-08-950
Basic Energy Sciences
City University of New York
PSC Partners Seeking a Cure
Division of Materials Sciences and Engineering	DE-FG07-07ID14889, ER46279

Access to Document

10.1063/1.3559451

Cite this

@article{69fd24e674234c12921f95bc10cccd73,

title = "Prospect for characterizing interacting soft colloidal structures using spin-echo small angle neutron scattering",

abstract = "Spin-echo small angle neutron scattering (SESANS) provides a new experimental tool for structural investigation. Due to the action of spin-echo encoding, SESANS measures a spatial correlation function in real space, as opposed to the structure factor S(Q), I(Q), in momentum (Q) space measured by conventional small angle neutron scattering. To establish the usefulness of SESANS in structural characterization, particularly for interacting colloidal suspensions, we have previously conducted a theoretical study of the SESANS correlation functions for model systems consisting of particles with uniform density profiles [X. Li, C.-Y. Shew, Y. Liu, R. Pynn, E. Liu, K. W. Herwig, G. S. Smith, J. L. Robertson, and W.-R. Chen J. Chem. Phys. 132, 174509 (2010)]. Within the same framework, we explore in the present paper the prospect of using SESANS to investigate the structural characteristics of colloidal systems consisting of particles with nonuniform intraparticle mass distribution. As an example, a Gaussian model of interacting soft colloids is used to investigate the manifestation of structural softness in a SESANS measurement. The exploration shows a characteristically different SESANS correlation function for interacting soft colloids, in comparison to that of a uniform hard sphere system. The difference arises from the Abel transform imbedded in the mathematical formalism bridging the SESANS spectra and the spatial autocorrelation function.",

author = "Xin Li and Shew, {Chwen Yang} and Yun Liu and Roger Pynn and Emily Liu and Herwig, {Kenneth W.} and Smith, {Gregory S.} and Robertson, {J. Lee} and Chen, {Wei Ren}",

year = "2011",

month = mar,

day = "7",

doi = "10.1063/1.3559451",

language = "English",

volume = "134",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics",

number = "9",

}

TY - JOUR

T1 - Prospect for characterizing interacting soft colloidal structures using spin-echo small angle neutron scattering

AU - Li, Xin

AU - Shew, Chwen Yang

AU - Liu, Yun

AU - Pynn, Roger

AU - Liu, Emily

AU - Herwig, Kenneth W.

AU - Smith, Gregory S.

AU - Robertson, J. Lee

AU - Chen, Wei Ren

PY - 2011/3/7

Y1 - 2011/3/7

N2 - Spin-echo small angle neutron scattering (SESANS) provides a new experimental tool for structural investigation. Due to the action of spin-echo encoding, SESANS measures a spatial correlation function in real space, as opposed to the structure factor S(Q), I(Q), in momentum (Q) space measured by conventional small angle neutron scattering. To establish the usefulness of SESANS in structural characterization, particularly for interacting colloidal suspensions, we have previously conducted a theoretical study of the SESANS correlation functions for model systems consisting of particles with uniform density profiles [X. Li, C.-Y. Shew, Y. Liu, R. Pynn, E. Liu, K. W. Herwig, G. S. Smith, J. L. Robertson, and W.-R. Chen J. Chem. Phys. 132, 174509 (2010)]. Within the same framework, we explore in the present paper the prospect of using SESANS to investigate the structural characteristics of colloidal systems consisting of particles with nonuniform intraparticle mass distribution. As an example, a Gaussian model of interacting soft colloids is used to investigate the manifestation of structural softness in a SESANS measurement. The exploration shows a characteristically different SESANS correlation function for interacting soft colloids, in comparison to that of a uniform hard sphere system. The difference arises from the Abel transform imbedded in the mathematical formalism bridging the SESANS spectra and the spatial autocorrelation function.

AB - Spin-echo small angle neutron scattering (SESANS) provides a new experimental tool for structural investigation. Due to the action of spin-echo encoding, SESANS measures a spatial correlation function in real space, as opposed to the structure factor S(Q), I(Q), in momentum (Q) space measured by conventional small angle neutron scattering. To establish the usefulness of SESANS in structural characterization, particularly for interacting colloidal suspensions, we have previously conducted a theoretical study of the SESANS correlation functions for model systems consisting of particles with uniform density profiles [X. Li, C.-Y. Shew, Y. Liu, R. Pynn, E. Liu, K. W. Herwig, G. S. Smith, J. L. Robertson, and W.-R. Chen J. Chem. Phys. 132, 174509 (2010)]. Within the same framework, we explore in the present paper the prospect of using SESANS to investigate the structural characteristics of colloidal systems consisting of particles with nonuniform intraparticle mass distribution. As an example, a Gaussian model of interacting soft colloids is used to investigate the manifestation of structural softness in a SESANS measurement. The exploration shows a characteristically different SESANS correlation function for interacting soft colloids, in comparison to that of a uniform hard sphere system. The difference arises from the Abel transform imbedded in the mathematical formalism bridging the SESANS spectra and the spatial autocorrelation function.

UR - http://www.scopus.com/inward/record.url?scp=79952495566&partnerID=8YFLogxK

U2 - 10.1063/1.3559451

DO - 10.1063/1.3559451

M3 - Article

C2 - 21384982

AN - SCOPUS:79952495566

SN - 0021-9606

VL - 134

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 9

M1 - 094504

ER -

Prospect for characterizing interacting soft colloidal structures using spin-echo small angle neutron scattering

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this