Propagation of Elliptically Polarized Light through Ordered Block Copolymers

Chappel J. Sharrock; Ja Eon Cho; Xin Wang; Xiuhong Li; Whitney Loo; Nitash P. Balsara; Bruce A. Garetz

doi:10.1021/acs.macromol.1c01134

Propagation of Elliptically Polarized Light through Ordered Block Copolymers

Chappel J. Sharrock, Ja Eon Cho, Xin Wang, Xiuhong Li, Whitney Loo, Nitash P. Balsara, Bruce A. Garetz

Chemical and Biomolecular Engineering

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

Abstract

The grain structure of an ordered block copolymer material affects its mechanical, electrical, and optical properties, and depolarized light scattering (DPLS) has proven to be a useful method for characterizing this grain structure. In this study, we obtain and analyze DPLS patterns from an ordered diblock copolymer/lithium salt mixture by propagating eight different types ofellipticallypolarized (EP) light through the sample and demonstrate that the patterns are consistent with the ellipsoidal grain model (EGM), which assumes that the sample consists of randomly oriented ellipsoidal grains with optic axes coincident with their shape axes. EP light probes a different population of grains in a sample than either linearly or circularly polarized light and thus may be useful for the characterization of samples with anisotropic grain orientation distributions.

Original language	English (US)
Pages (from-to)	8372-8380
Number of pages	9
Journal	Macromolecules
Volume	54
Issue number	18
DOIs	https://doi.org/10.1021/acs.macromol.1c01134
State	Published - Sep 28 2021

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Propagation of Elliptically Polarized Light through Ordered Block Copolymers",

abstract = "The grain structure of an ordered block copolymer material affects its mechanical, electrical, and optical properties, and depolarized light scattering (DPLS) has proven to be a useful method for characterizing this grain structure. In this study, we obtain and analyze DPLS patterns from an ordered diblock copolymer/lithium salt mixture by propagating eight different types ofellipticallypolarized (EP) light through the sample and demonstrate that the patterns are consistent with the ellipsoidal grain model (EGM), which assumes that the sample consists of randomly oriented ellipsoidal grains with optic axes coincident with their shape axes. EP light probes a different population of grains in a sample than either linearly or circularly polarized light and thus may be useful for the characterization of samples with anisotropic grain orientation distributions.",

author = "Sharrock, {Chappel J.} and Cho, {Ja Eon} and Xin Wang and Xiuhong Li and Whitney Loo and Balsara, {Nitash P.} and Garetz, {Bruce A.}",

note = "Funding Information: Primary funding for this work was provided by the National Science Foundation through Awards DMR-1904537 and DMR-1904508. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the National Science Foundation. Publisher Copyright: {\textcopyright} 2021 American Chemical Society",

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doi = "10.1021/acs.macromol.1c01134",

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AU - Sharrock, Chappel J.

AU - Cho, Ja Eon

AU - Wang, Xin

AU - Li, Xiuhong

AU - Loo, Whitney

AU - Balsara, Nitash P.

AU - Garetz, Bruce A.

N1 - Funding Information: Primary funding for this work was provided by the National Science Foundation through Awards DMR-1904537 and DMR-1904508. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the National Science Foundation. Publisher Copyright: © 2021 American Chemical Society

PY - 2021/9/28

Y1 - 2021/9/28

N2 - The grain structure of an ordered block copolymer material affects its mechanical, electrical, and optical properties, and depolarized light scattering (DPLS) has proven to be a useful method for characterizing this grain structure. In this study, we obtain and analyze DPLS patterns from an ordered diblock copolymer/lithium salt mixture by propagating eight different types ofellipticallypolarized (EP) light through the sample and demonstrate that the patterns are consistent with the ellipsoidal grain model (EGM), which assumes that the sample consists of randomly oriented ellipsoidal grains with optic axes coincident with their shape axes. EP light probes a different population of grains in a sample than either linearly or circularly polarized light and thus may be useful for the characterization of samples with anisotropic grain orientation distributions.

AB - The grain structure of an ordered block copolymer material affects its mechanical, electrical, and optical properties, and depolarized light scattering (DPLS) has proven to be a useful method for characterizing this grain structure. In this study, we obtain and analyze DPLS patterns from an ordered diblock copolymer/lithium salt mixture by propagating eight different types ofellipticallypolarized (EP) light through the sample and demonstrate that the patterns are consistent with the ellipsoidal grain model (EGM), which assumes that the sample consists of randomly oriented ellipsoidal grains with optic axes coincident with their shape axes. EP light probes a different population of grains in a sample than either linearly or circularly polarized light and thus may be useful for the characterization of samples with anisotropic grain orientation distributions.

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EP - 8380

JO - Macromolecules

JF - Macromolecules

IS - 18

ER -

Propagation of Elliptically Polarized Light through Ordered Block Copolymers

Abstract

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