Harmonic analysis of surface instability patterns on colloidal particles

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Harmonic analysis of surface instability patterns on colloidal particles. / Kämäräinen, Tero; Ago, Mariko; Seitsonen, Jani; Raula, Janne; Kauppinen, Esko I.; Ruokolainen, Janne; Rojas, Orlando J.

In: Soft Matter, Vol. 14, No. 17, 01.01.2018, p. 3387-3396.

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@article{dcd5671e483b48479e1214454caa9f5c,
title = "Harmonic analysis of surface instability patterns on colloidal particles",
abstract = "Wrinkling of colloidal particles alter a wide variety of interfacial properties but quantitative topographical descriptions have been explored experimentally to a very limited extent. In this study, we present a harmonic analysis of surface wrinkles and folds on submicron colloidal particles, obtained using an aerosol flow route, with small radius (<300 nm) and high crust thickness-to-radius ratio (>0.1). The particle surface coordinates were mapped in their entirety using cryo-electron tomography and subsequently reconstructed using spherical harmonics, allowing a spectral topographical description of the instability patterns and the identification of their surface modes by lateral wavelength. Wrinkled and crumpled particles showed a similar surface roughness spectrum, wherein differences were found most noticeable in the large wavelength region. The analysis of preferred directions of harmonic frequencies indicated a possible axial or planar alignment attributed to the directionality of the surface corrugations. The employed characterization methodology can further the study of topographical influences on colloidal interactions.",
author = "Tero K{\"a}m{\"a}r{\"a}inen and Mariko Ago and Jani Seitsonen and Janne Raula and Kauppinen, {Esko I.} and Janne Ruokolainen and Rojas, {Orlando J.}",
year = "2018",
month = "1",
day = "1",
doi = "10.1039/c8sm00383a",
language = "English",
volume = "14",
pages = "3387--3396",
journal = "Soft Matter",
issn = "1744-683X",
number = "17",

}

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TY - JOUR

T1 - Harmonic analysis of surface instability patterns on colloidal particles

AU - Kämäräinen, Tero

AU - Ago, Mariko

AU - Seitsonen, Jani

AU - Raula, Janne

AU - Kauppinen, Esko I.

AU - Ruokolainen, Janne

AU - Rojas, Orlando J.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Wrinkling of colloidal particles alter a wide variety of interfacial properties but quantitative topographical descriptions have been explored experimentally to a very limited extent. In this study, we present a harmonic analysis of surface wrinkles and folds on submicron colloidal particles, obtained using an aerosol flow route, with small radius (<300 nm) and high crust thickness-to-radius ratio (>0.1). The particle surface coordinates were mapped in their entirety using cryo-electron tomography and subsequently reconstructed using spherical harmonics, allowing a spectral topographical description of the instability patterns and the identification of their surface modes by lateral wavelength. Wrinkled and crumpled particles showed a similar surface roughness spectrum, wherein differences were found most noticeable in the large wavelength region. The analysis of preferred directions of harmonic frequencies indicated a possible axial or planar alignment attributed to the directionality of the surface corrugations. The employed characterization methodology can further the study of topographical influences on colloidal interactions.

AB - Wrinkling of colloidal particles alter a wide variety of interfacial properties but quantitative topographical descriptions have been explored experimentally to a very limited extent. In this study, we present a harmonic analysis of surface wrinkles and folds on submicron colloidal particles, obtained using an aerosol flow route, with small radius (<300 nm) and high crust thickness-to-radius ratio (>0.1). The particle surface coordinates were mapped in their entirety using cryo-electron tomography and subsequently reconstructed using spherical harmonics, allowing a spectral topographical description of the instability patterns and the identification of their surface modes by lateral wavelength. Wrinkled and crumpled particles showed a similar surface roughness spectrum, wherein differences were found most noticeable in the large wavelength region. The analysis of preferred directions of harmonic frequencies indicated a possible axial or planar alignment attributed to the directionality of the surface corrugations. The employed characterization methodology can further the study of topographical influences on colloidal interactions.

UR - http://www.scopus.com/inward/record.url?scp=85046654093&partnerID=8YFLogxK

U2 - 10.1039/c8sm00383a

DO - 10.1039/c8sm00383a

M3 - Article

VL - 14

SP - 3387

EP - 3396

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 17

ER -

ID: 21522119