Anisotropic deformation of colloidal particles under MeV ion irradiation

T. Van Dillen; E. Snoeks; W. Fukarek; C. M. Van Kats; K. P. Velikov; A. Van Blaaderen; A. Polman

doi:10.1016/S0168-583X(00)00611-X

Anisotropic deformation of colloidal particles under MeV ion irradiation

T. Van Dillen^*, E. Snoeks, W. Fukarek, C. M. Van Kats, K. P. Velikov, A. Van Blaaderen, A. Polman

^*Corresponding author for this work

Sub Soft Condensed Matter

Research output: Contribution to journal › Conference article › Academic › peer-review

Abstract

Spherical silica colloids with a diameter of 1.0 μm, made by wet chemical synthesis, were irradiated with 2-16 MeV Au ions at fluences ranging from 2 × 10¹⁴to 11 × 10¹⁴ cm^-2. The irradiation induces an anisotropic plastic deformation turning the spherical colloids into ellipsoidal oblates. After 16 MeV Au irradiation to a fluence of 11 × 10¹⁴ cm^-2 a size-aspect ratio of 4.7 is achieved. The size polydispersity (∼3%) remains unaffected by the irradiation. The transverse diameter increases with the electronic energy loss above a threshold value of ∼0.6 keV/nm. Non-ellipsoidal colloids are observed in the case that the projected ion range is smaller than the colloid diameter. The deformation effect is also observed for micro-crystalline ZnS and amorphous TiO₂ colloids, as well as ZnS/SiO₂ core/shell particles. No deformation is observed for crystalline Al₂O₃ and Ag particles. The data provide strong support for the thermal spike model of anisotropic deformation.

Original language	English
Pages (from-to)	350-356
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume	175
DOIs	https://doi.org/10.1016/S0168-583X(00)00611-X
Publication status	Published - Apr 2001
Event	12th International Conference on Ion Beam Modification of Materials - Rio Grande do Sul, Brazil Duration: 3 Sept 2000 → 8 Sept 2000

Bibliographical note

Funding Information:
We gratefully acknowledge W.A.M. van Maurik (Utrecht University) for his support with the electron microscopy, G.E. Zegers for making the Ag particles (Utrecht University, unpublished work), and M.P. van Bruggen (Philips Research) for providing Al 2 O 3 colloids. This work is part of the research program of the Foundation for Fundamental Research on Matter (FOM) and was financially supported by the Dutch Organization for Scientific Research (NWO). It was also supported by the EC Large Scale Facility “AIM-Center for Application of Ion Beams in Materials Research”, project no. ERB FMGE CT98 0146.

Keywords

Anisotropic deformation
Colloid
Ion irradiation
SiO
Thermal spike

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10.1016/S0168-583X(00)00611-X

Cite this

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title = "Anisotropic deformation of colloidal particles under MeV ion irradiation",

abstract = "Spherical silica colloids with a diameter of 1.0 μm, made by wet chemical synthesis, were irradiated with 2-16 MeV Au ions at fluences ranging from 2 × 1014to 11 × 1014 cm-2. The irradiation induces an anisotropic plastic deformation turning the spherical colloids into ellipsoidal oblates. After 16 MeV Au irradiation to a fluence of 11 × 1014 cm-2 a size-aspect ratio of 4.7 is achieved. The size polydispersity (∼3%) remains unaffected by the irradiation. The transverse diameter increases with the electronic energy loss above a threshold value of ∼0.6 keV/nm. Non-ellipsoidal colloids are observed in the case that the projected ion range is smaller than the colloid diameter. The deformation effect is also observed for micro-crystalline ZnS and amorphous TiO2 colloids, as well as ZnS/SiO2 core/shell particles. No deformation is observed for crystalline Al2O3 and Ag particles. The data provide strong support for the thermal spike model of anisotropic deformation.",

keywords = "Anisotropic deformation, Colloid, Ion irradiation, SiO, Thermal spike",

author = "{Van Dillen}, T. and E. Snoeks and W. Fukarek and {Van Kats}, {C. M.} and Velikov, {K. P.} and {Van Blaaderen}, A. and A. Polman",

note = "Funding Information: We gratefully acknowledge W.A.M. van Maurik (Utrecht University) for his support with the electron microscopy, G.E. Zegers for making the Ag particles (Utrecht University, unpublished work), and M.P. van Bruggen (Philips Research) for providing Al 2 O 3 colloids. This work is part of the research program of the Foundation for Fundamental Research on Matter (FOM) and was financially supported by the Dutch Organization for Scientific Research (NWO). It was also supported by the EC Large Scale Facility “AIM-Center for Application of Ion Beams in Materials Research”, project no. ERB FMGE CT98 0146.; 12th International Conference on Ion Beam Modification of Materials ; Conference date: 03-09-2000 Through 08-09-2000",

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doi = "10.1016/S0168-583X(00)00611-X",

language = "English",

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T1 - Anisotropic deformation of colloidal particles under MeV ion irradiation

AU - Van Dillen, T.

AU - Snoeks, E.

AU - Fukarek, W.

AU - Van Kats, C. M.

AU - Velikov, K. P.

AU - Van Blaaderen, A.

AU - Polman, A.

N1 - Funding Information: We gratefully acknowledge W.A.M. van Maurik (Utrecht University) for his support with the electron microscopy, G.E. Zegers for making the Ag particles (Utrecht University, unpublished work), and M.P. van Bruggen (Philips Research) for providing Al 2 O 3 colloids. This work is part of the research program of the Foundation for Fundamental Research on Matter (FOM) and was financially supported by the Dutch Organization for Scientific Research (NWO). It was also supported by the EC Large Scale Facility “AIM-Center for Application of Ion Beams in Materials Research”, project no. ERB FMGE CT98 0146.

PY - 2001/4

Y1 - 2001/4

N2 - Spherical silica colloids with a diameter of 1.0 μm, made by wet chemical synthesis, were irradiated with 2-16 MeV Au ions at fluences ranging from 2 × 1014to 11 × 1014 cm-2. The irradiation induces an anisotropic plastic deformation turning the spherical colloids into ellipsoidal oblates. After 16 MeV Au irradiation to a fluence of 11 × 1014 cm-2 a size-aspect ratio of 4.7 is achieved. The size polydispersity (∼3%) remains unaffected by the irradiation. The transverse diameter increases with the electronic energy loss above a threshold value of ∼0.6 keV/nm. Non-ellipsoidal colloids are observed in the case that the projected ion range is smaller than the colloid diameter. The deformation effect is also observed for micro-crystalline ZnS and amorphous TiO2 colloids, as well as ZnS/SiO2 core/shell particles. No deformation is observed for crystalline Al2O3 and Ag particles. The data provide strong support for the thermal spike model of anisotropic deformation.

AB - Spherical silica colloids with a diameter of 1.0 μm, made by wet chemical synthesis, were irradiated with 2-16 MeV Au ions at fluences ranging from 2 × 1014to 11 × 1014 cm-2. The irradiation induces an anisotropic plastic deformation turning the spherical colloids into ellipsoidal oblates. After 16 MeV Au irradiation to a fluence of 11 × 1014 cm-2 a size-aspect ratio of 4.7 is achieved. The size polydispersity (∼3%) remains unaffected by the irradiation. The transverse diameter increases with the electronic energy loss above a threshold value of ∼0.6 keV/nm. Non-ellipsoidal colloids are observed in the case that the projected ion range is smaller than the colloid diameter. The deformation effect is also observed for micro-crystalline ZnS and amorphous TiO2 colloids, as well as ZnS/SiO2 core/shell particles. No deformation is observed for crystalline Al2O3 and Ag particles. The data provide strong support for the thermal spike model of anisotropic deformation.

KW - Anisotropic deformation

KW - Colloid

KW - Ion irradiation

KW - SiO

KW - Thermal spike

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U2 - 10.1016/S0168-583X(00)00611-X

DO - 10.1016/S0168-583X(00)00611-X

M3 - Conference article

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VL - 175

SP - 350

EP - 356

JO - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

T2 - 12th International Conference on Ion Beam Modification of Materials

Y2 - 3 September 2000 through 8 September 2000

ER -

Anisotropic deformation of colloidal particles under MeV ion irradiation

Abstract

Bibliographical note

Keywords

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