publication . Article . 2001

Colloidal assemblies modified by ion irradiation

E. Snoeks; A. van Blaaderen; T. van Dillen; C.M. van Kats; Krassimir P. Velikov; Mark L. Brongersma; Albert Polman;
Open Access English
  • Published: 01 Jan 2001
  • Country: Netherlands
Abstract Spherical SiO2 and ZnS colloidal particles show a dramatic anisotropic plastic deformation under 4 MeV Xe ion irradiation, that changes their shape into oblate ellipsoidal, with an aspect ratio that can be precisely controlled by the ion fluence. The 290 nm and 1.1 μm diameter colloids were deposited on a Si substrate and irradiated at 90 K, using fluences in the range 3×10 13 –8×10 14 cm −2 . The transverse particle diameter shows a linear increase with ion fluence, while the longitudinal diameter shrinks; the particle volume remains constant. Size aspect ratios up to 3.1 are achieved. Applications of the ion beam deformation technique are shown in stu...
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free text keywords: Colloid, Ion irradiation, Anisotropic deformation, Liquid crystal, Nanolithography, Colloidal crystal, Nuclear and High Energy Physics, Instrumentation, Irradiation, Materials science, Particle, Ion beam, Molecular physics, Optics, business.industry, business, Ion
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