2013
DOI: 10.1080/21663831.2013.856816
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Swift Heavy Ion Shape Transformation of Au Nanocrystals Mediated by Molten Material Flow and Recrystallization

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Cited by 43 publications
(94 citation statements)
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“…The simulations reproduce the core shell structure with strikingly similar dimensions. The core-shell track structure was pivotal in explaining a process by which metallic nanoparticles are elongated by swift heavy ion irradiation [51]. In amorphous Si and Ge, where ion tracks were inferred from macroscopic plastic deformation observed after high fluence swift heavy ion irradiation, SAXS measurements provided clear evidence for their existence and also revealed core shell track structures [4,58].…”
Section: Small-angle X-ray Scatteringmentioning
confidence: 98%
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“…The simulations reproduce the core shell structure with strikingly similar dimensions. The core-shell track structure was pivotal in explaining a process by which metallic nanoparticles are elongated by swift heavy ion irradiation [51]. In amorphous Si and Ge, where ion tracks were inferred from macroscopic plastic deformation observed after high fluence swift heavy ion irradiation, SAXS measurements provided clear evidence for their existence and also revealed core shell track structures [4,58].…”
Section: Small-angle X-ray Scatteringmentioning
confidence: 98%
“…HRXRD can be employed to measure the strain in strainengineered materials for enhanced physical properties [46,47], and to examine correlation between strain/stress and disorder in materials subjected to ion irradiation [30,48]. SAXS allows characterization of density changes on the nanoscale associated with irradiation-induced microstructural transformations, such as formation of extended defect [50], modification of nanoparticle shape [49,51], and creation of ion tracks [23,52]. A brief description of both techniques is presented below, and some recent results are discussed to illustrate their analytical power.…”
Section: X-ray Based Techniquesmentioning
confidence: 99%
“…Iones con un poder de frenado mayor generan una mayor elongación con un único impacto; pero incluso en este caso son necesarios varios impactos para generar un rodillo con una relación de aspecto considerable. 69 Las simulaciones de MD nos permiten entender los mecanismos físicos detrás de la elongación de las nanopartículas. Figura 7.4: Evolución de las nanopartículas de plata embebidas en sílice tras 75 ps de la deposición de la energía en un cilindro caliente de radio a = 3.5 nm orientado su eje con la dirección vertical y 75 ps de relajación con una fuerza de fricción de Langevin, como se describe en el apartado 3.3.1, del Capítulo 3.…”
Section: Análisis Mediante Dinámica Molecularunclassified
“…58 Recientemente, hay bastantes trabajos que reportan el uso de iones pesados de alta energía para elongar nanopartículas de plata, 59,60 oro, [61][62][63][64] zinc, 65,66 y níquel. 67 Desafortunadamente, la física que explica la transformación de esfera a rodillo no ha sido completamente entendida, incluso si ha sido ampliamente estudiada 68,69,226 y se han propuesto algunos modelos fenomenológicos. 70,71 Una de las principales causas de este desconocimiento es la falta de información durante los estados intermedios de deformación.…”
Section: Introductionunclassified
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