Laser ablation studies of nanocomposites

Mkrtychev, O. V.; Privalov, V. E.; Fotiadi, Alexander E.; Shemanin, V. G.

doi:10.1016/j.spjpm.2015.03.007

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…The authors of [23][24][25][26][27][28][29][30][31][32] carried out research of various materials, including dielectrics and metals. The results of one calculation for metals are shown here.…”

Section: The Methods Of Momentsmentioning

confidence: 99%

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Calculation of the temperature field of the material in the thermal model of laser ablation

Mkrtychev

2019

EPJ Web Conf.

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The mechanisms of laser ablation of materials under the interaction of powerful pulsed laser radiation with a material coated with a thin film system were studied. One of the first models of such interaction of high-power laser radiation with matter was the thermal model. A onetemperature thermal model was used when considering the interaction of laser radiation with dielectrics, and a two-temperature model was used when considering the interaction of laser radiation with metals. When studying the processes of laser ablation within the framework of the thermal model, the method of moments with a special selection of the test function was chosen. Computer simulation was conducted to study the dependence of the surface temperature and the characteristic thermal length on the radiant flux. Variants with both constant and variable optophysical characteristics of the phenomenon were considered. Calculations were performed for different time ranges under different initial conditions. The results of the numerical experiment agree well with the data of other authors.

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Section: The Methods Of Momentsmentioning

confidence: 99%

“…In this research, the results of a theoretical study of the effect of high-power pulsed laser radiation on materials were considered [23][24][25][26][27][28][29][30][31][32]. The aim of the research is to compare the known calculation procedures of the temperature field when a material is irradiated with short laser pulses.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the temperature field of the material in the thermal model of laser ablation

Mkrtychev

2019

EPJ Web Conf.

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“…3 Furthermore, the ablation efficiency of a particular material depends on different laser parameters such as wavelength, 4 fluence, 5 pulse width, 6 and repetition rate, 7 and the optical, thermal, and mechanical properties of the ablation target. 8 One indicator to evaluate the efficiency of ablation is the ablation threshold. 9 The ablation threshold is defined as the required energy input to initialize matter removal via photoinduced disintegration.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Usually, laser ablation of sufficiently absorbing homogeneous materials is studied where the energy density required for ablation is given by the local energy of the laser spot and the absorption coefficient . Furthermore, the ablation efficiency of a particular material depends on different laser parameters such as wavelength, fluence, pulse width, and repetition rate, and the optical, thermal, and mechanical properties of the ablation target . One indicator to evaluate the efficiency of ablation is the ablation threshold .…”

Section: Introductionmentioning

confidence: 99%

Nanodiamond-Polymer Composites for Decreased Laser Ablation Thresholds

Laube,

Yang,

Naumann

et al. 2024

ACS Appl. Nano Mater.

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During the past decade, nanodiamonds were demonstrated to be an environmentally friendly, easy-to-handle, accessible additive for polymer science, which also offers sensory-relevant properties. Therefore, nanodiamond-based composites are promising substrates for medical applications, heat transfer materials in electronic devices, or three-dimensional (3D) materials for sensor applications within various fields related to automotive, sensory, and printing applications. One key factor for the implementation of composite materials in modern devices is the precise and energy-efficient structuring of the material. Herein, laser ablation-induced structuring using pulsed laser systems is one of the most applied approaches to achieve micro-and nanostructure surfaces. In this work, nanodiamond additives were demonstrated to have a significant beneficial impact on the laser ablation performance of nanodiamond acrylate composites, in particular, on the laser ablation threshold and the incubation effect. Furthermore, we show that surface modification using the surface graphite content is a crucial parameter for the ablation. Employing a controlled surface graphitization of the nanodiamonds, their optical properties and interaction with the polymer can be influenced to improve the laser ablation performance of composites. In comparison to pure sp 2 carbon additives like graphene oxide, graphitized nanodiamond composites exhibit higher optical density and diffuse light scattering properties. These properties lead to a more surface-located light-induced energy input. The investigations of the laser ablation spot also allowed first insight into the mechanism of the ablation, where the surface graphite of the nanodiamond also influences the bonding strength of the nanodiamond (ND) to the acrylate system. This supports thermal and mechanical ablation and, thus, a decrease of the laser ablation threshold energy. Our results demonstrate that nanodiamond composites are promising materials for laser structuring processing. Further improvement of the diamond surface might even improve their applicability.

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“…В виду все большего усложнения интегральных схем и выполняемых ими функций, необходимо проводить исследования с углубленным теоретическим анализом задач определения оптических и геометрических характеристик синтезируемых пленочных покрытий. В работах [1][2][3][4][5][6] экспериментально и теоретически исследовались проблемы взаимодействия мощного импульсного излучения со стеклянными образцами, покрытыми наноразмерными пленками. В числе ряда задач, возникающих при таком взаимодействии излучения с веществом, важную роль играют задачи определения оптических и геометрических характеристик покрытий неразрушающими методами.…”

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Determining Optical Characteristics of Plane-Parallel Systems Using Spectrometry

Mkrtychev¹

2018

Proceedings of the RAS Ufa Scientific Centre

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Рассмотрены результаты экспериментов по определению показателей преломления и толщин наноразмерных слоев тонкопленочных покрытий из диоксидов кремния и титана, нанесенных на стеклянную подложку. Проведен теоретический анализ и численные эксперименты моделирования процесса взаимодействия лазерного монохроматического излучения с системой плоскопараллельных прозрачных пленок. Разработана система рекуррентных соотношений для определения показателя преломления и толщины слоев наноразмерных пленок. Результаты исследований сравниваются с результатами численного моделирования параметров системы плоскопараллельных пленок по известным методам Абеле и Скандоне-Баллерини. Ключевые слова: плоскопараллельные системы, тонкопленочные покрытия, отражение, преломление, поглощение, рекуррентные соотношения.

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Laser ablation studies of nanocomposites

Cited by 8 publications

References 3 publications

Calculation of the temperature field of the material in the thermal model of laser ablation

Calculation of the temperature field of the material in the thermal model of laser ablation

Nanodiamond-Polymer Composites for Decreased Laser Ablation Thresholds

Determining Optical Characteristics of Plane-Parallel Systems Using Spectrometry

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