دورية أكاديمية
Selective Laser Sintering of Laser Printed Ag Nanoparticle Micropatterns at High Repetition Rates
العنوان: | Selective Laser Sintering of Laser Printed Ag Nanoparticle Micropatterns at High Repetition Rates |
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المؤلفون: | Filimon Zacharatos, Ioannis Theodorakos, Panagiotis Karvounis, Simon Tuohy, Nuno Braz, Semyon Melamed, Ayala Kabla, Fernando de la Vega, Kostas Andritsos, Antonios Hatziapostolou, Dimitris Karnakis, Ioanna Zergioti |
المصدر: | Materials, Vol 11, Iss 11, p 2142 (2018) |
بيانات النشر: | MDPI AG, 2018. |
سنة النشر: | 2018 |
المجموعة: | LCC:Technology LCC:Electrical engineering. Electronics. Nuclear engineering LCC:Engineering (General). Civil engineering (General) LCC:Microscopy LCC:Descriptive and experimental mechanics |
مصطلحات موضوعية: | laser sintering, laser induced forward transfer, silver nanoparticle inks, heat affected zone, high speed laser processing, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85 |
الوصف: | The increasing development of flexible and printed electronics has fueled substantial advancements in selective laser sintering, which has been attracting interest over the past decade. Laser sintering of metal nanoparticle dispersions in particular (from low viscous inks to high viscous pastes) offers significant advantages with respect to more conventional thermal sintering or curing techniques. Apart from the obvious lateral selectivity, the use of short-pulsed and high repetition rate lasers minimizes the heat affected zone and offers unparalleled control over a digital process, enabling the processing of stacked and pre-structured layers on very sensitive polymeric substrates. In this work, the authors have conducted a systematic investigation of the laser sintering of micro-patterns comprising Ag nanoparticle high viscous inks: The effect of laser pulse width within the range of 20⁻200 nanoseconds (ns), a regime which many commercially available, high repetition rate lasers operate in, has been thoroughly investigated experimentally in order to define the optimal processing parameters for the fabrication of highly conductive Ag patterns on polymeric substrates. The in-depth temperature profiles resulting from the effect of laser pulses of varying pulse widths have been calculated using a numerical model relying on the finite element method, which has been fed with physical parameters extracted from optical and structural characterization. Electrical characterization of the resulting sintered micro-patterns has been benchmarked against the calculated temperature profiles, so that the resistivity can be associated with the maximal temperature value. This quantitative correlation offers the possibility to predict the optimal process window in future laser sintering experiments. The reported computational and experimental findings will foster the wider adoption of laser micro-sintering technology for laboratory and industrial use. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1996-1944 |
Relation: | https://www.mdpi.com/1996-1944/11/11/2142; https://doaj.org/toc/1996-1944 |
DOI: | 10.3390/ma11112142 |
URL الوصول: | https://doaj.org/article/a83f15af95d44a738214a1a65ec29f22 |
رقم الأكسشن: | edsdoj.83f15af95d44a738214a1a65ec29f22 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 19961944 |
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DOI: | 10.3390/ma11112142 |