<p></p><p>Flexible electronics involve electronic circuits fabricated
on flexible substrates. They have promising applications in wearable devices
and flexible sensors etc. and have thus attracted much research interest in
recent years. The working environment of flexible electronic devices may
require them to go through repeating deformations, during which cracks may
generate and grow in the metallic components of the devices, reducing service
life of these devices. To address such challenges, it is desirable to
investigate methods to improve the reliability of flexible electronics in these
working conditions. </p>
<p>This research reported here will focus on topics related to laser-based
fabrication of carbon nanotube-metal composites on flexible substrates: </p>
<p>Experimental studies were carried out to investigate the
structures and properties of carbon nanotube – metal composites produced by a laser-based
fabrication process on flexible substrates.
Extensive characterizations and
testes were carried out, including measurements of electrical resistivity of
laser-sintered material, characterizations with SEM, TEM, EDS and XPS, and
mechanical performance tests (bending fatigue test, static tensile test and
adhesion test). The experimental study suggests that the laser-fabricated metal
composites have promising potentials to help enhancing reliability and
durability of metal components in flexible electronic devices. </p>
<p>A molecular dynamics model was also developed to study the coalescence
of metal nanoparticles (gold NPs in this study) around the end of a
multi-walled carbon nanotube (MWCNT) and their interaction with the CNT at
elevated temperatures. The MD model was first tested by comparing the
MD-predicted NP melting points with experiment-deduced results from the
literature. Then the coalescence of five 3-nm Au NPs around the end of a MWCNT
and their interactions with the CNT were studied with MD simulations. The
molecular system was studied under different elevated temperatures and for
different carbon nanotube diameters, and the simulation results were analyzed
and discussed. </p><br><p></p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/8315348 |
| Date | 14 August 2019 |
| Creators | Zheng Kang (6871595) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/Laser_Sintering_of_Nanocomposite_on_Flexible_Substrate_Experimental_Study_and_Molecular_Dynamics_Simulation/8315348 |
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