Page 43 - MSAM-1-2

Materials Science in Additive Manufacturing Intense pulsed light sintering of conductive film

A B

C D

Figure 13. Optimization results with respect to sintered line features. (A-C) The variation of the obtained Pareto front under the generations of 500, 1000,
and 2000, respectively. (D) The obtained Pareto optimal set corresponding to (C).

A B could be used to further extend the selection. Compared
with the desirability function, the non-dominated sorting-
based multi-objective optimization approach can provide
different selections according to users’ preference, which
will be beneficial to trade-off the conflicting responses in a
more objective manner.
To verify the solutions, we have identified two solution
C D sets that are close to the obtained Pareto optimal sets, which
are Set 1 (sintering distance: 41.5 cm; print layers: 3) and
Set 2 (sintering distance: 42.5 cm; print layers: 2). Figure 14
shows the optical images and the sheet resistance of the
sintered silver film. The results suggest that the proposed
approach can effectively identify a set of Pareto-optimal
points for designers. Furthermore, the circuit designer
could select the preferred solution from a set of Pareto-
Figure 14. Optical images and confocal micrographs showing the surface
morphologies of (A and C) Set 1 and (B and D) Set 2 as well as their optimal solutions rather than from a single point, and the
corresponding surface roughness and sheet resistance. selection could be further extended from the cluster that
the chosen solution represents, the surface morphology,
and electrical property of the sintered film could be
for designers and optimize the printing quality in a more optimized in more robust and systematic manners.
robust manner. However, as the number of print layers is 3. Conclusion
limited to be an integer in this research, some approximate
solutions such as (42.22, 2) and (41.50, 3) can be selected In this work, a conflicting relationship between the
from the optimal Pareto front to replace the initial electrical property and physical property of the photonic
solutions, and more solutions from the selected cluster sintered silver thin film prepared using aerosol jet printing

Volume 1 Issue 2 (2022) 12 http://doi.org/10.18063/msam.v1i2.10