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E u r o S c i C o n C o n f e r e n c e o n
Nanotechnology &
Smart Materials
Nano Research & Applications
ISSN 2471-9838
O c t o b e r 0 4 - 0 6 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Nanotechnology & Smart Materials 2018
Page 57
I
t is well expected that the future electronics will be in the form of wearable
electronics. Google’s Smart Glass and Apple’s iWatch are the first generations of
wearable electronics. However, they are still mainly composed of rigid electronics,
even though human body is soft and elastic. To realize more meaningful and
practical wearable electronics, electronic components should be stretchable or
at least flexible. We developed various laser based selective process of metal
nanomaterials for flexible and stretchable electronics fabrication. The proposed
technology has the following features. Nanomaterials have unique thermal
properties such as size dependent melting temperature drop. This will allow novel
metaldepositionmethoddevelopmentonplasticsubstratewithoutthermaldamage
to the substrate. Nanomaterials have unique optical properties such as strong
surface plasmon absorption peak. Due to this characteristic, if the wavelength is
tuned properly, very efficient and strong laser absorption is possible. Laser can
be used as a local heat source to selectively induce the melting of nanomaterials
with the minimum or no thermal damage to the substrate. Nanomaterials have
enhanced mechanical properties. This will allow the development of the very
reliable flexible and stretchable electronics. As a feasibility test of nanomaterial
based on flexible and stretchable electronics research, we demonstrated a highly
stretchable conductor, highly transparent touch panels, stretchable heaters,
flexible fuel cells, flexible solar cells, stretchable nanogenerator etc. This is just a
very tiny fraction of application area of our works. We expect our approach can be
applied to huge range of wearable electronics elements in flexible and stretchable
forms and ultimately to all future electronics. Therefore, this research results
have a great ripple effect on various future electronics development and will be
sustainably studied. Considering the huge impact, originality and advantages of
our research results, this paper will provide basic research results and becomes a
classical reference for future wearable electronics field.
Biography
Seung Hwan Ko is a Professor in Applied Nano and Thermal
Science Lab, Mechanical Engineering Department Seoul
National University, Korea. Before joining Seoul National
University, hewas a Faculty at KAIST, Korea. He received his PhD
degree in Mechanical Engineering from UC Berkeley in 2006.
He worked as a Researcher at Lawrence Berkeley National
Lab until 2009. His research interest is Laser Assisted Nano/
Micro Fabrication process development, laser-nanomaterial
interaction, low temperature process development for flexible,
stretchable and wearable electronics, and crack assisted
nanomanufacturing.
maxko@snu.ac.krSelective laser processing of metal
nanomaterials for flexible and
stretchable electronics applications
Seung Hwan Ko
Seoul National University, Republic of Korea
Seung Hwan Ko, Nano Res Appl Volume:4
DOI: 10.21767/2471-9838-C6-024