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Kim, Taesung
Microfluidics & Nanomechatronics Lab (μFNM)
Research Interests
  • Microfluidics & Nanofluidics
  • Nanoscale Transport Phenomena
  • MEMS & BioMEMS
  • Nanofabrication & Nanomechatronics

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Characterizing Self-assembly and Deposition Mechanisms of Nanoparticles in Inkjet-printed Evaporating Droplets

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dc.contributor.author Thokchom, Ashish Kumar ko
dc.contributor.author Zhou, Qitao ko
dc.contributor.author Kim, Dong-Joo ko
dc.contributor.author Ha, Dogyeong ko
dc.contributor.author Kim, Taesung ko
dc.date.available 2017-06-29T09:02:25Z -
dc.date.created 2017-06-29 ko
dc.date.issued 2017-11 ko
dc.identifier.citation SENSORS AND ACTUATORS B-CHEMICAL, v.252, pp.1063 - 1070 ko
dc.identifier.issn 0925-4005 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/22271 -
dc.description.abstract The self-assembly and deposition mechanisms of nanoparticles in droplets on a substrate are of significant importance in many inkjet printing-based industrial applications such as microelectronics, display systems, and paint manufacturing. However, a comprehensive investigation into the velocity field of fluid and its accompanying particle transport behavior in injected droplets undergoing immediate evaporation has not been conducted. In this study, we describe the underlying mechanisms of the self-assembly and deposition behavior of nanoparticles in inkjet-printed, evaporating droplets by visualizing the internal fluid flows. We additionally characterize the relationship between the internal fluid flows and nanoparticle patterns by changing not only the wettability and temperature of the substrate, but also the chemical composition of nanoparticle suspensions. We verify that Marangoni flow generated on a hydrophobic PDMS substrate with a contact angle (CA) of >90° helps the formation of dome-shaped nanoparticle structures, while radially outward flow generated on a hydrophilic glass substrate with a CA of <10° produces either mono-layered and flat, or ring-shaped nanoparticle structures, depending on the number density of the suspension. The presented characterization results provide not only valuable mechanistic insights, but also practical guidelines for inkjet printing-based nanoparticle applications. ko
dc.language 영어 ko
dc.publisher ELSEVIER SCIENCE SA ko
dc.title Characterizing Self-assembly and Deposition Mechanisms of Nanoparticles in Inkjet-printed Evaporating Droplets ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85021099432 ko
dc.identifier.wosid 000408277500126 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.snb.2017.06.045 ko
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0925400517310651 ko
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