Fabrication of Nano-Micro Hybrid Structures by Replication and Surface Treatment of Nanowires

Jeong, Yeonho; Shin, Seunghang; Choi, Heekyung; Kim, Seonjun; Kim, Jihoon; Kwon, Sin; Kim, Kwang-Young; Lee, Seung–Hyun; Jung, Yoon-Gyo; Cho, Young Tae

doi:10.3390/cryst7070215

Cited by 7 publications

(5 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The size and orientation of this dimple structure is irregular; however, this phenomenon occurred throughout the entire surface of the specimen. The surface of the specimen became smooth after it was subjected to the UV ozone treatment process 36 ( Figure 6 and Figure 7). This is also why the contact angle of the surface increased after the UV ozone treatment process.…”

Section: Representative Resultsmentioning

confidence: 99%

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Jeong¹,

Kim²,

Fang³

et al. 2018

JoVE

Self Cite

View full text Add to dashboard Cite

Multiscale surface structures have attracted increasing interest owing to several potential applications in surface devices. However, an existing challenge in the field is the fabrication of hybrid micro-nano structures using a facile, cost-effective, and high-throughput method. To overcome these challenges, this paper proposes a protocol to fabricate multiscale structures using only an imprint process with an anodic aluminum oxide (AAO) filter and an evaporative self-aggregation process of nanofibers. Unlike previous attempts that have aimed to straighten nanofibers, we demonstrate a unique fabrication method for multiscale aggregated nanofibers with high aspect ratios. Furthermore, the surface morphology and wettability of these structures on various liquids were investigated to facilitate their use in multifunctional surfaces.

show abstract

Section: Representative Resultsmentioning

confidence: 99%

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Jeong¹,

Kim²,

Fang³

et al. 2018

JoVE

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 3c shows the adhesion force between blanket and cliché (or substrate). Considering the relationship among the adhesive forces of the blanket, cliché, and PET substrate, we modified the surface energy of the cliché and PET substrate by conducting a UV–ozone treatment, [ 59–63 ] which imparted a higher adhesion compared with various elastomeric blanket materials (Figure 2). Figure 3b shows the stretch of blanket using uniaxial system based on Figure 3a.…”

Section: Methodsmentioning

confidence: 99%

Tunable Reverse Offset Printing with a Stretchable Blanket for Fabricating Flexible Printed Electronics

2021

Self Cite

View full text Add to dashboard Cite

Reverse offset printing (ROP) is receiving increasing attention as an emerging technology for printed electronics due to its rapid, environment‐friendly fabrication processes. A tunable ROP process is proposed by exploiting the controlled elastic deformation of a stretchable blanket. First, the flat elastomeric blanket is elastically stretched before coating with the printing ink. Next, Ag ink is coated on the surface of a supporting substrate and sequentially transferred to a prestrained elastomeric blanket. Second, the patterned cliché is rolled over the prestrained blanket surface by applying an optimized pressure for patterning. Finally, releasing the strain in the patterned elastomeric blanket leads to a pattern deformation on pitch and sizes. A decrease in the line width and pitch is demonstrated using a tunable ROP process with a stretchable blanket. This unique tunable printing process offers the capability of low‐cost fabrication of various microstructures from a single cliché using simple mechanical stretching and releasing.

show abstract

“…The material used for this process was octadecyltrichlorosilane (OTS). The OTS coating process was carried out by vapor deposition in which the wafer was placed in a beaker, and OTS solution was vaporized using a hot plate kept at a temperature of 120 • C for one hour [20]. The entire process was carried out in an N 2 atmosphere and the vaporized OTS was deposited on the master mold patterns.…”

Section: Fabrication Of Cliché Using Various Resinsmentioning

confidence: 99%

Printing Speed and Quality Enhancement by Controlling the Surface Energy of Cliché in Reverse Offset Printing

et al. 2017

Self Cite

View full text Add to dashboard Cite

Printed electronics is one of the emerging technologies owing to its low cost and productivity. Recently, many researchers tried to adapt printing technology to the fabrication of fine electronic patterns on flexible substrates, including the gate line of thin film transistors. In this study, we fabricated a flexible cliché using the nanoimprint process and used it in reverse offset printing. Then, we analyzed the effect of the surface energy of the imprinted cliché on process parameters, such as printing speed and rolling direction. We showed that the productivity of the process and quality of printed pattern can be considerably enhanced by controlling the surface energy of the cliché. When a flexible cliché is manufactured using a resin with a surface energy considerably different from that of the blanket, the ink can be detached easily and fine patterns can be engraved successfully regardless of the pattern shape.

show abstract

Fabrication of Nano-Micro Hybrid Structures by Replication and Surface Treatment of Nanowires

Cited by 7 publications

References 47 publications

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces

Tunable Reverse Offset Printing with a Stretchable Blanket for Fabricating Flexible Printed Electronics

Printing Speed and Quality Enhancement by Controlling the Surface Energy of Cliché in Reverse Offset Printing

Contact Info

Product

Resources

About