Multiscale Transfer Printing into Recessed Microwells and on Curved Surfaces via Hierarchical Perfluoropolyether Stamps

Park, Hyunchul; Cho, Hyesung; Kim, Junsoo; Bang, Jung Won; Seo, Soonmin; Rahmawan, Yudi; Lee, Deuk Yeon; Suh, Kune Y.

doi:10.1002/smll.201300772

Cited by 33 publications

(24 citation statements)

References 34 publications

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“…The viscoelastic state of the PDMS substrates was a key requirement for the formation of concave microstructures, as shown in Figure . Through quantitative assessment of Fourier transform infrared (FTIR) characterization of the PDMS precursor, the dependence of the precured degree of PDMS surfaces on the precuring time was determined (Figure S5, Supporting Information) . With the increase of the precured degree, the PDMS surface changed from viscous liquid to viscoelastic state and finally to solid state (Figure c), which led to three typical scenarios of the printed dot formation (Figure a,b).…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Patterned Concave Microstructures by Inkjet Imprinting

Bao

Jiang

et al. 2015

Adv Funct Materials

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Concave microstructures such as microwells and microgrooves are widely utilized in fields such as biochips, microfluidics, and functional devices. Previously, concave microstructure fabrication was mostly based on laser etching or lithography which is either costly or of multisteps. The inkjet etching method is a direct structuring technique, but limited by its inherent transverse ink diffusion that leads to low feature resolution. Nanoimprint lithography can reach submicro and even nano ranges, whereas an elaborate template is needed. Thus, it is still a challenge to realize controllable fabrication of concave microstructures in large areas with high efficiency and resolution. Here, a template‐free strategy to fabricate concave microstructures with high resolution by inkjet imprinting is provided. In this method, a sacrificial ink is inkjet‐printed onto a precured viscoelastic surface and imprints its shapes to construct concave microstructures. The morphology of the microstructures could be adjusted by controlling the interaction between the two immiscible phases. The microwells/microgrooves could be used to pattern single cells and functional materials such as optical, electronic, and magnetic nanoparticles. These results will open a new pathway to fabricate concave microstructures and broaden their applications in various functional devices.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Patterned Concave Microstructures by Inkjet Imprinting

Bao

Jiang

et al. 2015

Adv Funct Materials

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“…However, these materials need complicated fabrication with high cost for surface modification . It is desirable to facilitate manufacturing the surface textures with excellent cooling performance by adopting new material with superior processability in terms of cost, formability, and durability …”

Section: Methodsmentioning

confidence: 99%

Enhanced Boiling Heat Transfer Performance on Microstructured Silicate Glass Surfaces Derived from Inorganic Polymer‐Based Soft Lithography

Noh

Kim

et al. 2016

Adv Materials Inter

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Section: Techniques For Fabrication Of Deformable Curved Electronicsmentioning

confidence: 99%

“…As shown in Figure 2c, a single layer perfluoropolymer (PFPE) used one‐step multiscale transfer printing to obtain multiscale metallic patterns on smooth and patterned substrates. [ 72 ] Multistructured electronics could be transferred in one‐step through only one designed stamp.…”

Section: Techniques For Fabrication Of Deformable Curved Electronicsmentioning

confidence: 99%

Fabrication Techniques for Curved Electronics on Arbitrary Surfaces

Tian

Luo

et al. 2020

Adv Materials Technologies

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Curved electronics, which are better coordinated and blended with the natural world due to the characteristics of large contact area, high space adaptability, etc., have been widely used in a quantity of areas ranging from conformal curved antennas and sensors in detection and measurement, to artificial smart skin of aerospace. Recent developments in curved electronics have made an increasing progress to the historic drawbacks of conventional planar electronics, however significant challenges still exist. Here, the main kinds of conformal fabrication technologies, including transfer printing, assembly techniques, curved lithography, conformal inkjet printing, 3D printing, and laser direct writing, are reviewed to realize manufacturing deformable/undeformable electronics on curved or arbitrary surfaces. The processes and features of each technology are comprehensively summarized together with their progress and potential values. Finally, the challenges and opportunities for fabricating conformal electronics on arbitrary surfaces are also discussed.

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Multiscale Transfer Printing into Recessed Microwells and on Curved Surfaces via Hierarchical Perfluoropolyether Stamps

Cited by 33 publications

References 34 publications

Fabrication of Patterned Concave Microstructures by Inkjet Imprinting

Fabrication of Patterned Concave Microstructures by Inkjet Imprinting

Enhanced Boiling Heat Transfer Performance on Microstructured Silicate Glass Surfaces Derived from Inorganic Polymer‐Based Soft Lithography

Fabrication Techniques for Curved Electronics on Arbitrary Surfaces

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