Quantitative measurement of ink-blanket adhesion for contact transfer printing inks

Lee, A-Ram; Kim, In-Young; Kim, Kwang-Young; Nam, Su-Yong; Choi, Yun‐Jaie

doi:10.1007/s12541-015-0019-z

Cited by 10 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the tunable mechanical properties of PDMS enable a conformal contact and prevent any mechanical damage to the clichés, which results in the common use of PDMS-based sheets as blankets. [53][54][55] In this study, we investigated the optimum blanket materials among different elastomeric materials, including three types of PDMS (Sylgard184, R16, RT-623) and silicon rubber (Ecoflex00-50). Consequently, we considered the stretchability and material transfer to implement a tunable ROP process.…”

Section: Materials and Tunable Rop Systemmentioning

confidence: 99%

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

2021

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

Section: Materials and Tunable Rop Systemmentioning

confidence: 99%

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

2021

View full text Add to dashboard Cite

show abstract

“…5(e)]. The adhesive force [77][78][79] and work of separation 77) of semidried layers from PDMS were measured using several methods.…”

Section: Printing Machinementioning

confidence: 99%

Recent advances in reverse offset printing: an emerging process for high-resolution printed electronics

Kusaka

Fukuda

Ushijima

2020

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Mechanisms, materials, and processes of high-resolution printing techniques dedicated to printed electronics are reviewed. Advanced printing methods, including reverse offset printing and adhesion contrast planography, use absorption of ink solvents by polydimethylsiloxane (PDMS) to semi-solidify inks before ink-transfer. The patterning principle transforms from wetting to adhesion and fracture; resolution problems encountered during the patterning of liquid inks (e.g. spreading, splitting, coalescence, bulges, and coffee ring shapes) can be avoided, and single-μm features can be achieved. After summarizing the fundamentals of reverse offset printing, details on the patterning mechanism and contact mechanics encountered during the process are shown together with the design concept of the ink formulation. Complementary processes for multilayered electronic devices (e.g. wet-on-wet for high-throughput production, buried electrode formation, taper formation, and vertical interconnections) and the prediction of pattern size integrity are presented.

show abstract

“…The shear strength at the contact interface is not considered for breaking contact in the simulation. The normal adhesion strength at the PDMS-substrate contact interface was tested using the method by Lee et al [30] as given in figure A2(b), where PDMS without ink film is in direct contact with the substrate of steel. Adhesion strength was measured at 0.1415 MPa in the normal direction.…”

Section: Appendix Finite Element Analysis To Simulate Contact Positio...mentioning

confidence: 99%

Distortion mechanism of patterning positions in the soft roller printing process for realizing large-area overlay printing

Kang¹,

Lee²,

Kim³

et al. 2020

J. Micromech. Microeng.

View full text Add to dashboard Cite

Soft roller printing techniques such as rolling mask soft lithography and offset printing are prominent as high-resolution, high-throughput patterning technologies. The overlay accuracy of soft roller printing becomes critical in large-area fabrications since many factors causing overlay errors tend to be proportional to the patterning area. In this study, the mechanism of overlay distortion was investigated in the soft roller printing process using both lab testing and finite element simulations. The overlay distortion is closely related to the deformation of PDMS in soft roller printing and it is key to investigate how PDMS is deformed under various disturbances from equipment and process. Two kinds of major disturbances, ‘nip motion error’ and ‘roundness error’, are defined and their effect on the overlay distortion is discussed. The methodology to improve overlay accuracy in the soft roller printing process is also presented and verified. For the nip motion error, the compensation method, in which the nip motion error is modeled based on the previous printed position errors and the modeled error is compensated by the alignment stage, are proposed. It is proven that high compressibility of cushioning can help to relieve the position errors caused by roundness errors by reducing the deformation of PDMS. Finally, printing position errors can be reduced to the level of a few micrometers when the overlay distortion mechanisms investigated in this study are well controlled.

show abstract

Quantitative measurement of ink-blanket adhesion for contact transfer printing inks

Cited by 10 publications

References 13 publications

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

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

Recent advances in reverse offset printing: an emerging process for high-resolution printed electronics

Distortion mechanism of patterning positions in the soft roller printing process for realizing large-area overlay printing

Contact Info

Product

Resources

About