Fabrication of low-cost mold and nanoimprint lithography using polystyrene nanosphere

Jeong, Gyoung Hwa; Park, J. K.; Lee, K. K.; Jang, Joo-Hee; Lee, C. H.; Kang, Hyeoksu; Yang, Cheol‐Woong; Suh, Su‐Jeong

doi:10.1016/j.mee.2009.05.022

Cited by 27 publications

(13 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, SU-8 was desirable for the purpose of this study because we propose using it as part of implantable micro devices. In this work, we prepared nanopatterned SU-8 surfaces with polystyrene (PS) nanoparticles by nanosphere lithography (NSL) [26,27] to investigate cellular activities on the nanoporous SU-8 substrate. PC12 cells (a rat pheochromocytoma cell line; ATCC, Manassas, VA, USA) were used to assess cell differentiation and cell migration on the nanopatterned and normal flat substrates.…”

Section: Introductionmentioning

confidence: 99%

SU-8-based nanoporous substrate for migration of neuronal cells

Kim

Yoo

Moon

et al. 2015

Microelectronic Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

SU-8-based nanoporous substrate for migration of neuronal cells

Kim

Yoo

Moon

et al. 2015

Microelectronic Engineering

View full text Add to dashboard Cite

“…We can apply the proposed procedure to the preparation of planar microprobes, as discussed in our previous work [17]. Therefore, the microprobes were prepared by conventional photolithography and the nanostructures on their surface were then realized by nanospheric lithography (NSL) [21,22]. In addition, a nanostructured surface can be patterned as desired simply by covering undesired areas with a thin layer of metal.…”

Section: Open Accessmentioning

confidence: 99%

An SU-8-based microprobe with a nanostructured surface enhances neuronal cell attachment and growth

Kim

Choi

2017

Micro and Nano Syst Lett

View full text Add to dashboard Cite

Microprobes are used to repair neuronal injury by recording electrical signals from neuronal cells around the surface of the device. Following implantation into the brain, the immune response results in formation of scar tissue around the microprobe. However, neurons must be in close proximity to the microprobe to enable signal recording. A common reason for failure of microprobes is impaired signal recording due to scar tissue, which is not related to the microprobe itself. Therefore, the device-cell interface must be improved to increase the number of neurons in contact with the surface. In this study, we developed nanostructured SU-8 microprobes to support neuronal growth. Nanostructures of 200 nm diameter and depth were applied to the surface of microprobes, and the attachment and neurite outgrowth of PC12 cells on the microprobes were evaluated. Neuronal attachment and neurite outgrowth on the nanostructured microprobes were significantly greater than those on non-nanostructured microprobes. The enhanced neuronal attachment and neurite outgrowth on the nanostructured microprobes occurred in the absence of an adhesive coating, such as poly-l-lysine, and so may be useful for implantable devices for long-term use. Therefore, nanostructured microprobes can be implanted without adhesive coating, which can cause problems in vivo over the long term.

show abstract

“…These molds are typically made of metals (e.g., nickel), glasses (e.g., soda-lime and fused silica), crystals (e.g., Si, sapphire, and quartz), or ceramics (e.g., Si 3 N 4 , SiC, and anodized aluminum oxide) [35,46] and are fabricated by either top-down lithographic techniques [14,47] or bottom-up methods such as self-assembly [48] followed by etching and/or metal deposition [49]. On the other hand, the imprinting of low viscous UV-curable resists can be performed with soft polymer molds that allow conformal contact with non-flat and large surfaces.…”

Section: Basic Nil Processesmentioning

confidence: 99%

Nanoimprint Lithography: Toward Functional Photonic Crystals

Lova

Soci

2015

Organic and Hybrid Photonic Crystals

View full text Add to dashboard Cite

In this chapter we review the use of nanoimprint lithography and its derivative soft-lithography techniques for the fabrication of functional photonic crystals. Nanoimprint is a viable, scalable, and cost-effective solution for large area patterning. While initially it relied primarily on pattern transfer from a rigid mold to a thermally softened polymer by embossing, in the last two decades the process evolved rapidly, giving rise to new technologies that allow direct imprint of functional materials such as conjugated polymers, metals, biological matter, and metal oxides. These advancements generated increasing interest in the use of nanoimprint lithography for the fabrication of photonic structures for light management in optoelectronic devices. After describing standard nanoimprint lithography and its derivative soft-lithography methods, we briefly discuss nanoimprint capabilities and prospects in photonic applications. In particular we review recent implementations of imprinted photonic structures for light management in organic light emitting diodes, solar cells, solid state lasers and sensors.

show abstract

Fabrication of low-cost mold and nanoimprint lithography using polystyrene nanosphere

Cited by 27 publications

References 15 publications

SU-8-based nanoporous substrate for migration of neuronal cells

SU-8-based nanoporous substrate for migration of neuronal cells

An SU-8-based microprobe with a nanostructured surface enhances neuronal cell attachment and growth

Nanoimprint Lithography: Toward Functional Photonic Crystals

Contact Info

Product

Resources

About