Fabrication of highly ordered pore array in anodic aluminum oxide

Hwang, Sun-Kyu; Jeong, Soo‐Hwan; Hwang, Hee-Young; Lee, Ok Joo; Lee, Kun‐Hong

doi:10.1007/bf02697158

Cited by 135 publications

(66 citation statements)

References 21 publications

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“…The UV nano embossing process with the reusable AAO mold enables us to fabricate the polymer nanostructured film which is a natural dry adhesive prototype in mass production. It might be noted that the AAO mold, fabricated by a two-step anodization process for an aluminum substrate in this study, has highly ordered straight porous alumina layer on the sheet (Li et al 1998;Hwang et al 2002). Furthermore, the diameter and depth of the nanopores can be simply adjustable by varying the electrochemical parameters.…”

Section: Introductionmentioning

confidence: 95%

Replication of high-aspect-ratio nanopillar array for biomimetic gecko foot-hair prototype by UV nano embossing with anodic aluminum oxide mold

Kim

Lee

et al. 2006

Microsyst Technol

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In this paper, we present a simple and costeffective replication method of high-aspect-ratio polymer nanopillar array as a biomimetic gecko's foot hair prototype. A UV nano embossing process was applied for the replication of polymer nanopillar arrays. Highly ordered straight nanoporous AAO (anodic aluminum oxide) templates were utilized as reusable master molds. Densely arranged high-aspect-ratio nanopillar arrays have been successfully fabricated by means of the UV nano embossing process with the AAO mold. Pull-off force measurements were carried out to characterize the adhesive force of the replicated nanopillar arrays on the polymer substrates based on the force-distance curves obtained from the atomic force microscope (AFM) with a modified AFM cantilever. The force measurement results showed that the larger diameter and the taller height of the nanopillars result in the larger adhesive force.

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Section: Introductionmentioning

confidence: 95%

Replication of high-aspect-ratio nanopillar array for biomimetic gecko foot-hair prototype by UV nano embossing with anodic aluminum oxide mold

Kim

Lee

et al. 2006

Microsyst Technol

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“…Different bicarbonate-blasted Al foils were anodized for 0, 2, 3 and 4 min in a 0.3 M oxalic acid solution at a constant voltage of 40 V, using a computer-interfaced power supply (Digital Electronics Co., DRP-92001DUS). Hwang et al, have experimentally proven that the length of pores is proportional to the anodizing time [27]. They showed that the relationship between the pore length and the anodizing time is represented by: l ¼ À147:75 þ 125:53t;…”

Section: Preparation Of Bicarbonate-blasted Porous Alumina Template Amentioning

confidence: 98%

Artificial lotus leaf structures made by blasting with sodium bicarbonate

Lee

Kim

Hwang

2011

Current Applied Physics

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“…In this regard, Lee et al proposed to utilize an anodic aluminium oxide (AAO)--of which processes are rather simple, flexible and cost-effective--for the NIL process , and particularly nano pillar array was fabricated to be used as a NIL mould. By using the AAO process, one can obtain a close-packed array of nano dimple or pore structures with various dimensions, thus attracting much interest for various applications (Hwang et al 2002;Masuda 2005). …”

Section: Introductionmentioning

confidence: 99%

Nickel stamp fabrication and hot embossing for mass-production of micro/nano combined structures using anodic aluminum oxide

et al. 2008

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Recently, ''micro/nano combined structure'' has attracted many researchers' attentions due to its high potential in various research fields and applications such as biomimetics, tissue engineering, micro systems for biochemical analysis and so forth. The present paper proposes a simple and promising method for mass-production of the micro/nano combined structure, in particular, nano dimple array with micro structures with cost-effective procedures. Three major procedures of (a) master template fabrication; (b) nickel electroforming onto the master template; (c) replication by hot embossing process, are employed: the master template is fabricated by utilizing an anodic aluminium oxide (AAO) process and UV lithography technique; nickel stamp is then obtained by means of electroforming onto the master template; finally, micro/ nano combined structures are moulded on a polymethyl methacrylate (PMMA) substrate using the nickel stamp via hot embossing. So replicated micro/nano combined structures turns out to be quite successful according to experimental observation via scanning electron microscope (SEM) and atomic force microscope (AFM).

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Fabrication of highly ordered pore array in anodic aluminum oxide

Cited by 135 publications

References 21 publications

Replication of high-aspect-ratio nanopillar array for biomimetic gecko foot-hair prototype by UV nano embossing with anodic aluminum oxide mold

Replication of high-aspect-ratio nanopillar array for biomimetic gecko foot-hair prototype by UV nano embossing with anodic aluminum oxide mold

Artificial lotus leaf structures made by blasting with sodium bicarbonate

Nickel stamp fabrication and hot embossing for mass-production of micro/nano combined structures using anodic aluminum oxide

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