Engineering surface and development of a new DNA micro array chip

Yoshino, Masahiko; Matsumura, Takashi; Umehara, Noritsugu; Akagami, Yoichi; Aravindan, S.; Ohno, Takenori

doi:10.1016/j.wear.2005.04.028

Cited by 56 publications

(32 citation statements)

References 34 publications

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“…The ability to deposit desired liquid patterns with high accuracy and repeatability is particularly useful for liquid-based printing applications 25 , such as bio-microarrays for protein and DNA sequencing 26 , inkjet printing 27 , multicolour polymer-based light-emitting diode displays 28 , liquid metal printing 3 and solder droplet printing 2 . In this work, we show complete control of droplet contact area shapes ranging from squares, rectangles, hexagons, octagons, to dodecagons via the design of the structure or chemical heterogeneity on the surface.…”

mentioning

confidence: 99%

High-resolution liquid patterns via three-dimensional droplet shape control

Raj

Adera

Enright³

et al. 2014

Nat Commun

104

105

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Understanding liquid dynamics on surfaces can provide insight into nature's design and enable fine manipulation capability in biological, manufacturing, microfluidic and thermal management applications. Of particular interest is the ability to control the shape of the droplet contact area on the surface, which is typically circular on a smooth homogeneous surface. Here, we show the ability to tailor various droplet contact area shapes ranging from squares, rectangles, hexagons, octagons, to dodecagons via the design of the structure or chemical heterogeneity on the surface. We simultaneously obtain the necessary physical insights to develop a universal model for the three-dimensional droplet shape by characterizing the droplet side and top profiles. Furthermore, arrays of droplets with controlled shapes and high spatial resolution can be achieved using this approach. This liquid-based patterning strategy promises low-cost fabrication of integrated circuits, conductive patterns and bio-microarrays for high-density information storage and miniaturized biochips and biosensors, among others.

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mentioning

confidence: 99%

High-resolution liquid patterns via three-dimensional droplet shape control

Raj

Adera

Enright³

et al. 2014

Nat Commun

104

105

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“…The wetting properties of an FII-treated ABS were investigated by measuring the contact angle of water droplets on its surface. An environmental scanning electron microscope (E-SEM) was used to measure the contact angle of water at a micro-scale (Yoshino et al 2006). We introduced water vapor into the chamber of the E-SEM, which caused the micrometer-sized water droplets to condense, and then we calculated the contact angle from SEM images.…”

Section: Fluorine-ion Implantation Resultsmentioning

confidence: 99%

Fluorine-ion-implanted air-bearing surface for low-friction head–disk interface

Shimizu

Umehara

2009

Microsyst Technol

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With the aim of reducing the lubricant-slider interaction by reducing slider surface energy, we fabricated several types of sliders with fluorine-ion-implanted (FII) air-bearing surfaces by using different levels of acceleration voltage for FII. With a low acceleration voltage, the fluorine-ions tended to be concentrated at shallower depths from the slider surface, and the contact angle of the water droplets was greater. The FII-treated slider showed lower touch-down height, which implies an improvement of slider stability at near-contact regime. The polar force component of the surface energy of FII-treated slider surface showed a good correlation with a thermally flying-height control heater power at touch-down. It is estimated that FII-treatment can reduce the polar force component of the surface energy and reduce the slider-lubricant interaction, resulting in a reduction of slider touch-down height.

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“…The achievable minimum feature size of micro-EDM is around 2 μm [26]. Micro-forming creates different surface texturing at the micron level by plastically deforming the workpiece material [27][28][29]. Table 1 summarizes the abovementioned surface texturing techniques and compares their typical feature sizes and cost for mass-production as seen micro-forming technology has the potential of economically and effectively generating micro-surface textures over a large surface area.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of adhesion strength by micro-rolling-based surface texturing

Fan

et al. 2015

Int J Adv Manuf Technol

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Structural adhesive bonding technology is widely utilized in various applications in modern automotive and aviation industries. Finding new techniques to enhance adhesion strength between bonded components in a more economical and environmental-friendly way is becoming an important issue. In this paper, a novel micro-surface texturing method by using a developed deformation-based micro-rolling system has been applied to modify surface conditions of a sheet metal in order to increase metal-to-metal adhesion strength. Additionally, different surface texturing patterns, such as microchannel arrays and grid pattern, are produced by single-pass or two-pass micro-rolling strategies. The effect of these texture patterns on adhesion strength is studied through single-lapjoint shear strength test. Results indicate that surface with micro-textures are able to achieve noticeable improvement in adhesion strength.

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Engineering surface and development of a new DNA micro array chip

Cited by 56 publications

References 34 publications

High-resolution liquid patterns via three-dimensional droplet shape control

High-resolution liquid patterns via three-dimensional droplet shape control

Fluorine-ion-implanted air-bearing surface for low-friction head–disk interface

Enhancement of adhesion strength by micro-rolling-based surface texturing

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