微接触印刷

Rapid and mask-less laser-processing technique for the fabrication of microstructures in polydimethylsiloxane

ty10086 提交于 周四, 08/26/2021 - 13:33
Abstract(#br)We report a rapid laser-based method for structuring polydimethylsiloxane (PDMS) on the micron-scale. This mask-less method uses a digital multi-mirror device as a spatial light modulator to produce a given spatial intensity pattern to create arbitrarily shaped structures via either ablation or multi-photon photo-polymerisation in a master substrate, which is subsequently used to cast the complementary patterns in PDMS. This patterned PDMS mould was then used for micro-contact printing of ink and biological molecules.

Silver localization on polyimide using microcontact printing and electroless metallization

ty10086 提交于 周四, 08/26/2021 - 13:33
Abstract(#br)Silver localization is obtained on polyimide Kapton ® HN (PI) in step by step processes combining surface treatments (chemical and plasma), microcontact printing (μCP) and electroless metal deposition. There processes are developed in order to obtain silver patterns onto flexible polymer surfaces at the micro and sub-micro scale. Patterns of silver dots or, at the opposite, of holes in silver layer, were obtained using the same PDMS polydimethylsiloxane (PDMS) stamp (positive/negative technology). Processes are based on the same first step, i.e.

可变形聚二甲基硅氧烷片上六方微图案蛋白质特征上牵引力的一种新的量化方法

ty10086 提交于 周四, 08/26/2021 - 13:14
摘要细胞牵引力的定量方法很多,包括牵引力显微镜和微加工的柱阵列。然而,这些方法都存在局限性,包括需要去除细胞来确定未被选中的颗粒位置,以及无法分别量化细胞骨架刚度较低的细胞所受的力。这里我们提出了一种新颖的牵引力量化方法,消除了这两种局限性。通过使用六边形的微接触印刷蛋白质点图案、一种新的计算算法和聚二甲基硅氧烷( PDMS )共混物的薄表面,我们演示了一个系统:·在稳定且易于制造的均匀表面上量化细胞力。·利用六边形的蛋白质点图案和计算几何来量化细胞力,而不需要细胞去除。·在细胞骨架结构刚度较低的细胞上量化细胞力。

Front-side Texturing of Crystalline Silicon Solar Cell by Micro-contact Printing

ty10086 提交于 周四, 08/26/2021 - 12:50
Front-side Texturing of Crystalline Silicon Solar Cell by Micro-contact PrintingCrystalline silicon solar cell;Micro-contact printing;Self assembled monolayer;Inverted pyramid;Texturing;We give a textured front on silicon wafer for high-efficiency solar cells by using micro contact printing method which uses PDMS (polydimethylsiloxane) silicon rubber as a stamp and SAM (self assembled monolayer)s as an ink.

Self Assembled Patterns of Ag Using Hydrophobic and Hydrophilic Surface Characteristics of Glass

ty10086 提交于 周四, 08/26/2021 - 12:49
Self Assembled Patterns of Ag Using Hydrophobic and Hydrophilic Surface Characteristics of GlassMicro contact printing;Ag solution;Dip-coating;PDMS;OTS;Recently, the interest in lithography without photo exposure has been increased compare to the conventional photolithography in nano meter and micrometer size patterning area. We studied a self aligned dipping of Ag solution through micro contact printing (${\\mu}-CP$) with octadecyltrichlorosilane (OTS) treated polydimethylsiloxane (PDMS) soft mold. The OTS monolayer on the patterned PDMS was formed by dipping it into OTS solution.

Thermal-Controlled Frictional Behaviour of Nanopatterned Self-assembled Monolayers as Triboactive Surfaces

ty10086 提交于 周四, 08/26/2021 - 12:47
摘要\n摩擦是MEMS / NEMS能效性能的一个重要限制,但同时也是通过设计优化的摩擦电纳米发生器( TENG )来获取能量的一个巨大机会。因此,通过在MEMS表面接枝n-十八烷基三氯硅烷( OTS )的热敏周期性图案自组装膜,可以实时精确地控制摩擦行为。纳米图案目前用于限制磨损率而不改变摩擦行为。在本工作中,用显示梯形轮廓的聚二甲基硅氧烷( PDMS )印章,用微接触印刷( μ CP \\文档类[ 12pt ] {极小} \\使用包装{ amsmath } \\使用包装{ isysym } \\使用包装{ amsfonts } \\使用包装{ amssymb } \\使用包装{ amsbsy } \\使用包装{ Mathrsfs } \\使用包装{ upgreek } \\设置长度{奇边} { -69pt \\开始{文档} $$\\upmu \\hbox {CP}$$ \\结束{文档} )来创建图案。因此,通过在软PDMS印章上施加控制的法向载荷,可以连续地改变图案周期性,然后从不连续到伪连续进行优化。利用单安培和多安培纳米摩擦仪对这些纳米图案进行了多尺度摩擦学研究。侧向力显微镜( LFM )提供了各花纹组分的个体摩擦行为,而多安培纳米摩擦学仪则给出了花纹随温度变化而产生的摩擦行为。