Fabrication of a three-dimensional insect-wing model by micromolding of thermosetting resin with a thin elastmeric mold
Fabrication of a three-dimensional insect-wing model by micromolding of thermosetting resin with a thin elastmeric mold
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DOI：
10.1088/0960-1317/17/12/014
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发表时间：
2007-12-01
影响因子：
2.3
通讯作者：
Shimoyama, Isao
中科院分区：
文献类型：
--
作者：
Tanaka, Hiroto;Matsumoto, Kiyoshi;Shimoyama, Isao
为了研究昆虫飞行，开发了一种利用薄型聚二甲基硅氧烷(PDMS)模具制造三维(3D)形状的人工昆虫翅膀的低成本微模塑技术。机翼由三维聚亚安酯(PU)框架和对二甲苯-C膜组成。使用低粘度热固性PU树脂，该方法可以制造厚度为200微米、长度超过100毫米的机翼框架。为了为PU树脂创建3D模具通道，沿着刚性底部模具的曲面压制了一个薄的PDMS模具。在底部模具上沉积对二甲苯-C使模制产品与对二甲苯薄膜集成成为可能。为了估计PDMS模具在压制过程中的变形速度，将成型PU框架的高度和宽度与PDMS模具原始通道的高度和宽度进行了比较。结果表明，当通道长宽比为0.5~2.0时，PU骨架的高度和宽度均大于原通道的85%。研究还发现，PU框架的长度也与长宽比有关。此外，最大长度是横截面宽度的500多倍。
For investigating insect flight, a low-cost micromolding technique using a thin polydimethylsiloxane (PDMS) mold to fabricate an artificial insect wing with a three-dimensional (3D) shape was developed. The wing consists of 3D polyurethane (PU) frames and a Parylene-C membrane. Using a low-viscosity thermosetting PU resin, this method can fabricate a wing frame with a thickness of 200 mu m and a length of more than 100 mm. To create a 3D mold channel for the PU resin, a thin PDMS mold was pressed along the curved surface of a rigid bottom mold. Depositing Parylene-C on the bottom mold made it possible to integrate the molded product with a Parylene film. To estimate the deformation rate of the PDMS mold during the pressing process, the height and width of the molded PU frames were compared with those of the original channels of the PDMS molds. It was found that both the height and width of the PU frame were more than 85% of those of the original channel when the aspect ratio of the channel ranged from 0.5 to 2.0. The length of the PU frame was also found to be related to the aspect ratio. Moreover, the maximum length was over 500 times bigger than the cross-sectional width.