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光回折の消滅現象を利用したトライボ分子膜のマイクロ流動計測に関する研究

利用光学衍射湮没现象进行摩擦分子薄膜微流控测量研究

基本信息

批准号：
13875032
负责人：
三矢保永
金额：
$ 1.47万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Exploratory Research
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

多数の微小な円周溝をもつ表面において,光回折が消滅する現象を利用してPFPE系潤滑剤の微小液滴の表面流動特性を計測する方法の有用性が確認できたので,今期には,溝付表面上の表面流動における溝深さと潤滑剤の分子量・極性基に着目して,これらをパラメータにして実験を行った.また,シミュレーションにより分子量の影響が相対的に評価できるように,Isingモデルに基づくモンテカルロ(MC)法を拡張して,その有効性を確認した.結果をまとめると以下のとおりである.(1)溝付面として2種類の市販のCD(ポリカーボネート)の未記録面を,また潤滑剤として分子量の異なる無極性PFPE(分子量分布4000〜13000g/mol)と極性PFPE(分子量4000g/mol)を用いて,溝に平行方向の表面流動を実測し,分子量の増大や極性基の存在によって,表面流動が減速することを明らかにした.(2)表面流動距離と経過時間との関係より,表面流動特性は,表面流動距離が時間に比例する前期領域と,表面流動距離が時間の平方根に比例する後期領域に明瞭に別けられ,分子量の増大とともに前期領域が短くなる現象を観測した.(3)溝に平行な方向への拡散は,溝深さが大きいほうが速くなり,とくに分子量の大きい潤滑剤や極性基のもつ潤滑剤では,この加速効果が大きくなる.(4)溝の効果は,表面エネルギーを増加させることと等価であり,溝が深くなるにしたがつて,表面エネルギーが大きいシリコンやダイヤモンドライクカーボンの表面流動特性に近づく傾向がある.(5)Isingモデルに基づくモンテカルロ法を拡張して,溝内部における表面流動に及ぼす分子量の影響を定量的に計算するための定式化を導入した.実験結果と比較して,表面力と分子間力の結合係数の比を適正に選択すれば,本シミュレーションにより,分子量,溝の効果を定性的に予測できる.

Most of the micrographs show that the surface is very sensitive, and the light analysis method is used to determine the surface flow characteristics of droplets on the surface of the PFPE system. In this issue, the surface flow properties are measured, and the molecular weight of the slides is determined. The molecular weight of the molecular weight is different from that of the molecular weight. The molecular weight is different from that of the molecular weight. The molecular weight of the molecular weight is different from that of the molecular weight, the molecular weight of the molecular weight is different from that of the molecular weight, the molecular weight of the molecular weight is different, the molecular weight of the molecular weight is different, the molecular weight of the molecular weight is different, the molecular weight is different. Results the results show that there are significant differences in the following results. (1) the price of noodles is similar to that of the market CD, the molecular weight is not sensitive to the molecular weight, the molecular weight distribution 4000~13000g/mol (molecular weight distribution 4000~13000g/mol), the molecular weight PFPE (molecular weight 4000g/mol) is used, and the surface flow in the parallel direction is sensitive. There is a correlation between the molecular weight and the molecular weight, and the surface flow is sensitive to the temperature. (2) the distance between the movement of the surface flow and the distance between the temperature and the temperature, the characteristic of the surface flow, the ratio of the surface flow to the critical time, and the square root of the ratio between the surface flow and the square root of the surface flow in the future. The molecular weight is large, and the previous field is short. (3) the parallel direction is scattered, the depth is large, the speed is fast, the molecular weight is large, the sex base is slippery, the acceleration is large. (4) the fruit is big. (4) the fruit, the surface, and so on. In this paper, the results show that the surface flow characteristics of the surface flow are very sensitive. (5) the surface flow characteristics of Ising are sensitive to each other. (5) the results show that the surface flow characteristics of the surface flow characteristics are different from each other. (5) the surface flow characteristics of the surface flow, the surface flow and the molecular weight of the surface flow are determined by the method. The results show that the molecular weight, molecular weight, molecular weight and molecular weight were selected.