Insertion of (1 micrometer) aerosols in pores. 細孔内への1μmエアロゾルの導入 (Award.受賞)

2015 June:
Best Poster Award at 9th Asian Aerosol Conference

Insertion of colloidal particles in the pores of a honeycomb structure via an aerosol route (気中に分散した液中微粒子のハニカム型多孔質体細孔内への沈着)

K. Kusdianto, M. Gen, M. Tsukada, W. Lenggoro* (*Corresponding author)

この研究のきっかけは、大気中に浮遊した微粒子が植物の葉の気孔に「詰まる」現象に着目した時。粒子径との気孔のサイズとの関係やその輸送の推進力について仮説が必要でした。大気中の微粒子の輸送において、私たちは「静電気力」も大事な推進力であることを提案しています。

A spray-based gas-phase method was proposed to insert presynthesized particles into a honeycomb structure. The fabricated structure, based on anodic aluminum oxide (AAO), had pores with an average diameter of 5.5 μm. When the structure was conductively coated and connected with a negative voltage, the positively charged （～1 μm） particles were located deep inside the pore canal （with a depth up to 130 μm） of the structure. Numerical simulations also showed that the electrostatic effect is the main driving force for inserting the particles.