Dynamics of flow in albumin solution treated by low-temperature atmospheric pressure helium plasma jet
Tetsuji Shimizu,
Hiromasa Yamada,
Masanori Fujiwara,
Susumu Kato,
Yuzuru Ikehara,
Hajime Sakakita
Affiliations
Tetsuji Shimizu
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Hiromasa Yamada
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Masanori Fujiwara
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Susumu Kato
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Yuzuru Ikehara
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Hajime Sakakita
Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
Dynamics of albumin agglomeration and dissolution induced by a helium plasma jet using the Schlieren visualization technique were demonstrated. The Schlieren technique enabled us to visualize the plasma-induced agglomeration of albumin on the albumin solution and dissolution from the agglomerate. Through the dissolution, a high-density albumin region moved downward, forming downward flows. During the plasma treatment, the downward flows were observed with a flow velocity of around 0.2 mm/s, while the flow velocity was 0.7 mm/s–0.9 mm/s without the plasma treatment. It was found that the plasma treatment decelerates the downward flows.
