Postech Academy-industry Foundation

Sang-Min Lee

Joon-Won Kim

Hyun-Chul Park

Kun-Hong Lee

Woon-Bong Hwang

Dong-Seob Kim

Dong-hyun Kim

Geun-Bae Lim

Seong-Ho Son

Dong-Hyun Kim

Il-Sin Bae

Duk-Hyun Choi

Chang-Woo Lee

Ji-Hoon Jeon

Tae-Chul Moon

The present invention relates to a method for manufacturing a solid body having a superhydrophobic surface structure formed by using a surface treatment of a metal body, a replication process, and a polymer sticking phenomenon to increase efficiency of fluid transfer and prevent foreign materials from being accumulated in the tube, and a superhydrophobic fluid transfer tube using the method. The superhydrophobic fluid transfer tube includes a fluid guider and a solid body provided on a fluid contact surface of the fluid guider and has micrometer-scaled unevenness and nanometer-scaled protrusions. In the method, a plurality of nanometer-scaled holes are formed on a surface of a metal body through an anodizing process, a replica is formed by immersing the metal body provided with the nanometer-scaled holes in a non-wetting polymer material and solidifying the non-wetting polymer material, the solid body having the superhydrophobic surface is formed by removing the metal body and an anode oxide from the replica, and the solid body is provided to a fluid contact surface of a fluid guider for guiding a fluid.

Method for fabricating solid body having superhydrophobic surface structure and superhydrophobic tube using the same method

A pneumatic dispenser () according to the present invention includes: a first plate () including a liquid supply unit (), a first chamber (C) connected to the liquid supply unit (), and a liquid discharge unit () connected to the first chamber (C), a flexible membrane () at least installed on the first chamber (C) of the first plate () and establishing one side of the first chamber (C), a second plate () including a second chamber (C) at a side opposite to the first chamber (C) while facing the first plate () with the flexible membrane () interposed there between and a bump () formed by protruding the liquid supply unit () toward the flexible membrane ().

Pneumatic dispenser

The present invention relates to a three-dimensional structure manufacturing method for performing surface treatment processes, and a replication step to provide hydrophobicity on an external surface of the three-dimensional structure. In the manufacturing method, the hydrophobicity may be provided to the external surface of the three-dimensional structure, a high cost device required in the conventional MEMS process is not used, the manufacturing cost is reduced, and the manufacturing process is simplified. In addition, it has been difficult to provide the hydrophobicity on an external surface of a three-dimensional structure having a large surface due to a spatial limitation, but in the exemplary embodiment of the present invention, the hydrophobicity may be provided to the external surface of the three-dimensional structure having a large surface, such as a torpedo, a submarine, a ship, and a vehicle, without the spatial limitation.

Manufacturing method of 3D shape structure having hydrophobic external surface

The present invention relates to a manufacturing method of a three dimensional structure having a hydrophobic inner surface. The manufacturing method includes anodizing a three dimensional metal member and forming fine holes on an external surface of the metal member, forming a replica by coating a non-wetting polymer material on the outer surface of the metal member and forming the non-wetting polymer material to be a replication structure corresponding to the fine holes of the metal member, forming an exterior by surrounding the replication structure with an exterior forming material, and etching the metal member and eliminating the metal member from the replication structure and the exterior forming material.

Manufacturing method of 3D shape structure having hydrophobic inner surface

Growing community of inventors

Pohang, South Korea

Sang-Min Lee