Shinjiro Umezu Lab., Waseda University Garduste school
Fabrication of Grooves on Gelatin Film Utilizing Micro-Electrical Discharge Machining (micro-EDM)
Takayuki Tamura (1,*) , Ryu-ichiro Tanaka (1) , and Shinjiro Umezu (2)
(1) Department of Modern Mechanical Engineering, Waseda University Graduate School,3-4-1 Okubo Shinjuku Tokyo, JAPAN
(2) Department of Modern Mechanical Engineering, Waseda University Undergraduate School,
3-4-1 Okubo Shinjuku Tokyo, JAPAN
Biofabrication is an important research field, and one type of biomaterial is gelatin.
Gelatin is a material used in various forms such as gel and film. When an external force is applied to a gelatin film with some micro grooves, the film is considered to deform in a direction different from that without a groove. In this research, experiments were conducted with the objective of making micro grooves in gelatin film utilizing Micro-Electrical Discharge Machining (micro-EDM) .The method of the experiment is as follows.
Prepare a solution of 10 g of gelatin dissolved in 100 mL of water. Drop 5 mL of this solution on a PTFE plate and spread it. When this is placed at 60 % humidity for 48 hours,moisture disappears and a film can be produced. However, gelatin film without moisture does not pass electricity and micro-EDM cannot be utilized. Therefore, the electrode was pierced into a gelatin gel which was placed for 20 hours and part of the moisture was evaporated, and micro-EDM was carried out as shown in Fig.1. After drying gelatin gel for more than 20 hours,Grooves shown in Fig.2 were observed. A groove shown in Fig.2 (a) was fabricated without using silicone oil. A lot of gelatin melted due to the heat of the spark, and a thick groove was made. When silicone oil is applied to the surface of gelatin, heat is dispersed and a narrow groove can be formed as shown in Fig.2 (b). By this method, it became possible to fabricate gelatin films having micro grooves.
Born in Japan
Department of Modern Mechanical Engineering, Waseda University Graduate
School 2018-Department of Modern Mechanical Engineering, Waseda University
Undergraduate School 2014-2018
Academic lecture meeting, Materials Science Society of Japan, 2018.Information, Intelligence and Precision Equipment Division lecture meeting,The Japan Society of Mechanical Engineers, 2018.
Waseda University since 1882 in Tokyo, Japan
Shinjiro Umezu Lab. since 2014
The main research content is micro/nano processing.