Abstract
An alternative method is developed to remove metal from a work piece by combining a digital lithography system with biomachining. The purpose of this system is to obtain extra advantages as compared to conventional micro-fabrication processes currently used in practice. The use of microorganisms as a cutting tool in biomachining can eliminate the use of hazardous chemical materials, and the target surface is not affected by heat as a result of machining. The proposed process has a low material removal rate, but with less energy consumption. The greatest advantage is that the tools used in biomachining can be cultured continuously; i.e., they are renewable. Theoretically, the resolution of biomachining can reach 1 um due to the size of the bacteria. To achieve selective material removal, we combine the biomachining process with a polymer mask generated by a digital lithography (DL) system. In order to minimize errors and noise, the DL system was constructed by choosing robust and commonly available devices for most of the sub-tasks. This construction then can bring projected image onto work piece surface on fully controlled.
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Agung Shamsuddin Saragih received the B. Eng. degree from the University of Indonesia and the M.S. Eng. degree from Yeungnam University, Korea. His research interests include non-traditional manufacturing methods and microfabrication.
Tae Jo Ko is a Professor of Mechanical Engineering at Yeungnam University, South Korea. He received the bachelor’s and master’s degrees from Pusan National University, Korea, and the Ph.D. degree in mechanical engineering from POSTECH, Korea. His research interests include machine tools, metal cutting, and non-traditional machining. His current research interests include surface texturing using metal cutting, grinding, and bio-machining.
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Saragih, A.S., Ko, T.J. Development of digital lithography masking method with focusing mechanism for fabrication of micro-feature on biomachining process. J Mech Sci Technol 27, 3017–3022 (2013). https://doi.org/10.1007/s12206-013-0819-y
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DOI: https://doi.org/10.1007/s12206-013-0819-y