http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
열방식 마이크로 임프린트 공정을 위한 고분자 재료의 수치적 모델링과 해석
란 슈하이(Shuhuai Lan),이수훈(Soo-Hun Lee),이혜진(Hye-Jin Lee),송정한(Jung-Han Song),성연욱(Yeon-Wook Sung),김무종(Moojong Kim),이문구(Moon G. Lee) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.10
The research on miniature devices based on non-silicon materials, in particular polymeric materials has been attracting more and more attention in the research field of the micro/nano fabrication in recent years. Lost of applications and many literatures have been reported. However, the study on the micro thermal imprint process of glassy polymer is still not systematic and inadequate. The aim of this research I to obtain a numerical material model for an amorphous glassy polymer, polycarbonate (PC), which can be used in finite element analysis (FEA) of the micro thermal imprint process near the glass transition temperature (Tg). An understanding of the deformation behavior of the PC specimens was acquired by performing tensile stress relaxation tests. The viscoelastic material model based on generalized Maxwell model was introduced for the material near Tg to establish the FE model based on the commercial FEA code ABAQUS/Standard with a suitable set of parameters obtained for this material model form the test data. As a result, the feasibility of the established viscoelastic model for PC near Tg was confirmed and this material model can be used in FE analysis for the prediction and improvement of the micro thermal imprint process for pattern replication.
Shuhuai Lan(란 슈하이),Hey-Jin Lee(이혜진),Hyoung-Wook Lee(이형욱),Jung-Han Song(송정한),Soo-Hun Lee(이수훈),Jun Ni(준니),Moon G. Lee(이문구) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.5
The aim of this research is to obtain a numerical material model for an amorphous glassy polymer, polycarbonate(PC), which can be used in finite element analysis (FEA) of the micro thermal imprint process near the glass transition temperature. An understanding of the deformation behavior of the PC specimens was acquired by performing tensile stress relaxation tests. The viscoelastic material model based on generalized Maxwell model was introduced for the material near Tg to establish the FE model based on the commercial FEA code ABAQUS/Standard with a suitable set of parameters obtained for this material model from the test data. Further validation of the model and parameters was performed by comparing the analysis of FE model results to the experimental data.
이문구,란 슈하이,이수훈,Jun Ni,성연욱,이혜진 한국생산제조학회 2009 한국생산제조학회지 Vol.16 No.3
Large area micro pattern replication has promising application potential in many areas. Rolling imprint process has been demonstrated as one of the most competitive processes for such micro pattern replication, because it has advantages in low cost, high throughput and high efficiency. In this paper, we developed a prototype of roll-to-flat(R2F) thermal imprint system for large area micro pattern replication process, which is one of the key processes in the fabrication of flexible displays. Experimental tests were conducted to evaluate the feasibility of system and the parameters’ effect on the process, such as flat mold temperature, loading pressure and rolling speed. 100mm × 100mm stainless steel flat mold and commercially available polycarbonate sheets were used for the tests. The experimental results showed that the developed R2F system is suitable for fabrication of various micro devices with micro pattern over large area.
이문구,란 슈하이,이수훈,이혜진,성연욱,Lee, Moon-G.,Lan, Shuhuai,Lee, Soo-Hun,Lee, Hye-Jin,Ni, Jun,Sung, Yeon-Wook The Korean Society of Manufacturing Technology Eng 2009 한국공작기계학회지 Vol.18 No.3
Large area micro pattern replication has promising application potential in many areas. Rolling imprint process has been demonstrated as one of the most competitive processes for such micro pattern replication, because it has advantages in low cost, high throughput and high efficiency. In this paper, we developed a prototype of roll-to-flat(R2F) thermal imprint system for large area micro pattern replication process, which is one of the key processes in the fabrication of flexible displays. Experimental tests were conducted to evaluate the feasibility of system and the parameters' effect on the process, such as flat mold temperature, loading pressure and rolling speed. 100mm $\times$ 100mm stainless steel flat mold and commercially available polycarbonate sheets were used for the tests. The experimental results showed that the developed R2F system is suitable for fabrication of various micro devices with micro pattern over large area.
Moon G. Lee(이문구),Lan Shuhuai(란 슈하이),Soo-Hun Lee(이수훈),Hye-Jin Lee(이혜진),Jun Ni,Yeon-wook Sung(성연욱) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.3
Large area micro pattern replication has promising application potential in many areas. Rolling imprint process has been demonstrated as one of the most competitive processes for such micro pattern replication, because it has advantages in low cost, high throughput and high efficiency. In this paper, we developed a prototype of roll-to-flat(R2F) thermal imprint system for large area micro pattern replication process, which is one of the key processes in the fabrication of flexible displays. Experimental tests were conducted to evaluate the feasibility of system and the parameters’ effect on the process, such as flat mold temperature, loading pressure and rolling speed. 100㎜ × 100㎜ stainless steel flat mold and commercially available polycarbonate sheets were used for the tests. The experimental results showed that the developed R2F system is suitable for fabrication of various micro devices with micro pattern over large area.