Analysis for microstructure of microlens arrays on micro-injection molding by numerical simulation

Yung Kang Shen, Chih Yuan Chang, Yu Sheng Shen, Sung Chih Hsu, Ming Wei Wu

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Micro-injection molding is the most important technology in MEMS/NEMS industry for the necessary of scale, velocity and cost by the development of MEMS/NEMS industry and the innovation of MEMS/NEMS industry. It has the advantage of low cost, low interface and small volume in MEMS/NEMS industry. This paper emphasizes the analysis for microstructure of microlens arrays on micro-injection molding. The finite element simulation in a three-dimensional inertia-free, incompressible flow is presented. A control volume scheme with a fixed finite element mesh is employed to predict melt front advancement. The plastic material of microlens arrays is used for PMMA material. The results show the short shot on the filling stage of micro-injection molding. The results also indicate that the melt front first advance into the thickness direction of microlens arrays, and then it goes into the microstructure of microlens arrays.

Original languageEnglish
Pages (from-to)723-727
Number of pages5
JournalInternational Communications in Heat and Mass Transfer
Volume35
Issue number6
DOIs
Publication statusPublished - Jul 2008

Keywords

  • Micro-injection molding
  • Microlens arrays
  • Microstructure
  • Moldflow, Flow situation

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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