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Polymeric Microneedle Array Fabrication by Photolithography

Polymeric Microneedle Array Fabrication by Photolithography

Published on: November 17, 2015

Noncontact microembossing technology for fabricating thermoplastic optical polymer microlens array sheets.

Xuefeng Chang¹, Dan Xie¹, Xiaohong Ge²

¹School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China ; Key Laboratory of Precision Actuation and Transmission, Fujian Province University, Xiamen 361024, China.

Thescientificworldjournal

|August 28, 2014

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Noncontact microembossing creates microlens arrays from thermoplastic polymers like polymethyl methacrylate (PMMA), polyStyrene (PS), and polycarbonate (PC). This method offers a cost-effective and efficient way to produce optical polymer sheets.

Area of Science:

Materials Science
Optics
Manufacturing Engineering

Background:

Thermoplastic optical polymers offer advantages over glass, including better performance, mechanical properties, and lower cost.
Microlens arrays are crucial components in various optical systems.

Purpose of the Study:

To investigate noncontact microembossing for producing microlens arrays from PMMA, PS, and PC.
To analyze the thermal and mechanical properties of these polymers during the process.

Main Methods:

Utilized finite element analysis to study the principles of noncontact microembossing.
Employed independently developed hot-embossing equipment to fabricate microlens arrays.
Investigated the role of surface tension and glass transition temperature in microlens formation.

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Main Results:

Successfully fabricated planoconvex microlens arrays on PMMA, PS, and PC sheets.
Demonstrated the formation of microlenses due to surface tension under specific temperature and pressure conditions.
Validated the effectiveness of the noncontact microembossing technique for diverse thermoplastic optical polymers.

Conclusions:

Noncontact microembossing is a promising technique for fabricating thermoplastic optical polymer microlens array sheets.
The process is characterized by its simplicity and low production costs.
This method facilitates the creation of diverse optical polymer microlens arrays.