Design of Precision Hot Embossing Machine for Micropatterning on PMMA
- 13 August 2021
- journal article
- research article
- Published by ASME International in Journal of Micro- and Nano-Manufacturing
- Vol. 9 (3)
- https://doi.org/10.1115/1.4051770
Abstract
A microfluidic chip requires micro-channels to be created on a substrate. This paper focuses on the design and development of a precision hot embossing machine for replication of microstructures on a PMMA substrate. Kinematic coupling using three spherical balls in radial v-grooves is used to achieve precise positioning of the mold insert with the base. Flexure based parallel guidance mechanism is used for one DOF motion required for the embossing process. The mechanism allows the motion of the mold normal to the substrate surface. Flexure based kinematic coupling with the thermal center is designed to mitigate thermal stress build-up during heating and cooling of the mold insert. An Arduino-based micro-controller is developed to control the temperature profile during the process. A prototype is fabricated and experiments are performed with an aluminium mold insert on a PMMA substrate. The result shows the feasibility of the concept and the set-up can be used to develop a cost-effective precision hot embossing machine for creating micro-patterns for microfluidic applications.Keywords
This publication has 12 references indexed in Scilit:
- Micro structure fabrication with a simplified hot embossing methodRSC Advances, 2015
- Materials for Microfluidic Chip FabricationAccounts of Chemical Research, 2013
- Study on the replication accuracy of polymer hot embossed microchannelsInternational Communications in Heat and Mass Transfer, 2013
- Kinematic couplings: A review of design principles and applicationsInternational Journal of Machine Tools and Manufacture, 2010
- Characterisation of PMMA microfluidic channels and devices fabricated by hot embossing and sealed by direct bondingCurrent Applied Physics, 2009
- Design of a five-axis ultra-precision micro-milling machine—UltraMill. Part 1: holistic design approach, design considerations and specificationsThe International Journal of Advanced Manufacturing Technology, 2009
- Design of a five-axis ultra-precision micro-milling machine—UltraMill. Part 2: integrated dynamic modelling, design optimisation and analysisThe International Journal of Advanced Manufacturing Technology, 2009
- Effect of hot embossing process parameters on polymer flow and microchannel accuracy produced without vacuumJournal of the American Academy of Dermatology, 2008
- Hot embossing in microfabrication. Part I: ExperimentalPolymer Engineering & Science, 2002
- Design for Precision: Current Status and TrendsCIRP Annals, 1998