Next Article in Journal
Laser Direct Writing of Thick Hybrid Polymers for Microfluidic Chips
Next Article in Special Issue
Adaptive Liquid Lens Actuated by Droplet Movement
Previous Article in Journal
Implementation of Synchronous Micromotor in Developing Integrated Microfluidic Systems
Previous Article in Special Issue
Fabrication and Characterization of Flexible Electrowetting on Dielectrics (EWOD) Microlens
Article Menu

Export Article

Open AccessArticle
Micromachines 2014, 5(3), 457-471;

CO2 Laser Manufacturing of Miniaturised Lenses for Lab-on-a-Chip Systems

Earl Mountbatten Building, School of Engineering & Physical Sciences, Research Institute of Sensors, Signals and Systems, MicroSystems Engineering Centre (MISEC), Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK
Author to whom correspondence should be addressed.
Received: 30 May 2014 / Revised: 11 July 2014 / Accepted: 15 July 2014 / Published: 21 July 2014
(This article belongs to the Special Issue Microlenses)
Full-Text   |   PDF [2356 KB, uploaded 22 July 2014]   |  


This article describes the manufacturing and characterisation of plano-convex miniaturised lenses using a CO2 laser engraving process in PMMA substrates. The technique allows for lenses to be fabricated rapidly and in a reproducible manner at depths of over 200 µm and for lens diameters of more than 3 mm. Experimental characterisation of the lens focal lengths shows good correlation with theory. The plano-convex lenses have been successfully embedded into capillary microfluidic systems alongside planar microlenses, allowing for a significant reduction of ancillary optics without a loss of detection sensitivity when performing fluorescence measurements. Such technology provides a significant step forward towards the portability of fluorescence- or luminescence-based systems for biological/chemical analysis. View Full-Text
Keywords: microlens; microfluidic; laser; PMMA; lab-on-a-chip; optics microlens; microfluidic; laser; PMMA; lab-on-a-chip; optics

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Mohammed, M.-I.; Desmulliez, M.P.Y. CO2 Laser Manufacturing of Miniaturised Lenses for Lab-on-a-Chip Systems. Micromachines 2014, 5, 457-471.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top