Next Article in Journal
A Tuned-RF Duty-Cycled Wake-Up Receiver with −90 dBm Sensitivity
Next Article in Special Issue
Predicting Long-Term Stability of Precise Oscillators under Influence of Frequency Drift
Previous Article in Journal
Simplified Antenna Group Determination of RS Overhead Reduced Massive MIMO for Wireless Sensor Networks
Previous Article in Special Issue
Field Tests of a Portable MEMS Gravimeter
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(1), 83; https://doi.org/10.3390/s18010083

Fabrication of Glass Microchannel via Glass Imprinting using a Vitreous Carbon Stamp for Flow Focusing Droplet Generator

1
School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
2
School of Mechanical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea
*
Authors to whom correspondence should be addressed.
Received: 28 October 2017 / Revised: 21 December 2017 / Accepted: 27 December 2017 / Published: 29 December 2017
(This article belongs to the Collection Modeling, Testing and Reliability Issues in MEMS Engineering)
View Full-Text   |   Download PDF [8898 KB, uploaded 29 December 2017]   |  

Abstract

This study reports a cost-effective method of replicating glass microfluidic chips using a vitreous carbon (VC) stamp. A glass replica with the required microfluidic microstructures was synthesized without etching. The replication method uses a VC stamp fabricated by combining thermal replication using a furan-based, thermally-curable polymer with carbonization. To test the feasibility of this method, a flow focusing droplet generator with flow-focusing and channel widths of 50 µm and 100 µm, respectively, was successfully fabricated in a soda-lime glass substrate. Deviation between the geometries of the initial shape and the vitreous carbon mold occurred because of shrinkage during the carbonization process, however this effect could be predicted and compensated for. Finally, the monodispersity of the droplets generated by the fabricated microfluidic device was evaluated. View Full-Text
Keywords: autofluorescence; glass imprinting process; vitreous carbon mold; glass microchannel; droplet based microfluidic autofluorescence; glass imprinting process; vitreous carbon mold; glass microchannel; droplet based microfluidic
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Jang, H.; Refatul Haq, M.; Kim, Y.; Kim, J.; Oh, P.-H.; Ju, J.; Kim, S.-M.; Lim, J. Fabrication of Glass Microchannel via Glass Imprinting using a Vitreous Carbon Stamp for Flow Focusing Droplet Generator. Sensors 2018, 18, 83.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top