A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems

Frederik Bundgaard; Oliver Geschke; R Zengerle; J Ducree

doi:10.1109/SENSOR.2007.4300241

A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems

Frederik Bundgaard, Oliver Geschke, R Zengerle, J Ducree

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

383 Downloads (Pure)

Abstract

A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg. In an unfilled channel of such a "V-groove", TIR deflects the beam by 90deg into a simple light detector. Upon the presence of liquid, the refractive index in the channel changes, thus eliminating deflection by TIR. The detection principle is robust, requiring no calibration, and tolerating alignment errors of the laser larger than the width and depth of the microfluidic channels. The machining of the V-groves can seamlessly be integrated into common polymer microfabrication schemes such as injection molding.

Original language	English
Title of host publication	International Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007.
Publisher	IEEE
Publication date	2007
ISBN (Print)	1-4244-0842-3
DOIs	https://doi.org/10.1109/SENSOR.2007.4300241
Publication status	Published - 2007
Event	14th International Solid-State Sensors, Actuators and Microsystems Conference - Lyon, France Duration: 10 Jun 2007 → 14 Jun 2007 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4300055

Conference

Conference	14th International Solid-State Sensors, Actuators and Microsystems Conference
Country/Territory	France
City	Lyon
Period	10/06/2007 → 14/06/2007
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4300055

Bibliographical note

Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Access to Document

10.1109/SENSOR.2007.4300241

BundgaardFinal published version, 3.75 MB

OpenUrl availability

Full text

Cite this

@inproceedings{94bf1ecb79cb4936999de2db0fee2dda,

title = "A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems",

abstract = "A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg. In an unfilled channel of such a {"}V-groove{"}, TIR deflects the beam by 90deg into a simple light detector. Upon the presence of liquid, the refractive index in the channel changes, thus eliminating deflection by TIR. The detection principle is robust, requiring no calibration, and tolerating alignment errors of the laser larger than the width and depth of the microfluidic channels. The machining of the V-groves can seamlessly be integrated into common polymer microfabrication schemes such as injection molding.",

author = "Frederik Bundgaard and Oliver Geschke and R Zengerle and J Ducree",

note = "Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 14th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS 2007 ; Conference date: 10-06-2007 Through 14-06-2007",

year = "2007",

doi = "10.1109/SENSOR.2007.4300241",

language = "English",

isbn = "1-4244-0842-3",

booktitle = "International Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007.",

publisher = "IEEE",

address = "United States",

url = "http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=4300055",

}

Bundgaard, F, Geschke, O, Zengerle, R & Ducree, J 2007, A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems. in International Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007.. IEEE, 14th International Solid-State Sensors, Actuators and Microsystems Conference, Lyon, France, 10/06/2007. https://doi.org/10.1109/SENSOR.2007.4300241

A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems. / Bundgaard, Frederik; Geschke, Oliver; Zengerle, R et al.
International Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007.. IEEE, 2007.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems

AU - Bundgaard, Frederik

AU - Geschke, Oliver

AU - Zengerle, R

AU - Ducree, J

N1 - Copyright: 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 2007

Y1 - 2007

N2 - A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg. In an unfilled channel of such a "V-groove", TIR deflects the beam by 90deg into a simple light detector. Upon the presence of liquid, the refractive index in the channel changes, thus eliminating deflection by TIR. The detection principle is robust, requiring no calibration, and tolerating alignment errors of the laser larger than the width and depth of the microfluidic channels. The machining of the V-groves can seamlessly be integrated into common polymer microfabrication schemes such as injection molding.

AB - A novel detection scheme for detection of liquid levels and bubbles in microfluidic systems, using the principle of total internal reflection (TIR) is presented. A laser beam impinges on the side walls of a channel which are inclined at 45deg. In an unfilled channel of such a "V-groove", TIR deflects the beam by 90deg into a simple light detector. Upon the presence of liquid, the refractive index in the channel changes, thus eliminating deflection by TIR. The detection principle is robust, requiring no calibration, and tolerating alignment errors of the laser larger than the width and depth of the microfluidic channels. The machining of the V-groves can seamlessly be integrated into common polymer microfabrication schemes such as injection molding.

U2 - 10.1109/SENSOR.2007.4300241

DO - 10.1109/SENSOR.2007.4300241

M3 - Article in proceedings

SN - 1-4244-0842-3

BT - International Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007.

PB - IEEE

T2 - 14th International Solid-State Sensors, Actuators and Microsystems Conference

Y2 - 10 June 2007 through 14 June 2007

ER -

A Simple Opto-Fluidic Switch Detecting Liquid Filling in Polymer-Based Microfluidic Systems

Abstract

Conference

Bibliographical note

Access to Document

OpenUrl availability

Fingerprint

Cite this