Micromachined pipettes integrated in a flow channel for single DNA molecule study by optical trapping


Rusu, Cristina and Oever, Ronny van 't and Boer, Meint de and Jansen, Henri and Berenschot, Erwin and Elwenspoek, Miko and Bennink, Martin L. and Kanger, Johannes S. and Grooth, Bart G. de and Greve, Jan and Brugger, Jürgen and Berg, Albert van den (2000) Micromachined pipettes integrated in a flow channel for single DNA molecule study by optical trapping. In: Micro- and Nanotechnology for Biomedical and Environmental Applications, 26-27 January 2000, San Jose, CA, USA (pp. pp. 41-49).

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Abstract:We have developed a micromachined flow cell consisting of a flow channel integrated with micropipettes. The flow cell is used in combination with an optical trap set-up (optical tweezers) to study mechanical and structural properties of (lambda) -DNA molecules. The flow cell was realized using silicon micromachining including the so-called buried channel technology to fabricate the micropipettes, the wet etching of glass to create the flow channel, and the powder blasting of glass to create the fluid connections. The volume of the flow cell is 2 (mu) l. The pipettes have a length of 130 micrometer, a width of 5 - 10 micrometer, a round opening of 1 micron and can be processed with different shapes. Using this flow cell we stretched single molecules ((lambda) -DNA) showing typical force-extension curves also found with conventional techniques.
Item Type:Conference or Workshop Item
Copyright:© 2000 SPIE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/37010
Official URL:http://dx.doi.org/10.1117/12.379579
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