PMID- 17477681 OWN - NLM STAT- MEDLINE DCOM- 20070706 LR - 20151119 IS - 0034-6748 (Print) IS - 0034-6748 (Linking) VI - 78 IP - 4 DP - 2007 Apr TI - Easily fabricated magnetic traps for single-cell applications. PG - 044301 AB - We describe a simple and inexpensive method of fabricating single cell magnetic traps within a polydimethylsiloxane (PDMS) device. These traps were developed as part of an automated system that captures individual yeast cells in a microfluidic device and analyzes each cell as it buds. To make the traps, PdCl(2) catalyst is rubbed with vinyl foam onto plasma-patterned PDMS, and then Co-Ni-B alloy is electrolessly deposited onto the catalyst at a moderate temperature. We demonstrate individual yeast cell capture and estimate the capture force (1.9-4.4 pN) by measuring the flow speed required to remove the cell from its trap in a microfluidic channel. FAU - Koschwanez, John H AU - Koschwanez JH AD - Department of Electrical Engineering, University of Washington, Seattle, WA 98195-2500, USA. FAU - Carlson, Robert H AU - Carlson RH FAU - Meldrum, Deirdre R AU - Meldrum DR LA - eng GR - 1 R01 HG01497/HG/NHGRI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Rev Sci Instrum JT - The Review of scientific instruments JID - 0405571 RN - 0 (Alloys) RN - 0 (Dimethylpolysiloxanes) RN - 0 (Silicones) RN - 5TWQ1V240M (Palladium) RN - 63148-62-9 (baysilon) RN - N9214IR8N7 (palladium chloride) SB - IM MH - Alloys/chemistry MH - Catalysis MH - Cells, Immobilized/ultrastructure MH - Dimethylpolysiloxanes/chemistry MH - Magnetics MH - *Microfluidic Analytical Techniques MH - *Microscopy, Atomic Force MH - Palladium/chemistry MH - Saccharomycetales/growth & development/*ultrastructure MH - Silicones/chemistry EDAT- 2007/05/05 09:00 MHDA- 2007/07/07 09:00 CRDT- 2007/05/05 09:00 PHST- 2007/05/05 09:00 [pubmed] PHST- 2007/07/07 09:00 [medline] PHST- 2007/05/05 09:00 [entrez] AID - 10.1063/1.2722400 [doi] PST - ppublish SO - Rev Sci Instrum. 2007 Apr;78(4):044301. doi: 10.1063/1.2722400.