MEMSuniverse » dielectrophoresis http://www.memsuniverse.com A Passion for Creativity & Innovation Tue, 23 Oct 2012 21:57:22 +0000 en-US hourly 1 http://wordpress.org/?v=3.4.2 Cells dance the waltz on top of an integrated circuit http://www.memsuniverse.com/microfluidics/cells-dance-the-waltz-on-top-of-an-integrated-circuit.html http://www.memsuniverse.com/microfluidics/cells-dance-the-waltz-on-top-of-an-integrated-circuit.html#comments Sat, 17 Jan 2009 23:08:21 +0000 admin http://www.memsuniverse.com/?p=986 In this movie a yeast cell (on the left) and the lung cell from a rat (on the right) are moved using a hybrid integrated circuit / microfluidic system developed in our lab.

To learn more, check out our lab on a chip paper:
http://www.rsc.org/Publishing/Journals/LC/article.asp?DOI=b710928h

Duration : 0:0:35


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]]> http://www.memsuniverse.com/microfluidics/cells-dance-the-waltz-on-top-of-an-integrated-circuit.html/feed 0 Moving drops of fluid on the Fabutron http://www.memsuniverse.com/microfluidics/moving-drops-of-fluid-on-the-fabutron.html http://www.memsuniverse.com/microfluidics/moving-drops-of-fluid-on-the-fabutron.html#comments Sun, 28 Sep 2008 06:08:13 +0000 admin http://www.memsuniverse.com/?p=806 A hybrid integrated circuit / microfluidic chip is used to combine, independently control, and separate pL fluid drops.

The droplet is water with green dye and it sits on top of the integrated circuit, sandwiched between two layers of oil.

to learn more, check out our Lab on a Chip paper:
http://www.rsc.org/Publishing/Journals/LC/article.asp?DOI=b710928h

Duration : 0:0:16


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]]> http://www.memsuniverse.com/microfluidics/moving-drops-of-fluid-on-the-fabutron.html/feed 0 MFDEP cell loading device proof-of-concept http://www.memsuniverse.com/lab-on-chip/mfdep-cell-loading-device-proof-of-concept.html http://www.memsuniverse.com/lab-on-chip/mfdep-cell-loading-device-proof-of-concept.html#comments Mon, 14 Jan 2008 11:34:59 +0000 admin http://www.memsuniverse.com/?p=44 Proof-of-concept of a MEMS device that I designed for my PhD dissertation, at the University of Maryland. Cells are loaded inside a micro-cell cage using dielectrophoresis. The active cancellation of the parasitic traps is necesary, thus becoming the use of multiple frequencies (MFDEP). This is the first machine of its kind, and it is very useful if you need to load 1000′s of cells inside cages in matter of seconds. This technology is part of the “Cell Clinics” project (PI: Elisabeth Smela). The cells used are yeast cells. See the article entitled “Parasitic Trap Cancellation Using Multiple Frequency Dielectrophoresis, Demonstrated by Loading Cells into Cages”, upcomming in the journal Lab on a Chip.

Duration : 0:4:4


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]]> http://www.memsuniverse.com/lab-on-chip/mfdep-cell-loading-device-proof-of-concept.html/feed 0 Dielectrophoresis Non Contact Manipulation http://www.memsuniverse.com/lab-on-chip/dielectrophoresis-non-contact-manipulation.html http://www.memsuniverse.com/lab-on-chip/dielectrophoresis-non-contact-manipulation.html#comments Fri, 26 Oct 2007 04:51:59 +0000 admin http://www.memsuniverse.com/?p=280 Non-contact manipulation is a way to perform micro-objets positioning without adhesion perturbations. This video shows a top view of a non contact micromanipulation using negative dielectrophoresis (DEP). The microgripper’s end-effectors are in silicon with gold electrodes, and the manipulated gl balls are around 20µm diameter. An alternative tension (20V p-p) is applied between electrodes on each end-effectors to applied a negative DEP force on the object.

http://www.lab.cnrs.fr/pronomia

Duration : 0:1:22


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]]> http://www.memsuniverse.com/lab-on-chip/dielectrophoresis-non-contact-manipulation.html/feed 0 DEP Dynamic release http://www.memsuniverse.com/lab-on-chip/dep-dynamic-release.html http://www.memsuniverse.com/lab-on-chip/dep-dynamic-release.html#comments Fri, 26 Oct 2007 04:45:59 +0000 admin http://www.memsuniverse.com/?p=281 During micromanipulations, release is disturbed by adhesion effects and negative dielectrophoresis (DEP) can be used to actively release the object. The video presents a top view of an active release. The microgripper’s end-effectors are in silicon with gold electrodes, and the handled ball is a 20µm gl ball. An alternative tension (20V p-p) is applied between electrodes on each end-effectors to applied a negative DEP force on the object.

http://www.lab.cnrs.fr/pronomia

Duration : 0:0:28


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]]> http://www.memsuniverse.com/lab-on-chip/dep-dynamic-release.html/feed 0 IC microfludic system apparatus- MIT-Harvard CCNE http://www.memsuniverse.com/microfluidics/ic-microfludic-system-apparatus-mit-harvard-ccne.html http://www.memsuniverse.com/microfluidics/ic-microfludic-system-apparatus-mit-harvard-ccne.html#comments Thu, 01 Feb 2007 16:00:59 +0000 admin http://www.memsuniverse.com/?p=97 Integrated Circuit / Microfludic Apparatus built by Tom Hunt

Thanks to the MIT-Harvard Center for Cancer Nanotechnology Excellence

Duration : 0:0:14


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]]> http://www.memsuniverse.com/microfluidics/ic-microfludic-system-apparatus-mit-harvard-ccne.html/feed 0 Yeast Cells Moving – MIT-Harvard CCNE http://www.memsuniverse.com/microfluidics/yeast-cells-moving-mit-harvard-ccne.html http://www.memsuniverse.com/microfluidics/yeast-cells-moving-mit-harvard-ccne.html#comments Thu, 01 Feb 2007 15:10:59 +0000 admin http://www.memsuniverse.com/?p=98 11 micron pixels, 1MHz, 5V field, 100uM manitol in water

Duration : 0:1:14


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