A View from Jennifer Chu

Correction: Tiny Pumps for Diagnostic Chips

Corrected version of article posted.

  • November 17, 2006

The original version of the article “Tiny Pumps for Diagnostic Chips” stated that Martin Bazant, a professor of applied mathematics at MIT, and his colleagues at MIT’s Institute for Soldier Nanotechnologies “designed a new approach to capillary electro-osmosis.” Actually, this is an old method using DC fields. Bazant and his colleagues have been exploring the new method of AC electro-osmosis (ACEO), his design proving much faster than previous ACEO pumps.

Additionally, the article, written by Jennifer Chu, stated that “the team was only able to pump de-ionized water.” In fact, the lab’s design successfully pumped a variety of fluids, including dilute blood and a number of diluted buffer solutions, as well as de-ionized water. The problem with pumping undiluted blood is not an issue of viscosity, as originally mentioned, but of ion concentration, which Bazant’s group is now working to understand.

Finally, the article explained the pumping system as “ascending steps,” whereas the design is a flat substrate with raised steps on each electrode which lead to very fast pumping via electric fields that pull fluids through the chip.

The corrected version of the article can be found here.

The author regrets the errors made in the original article and apologizes to the researchers and to Technology Review’s readers for the above-stated misrepresentations.

Cut off? Read unlimited articles today.

Become an Insider
Already an Insider? Log in.

Uh oh–you've read all of your free articles for this month.

Insider Premium
$179.95/yr US PRICE

More from Rewriting Life

Reprogramming our bodies to make us healthier.

Want more award-winning journalism? Subscribe to Insider Plus.
  • Insider Plus {! insider.prices.plus !}*

    {! insider.display.menuOptionsLabel !}

    Everything included in Insider Basic, plus ad-free web experience, select discounts to partner offerings and MIT Technology Review events

    See details+

    What's Included

    Bimonthly home delivery and unlimited 24/7 access to MIT Technology Review’s website.

    The Download. Our daily newsletter of what's important in technology and innovation.

    Access to the Magazine archive. Over 24,000 articles going back to 1899 at your fingertips.

    Special Discounts to select partner offerings

    Discount to MIT Technology Review events

    Ad-free web experience

/
You've read all of your free articles this month. This is your last free article this month. You've read of free articles this month. or  for unlimited online access.