Hello,

We noticed you're browsing in private or incognito mode.

To continue reading this article, please exit incognito mode or log in.

Not an Insider? Subscribe now for unlimited access to online articles.

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.

Tech Obsessive?
Become an Insider to get the story behind the story — and before anyone else.

Subscribe today
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 the digital magazine, extensive archive, ad-free web experience, and discounts to partner offerings and MIT Technology Review events.

    See details+

    Print + Digital Magazine (6 bi-monthly issues)

    Unlimited online access including all articles, multimedia, and more

    The Download newsletter with top tech stories delivered daily to your inbox

    Technology Review PDF magazine archive, including articles, images, and covers dating back to 1899

    10% Discount to MIT Technology Review events and MIT Press

    Ad-free website experience

/3
You've read of three free articles this month. for unlimited online access. You've read of three free articles this month. for unlimited online access. This is your last free article this month. for unlimited online access. You've read all your free articles this month. for unlimited online access. You've read of three free articles this month. for more, or for unlimited online access. for two more free articles, or for unlimited online access.