Skip to Content

Nanotech: Design by DNA

One goal of nanotechnology is to create electronic devices on the nanometer (billionths of a meter) scale. But making such tiny devices has been held up because moving nanoscale building blocks around one by one to form wires and components is so difficult. Now scientists at the Technion-Israel Institute of Technology in Haifa say they have formed silver nanowires using DNA as a template. The researchers stretched strands of DNA between two gold anchors, using disulfide groups on the DNA as the glue. They exposed this scaffolding to a solution of silver ions, which are attracted by the negatively charged DNA. A standard chemical agent reduces the ions to silver metal, producing 100-nanometer-wide silver wires.

Keep Reading

Most Popular

This startup wants to copy you into an embryo for organ harvesting

With plans to create realistic synthetic embryos, grown in jars, Renewal Bio is on a journey to the horizon of science and ethics.

VR is as good as psychedelics at helping people reach transcendence

On key metrics, a VR experience elicited a response indistinguishable from subjects who took medium doses of LSD or magic mushrooms.

This nanoparticle could be the key to a universal covid vaccine

Ending the covid pandemic might well require a vaccine that protects against any new strains. Researchers may have found a strategy that will work.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.