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.
These materials were meant to revolutionize the solar industry. Why hasn’t it happened?
Perovskites are promising, but real-world conditions have held them back.
Why China is still obsessed with disinfecting everything
Most public health bodies dealing with covid have long since moved on from the idea of surface transmission. China’s didn’t—and that helps it control the narrative about the disease’s origins and danger.
Anti-aging drugs are being tested as a way to treat covid
Drugs that rejuvenate our immune systems and make us biologically younger could help protect us from the disease’s worst effects.
A quick guide to the most important AI law you’ve never heard of
The European Union is planning new legislation aimed at curbing the worst harms associated with artificial intelligence.
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