Free Republic

Professor Charles Lieber’s arrest on Jan. 28 made headlines on all the major U.S. media. After all, he was not only a Harvard professor, he was a world-class researcher in nanotechnology, working on highly sensitive research projects for the U.S. government. The FBI complaint alleges that he had been secretly participating in China’s “Thousand Talents Plan” since 2011, paid some $600,000 a year plus expenses to open and operate a lab at the Wuhan University of Technology (yes, that Wuhan). We know that China contracts with American experts in this way in order to steal their research and gain commercial...

Japanese researchers have made ultra-thin metal wires by growing them inside carbon nanotubes. It is hoped that the research - which can make wires only a single atom in diameter - could provide interesting clues to the best components for future nanoelectronic devices. Atom-thin metal wires show many novel electronic properties - but the wires are so fragile and prone to oxidation that they have been difficult to study. Ryo Kitaura and colleagues at Nagoya University solved this problem by growing the wires encased within protective nanotubes. This means that their properties can be measured and mapped. 'The process [of growing the...

Multimedia   Zhong Lin Wang describes his work to power the nanoworld. Nanoscale sensors are exquisitely sensitive, very frugal with power, and, of course, tiny. They could be useful in detecting molecular signs of disease in the blood, minute amounts of poisonous gases in the air, and trace contaminants in food. But the batteries and integrated circuits necessary to drive these devices make them difficult to fully miniaturize. The goal of Zhong Lin Wang, a materials scientist at Georgia Tech, is to bring power to the nano world with minuscule generators that take advantage of piezoelectricity. If he succeeds,...

The discovery that a wide variety of bacteria can be persuaded to produce wire-like appendages that conduct electricity could prove vital to the development of more efficient biological fuel cells. Bacteria that use sugars and sewage as fuel are being investigated as a pollution-free source of electricity. They feed by plucking electrons from atoms in their fuel and dumping them onto the oxygen or metal atoms in the mixture. The transfer of the electrons creates a current, and connecting the bacteria to an electrode in a microbial fuel cell will generate electricity, although not necessarily very efficiently. A species of...