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Breakthrough in nanoscience: Indian origin scientist creates first single molecule device

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By NewsGram Staff Writer

Under the direction of Latha Venkataraman, an Indian- American scientist, a team of Columbia Engineering has created a single-molecule electronic device. This team is the first to develop a single-molecule diode that may have real-world technological applications for nanoscale devices. Their paper, ‘Single-Molecule Diodes with High On-Off Ratios through Environmental Control’ was published on May 25 in Nature Nanotechnology.

“Our new device represents the ultimate in functional miniaturization that can be achieved for an electronic device,” said Venkataraman as reported by IANS.

“Constructing a device where the active elements are only a single molecule has long been a tantalizing dream in nanoscience”, she added.

The idea of creating a single-molecule diode was suggested by Arieh Aviram and Mark Ratner who theorized in 1974 that a molecule could act as a rectifier, a one-way conductor of electric current. Since then the researchers have been exploring the charge-transport properties of molecules.

As per the report Venkataraman and her team are now working on understanding the fundamental physics behind their discovery and trying to increase the rectification ratios they observed, using new molecular systems.

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China May Restrict Tech Access in Spiraling US Trade Dispute

The system will build a strong firewall to strengthen the nation's ability to innovate

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China, Technology, US
People try out Huawei smartphone models on display at an electronic store in Beijing, China, May 20, 2019. VOA

China is creating a system to protect its technology, according to state media, as the U.S. restricts the access of Chinese companies to American technology in a spiraling trade dispute.

The People’s Daily newspaper said Sunday that the system will build a strong firewall to strengthen the nation’s ability to innovate and to accelerate the development of key technologies.

“China … will never allow certain countries to use China’s technology to contain China’s development and suppress Chinese enterprises,”the main paper of the ruling Communist Party said, without directly referring to the United States.

No details have been released about what China is calling a national technological security management list. The plan was announced Saturday evening in a brief three-paragraph dispatch by the official Xinhua News Agency.

China, Technology, US

China is creating a system to protect its technology. Pixabay

The aim is to forestall and defuse national security risks more effectively, Xinhua said, adding that detailed measures would be unveiled in the near future.

The initiative follows U.S. moves to restrict sales to Huawei Technologies and other Chinese tech firms on national security grounds.

The U.S. Commerce Department last month added Huawei to its list of entities that are engaged in activities contrary to U.S. national security or foreign policy interests.

As such, any sale of U.S. technology to Huawei will require Commerce Department approval.

Also Read- Sleep Disturbances Associated with Mental Health Problems Among Natural Disaster Survivors

China responded by saying its Commerce Ministry would develop its own list of foreign entities that it regards as “unreliable.” (VOA)