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Two bottles of cyanide go missing from Osaka university

A laboratory worker discovered the bottles of deadly compounds were missing during an inventory check on May 2.

Manipulation of Single Molecules' Flow in Solution

Researchers dream of employing tiny molecules as building blocks to build things, like how people construct things with mechanical parts. Nevertheless, molecules are extremely small—approximately one hundred millionth the size of a softball—and they travel aimlessly in liquids, leading to difficulty in manipulating them in a single form.

Single-molecule valve: Breakthrough in nanoscale control: On the horizon: A paradigm shift revolutionizing chemical and biochemical synthesis

Breakthrough Single-Molecule Valve Controls Nanoscale

Single-Molecule Valve: A Breakthrough in Nanoscale Control

Single-molecule valve: a breakthrough in nano

A joint research group at Osaka Metropolitan University has succeeded in regulating the flow of single molecules in solution by opening and closing the nanovalve mounted on the nanofluidic device by applying external pressure. The research group fabricated a device with a ribbon-like, thin, soft glass sheet on the top, and at the bottom a hard glass substrate having nanochannels and nanovalve seats. By applying external pressure to the soft glass sheet to open and close the valve, they succeeded in directly manipulating and controlling the flow of individual molecules in solution. They also observed an effect of fluorescence signal amplification when single fluorescent molecules are confined in the tiny nanospace inside the valve. The effect can be ascribed to the nanoconfinement, which suppresses the random motion of the molecules.

Recovering rare earth elements in environmental water

Treasure hunt in hot springs?

Nanofluidic devices offer solutions for studying single molecule chemical reactions

In a chemical reaction, molecules in different substances meet one another to form new molecules causing changes in the bonds of their atoms. The molecules collide at an extremely close distance—a ...

Nanofluidic devices offer solutions for studying single molecule chemical reactions