Golden butterflies can form their own semiconductor skin, Nano-scale gold butterflies provide a more accurate way to grow / synthesize nanoscale semiconductors that can be used in nanolazers and other applications.
Researchers at Hokkaido University have found a unique approach to making nanoscale semiconductors on metal surfaces.
Details of the method have been published in Nano Letters and can continue research in the manufacture of nanoscale and energy producers. Golden butterflies can form their own semiconductor skin.
The approach, developed by the Research Institute of Electronics at Hokkaido University and Hokkai Gakuen University, involves generating local heat in gold nanoparticles in butterfly-shaped nanostructures.
Heat causes hydrothermal synthesis in which the zinc oxide semiconductor crystallizes in gold nanoparticles.
Scientists are researching ways to carefully place nanoscale semiconductors on metal particles, for example, to use them in nano lasers and nanolithography.
However, the current method is inaccurate or too expensive.
The approach developed by the Japanese team overcame this problem.
The team initially carried out simulations to determine the optimal conditions for precise control of heat generation in nanostructures. Golden butterflies can form their own semiconductor skin.
They use a phenomenon called surface plasmon resonance, a process that converts a portion of light into heat into metal.
According to the simulation, a butterfly-shaped nanostructure consisting of two gold rhombic particles located on both sides of the gold nanorod will produce optimal conditions. In this system, the nanorod or butterfly body functions as a nanoshell using special polarized light.
After rotating the polarization of light 90 degrees, diamond particles or butterfly wings must act as antennas to collect light at the underwater points in the butterfly’s semiconductor skin.
To test this theory, they made a golden butterfly and placed it in a glass chamber. A solution of the same portion of zinc nitrate hexahydrate and hexamethylenetetramine is added to the chamber, which is then sealed and placed in a microscopic step.
When the laser beam is emitted into the system in the room, the nanorod heats up and, as expected, the semiconductor oxide particles crystallize on its surface. Golden butterflies can form their own semiconductor skin.
This shows that the butterfly-shaped gold nano antenna can control precisely where plasmon-assisted hydrothermal synthesis takes place, which allows the formation of local semiconductors in the nanoscale.
“Further research is expected to lead to the development of powerful nanoscale light sources, high performance photoelectric conversion devices and photocatalysts.
This can also lead to applications in semiconductor electronics and optical quantum information processing.