Nanotechnology

A light twisting material created from nano semiconductors may become an optical game changer.

Chiral assembly from Achiral nanoclusters. The magical size nano -cluster science can form a noise assembly through the Menniscas guided sedimentation. The degenerated excitation state is divided into a non -degreasing state when coupling is generated, and an excitation child couplet is generated in the CD spectrum. When the evaporated geometry is controlled, the Takada real film with the dominant hand passed down to the fiber is generated, forming various domain shapes and sizes with homokiral deemes exceeding 6 mm2, and between the left and right hand of the left hand and the right hand. It transitions smoothly. Credit: Science (2025). Doi: 10.1126/Science.ado7201

Cornell scientists have developed a new technology to generate a complicated twisted spiral structure with extraordinary light vending characteristics, or to generate “chiral” materials.

Detailed discoveries in the journal science papers can revolutionize the technology that depends on the control of optical polarization, such as displays, sensors, and optical communication devices.

The chiral material is special because it can twist light. One way to create them is to use excitation coupling. Here, light excites the nano material and forms an excitation child who interacts and share energy with each other. Historically, excitation bonded chiral materials were made from organic carbon -based molecules. Creating them from inorganic semiconductors, which pays tribute to these stability and adjustable optical characteristics, has been proved to be very challenging due to the exact control necessary for the interaction of nano materials. 。

Scientists from the Litchard D. Robinson, an associate professor of Cornell Engineering, and a senior researcher of research, use a “magic -sized cluster” made from cadmium -based semiconductor compounds. We have overcome this task.

Magic -sized clusters are unique nano particles, unlike many nanoparticles, which can change their sizes continuously, and are the same copy that exists only in individual sizes. A previous study by the Robinson Group reported that when the nano -cluster was treated on the thin film, it demonstrated the dual coloring, which is an important signature of the killance.

“The circular duality means absorbing the right -handed circular polarized light and right -handed circular polarized light in a different way. I noticed that this was an opportunity to bring the real estate in the inorganic material. “

Researchers used the Menniscas -inducing evaporation to twist the linear nano -cluster assembly into a shy shape, and formed a size of several square -meter. These films show a very large light and substance reaction, and the record value of the previously reported inorganic semiconductor material is increased almost two digits.

“Because of the versatility of the methods operating in various nano -cluster compositions, it can adjust film to interact with light from ultraviolet rays to infrared.”

“Assemblyitechnic blows linear alignment not only in chirality but also when deposited in nano -cluster fibers, becomes sensitive to both circulation and linear light, and enhances the functionality of a metamaterial like an optical sensor. “

This discovery may revolutionize the technology that depends on the control of light polarization, leading to new innovations such as holographic 3D display, room temperature quantum computing, ultra -low power device, or non -invasive medical diagnosis analyzed. there is. The results of this survey also provide insights on the formation of natural chiral structures such as DNA, which can inform the future research of biology and nanotechnology.

“I want to understand how cluster size, composition, direction, proximity, etc. will affect chiropetic behavior,” Robinson said. “It’s a complicated science, but by demonstrating this through three different material systems, there are many things to explore, and new doors for research and applications are open.”

Robinson focuses in the future work to expand technology to other materials such as nanoprateret and quantum dots, and to improve the process of industrial -scale manufacturing processes that coat devices with a thin semiconductor material. He said he would hit.

Details: converts the Achiral semiconductor to the exceptional dual coloring, Science (2025), and chirardmain (2025). Doi: 10.1126/Science.ado7201

Provided from Cornell University

Quotation: The light twisting material created from the nano semiconductor is Https://phys.org/2025-01-materials-nano-semiconductors-Game on January 30, 2025 on January 30, 2025. It may be a game changer (January 30, 2025). -changer.html

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