Recently, physicists from the Bielefeld University and the IFW Dresden in Germany published a major research result showing how to use ultra-short optical impulse to control semiconductors in one picosecond. This research was published in the journa...
Recently, physicists from the Bielefeld University and the IFW Dresden in Germany published a major research result showing how to use ultra-short optical impulse to control semiconductors in one picosecond. This research was published in the journal Nature Communications and is a major breakthrough in the field of nanoelectronics.
The research team has designed a nano-level antenna that can convert Terahertz radiation into a vertical field and apply it to atomic thin materials such as marigold disulfide (MoS₂). Megahertz radiation is located between the red outer line and the microwave frequency, and this new antenna design allows the generated field strength to reach several million volts per centimeter.
project manager Dr. Dmitry Turchinovich, a physics professor at Bielefeld University, said that traditionally, this type of vertical field was applied through electronic gates, but the response rate of this method was relatively slow. In contrast, this new technology uses megahertz radiation itself to generate control signals in semiconductor materials, realizing industry-compatible optical drive ultrafast optical electronic technology.
This technology enables real-time control of electronic structures on time scales less than one picosecond, and scientists have successfully demonstrated that the optical and electronic properties of materials can be optionally modified through optical phytos.
The core concepts of the study, as well as experimental implementation and theoretical modeling, were developed at the University of Bielefeld. Lead author and time-honored researcher Dr. Tomoki Hiraoka said that seeing such a powerful and consistent effect purely triggered by megahertz radiation is very exciting.
To achieve this effect, Dr. Andy Thomas's IFW team created complex 3D-2D nano-antennas. Thomas said the process of developing the best equipment is very arduous and multiple different structures must be manufactured and tested to achieve the desired performance.
This development is expected to promote the development of ultrafast signal control devices, electronic switches and sensors. These components can be applied in the fields of data transmission, photographers and laser systems, and potential applications include communication systems, computing, imaging and quantum technologies.
Physicists Harness Light To Control Semiconductors in Trillionths of a Second
