Dynamical Control over Terahertz Electromagnetic Interference Shielding with 2D Ti3C2Ty MXene by Ultrafast Optical Pulses
| Autor: | Frank A. Hegmann, Naaman Amer, Guangjiang Li, Dmitry Turchinovich, Hassan A. Hafez, Lyubov V. Titova, Vadym Mochalin, Shuohan Huang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Terahertz radiation Mechanical Engineering Bioengineering 02 engineering and technology General Chemistry Nanosecond 021001 nanoscience & nanotechnology Condensed Matter Physics Electromagnetic radiation Terahertz spectroscopy and technology Wavelength Optoelectronics General Materials Science Transient (oscillation) 0210 nano-technology business Absorption (electromagnetic radiation) Ultrashort pulse |
| Zdroj: | Nano Letters. 20:636-643 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | High electrical conductivity and strong absorption of electromagnetic radiation in the terahertz (THz) frequency range by metallic 2D MXene Ti3C2Ty make it a promising material for electromagnetic interference shielding, THz detectors, and transparent conducting electrodes. Here, we demonstrate that ultrafast optical pulses with wavelengths straddling the visible range (400 and 800 nm) induce transient broad-band THz transparency in the MXene that persists for nanoseconds. We demonstrate that optically induced transient THz transparency is independent of temperature from 95 to 290 K. This discovery opens new possibilities for development of switchable electromagnetic interference shielding materials and devices that can be rendered partially transparent on demand for transmitting THz signals, or for designing new THz devices such as sensitive optically gated detectors. |
| Databáze: | OpenAIRE |
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