Single-molecule laser nanospectroscopy with micro–electron volt energy resolution
| Autor: | Takeshi Iwasa, Yuichiro K. Kato, Kuniyuki Miwa, Yousoo Kim, Masanobu Uchiyama, Naoyuki Toriumi, Tetsuya Taketsugu, Kensuke Kimura, Yusuke Tanaka, Hidemasa Yamane, Miyabi Imai-Imada, Atsuya Muranaka, Hajime Ishihara, Hiroshi Imada, Nobuhiko Yokoshi |
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| Rok vydání: | 2021 |
| Předmět: |
Multidisciplinary
Materials science business.industry Resolution (electron density) 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention symbols.namesake Stark effect law Excited state 0103 physical sciences symbols Optoelectronics Scanning tunneling microscope 010306 general physics 0210 nano-technology business Luminescence Quantum tunnelling Plasmon |
| Zdroj: | Science. 373:95-98 |
| ISSN: | 1095-9203 0036-8075 |
| Popis: | Single-molecule nanospectroscopy Microscopic understanding and molecular-level control of individual electronic quantum states of a single molecule are a long-standing challenge in spectroscopy. Imada et al. found that a narrow-line tunable laser combined with a scanning tunneling microscope was able to generate photoluminescence spectra of the electronic and vibrational states of single molecules with micro–electron volt energy resolution and submolecular spatial resolution. The authors also discovered a way to tune the energy levels through a linear Stark effect and plasmon-exciton coupling in the tunneling junction. The proposed technique paves the way to efficient exploitation of energy conversion dynamics in electronic excited states, which constitutes the bedrock principle of such systems as LEDs, photovoltaics, and photosynthetic cells. Science , abg8790, this issue p. 95 |
| Databáze: | OpenAIRE |
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