Journal
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
Volume 93, Issue 9, Pages 1079-1085Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.20200134
Keywords
Single molecule imaging; Molecular shuttle; Transmission electron microscopy
Categories
Funding
- MEXT [KAKENHI 19H05459]
- Japan Science and Technology Agency [SENTAN JPMJSN16B1]
- National Science Foundation [1713989, 1533969]
- Virginia Tech National Center for Earth and Environmental Nanotechnology Infrastructure (NanoEarth) (NSF ECCS) [1542100]
- ALPS program (MEXT)
- Japan Society for the Promotion of Science (JSPS)
- Alexander von Humboldt Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1533969] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1542100] Funding Source: National Science Foundation
- Office Of The Director
- Office Of Internatl Science &Engineering [1713989] Funding Source: National Science Foundation
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Miniaturized machines have open up a new dimension of chemistry, studied usually as an average over numerous molecules or for a single molecule bound on a robust substrate. Mechanical motions at a single molecule level, however, are under quantum control, strongly coupled with fluctuations of its environment-a system rarely addressed because an efficient way of observing the nanomechanical motions in real time is lacking. Here, we report sub-millisecond sub-A precision in situ video imaging of a single fullerene molecule shuttling, rotating, and interacting with a vibrating carbon nanotube at 0.625 milliseconds(ms)/frame or 1600 fps, using an electron microscope, a fast camera, and a denoising algorithm. We have achieved in situ observation of the mechanical motions of a molecule coupled with vibration of a carbon nanotube with standard error as small as 0.9 millisecond in time and 0.01 nm in space. We have revealed rich molecular dynamics, where motions are non-linear, stochastic and often non-repeatable, and a work and energy relationship at a molecular level previously undetected by time-averaged measurements or microscopy. The molecular video recording at a 1600-fps rate exceeds by 100 times the previous records of continuous recording of molecular motions.
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