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An example of a prototype for a synthetic chemically driven rotary molecular motor was reported by Kelly and co-workers in 1999. [5] Their system is made up from a three-bladed triptycene rotor and a helicene, and is capable of performing a unidirectional 120° rotation. This rotation takes place in five steps.
This motor is driven by the flow of protons across a membrane, possibly using a similar mechanism to that found in the F o motor in ATP synthase. Molecular dynamics simulation of a synthetic molecular motor composed of three molecules in a nanopore (outer diameter 6.7 nm) at 250 K. [4] Nucleic acid motors: RNA polymerase transcribes RNA from a ...
The single-molecule electric motor is an electrically operated synthetic molecular motor made from a single butyl methyl sulphide molecule. [1] The molecule is adsorbed onto a copper (111) single-crystal piece by chemisorption. [1]
The main product of the Fischer–Tropsch process, synthetic crude oil, requires additional refining to produce fuel products such as diesel fuel or gasoline. This refining typically adds additional costs, causing some industry leaders to label the economics of commercial-scale Fischer–Tropsch processes as challenging.
A proposed branch of research is the integration of molecular motor proteins found in living cells into molecular motors implanted in artificial devices. Such a motor protein would be able to move a "cargo" within that device, via protein dynamics , similarly to how kinesin moves various molecules along tracks of microtubules inside cells.
Unlike a molecular motor, any mechanical work done due to the motion in a switch is generally undone once the molecule returns to its original state unless it is part of a larger motor-like system. The image on the right shows a hydrazone -based switch that switches in response to pH changes.
However, a great deal of current experimental work is devoted to synthetic systems such as artificial self-propelled particles. [ 8 ] [ 9 ] [ 10 ] Active matter is a relatively new material classification in soft matter : the most extensively studied model, the Vicsek model , dates from 1995.
The term "Brownian motor" was originally invented by Swiss theoretical physicist Peter Hänggi in 1995. [3] The Brownian motor, like the phenomenon of Brownian motion that underpinned its underlying theory, was also named after 19th century Scottish botanist Robert Brown, who, while looking through a microscope at pollen of the plant Clarkia pulchella immersed in water, famously described the ...
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