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A research team, led by Northwestern Universitychemists, has made a breakthrough in surface science by introducing a new active mechanism of adsorption. Such adsorption-based phenomena, in which molecules are attracted onto a solid surface,are essential for today’s catalysts, energy storage and environmental remediation. The research demonstrates how artificial molecular machines — wholly synthetic molecular components that produce machine-like movements — grafted on surfaces can be used to recruit molecules actively onto these surfaces at very high concentrations, thereby storing significant amounts of energy.