Metal-Organic Framework 'Swimmers' with Energy-Efficient Autonomous Motility
| Autor: | Steve Granick, Konstantin Polev, Bartosz A. Grzybowski, Jun Heuk Park, Slawomir Lach |
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| Rok vydání: | 2017 |
| Předmět: |
Collective behavior
Materials science General Engineering General Physics and Astronomy Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Surface tension General Materials Science Metal-organic framework Wetting 0210 nano-technology High kinetic energy Efficient energy use |
| Zdroj: | ACS nano. 11(11) |
| ISSN: | 1936-086X |
| Popis: | Placed at a water/air interface, particles of porphyrin-based MOFs (metal–organic frameworks) cut from large-area films display efficient, multiple-use autonomous motility powered by release of solvents incorporated in the MOF matrix and directionality dictated by their shapes. The particles can be refueled multiple times and can achieve speeds of ca. 200 mm·s–1 with high kinetic energy per unit of chemical “fuel” expended (>50 μJ·g–1). Efficiency of motion depends on the nature of the fuel used as well as the microstructure and surface wettability of the MOF surface. When multiple movers are present at the interface, they organize into “open” structures that exhibit collective, time-periodic motions. |
| Databáze: | OpenAIRE |
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