Self-motion of a camphoric acid boat sensitive to the chemical environment
Literature Information
Yuko Hayashima, Masaharu Nagayama, Yukie Doi, Satoshi Nakata, Maya Kimura, Masayasu Iida
As a simple example of an autonomous motor, the characteristic patterns in the self-motion of a camphoric acid boat depending on the chemical environment were investigated at the air/aqueous interface. The uniform motion of a camphoric acid boat changed to intermittent motion and its period increased depending on the concentration of phosphate ions. The nature of the self-motion changed reversibly with the addition of chemical stimuli to the air/aqueous interface. The camphoric acid layer adsorbed on a mica surface was observed by atomic force microscopy (AFM) to investigate how the microscopic state of the camphoric acid layer varied with pH. The nature of the self-motion was reproduced by a numerical calculation in relation to the surface tension, which depends on the surface concentration of the camphoric acid layer.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











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