Generation of pseudo-microgravity by using high magnetic field and and its application for functional molecular systems

利用15T和1500Pim超导磁体产生的垂直磁场，研究了磁场对化学和物理特性的影响。1.樱桃西红柿、水、青蛙等被磁铁磁悬浮。塑料芯片被磁悬浮和分离。磁悬浮是解决抗磁材料分离和悬浮性测量的一种有效技术。2.利用强磁场控制苯和水的光刻蚀热对流。磁场是控制地球重力现象的一种方便的工具。由于温度和浓度引起的对流。在磁场的辅助下，用硅酸盐花园反应制备了膜管，并在膜管中诱导了三维手性。结果用边界辅助磁流体力学机制进行了解释。4建议用强磁场对吗啡纳米棒、对苯二酚纳米棒、微管蛋白等进行定向，说明磁场对纳米结构控制是有用的。5.磁场影响光化学沉积在钛微粒上的钴离子的氧化状态，但其作用机理尚不清楚。6.磁场对介孔二氧化硅中的光化学反应有显著影响。其机理可用自由基对机理解释。这强烈表明，溶液在孔隙中的流体动力学与在牛皮泥中的流体动力学有很大的不同。总之，磁场对于材料科学来说是一种全新的物理环境。

Magnetic field effects (MFEs) on chemical and physical prooses were reseatched by using vertical magnetic fields generated by a 15 T and 1500 Pim superconducting magnet. 1. Cherry tomato, water, frog, and others are magnetically levitated by the magnet. Plastic chips are magnetically levitated and separated. Magnetic levitation is a useful technique fix separation of diamagnetic materials and cliainagnetic susoeptibility measurement. 2. Photoinchred thermal convection of benzene and water is controlled by application of high magnetic field. Magnetic field is a convenient tool for controlling Earth gravity-chiven phenomena sucb. as thermal and concentration induced convection. a With the aid of magnetic field, 3D-mcaphological chirality is induced in membrane tubes prepared by a silicate garden reaction. The results are explained by a boundary-assisted magnetohydrodynamics mechanism. 4 It is suggested to orient phorphine nanorods, tbiophene nanodusters, microtubulin and others using high magnetic fields, indicating that magnetic field is useful for nanostructure cont al. 5. Magnetic field influences oxidation state of cobalt ion photochemically deposited on titanium micropartides, though its mechanism is not clarified. 6. Photochemical reaction in mesoporous silica is significantly afiected by a magnetic field. Its mechanism is explainable by the radical pair mechanism. It is strongly suggested the hydrodynamics of the solution in the pore is very different from that in bullc. solution.In conclusion, it is shown that magnetic field is a brand-new physical environment useful for materials science.