Liquid marbles Liquid marbles provide a new approach to transport liquid mass on the solid surface, which sufficiently transform the inconvenient glass containers into flexible, user-specified hydrophobic coating composed of powders of hydrophobic materials. Since then, the applications of liquid marbles in no-loss mass transport, microfluidics and microreactors have been extensively investigated. However, liquid marbles only reflect the water behavior at the solid-air interface, while there is no report on the water behavior at the liquid-liquid interface, as a result of the so-called coalescence cascade phenomenon. When a water droplet is in contact with a water reservoir, it will quickly pinch off
Toy toy safety, every country has its own regulations. But since the globalization and opening of markets, most of them try to harmonize their regulations. The most common action for younger children is to put toys in their mouths. This is why it is of utmost importance to regulate chemicals which are contained in the paintings and other materials children's products are made of. Countries or trade zones such as the European Union regularly publish lists to regulate the quantities or ban chemicals from toys and juvenile products. There have also been issues of toy safety regarding lead paint. Some toy