Room-Temperature Synthesis of Aragonite Crystals at an Expanding Liquid–Liquid Interface in a Radial Hele–Shaw Cell


  • DR thanks the Department of Science and Technology (DST), Govt. of India for financial support.


Large quantities of extremely fine aragonite needles (see Figure, top image) have been synthesized at room temperature at an expanding liquid–liquid interface in a radial Hele–Shaw cell. By simple variation of the experimental conditions, hollow, cylindrical aragonite/calcite crystals (see Figure, bottom image) may also be obtained. It is believed that this method can be extended to other materials and nanostructures.