Growth of micro-crystals in solution by in-situ heating via continuous wave infrared laser light and an absorber
| Autor: | Aditya K. Dharmadhikari, J. A. Dharmadhikari, Shashank Pathak, Deepak Mathur, Arumugam Thamizhavel |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Far-infrared laser Nucleation chemistry.chemical_element Crystal growth Nanotechnology 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper law.invention Inorganic Chemistry chemistry Chemical engineering law 0103 physical sciences Materials Chemistry Continuous wave Laser power scaling 0210 nano-technology Seed crystal |
| Zdroj: | Journal of Crystal Growth. 433:43-47 |
| ISSN: | 0022-0248 |
| Popis: | We report on growth of micro-crystals such as sodium chloride (NaCl), copper sulphate (CuSO 4 ), potassium di-hydrogen phosphate (KDP) and glycine (NH 2 CH 2 COOH) in solution by in-situ heating using continuous wave Nd:YVO 4 laser light. Crystals are grown by adding single walled carbon nanotubes (SWNT). The SWNTs absorb 1064 nm light and act as an in-situ heat source that vaporizes the solvent producing microcrystals. The temporal dynamics of micro-crystal growth is investigated by varying experimental parameters such as SWNT bundle size and incident laser power. We also report crystal growth without SWNT in an absorbing medium: copper sulphate in water. Even though the growth dynamics with SWNT and copper sulphate are significantly different, our results indicate that bubble formation is necessary for nucleation. Our simple method may open up new vistas for rapid growth of seed crystals especially for examining the crystallizability of inorganic and organic materials. |
| Databáze: | OpenAIRE |
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