About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
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| Presentation Title |
Development of Femtosecond Laser-Based Purification Techniques of High-Purity Quartz for Industrial Energy Applications |
| Author(s) |
Arish Naim, Subhash Hanamant Risbud |
| On-Site Speaker (Planned) |
Arish Naim |
| Abstract Scope |
Statement of the Problem: As the global community strives for carbon neutrality by 2050, with nearly a quarter of global emissions stemming from direct industrial processes, developing zero-carbon alternatives for processes like silica purification and thereby silicon production is crucial. An investigation was conducted on raw silica sand containing impurities at a concentration of 306 ppm. The objective was to study the effects of direct femtosecond laser pulse irradiation on SiO₂ to ablate the impurities without any additional chemical and mechanical processes.
The laser parameters in this study were carefully optimized to achieve the desired outcomes of impurity ablation and vaporization from the silica matrix. A constant ablation threshold fluence of approximately 0.13 J/mm˛/s was observed for 80 fs pulse durations across different irradiation time intervals.
The laser treatment resulted in enhanced crystallinity and removed the impurities by giving us 99.99% pure SiO2 |