A study found that splitting a laser beam into two pulses and separating them by 126 femtoseconds results in a metastable form of silicon.
A team of researchers from University of California and the University of Kassel in Germany has developed a way to halt the ultra-fast melting of silicon using well-timed lasers. This new technique could open possibilities for controlling material behavior under extreme conditions.The breakthrough could also help improve the accuracy of experiments that study how energy moves through solids.
The experiment revealed that while the initial laser pulse initiates atomic motion, the second pulse disrupts this motion in a way that stops the atoms from losing their ordered arrangement. As a result, the material temporarily stays solid despite having absorbed sufficient energy to trigger melting.
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