Syafiq Affandi | Universiti Teknologi Malaysia - UTM (original) (raw)
Address: Johor Bahru, Johor, Malaysia
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The closeness of the experimental and theoretical values enables the development of an in situ ch... more The closeness of the experimental and theoretical values enables the development of an in situ characterization technique to monitor and analyze the production of gold nanoparticles (NPs), overcoming the use of high-end and expensive instrumentation. Gold NPs below the radius size of 10 nm were successfully synthesized in accordance with a few working parameters of pulse laser ablation in a liquid technique. In this report, the size, shape, concentration, and aggregation properties of gold NPs were estimated by the Mie–Gans model based on a reliable and interactive real-time absorption spectroscopy. The major features can be an important means toward determination of efficient process measures, productivity of gold NPs generated, and efficiency of the mass ablation rate. The accuracy in the measurement is confirmed via transmission electron microscopy analysis.
The correlation between mode locked pulse and its corresponding femtosecond generation are report... more The correlation between mode locked pulse and its corresponding femtosecond generation are reported. A non-self starting Ti:sapphire laser was aligned to induce mode locked pulse. The cavity length was adjusted in the range from 104 to 105 mm to stabilize the mode locked pulse train. The mode locked pulse was recorded via high speed oscilloscope at various cavity lengths in the stability region. The corresponding femtosecond pulse generation was simultaneously measured via autocorrelator. This is referred as conjugate method. The result shows that the femtosecond pulse found to be having a linear relationship with mode locked pulse with the conversion efficiency achieved up to 8%.
The closeness of the experimental and theoretical values enables the development of an in situ ch... more The closeness of the experimental and theoretical values enables the development of an in situ characterization technique to monitor and analyze the production of gold nanoparticles (NPs), overcoming the use of high-end and expensive instrumentation. Gold NPs below the radius size of 10 nm were successfully synthesized in accordance with a few working parameters of pulse laser ablation in a liquid technique. In this report, the size, shape, concentration, and aggregation properties of gold NPs were estimated by the Mie–Gans model based on a reliable and interactive real-time absorption spectroscopy. The major features can be an important means toward determination of efficient process measures, productivity of gold NPs generated, and efficiency of the mass ablation rate. The accuracy in the measurement is confirmed via transmission electron microscopy analysis.
The correlation between mode locked pulse and its corresponding femtosecond generation are report... more The correlation between mode locked pulse and its corresponding femtosecond generation are reported. A non-self starting Ti:sapphire laser was aligned to induce mode locked pulse. The cavity length was adjusted in the range from 104 to 105 mm to stabilize the mode locked pulse train. The mode locked pulse was recorded via high speed oscilloscope at various cavity lengths in the stability region. The corresponding femtosecond pulse generation was simultaneously measured via autocorrelator. This is referred as conjugate method. The result shows that the femtosecond pulse found to be having a linear relationship with mode locked pulse with the conversion efficiency achieved up to 8%.