期刊
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
卷 127, 期 11, 页码 1231-1235出版社
ASME
DOI: 10.1115/1.2039110
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An analytical and experimental investigation on the features created on silicon by, the irradiation of microspheres on the substrate surface with a pulsed laser is presented. Silica microspheres of 1:76 urn diameter are deposited oil the silicon substrate and are irradiated with a pulsed Nd:YAG laser of wavelength 532 nm. An analytical model based on Mie theory is developed, which includes all evanescent terms and does not rely on either far-field or size-parameter approximations. The predicted intensity distributions on the substrate indicate a strong near-field enhancement confined to a very small area (nanometer scale). A multidimensional, numerical model was built to simulate the heat transfer through the silicon. An explicit scheme of the enthalpy method was employed to track the solid/liquid phase boundary The experiment was performed for various laser energies used in the modeling, and the features obtained are characterized using a scanning electron microscope. The experimental results correlate well with the predicted results.
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