Raman mapping of laser-induced changes and ablation of InAs nanowires
| العنوان: | Raman mapping of laser-induced changes and ablation of InAs nanowires |
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| المؤلفون: | Da-Ming Zhu, Ning Dai, Pingping Chen, Wei Lu, Jia-Yu He |
| المصدر: | Applied Physics A. 115:885-893 |
| بيانات النشر: | Springer Science and Business Media LLC, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | inorganic chemicals, Materials science, Laser ablation, business.industry, Scanning electron microscope, medicine.medical_treatment, Nanowire, Analytical chemistry, chemistry.chemical_element, General Chemistry, Ablation, Laser, law.invention, symbols.namesake, chemistry, law, symbols, medicine, Optoelectronics, General Materials Science, Irradiation, business, Raman spectroscopy, Indium |
| الوصف: | Indium arsenic (InAs) nanowires were irradiated with a focused laser beam, followed by in situ Raman spectroscopy mapping and scanning electron microscopy imaging to investigate the changes of the nanowires due to laser irradiation. It was found that laser irradiation with the power intensity above a certain threshold causes arsenic (As) atoms to disintegrate from InAs and accumulate on the surface of the nanowire; the accumulated As atoms evaporate under the continued laser irradiation. This process reduces the As content in the nanowire. The reduction of As content, in turn, lowers the melting temperature of the nanowire locally and facilitates laser ablation, which eventually fractures the nanowire. The laser irradiation induced changes of the InAs nanowires are attributed to the local temperature rises due to the irradiation, as confirmed by the Raman peak shifts. The results from this work show that in situ Raman spectroscopy mapping can provide detailed information about the entire process of laser-induced change and ablation of InAs nanowires and has the potential to become a powerful tool for the characterization of laser modification of nanowires and other nanometer-sized objects. |
| تدمد: | 1432-0630 0947-8396 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::b4b94c998315edac238c49e82a6aafbfTest https://doi.org/10.1007/s00339-013-7884-zTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........b4b94c998315edac238c49e82a6aafbf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14320630 09478396 |
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