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    The study of nano-structure on in-situ UV laser irradiating GaAs(001) substrate

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    Authors
    Deng, Changwei
    Yang, Linyun
    Miao, Lili
    Yang, Xinning
    Peng, Changsi
    Issue Date
    2018-12-31
    Subjects
    in situ laser irradiation
    
    Metadata
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    Other Titles
    Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
    Abstract
    The AFM study of a series of novel nano-structure on in-situ laser irradiating GaAs(001) substrate in molecular beam epitaxy was presented. Nano-hole, nano-island and nano-ring(Chinese ancient copper coin shape) were observed after laser irradiating. The desorption of Gallium on GaAs surface varies according to different power energy and pulse numbers, leading to the formation of nano-holes, nano-islands and nano-rings. It is speculated that these nanostructures are galliumrich through the change of the RHEED stripe. What’s more, the desorption of defectless GaAs sub-monolayer was discovered, and matched dynamic evolution model (self-drilling effect dominated by Ga atom) was presented. The dependence of the temperature on the surface of the substrate with time was studied after laser irradiating according to the heat conduction equation. The drastic temperature changes caused non-thermodynamic equilibrium process which makes these morphologies.
    Citation
    Deng C, Yang L, Miao L, Yang X, Peng C (2018) 'The study of nano-structure on in-situ UV laser irradiating GaAs(001) substrate', SPIE 10827, Sixth International Conference on Optical and Photonic Engineering - , SPIE.
    Publisher
    SPIE
    URI
    http://hdl.handle.net/10547/624244
    DOI
    10.1117/12.2500785.short?SSO=1
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10827/1082729/The-study-of-nano-structure-on-in-situ-UV-laser/10.1117/12.2500785.short?SSO=1
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2500785.short?SSO=1
    Scopus Count
    Collections
    Computing

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