Engineering of hydrophilic and plasmonic properties of Ag thin film by atom beam irradiation

► Synthesis of plasmonic surface by atom beam sputtering. ► Tuning of size of nanostructures with fluence. ► Characterization using atomic force microscopy, UV Visible spectroscopy, contact angle measurement and Rutherford backscattering spectroscopy are reported.► Tailoring of contact angle of Ag n...

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Bibliographic Details
Published in:Applied surface science 2011-12, Vol.258 (4), p.1464-1469
Main Authors: Singh, Udai B., Agarwal, D.C., Khan, S.A., Kumar, Manish, Tripathi, A., Singhal, R., Panigrahi, B.K., Avasthi, D.K.
Format: Article
Language:English
Subjects:
Absorbance
Beams (radiation)
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Contact angle
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Hydrophilic property
Irradiation
Nanostructure
Physics
Plasmonics
Power spectral density
Rutherford backscattering spectroscopy
Silver
Sputtering
Surface chemistry
Surface plasmon resonance
Thin films
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Summary:► Synthesis of plasmonic surface by atom beam sputtering. ► Tuning of size of nanostructures with fluence. ► Characterization using atomic force microscopy, UV Visible spectroscopy, contact angle measurement and Rutherford backscattering spectroscopy are reported.► Tailoring of contact angle of Ag nanostructures with surface roughness. ► Areal concentration of Ag is decreased with increase in fluence. Hydrophilic Ag nanostructures were synthesized by physical vapour deposition of 5nm Ag thin films followed by irradiation with 1.5keV Ar atoms. Optical absorbance measurements show a characteristic surface plasmon resonance absorption band in visible region. A blue-shift in absorbance from 532 to 450nm is observed with increasing fluence from 1×1016 to 3×1016atoms/cm2. Atomic force microscopy was performed for the pristine and irradiated samples to study the surface morphology. The atom beam irradiation induced sputtering and surface diffusion lead to the formation of plasmonic surface. Rutherford backscattering spectroscopy of the pristine and irradiated film indicates that metal content in the film decreases with ion fluence, which is attributed to the sputtering of Ag by Ar atoms. The contact angle measurement demonstrates the possibility of engineering the hydrophilicity by atom beam irradiation.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2011.09.105