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실버코팅된 수산화 알루미늄의 젖음성 및 광학적 특성 원문보기

  • 초록

    In this study, plasmonic nanostructures based on large-area aluminum hydroxide (AlOH3) nanostructures were fabricated with a low cost and high-troughput process. Optical property and wettability characterizations were performed for the plasmonic nanostructures. First, an aluminum hydroxide nanostructure was fabricated using industry aluminum via a wet process, and a silver coating process was added to induce a plasmonic characteristic. The silver was deposited at various thicknesses (5, 10, 20, 30 and 70 nm) through thermal evaporation. Then the optical property and wettability were analyzed via contact angle and UV-vis. spectrometry. The contact angles had a broad range of values between 22° and 155° according to the deposited thickness of silver (tAg). The optical property showed broad and multiple light absorption within the visible wavelength by multipoles such as dipole, quadrupole and octupole resonance. Finally, it could be found that surface-enhanced Raman scattering (SERS) enhancement factor reached to 105 times compared with that of a silicon substrate. Based on these results, we expect that our large-area plasmonic nanostructure could be applied in the various applications such as biomolecular optical sensors, solar cells, etc.


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