A low-cost, environment friendly and easily fabricated SERS-active substrate with low background signals has been developed by hydrothermal treatment of titanium thin films deposited on silicon substrate. Results from the experimental study revealed that Rhodamine 6G can be well resolved using gold-coated hydrothermally roughened TiO2 substrates. The effect of surface enhancement by the hydrothermally roughened substrates enables rapid identification of Rhodamine 6G, and the enhancement capability is controllable by tuning the surface roughness of the substrates through varying treatment duration. The hydrothermally treated TiO2 substrates also exhibit tunable wettability like that of the untreated ones.
机构:
Taipei Med Univ Hosp, Dept Internal Med, Div Gastroenterol, Taipei 11031, TaiwanTaipei Med Univ, Coll Med, Sch Med, Dept Biochem, Taipei 11031, Taiwan
Chang, Chun-Chao
Hsu, Ting-Chu
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机构:
Vanung Univ, Gen Educ Ctr, Chung Li City, Taiwan
Vanung Univ, Nano Mat Applicat R&D Ctr, Chung Li City, TaiwanTaipei Med Univ, Coll Med, Sch Med, Dept Biochem, Taipei 11031, Taiwan
机构:
Vanung Univ, Dept Chem & Mat Engn, Chung Li City, Taiwan
Vanung Univ, Nano Mat Applicat R&D Ctr, Chung Li City, TaiwanTaipei Med Univ, Coll Med, Sch Med, Dept Biochem, Taipei 11031, Taiwan