| AVS 62nd International Symposium & Exhibition | |
| Advanced Surface Engineering | Tuesday Sessions |
| Session SE+PS+SM-TuM |
| Session: | Atmospheric Pressure Plasmas, CVD and Other Deposition Methods |
| Presenter: | Xue Li, Institute of Materials Research and Engineering (IMRE), Singapore |
| Authors: | X. Li, Institute of Materials Research and Engineering (IMRE), Singapore K.S.L. Chong, Institute of Materials Research and Engineering (IMRE) M.S.M. Saifullah, Institute of Materials Research and Engineering (IMRE) R.B. Yang, Institute of Materials Research and Engineering (IMRE) C.S. Lee, Institute of Materials Research and Engineering (IMRE) Y.C. Loke, Institute of Materials Research and Engineering (IMRE) A.Y. He, Loke |
| Correspondent: | Click to Email |
Superhydrophilic surfaces are often exploited for their anti-fog ability and typically rely on coatings which modify the surface energies of the materials to create such effects. Such traditional coatings are often applied wet and are not long lasting. A persistent superhydrophilic coating with both anti-fog and anti-UV properties have been fabricated on polycarbonate (PC) surfaces via a combination of nanoimprint lithography and atomic layer deposition (ALD) process. Nanoimprint lithography was used to pattern anti-reflection (AR) structures on to a PC surface. These samples were then coated with a thin layer titanium dioxide (TiO2) layer via a low temperature ALD process (<80 °C). The PC sample with AR patterns demonstrated enhanced visible light transmittance upto 94% and reduced transmittance in the UV wavelengths (<400 nm). The TiO2 layer is superhydrophilic and the resultant samples showed a persistent superior anti-fog effect. More importantly, the superhydrophilicity can be recycled via rinsing in an oxidant solution, and had demonstrated stability upto 4 months.