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제안 방법
- We have observed that remarkable humidity detecting characteristics when LBL self assembled films of polyelectrolytes were formed on the ITO electrode. In this study, the characteristics humidity sensors using various self-assembled humidity-sensitive films were investigated.
- METAC/MMA shows higher resistance than that of homopolymer PMETAC as shown in the Figure 7. The LBL membranes obtained from hydrophilic monomer PEGMA and METAC copolymer were used as humid membrane and their humidity-sensitive characteristics were evaluated. PEGMA is more hydrophilic than MMA, because of more ethylene oxide repeating unit, therefore it has the advantage being able to adsorb water molecules more effectively.
- The copolymerization of cationic monomer with hydropho bic comonomers influenced the content of cation of multi layer, which in turn caused the ability of the adsorption and desorption of moisture to change. The humidity-sensitive properties of the multilayer controlled by copolymerization with MMA and PEGMA were observed by measuring the resistance dependence vs. relative humidity. The multilayer obtained from the copolymers of METAC showed various characteristics from one another as shown in Figure 7.
- Patterning of ITO. The patterning of ITO was carried out by the following processes: photo resist coat, pre-bake, UV exposure, photo resist develop, hard bake, ITO etching and photo resist removal procedures. Photo resist was coated onto the ITO plate by silk-printing method to transfer the electrode pattern to the ITO glass.
대상 데이터
- 0%)=4/2/1 (v/v/v) was obtained from Cyntec Corporation (USA). Hydrogen peroxide (30%, Duk san Chem. Co.) and ammonia water (30%, Duksan Chem. Co.) were used. All solutions were prepared using deionized water.
- Photo cross-linking reac tion was carried oot using tube lamp (VL-6-LC, 365 nm, 6 W, EEC, USA). ITO etching agent (LCE-12k, HC1(36.5~37.5 %)/H2O/HNO3 (7 0.0%)=4/2/1 (v/v/v) was obtained from Cyntec Corporation (USA). Hydrogen peroxide (30%, Duk san Chem.
- #70, 000) were used as received. ITO glass was used (Samsung Coming Co. LTD., STN-LCD use, thickness, 0.70 mm, 20 Q/ □, ITO thickness, 1, 200 A). Tohaene, etha nol and ethyl acetate (Duksan Chem.
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