1. Sol-gel: Past to present

   Editorial Pages: 5 - 6

2. Nonlinear optical materials by the sol-gel method

   • John D. Mackenzie

   OriginalPaper Pages: 7 - 19

3. Redox reactions in transition metal oxide gels

   • J. Livage

   OriginalPaper Pages: 21 - 33

4. Polymerization-induced phase separation in silica sol-gel systems containing formamide

   • Hironori Kaji
   • Kazuki Nakanishi
   • Naohiro Soga

   OriginalPaper Pages: 35 - 46

5. The role of precursors in the structure of SiO₂-Al₂O₃ sols and gels by the sol-gel process

   • Morinao Fukuoka
   • Yoshito Onoda
   • Akio Makishima

   OriginalPaper Pages: 47 - 56

6. Co-hydrolysis products of tetraethoxysilane and methyltriethoxysilane in the presence of tetramethylammonium ions

   • Isao Hasegawa

   OriginalPaper Pages: 57 - 63

7. Technological significance of sol-gel process and process-induced variations in sol-gel materials and coatings

   • Bulent E. Yoldas

   OriginalPaper Pages: 65 - 77

8. Formation of quantum-size PbTe microcrystals in sol-gel derived silica and borosilicate glasses

   • Guangming Li
   • Masayuki Nogami

   OriginalPaper Pages: 79 - 83

9. Synthesis and spectroscopy of tpps-doped silica gels by the sol-gel process

   • Kazutaka Kamitani
   • Motohiro Uo
   • Akio Makishima

   OriginalPaper Pages: 85 - 92