US7771609-B2  Katti, Atul , et al., "Chemical, physical and mechanical characterization of isocyanate cross-linked amine-modified silica aerogels", Chem. Mater., ASAP, Article No. 10.1021/cm0513841 S0897-4756(05)01384-0,(Jun. 2005),12 pgs.;  Leventis, Nicholas , et al., "Nanoengineering strong silica aerogels", Nano Letters, 2(9), (2002),957-60.;  Zhang, Guohui , et al., "Isocyanate-crosslInked silica aerogel monoliths: preparation and characterization", Journal of Non-Crystalline Sodids 350, (2004),152-64.;  Armand, A. C., et al., "Caracterisation Acoustique et Mecanique des Aerogels de Silice [Acoustic and Mechanical Characterization of Silica Aerogels]", Journal de Physique IV, Colloque C1. supplement au Journal de Physique III, vol. 2, (1992), C1-759-C1-762.;  Brueesch, P., et al., "Electrical and Infrared Dielectrical Properties of Silica Aerogels and of Silica-Aerogel-Based Composites", Applied Physics A_Solids and Surfaces, (1993), 329-337.;  Buettner, D., et al., "Thermal Loss Coefficients of Low-Density Silica Aerogel Tiles", Solar Energy, 40(1), (1988), 13-15.;  Caps, R., et al., "Thermal Transport in Monolithic Silica Aerogel", Revue de Physique Appliquee, Colloque C4, supplement au No. 4, (1989), C4-113-C4-118.;  Courtens, E., et al., "Structure and Dynamics of Silica Aerogels", Philosophical Magazine B, 65(2), (1992), 347-355.;  Cross, J. , et al., "Mechanical Properties of SiO2_Aerogels", Revue de Physique Appliquee, Colloque C4, Supplement au No. 4, (1989), C4-185-C4-190.;  Da Silva, A., et al., "Properties of Water Adsorbed in Porous Silica Aerogels", Journal of Non-Crystalline Solids, 145, (1992), 168-174.;  Damrau, U., et al., "29Si MAS-NMR Investigations of Silica Aerogels", Journal of Non-Crystalline Solids, 145, (1992), 164-167.;  Devreux, F., et al., "NMR Determination of the Fractal Dimension in Silica Aerogels", Physical Review Letters, 65(5), (1990), 614-617.;  Ehrburger-Dolle, F., et al., "Relations Between the Texture of Silica Aerogels and Their Preparation", Journal of Non-Crystalline Solids, 186, (1995), 9-17.;  Emmerling, A., et al., "Relationship Between Optical Transparency and Nanostructural Features of Silica Aerogels", Journal of Non-Crystalline Solids, 185, (1995), 240-248.;  Emmerling, A. , et al., "Structural Modifications of Highly Porous Silica Aerogels Upon Densification", J. Appl. Cryst., 24 (1991), 781-787.;  Gross, J., et al., "Mechanical Properties of SiO2 Aerogels", J. Phys. D: Appl. Phys., 21, (1988), 1447-1451.;  Gross, J., et al., "Ultrasonic Evaluation of Elastic Properties of Silica Aerogels", Materials Science and Engineering A, 168, (1993), 235-238.;  Gross, J., et al., "Ultrasonic Velocity Measurements in Silica, Carbon and Organic Aerogels", Journal of Non-Crystalline Solids, 145, (1992), 217-222.;  Hdach, H. , et al., "Effect of Aging and pH on the Modulus of Aerogels", Journal of Non-Crystalline Solids, 121, (1990), 202-205.;  Hench, L. L., et al., "The Sol-Gel Process", Chemical Reviews, 90(1), (1990), 33-72.;  Hrubesh, L. W., et al., "Thermal Properties of Organic and Inorganic Aerogels", J. Mater. Res., 9(3), (1994), 731-738.;  Hrubesh, L. W., et al., "Thin Aerogel Films for Optical, Thermal, Acoustic, and Electronic Applications", UCRL-JC-117553 Preprint, International Symposium on Aerogels 4, (Sep. 19-21, 1994, Berkeley, CA),(Sep. 1994), 17 pgs.;  Husing, N., et al., "Aerogels_Airy Materials: Chemistry, Structure, and Properties", Angewandt Chemie International Edition, 37, (1998), 22-45.;  Jang, K. Y., et al., "Study of Sol-Gel Processing for Fabrication of Hollow Silica-Aerogel Spheres", J. Vac. Sci. Technol. A, 8(3), (May/Jun. 1990), 1732-1735.;  Kim, N. K., et al., "Fabrication of Hollow Silica Aerogel Spheres by a Droplet Generation Method and Sol-Gel Processing", J. Vac. Sci. Technol. A, 7(3), (1989), 1181-1184.;  Morris, C. A., et al., "Silica Sol as a Nanoglue: Flexible Synthesis of Composite Aerogels", Science, 284, (1999), 622-624.;  Novak, B. M., et al., "Low-Density, Mutually Interpenetrating Organic-Inorganic Composite Materials via Supercritical Drying Techniques", Chem. Mater., 6, (1994), 282-286.;  Pajonk, G. M., "Some Catalytic Applications of Aerogels for Environmental Purposes", Catalysis Today, 52, (1999), 3-13.;  Phalippou, J., et al., "Fracture Toughness of Silica Aerogels", Revue de Physique Appliquee, Colloque C4, Supplement au No. 4, (1989), C4-191-C4-196.;  Phalippou, J., et al., "Glasses From Aerogels_Part 1. The Synthesis of Monolithic Silica Aerogels", Journal of Materials Sciences, 25(7), (1990), 3111-3117.;  Posselt, D., et al., "The Thermal Conductivity of Silica Aerogel in the Phonon, the Fracton and the Particle-Mode Regime", Europhysics Letters, 16(1), (1991), 59-65.;  Rogacki, G. , et al., "Diffusion of Ethanol-Liquid CO2 in Silica Aerogel", Journal of Non-Crystalline Solids, 186, (1995), 73-77.;  Schaefer, D. W., et al., "Structure and Topology of Silica Aerogels", Journal of Non-Crystalline Solids, 145, (1992), 105-112.;  Sleator, T., et al., "Low-Temperature Specific Heat and Thermal Conductivity of Silica Aerogels", Physical Review Letters, 66(8), (1991), 1070-1073.;  Tsou, P., "Silica Aerogel Captures Cosmic Dust Intact", Journal of Non-Crystalline Solids, 186, (1995), 415-427.;  Tullo, A. H., "Stiff Competition_Long-Fiber-Reinforced Thermoplastics are Gathering Strength in Key Industries", Chem.&Eng. News, (Jan. 28, 2002), 21-22.;  Woignier, T., et al., "Different Kinds of Fractal Structures in Silica Aerogels", Journal of Non-Crystalline Solids, 121, (1990), 198-201.;  Woignier, T., et al., "Glasses From Aerogels. Part 2_The Aerogel-Glass Transformation", (1990), 3118-3126.;  Woignier, T., et al., "Mechanical Strength of Silica Aerogels", Journal of Non-Crystalline Solids, 100, (1988), 404-408.;  Woignier, T., et al., "Scaling Law Variation of the Mechanical Properties of Silica Aerogels", Revue de Physique Appliquee, Colloque C4, Supplement au No. 4, (1989), C4-179-C4-184.;  Woignier, T., et al., "Section 13. Rheological, Mechanical and Other Properties_Evolution of Mechanical Properties During the Alcogel-Aerogel-Glass Process", Journal of Non-Crystalline Solids, 147&148, (1992), 672-680.;  Yim, T.-J., et al., "Fabrication and Thermophysical Characterization of Nano-Porous Silica-Polyurethane Hybrid Aerogel by Sol-Gel Processing and Supercritical Solvent Drying Technique", Korean J. Chem. Eng. 19(1), (2002), 159-166.