Moreover, the application modes and functional characteristics of the ultralow density aerogel in the fields of space exploration, fire and heat resistantance, energy storage, adsorption, catalysis and sensing are discussed. By discussing the existing problems of the current research, perspectives of the ultralow density aerogel, such as breaking through the ambient drying method, carrying out the fabrication of composite aerogel or ultralow density aerogel with controlled structure, systematic studying the influence of the super lightweight property on specific functions are also presented.
Progress in Chemistry. Earlier issues. Progress in Chemistry , Vol. Richhtml 38 PDF Cited. Contents 1 Introduction. Key words: aerogel, ultralow density, high porosity, porous material, sol-gel, energy storage. Copyright , American Association for the Advancement of Science. Copyright , American Chemical Society. Copyright , Wiley. Copyright , Springer Nature. Kistler S S. Non-Cryst Solids, , Solids, , Atomic Energy Science and Technology, , 1: Solids, , 1.
Science, , ACS Nano, , 9 5 : Small, , ACS Nano, , 8 6 : ACS Appl. Mater Interfaces, , 8: Aerogels feel like styrofoam, but look like "frozen smoke". The terms heavy and light are commonly used in two different ways. We refer to weight when we say that an adult is heavier than a child. On the other hand, something else is alluded to when we say that styrofoam is heavier than an aerogel.
A small sample of styrofoam would obviously weigh less than a roomful of aerogel, but styrofoam is heavier in the sense that a piece of given size weighs more than the same-size piece of balsa. What we are actually comparing is the mass per unit volume , that is, the density. In order to determine these densities, we might weigh a cubic centimeter of each material. If the styrofoam weighed 0. Note that the negative exponent in the units cubic centimeters indicates a reciprocal.
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