| http://www.w3.org/ns/prov#value | - faces, wherein the bonding between the first and second non-perforated glass pieces is effected without use of temperatures greater than 90??? C., wherein the bonding agent is sodium silicate, silicic acid, polymeric forms of silicic acid, alkoxysilane, silane, or tetramethoxysilane; and at least one microchannel located on the mating surfaces of the glass pieces, wherein the at least one microcha
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