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ÎÄÕÂÖеÄÖÆ×÷²½ÖèÊÇÕâÑùµÄ£ºThe sponges are prepared using a manufacturing technique in which a sugar scaffold is used to mould an elastomeric polymer, in this case (poly)dimethylsiloxane (PDMS). A small glass dish was coated with a thin layer of gold using a sputter coater to facilitate the easy removal of cured PDMS. SYLGARD® 184 Silicone Elastomer from Dow Corning was prepared in the glass dish using 10 parts base to one part curing agent by volume. Sugar cubes were placed in the dish, and left for 1 hour to become saturated with PDMS. The cubes were then cured in an oven at 120 ¡ãC for 15 minutes, removed and allowed to cool. Excess PDMS was trimmed away, and the cubes put in a beaker of distilled water to dissolve the sugar. Approximately 24 hours were allowed for this process to occur. The water was changed several times during this period to maintain a high concentration gradient between the cube and the water, and thus increase the rate of dissolution. ´ó¸ÅÒâ˼ÊÇ£º½«·½ÌǺÍPDMS»ìºÏÔÚÒ»Æð£¬´ýPDMS¹Ì»¯ÒÔºó£¬ÔÙ½«·½ÌÇÈܽ⣬Ðγɶà¿×µÄPDMS£¬µ«ÊǾßÌå²Ù×÷ºÃÏñºÜÄÑ£¬ËùÒÔÏ£ÍûÄÄλ¸ßÊÖÖ¸µãһϠ|
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