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Transfer Printing Water-Soluble Inorganic Salts†
Published 2006 · Materials Science
This paper reports the first example of the fabrication of KNO 3 , K 2 CO 3 , CuSO 4 , NaOH, and mixed-inorganic-salt (KNO 3 and KOH) patterns using a transfer-printing (TP) technique. The transfer quality is found to be related to the concentration of the salt solutions. By varying the immersion time, it is possible to control the height of the raised features of the transfer-printed salts from the nanoseale to the suhmicrometer scale. Utilizing these inorganic sails as water-soluble masks for microfabrication is demonstrated using patterned NaOH films. The use of water as a developer solvent demonstrates the potential utility of the patterning of inorganic salts as a low-cost, simple, and, more importantly. environmentally friendly route towards accurate patterning of different materials.