An ink containing a water, a water-soluble organic solvent, a dye, and a betaine compound, which optionally further contains a nonionic surfactant or at least one another betaine compound.

 
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< Apparatus for continuous liquid flow in microscale channels using wicking

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> Preparation of a multimetal oxide material

> Microchannel apparatus, methods of making microchannel apparatus, and processes of conducting unit operations
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