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In this paper, an experimental investigation was performed on humidity sensing by using Love wave devices coated with different polymeric layers. The Love wave device consists of two interdigital transducers (IDTs) with a period of 28 μm, an ST-90˚X quartz substrate. Three different films of SU-8, SU-8+PVA and PVA, were spin-coated on the substrate surface by a sol-gel process as the waveguide layer...
A love-wave biosensor has been designed by coupling aptamers to the Au-surface of sensor chip. Aptamers are artificial nucleic acid ligands that can be obtained in the process of SELEX. Aptamers have advantages over antibodies, such as high affinity, specificity, and stability. As Love waves' acoustic energy is confined to a thin near-surface region of substrate by guiding layer, Love wave sensors...
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