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An 8-pixel quartz crystal resonator array with a fundamental resonance frequency of 73 MHz has been designed and fabricated. We established a protocol for selectively functionalizing the surface of resonator array via electrochemical desorption. The creation of hydrophobic and hydrophilic surface with methyl terminated and carboxylate terminated alkanethiols is characterized by Fourier transform spectroscopy...
Piezoelectric quartz crystal impedance (PQCI) analysis was applied to study the binding of L-tryptophan to human serum albumin (HSA), which was immobilized on the matrix of bare gold elelctrode/chitosan/glutaraldehyde/cysteamine/nanogold particles to maintain biocompatibility, increase capacity and allow renewing the electrode. The real-time course of the resonant frequency and equivalent circuit...
We have constructed a piezoelectric sensor matrix with the capability of measuring the flexibility of immunoglobulin. The matrix consisted of 6 independent quartz crystal microbalance (QCM) coated with gold nanoparticles (GNP) of 3.5, 5, 12, 17, and 37 nm, and BSA. The detection was performed simultaneously. Antiserum against GNP bound to QCMs coated with 3.5 nm GNP and maximized for 5 nm GNP-coated...
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