Role of extrinsic factors on magnetoelastic resonance biosensors sensitivity

• DOI: 10.1088/1361-6501/ad1e1d
• Publication Date: 2024-01-12T22:44:56Z
• Authors: Luiza Felippi de ...; Roberta Dutra; Diego González; Rubem Luis Sommer; Cláudio Antônio P...; Cesar Aguzzoli; Mariana Roesch-Ely
• Keywords: Surface Modification; Instrumentation

Abstract Magnetoelastic (ME) resonance devices are attractive for application as biosensors in health-related areas they allow contactless detection of pathogenic agents with high sensitivity. After functionalization, offer valuable diagnostic options that promote efficient capture mass on the sensor surface through biological interactions. ME sensors also sensitive to external factors such temperature, magnetic fields, and variations can arise from processes unrelated interactions, including corrosion salt crystallization. This article evaluates extrinsic affect response applications. In particular, influence heat treatments, operation applied DC field bias, corrosive environment were studied. The control all these is crucial design, fabrication, functionalization development measuring instrumentation effective measurement protocols. work established maximum operating temperature bias keep Heat treatment before after coating improved signal-to-noise ratio resistance. Further improvement resistance was provided by cathodic protection, which has been proven beneficial applications aqueous fluids.