da Silva Wenderson R F, Rodrigues-Junior Gilberto, de Araújo Eduardo N D, Pereira-Andrade Everton, Malachias Ângelo, Mendes Joaquim B S
Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brasil.
Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brasil.
ACS Appl Bio Mater. 2025 Mar 17;8(3):1997-2002. doi: 10.1021/acsabm.4c01488. Epub 2025 Jan 29.
This study investigates the functionalization of gold-coated magnetoelastic sensors with thionine molecules, focusing on resonance frequency shifts. The functionalization process was characterized by using Raman spectroscopy and analyzed via scanning electron microscopy and atomic force microscopy, revealing the progressive formation of molecular clusters over time. Our results demonstrate that longer functionalization time leads to saturation of surface coverage and cluster formation, impacting the sensor's resonance frequency shifts. Such modifications offer insights into the adsorption process of these molecules on the sensor's gold surface, as well as its performance.
本研究调查了用硫堇分子对金涂层磁弹性传感器进行功能化的情况，重点关注共振频率的变化。通过拉曼光谱对功能化过程进行了表征，并通过扫描电子显微镜和原子力显微镜进行了分析，结果显示随着时间的推移分子簇逐渐形成。我们的结果表明，更长的功能化时间会导致表面覆盖饱和以及簇的形成，从而影响传感器的共振频率变化。这些修饰为这些分子在传感器金表面的吸附过程及其性能提供了见解。
