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Parameters determination (energy, charge, electric field, shape) of output profiles of HAp-collagen-glucose-based double layer capacitors; possibility for diabetes detection
Sensing and Bio-Sensing Research Pub Date : 2024-02-02 , DOI: 10.1016/j.sbsr.2024.100626
Griselda A. Rivera , Rogelio Rodriguez , Susana Vargas

Numerical values of important parameters associated with a piezoelectric material containing an electrolyte and subjected to external stress were obtained; the applied stress produced, almost instantly, induced charges on the material's surface; these charges move the ions of the electrolyte toward the charged surfaces forming the electric double layer EDL; these two charged surfaces give place to the formation, in the interior of the material, of a particular type of capacitor called double layer capacitor DLC. The values of these parameters associated with DLC show interesting and important characteristics: DLC can store considerable amounts of energy and electric charge, as well as high electric fields; these characteristics can explain the extreme sensitivity of the human body to sense extraordinarily small mechanical actions. While the time to induce the charge on the surface τ is instantaneous, the time τ to form EDL is not; this time controls the shape of the output voltage signals. The presence of glucose modifies the piezoelectric signals allowing to use these profiles to diagnose diabetes. Additionally, expressions were obtained for the chemical capacitance C as a function of voltage and glucose concentration.

中文翻译:

HAp-胶原-葡萄糖双层电容器输出曲线的参数测定(能量、电荷、电场、形状);糖尿病检测的可能性

获得了与含有电解质并受到外部应力的压电材料相关的重要参数的数值;施加的应力几乎立即在材料表面产生感应电荷;这些电荷将电解质的离子移向带电表面,形成双电层 EDL;这两个带电表面在材料内部形成了一种特殊类型的电容器,称为双层电容器 DLC。这些与 DLC 相关的参数值显示出有趣且重要的特性:DLC 可以存储大量的能量和电荷,以及高电场;这些特征可以解释人体对极其微小的机械动作的极度敏感。虽然表面感应电荷的时间 τ 是瞬时的,但形成 EDL 的时间 τ 却不是瞬时的;这次控制输出电压信号的形状。葡萄糖的存在会改变压电信号,从而允许使用这些曲线来诊断糖尿病。此外,还获得了化学电容 C 作为电压和葡萄糖浓度的函数的表达式。
更新日期:2024-02-02
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