补充金属氧化物半导体 (CMOS) 蒸发时间测量系统用于二元化学监测
Ebrahim Ghafar-Zadeh1, Saghi Forouhi2, Hamed Osouli Tabrizi3
1Biologically Inspired Sensors and Actuators Laboratory (BioSA Lab), Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON, M3J1P3, Canada. egz@yorku.ca.
本研究介绍了综合蒸发时间测量系统 (ITEMS),这是一个基于CMOS的平台,用于实时二元液体混合物分析. ITEMS使用蒸发动态的电容传感器精确监测溶剂成分,从而实现低体积,高灵敏度的化学传感.
科学领域:
- 化学传感器是一种化学传感器.
- 材料科学是一种材料科学.
- 电气工程 电气工程 电气工程
背景情况:
- 对二元液体混合物的准确实时分析对于小型化,低成本的化学传感应用至关重要.
- 现有的方法可能缺乏某些应用所需的灵敏度或实时功能.
研究的目的:
- 开发和验证一个基于CMOS的平台,ITEMS,用于对二元液体混合物蒸发动态的高分辨率电容传感.
- 评估平台在各种混合物和温度中实时监测溶剂成分的能力.
主要方法:
- 使用集成蒸发时间测量系统 (ITEMS) 与集成电容传感器来监测液滴蒸发期间的介电变化.
- 提取的关键特征:中间蒸发时间 (Δt2),总蒸发时间 (ToE) 和电容变化 (ΔCap).
- 用乙醇-水,甲醇-水和甲醇-乙醇混合物 (0-100%度) 在25°C至60°C的温度下验证了系统.
主要成果:
- 蒸发时间和介电反应显示出非线性依赖于溶剂度,特别是在更高的温度下.
- 局部多项式回归 (LOESS) 建模优于线性回归,实现更低的根平均平方误差 (RMSE) 预测组成.
- 该系统在各种二进制混合物和温度范围内表现出强度.
结论:
- 基于CMOS的ITEMS平台为高灵敏度的实时化学成分监测提供了强大的,可扩展的解决方案.
- 它的紧设计,低样本体积要求 (<1μL) 和数字接口功能使其适合各种应用.
- ITEMS为溶剂成分提供了多维的见解,推进了化学传感技术.
更多相关视频
06:28Author Spotlight: Unraveling Seizure Dynamics and Novel Therapeutics for Status Epilepticus Using CMOS High-Density Microelectrode Array Systems
Published on: September 27, 2024
06:39Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods
Published on: September 14, 2017
相关概念视频
Metal-Semiconductor Junctions
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Complementary DNA
Oxidation-Reduction Reactions
Semiconductors
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Binary Fission
