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Microbial Biosensors

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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相关实验视频

Updated: Jun 23, 2026

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents

Published on: May 1, 2012

基于粒子等离子共振的无标签生物传感器与衍射格波导相结合.

Wei-Ting Hsu¹, Yu-Cheng Lin², Huang-Chin Yang¹

¹Department of Chemistry and Biochemistry and Center for Nano Bio-Detection, National Chung Cheng University, Chiayi 62102, Taiwan.

Sensors (Basel, Switzerland)

|September 14, 2024

概括

此摘要是机器生成的。

这项研究引入了一种新的无标签生物传感平台,将粒子等离子体共振 (PPR) 与衍射格子波导相结合,用于增强生物分子检测. 综合系统表现出各种分析物的高灵敏度和低检测极限.

关键词:

紫外线辅助的压印衍射格是一种射格.黄金纳米颗粒的表面表面.没有标签的生物感知平台粒子等离子体共振粒子等离子体共振

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A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions

A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions

Published on: November 23, 2015

相关实验视频

Last Updated: Jun 23, 2026

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents

Attaching Biological Probes to Silica Optical Biosensors Using Silane Coupling Agents

Published on: May 1, 2012

Use of Label-free Optical Biosensors to Detect Modulation of Potassium Channels by G-protein Coupled Receptors

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Published on: February 10, 2014

A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions

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Published on: November 23, 2015

科学领域:

纳米技术纳米技术
生物物理学的生物物理.
光学传感传感器是什么?

背景情况:

粒子等离子体共振 (PPR),也称为局部表面等离子体共振 (LSPR),是用于传感器制造的金属纳米粒子的一个关键现象.
衍射格子波导用于通过外平面照明监测生物亲和吸附.
整合PPR与衍射网波导用于生物分子检测仍然是一个未被充分探索的领域.

研究的目的:

引入和验证一个新的无标签生物传感平台,该平台将PPR与衍射波导相结合.
调查这种用于生物分子检测的联合PPR-衍射系统的增强灵敏度和检测能力.
为了证明这个平台对于敏感和快速的生物分子定量化的实际应用.

主要方法:

在与样品接触的玻璃幻灯片上固定金纳米颗粒.
在对面的金纳米颗粒的UV辅助凸版衍射格的定位.
利用反射中的衍射来检测由生物分子结合引起的折射率变化.
用不同的砂糖溶液折射率测量衍射束的位置移动.
使用有限元法 (FEM) 模拟来确认传感器灵敏度.

主要成果:

集成的PPR-衍射格子波导传感器显示灵敏度为0.97mm/RIU.
实现了高分辨率的3.1 × 10-4 折射率单位.
确立了4.4 pM的低检测极限,用于反DNP检测.
FEM模拟证实了由于PPR-衍射合的增强灵敏度.

结论:

开发的生物传感平台在敏感,快速和无标签的生物分子检测方面取得了重大进展.
整合PPR和衍射格的波导提供了一个协同效应,提高传感性能.
这项技术在诊断和研究中具有各种应用的实际潜力.