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Valence Bond Theory02:42

Valence Bond Theory

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Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
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Transducer Mechanism: G Protein–Coupled Receptors01:30

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G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical,...
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Transducer Mechanism: Enzyme-Linked Receptors01:27

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Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
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Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

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There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
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Gas Chromatography: Types of Detectors-II01:19

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In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
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相关实验视频

Updated: May 1, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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螺旋格合表面等离子体共振传感器

Ryeong Myeong Kim1, Soo Min Lee1, Jeong Hyun Han1

  • 1Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.

Nano letters
|November 5, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的等离子体超材料生物传感器,用于超敏感检测. 循环二元化 (CD) 反应提高了生物医学诊断的可靠性和灵敏性.

关键词:
2D状晶体的二维状晶体.网格合的SPR是使用网格合的.和等离子体生物传感.奇拉黄金纳米粒子 奇拉黄金纳米粒子一个圆形的二重化.螺旋类的螺旋类物质.

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科学领域:

  • 纳米技术纳米技术
  • 生物医学诊断 生物医学诊断
  • 光学传感传感器是什么?

背景情况:

  • 超敏感的生物分子传感对于实时生物医学诊断至关重要.
  • 等离子体生物传感通过光分子相互作用提供非侵入性,高灵敏度的检测.
  • 现有的方法需要提高微量样本检测的灵敏度和可靠性.

研究的目的:

  • 开发一种基于等离子体元材料的新型传感策略,用于增强生物分子检测.
  • 为了提高传感性能,利用奇拉纳米粒子网格的循环二元化 (CD) 反应.
  • 在光学生物传感应用中实现高灵敏度和可靠性.

主要方法:

  • 在金基板上制造一种性纳米粒子格子结构 (2D形晶体).
  • 使用网格合表面等离子体共振 (SPR) 和局部表面等离子体共振 (LSPR) 合.
  • 在SPR模式下测量循环二元化 (CD) 响应,特别是CD/g_reflection.

主要成果:

  • 在螺旋体中通过光谱合SPR和LSPR实现了强烈的手术反应.
  • 在SPR模式下表现出了显著的CD/g_反射反应.
  • 获得了379.2nm/RIU的灵敏度和d-葡萄糖的几毫米的检测极限.

结论:

  • 基于SPR-CD的方法为高性能光学生物传感器提供了一个新的范式.
  • 不同的CD响应有效地纠正光学波动,提高灵敏度和可靠性.
  • 这种方法为超敏感,快速和可靠的生物分子传感提供了一个有希望的平台.