纳米工程表面增强的拉曼光谱基质用于探测组织物质相互作用
Connie M Wang1, Roberta M Sabino2, Aditya Garg3
1Department of Biological Engineering, MIT, Cambridge, Massachusetts 02139, United States.
ACS applied materials & interfaces
|January 29, 2026
概括
我们开发了一种新的金纳米柱- (AuNC-Ti) 材料,作为自传感基板. 这允许使用表面增强拉曼光谱法 (SERS) 进行组织植入物相互作用的非侵入性实时监测.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 医疗设备工程 医疗设备工程
背景情况:
- 由于现代医疗植入物的复杂性,评估组织植入物相互作用是具有挑战性的.
- 现有的方法缺乏监测植入物生物学所需的非侵入性,实时和多重功能.
- 了解这些相互作用对于改善植入物寿命和患者结果至关重要.
研究的目的:
- 开发一种多功能,自我感应的植入物材料,用于对组织植入物动态进行非侵入性监测.
- 为了创建一个纳米工程表面增强拉曼光谱 (SERS) 基板与植入物集成.
- 为了实现实时,在组织-植入物接口上的生物过程的多重传感.
主要方法:
- 使用斜角沉积 (OAD) 在表面上制造金纳米柱 (AuNC-Ti).
- 使用SEM,XPS,XRD和接触角度测量进行表征,以确认材料特性和生物相容性.
- 在体外细胞毒性测定中使用人类大动脉内皮细胞 (HAEC).
- 通过共聚焦拉曼成像和多变量分析,展示SERS信号增强和组织组件的空间识别.
主要成果:
- 统一的AuNC-Ti基板已经成功地制造出控制的纳米柱尺寸.
- AuNC-Ti表面表现出生物相容的化学物质和理想的湿透性.
- 获得了1.8 × 10 ^ 5的高SERS增强因子 (EF).
- 多重复合,无标签的SERS和机器学习使组织组件的空间识别成为可能.
结论:
- 开发的AuNC-Ti材料作为一种有效的SERS基质,用于感知组织物质相互作用.
- 这种方法提供了一种非侵入性的多重复合方法,用于实时监测植入物-组织动态.
- 这项技术对确定组织状况和推进可植入设备诊断具有前景.
更多相关视频
06:19Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations
Published on: June 23, 2022
3.0K
10:59Author Spotlight: Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy
Published on: May 12, 2023
3.5K
相关概念视频
01:20Raman Spectroscopy: Overview
1.8K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.8K
01:26Raman Spectroscopy Instrumentation: Overview
1.3K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.3K
01:12Interaction of EM Radiation with Matter: Spectroscopy
3.2K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
3.2K
03:00Self-Evaluation: Self-Enhancement and Self-Verification
5.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
5.8K
01:19Members Made of Elastoplastic Material
397
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...
397
01:20Genetic Material
3.7K
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.
3.7K