方法对比
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| 小角X射线散射 (SAXS)× | ATR-FTIR× | |
|---|---|---|
| 领域 | 光谱学 | 光谱学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1954 | 1961 |
| 提出者≠ | Otto Kratky | Joop Fahrenfort |
| 类型≠ | Synchrotron/X-ray technique | Vibrational spectroscopy technique |
| 开创性文献≠ | Glatter, O., & Kratky, O. (1982). Small Angle X-ray Scattering. Academic Press. link ↗ | Harrick, N. J. (1960). Study of physics of internal reflection from metals. Journal of Physics and Chemistry of Solids, 13(2), 143-155. link ↗ |
| 别名≠ | SAXS, small-angle scattering | ATR-IR, attenuated total reflectance, FTIR spectroscopy |
| 相关 | 3 | 3 |
| 摘要≠ | Small-Angle X-ray Scattering (SAXS) is a solution-phase X-ray scattering technique that measures the overall shape and size of macromolecules and nanoparticles by analyzing scattering intensity at low angles (0.1-10 degrees). Developed by Kratky and colleagues in the 1950s, SAXS provides information about molecular radius, aggregation state, and overall shape without requiring crystallization or fixing, making it ideal for studying native protein conformations and dynamics. | Attenuated Total Reflectance (ATR) Fourier Transform Infrared (FTIR) spectroscopy is a variant of conventional FTIR that measures infrared absorption through evanescent-wave interrogation of samples in direct contact with a high-refractive-index crystal. Developed by Harrick and Fahrenfort in the 1960s, ATR-FTIR is now the dominant form of FTIR spectroscopy, enabling rapid, non-destructive characterization of organic compounds, polymers, coatings, and biological materials without extensive sample preparation. |
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