差示扫描量热法
亚稳态
正弦波
摄动(天文学)
量热法
材料科学
热力学
生物系统
统计物理学
化学
物理
电压
有机化学
量子力学
生物
作者
Mike Reading,A. Luget,R. J. Wilson
标识
DOI:10.1016/s0040-6031(94)85215-4
摘要
Modulated differential scanning calorimetry (MDSC) is a recently developed extension of DSC that adds a new dimension to the conventional approach. The usually linear temperature programme is modulated by a small perturbation, in this case a sine wave, and a mathematical treatment is applied to the resultant data to deconvolute the sample response to the perturbation from its response to the underlying heating programme. In this way the reversible (within the time scale of the perturbation) and irreversible nature of a thermal event can be probed. The advantages include disentangling overlapping phenomena, improving resolution and enhancing sensitivity. A further benefit is that metastable melting can be detected in cases where it is not normally observed. This new technique offers considerable scope for further development.
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