https://doi.org/10.1351/goldbook.12790
DSC experiment in which a small sinusoidal modulation overlays the change in temperature with time.
Notes:
- The resulting DSC data can be separated, by Fourier analysis, into components in-phase with the modulation (reversing heat flow) and out-of-phase with the modulation (nonreversing heat flow). \[\underbrace {{\left({\frac{{\partial H}}{{\partial t}}} \right)}_{p}}_{\rm{total\ heat\ flow}} = \frac{{\rm{d}}Q}{{\rm{d}}t} = \underbrace {C_{p}\frac{{\rm{d}}T}{{\rm{d}}t}}_{\rm{reversing\ heat\ flow}} + \underbrace {f\left({T,t}\right)}_{\rm{non\mbox{-}reversing\ heat\ flow}}\] The total heat flow is the average value calculated from the measured signals during the modulated heat flow (MHF). \(C_{p}\) is the heat capacity of the sample, \(\frac{{\rm{d}}T}{{\rm{d}}t}\) is the heating rate.
- Use of the terms "oscillating DSC (ODSC)" and "modulated DSC (MDSC)" is discouraged.