Measurements of thermophysical properties of polyacrylamide gel used for electrophoresis.

Infrared laser desorption and ionization of polypeptides from a polyacrylamide gel

“…Using absorption coefficients α ice for ice and the thermal diffusivity D calculated from physical data for a 10% T polyacrylamide gel at 278 K,35 we estimated the time required for thermal dissipation of the deposited laser energy, $\tau_{\rm thermal} = 1/(\alpha_{\rm ice}^{2}D)$ , to be of the order of 10 −4 s at 2.9 µm and 10 −3 s at 5.9 µm; the micropulse and macropulse are therefore both well below the thermal confinement limit at all wavelengths studied. Using absorption coefficients α ice and speed of sound c s = 4000 ms −1 for ice, we also estimated the stress relaxation times τ stress = 1/(α ice c s ) to be 0.6 ns at 2.9 µm, 5.2 ns at 5.5 µm, and 2.2 ns at 5.9 µm.…”

Excimer Laser Ablation of Polyacrylamide Gel.

“…[ 12] Qeff and the threshold fluence were estimated to be 1.3 x104 cm' and 0.15 J/cm2 for PAAG2 from the well-known Beer's law relationship between the etching rate and the fluence, respectively. [6]ff was estimated only for PAAG2, because PAAG 1 had less repeatability in etching rate.…”

Adaptation of the FLASH method to the measurement of the thermal conductivity of liquids or pasty materials

“…It has been used for thermal analysis, notably by Dittmar el al. [29] and its thermal properties have been investigated experimentally by Hirata et al [30] for different polyacrylamid concentration and different temperature. As regards the thermal properties of water and ethanol, they are notably given in [31].…”