Abstract
A high sensitivity and high resolution DSC working between 220 and 400 K with a baseline stability of ±3 nW for many hours, with a low noise of nV order, with a quick response time of 2 s and with the temperature resolution of 0.1 mK, capable of measuring in the both direction of heating and cooling has been designed and constructed. The stability of the baseline was achieved by the use of a high sensitive temperature sensor, a precise temperature control of ±0.1 mK, a semi-adiabatic control, the damping devices to decrease the temperature fluctuation at the sample cell and the devices to decrease noises on the lead wires. The specific heat capacity of a single crystalline alumina was measured with an inaccuracy of 1p by the use of the DSC. Very fine structures of phase transitions were observed at a cooling rate of 5 µK s -1 in the measurement of C 22 H 46 by application of the high sensitivity DSC. The measurement for very small samples of µg order has become possible using the high sensitivity DSC and the application for the melting transition of C 15 H 31 COOH and C 32 H 66 was presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
