Design and performance of a thin-film calorimeter for quantitative characterization of photopolymerizable systems

Roper, Todd M.; Guymon, C. Allan; Hoyle, Charles E.
May 2005
Review of Scientific Instruments;May2005, Vol. 76 Issue 5, p054102
Academic Journal
A thin-film calorimeter (TFC) was designed for the quantitative characterization of photopolymerizable systems. A detailed description of its construction indicates the ease with which a TFC can be assembled and the flexibility inherent in its design. The mechanics of operation were optimized to yield a significantly faster instrument response time than other calorimetric methods such as photodifferential scanning calorimetry (photo-DSC). The TFC has enhanced sensitivity, more than an order of magnitude greater linear response range to changes in light intensity than that of the photo-DSC, resulting in the ability to measure both smaller and larger signals more accurately. The photopolymerization exotherm curves are reproducible and can be collected over a broad range of film thicknesses.


Related Articles

  • Measurement of thermal conductivity of thin films with a Si-N membrane-based microcalorimeter. Zink, B. L.; Revaz, B.; Cherry, J. J.; Hellman, F. // Review of Scientific Instruments;Feb2005, Vol. 76 Issue 2, p024901 

    We describe a method of measuring thermal conductivity of films as thin as 15 nm from 2–300 K and in magnetic fields up to at least 8 T using a silicon-nitride membrane based microcalorimeter. The thermal transport in the membrane is measured before and after a sample film is deposited on...

  • Relaxation calorimetry technique for measuring low temperature specific heat. Newsome Jr., R.W.; Andrei, E.Y. // Review of Scientific Instruments;Jan2004, Vol. 75 Issue 1, p104 

    A rudimentary calorimeter was constructed to measure the temperature dependence of the specific heat of a 10 μ thick (0.62 mg) copolymer film of vinylidene fluoride and trifluoroethylene in the previously unexplored vicinity of 6 K. The data were processed with the algorithm developed by...

  • Modulated-bath ac calorimetry using modified commercial Peltier elements. Lortz, Rolf; Abe, Satoko; Yuxing Wang; Bouquet, Frédéric; Tutsch, Ulrich; Junod, Alain // Review of Scientific Instruments;Oct2005, Vol. 76 Issue 10, p103903 

    We developed a type of ac microcalorimeter based on a modulated-bath technique for measuring the specific heat of small microgram samples in the temperature range from 30 to 300 K, and tested it in magnetic fields up to 14 T. The device is built from a modified commercial Peltier element. The...

  • Thin film microcalorimeter for heat capacity measurements from 1.5 to 800 K. Denlinger, D. W.; Abarra, E. N.; Allen, Kimberly; Rooney, P. W.; Messer, M. T.; Watson, S. K.; Hellman, F. // Review of Scientific Instruments;Apr94, Vol. 65 Issue 4, p946 

    A new microcalorimeter for measuring heat capacity of thin films in the range 1.5-800 K is described. Semiconductor processing techniques are used to create a device with an amorphous silicon nitride membrane as the sample substrate, a Pt thin film resistor for temperatures greater than 40 K,...

  • Calorimetric Instruments.  // Drug Discovery & Development;Apr2007, Vol. 10 Issue 4, p13 

    The article evaluates the CSC Nano DSC III and Nano ITC III calorimetric instruments from Calorimetry Sciences Corp.

  • Calorimetric Instruments.  // Drug Discovery & Development;Apr2007, Vol. 10 Issue 4, p15 

    The article evaluates the CSC Nano DSC III and Nano ITC III calorimetric instruments from Calorimetry Sciences Corp.

  • Characteristics of a Sector of the Endcap Hadron Calorimeter for the CMS Facility. Goncharov, P. I.; Abramov, V. V.; Bencze, G.; Volkov, A. A.; Volod'ko, A. G.; Golutvin, I. A.; Zaichenko, A. A.; Zarubin, A. V.; Korablev, A. V.; Korneev, Yu. P.; Kosarev, I. G.; Krinitsyn, A. N.; Kryshkin, V. I.; Lazic, D.; Markov, A. A.; Talov, V. V.; Turchanovich, L. K.; Khmel'nikov, A. V. // Instruments & Experimental Techniques;Jan/Feb2004, Vol. 47 Issue 1, p47 

    The characteristics of the prototype of the endcap hadron calorimeter for the CMS facility have been measured. Using the relations between the measured calorimeter response to a radiation source, muons, and pions, it is possible to determine the energy scale of the data-acquisition electronics,...

  • Active radiometric calorimeter for absolute calibration of radioactive sources. Stump, K. E.; DeWerd, L. A.; Rudman, D. A.; Schima, S. A. // Review of Scientific Instruments;Mar2005, Vol. 76 Issue 3, p033504 

    This report describes the design and initial noise floor measurements of a radiometric calorimeter designed to measure therapeutic medical radioactive sources. The instrument demonstrates a noise floor of approximately 2 nW. This low noise floor is achieved by using high temperature...

  • Direct temperature monitoring for semiconductors in plasma immersion ion implantation. Tian, Xiubo; Xiubo Tian; Chu, Paul K. // Review of Scientific Instruments;Jul2000, Vol. 71 Issue 7 

    In situ temperature monitoring is extremely important in plasma immersion ion implantation (PIII) of semiconductors. For instance, the silicon wafer must be heated to 600 °C or higher in separation by plasma implantation of oxygen, and in the PIII/ion-cut process, the wafer temperature must...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics