TY - JOUR
T1 - Study of excess heat capacity and suppressed kapitza conductance in TES devices
AU - Zhao, Yue
AU - Appel, John
AU - Chervenak, James A.
AU - Doriese, W. B.
AU - Staggs, Suzanne
N1 - Funding Information:
Manuscript received August 03, 2010; accepted October 25, 2010. Date of publication January 10, 2011; date of current version May 27, 2011. This work was supported by the U.S. National Science Foundation under Awards AST-0408698 and PHY-0355328 and by NASA Internal Research and Development funding. Y. Zhao was with the Physics Department, Princeton University, Princeton, NJ 08544 USA. He is now with Cornell University, Ithaca, NY USA 14850. J. Appel and S. Staggs are with the Physics Department, Princeton University, Princeton, NJ 08544 USA. J. A. Chervenak is with NASA, Goddard Space Flight Center, Greenbelt, MD 20771 USA (e-mail: [email protected]). W. B. Doriese is with the National Institute of Standards and Technology, Boulder, CO 80305 USA. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2010.2097231 Fig. 1. Three thermal architectures used to model bolometer impedance. The extended models (b) and (c) fit the measured impedance well.
PY - 2011/6
Y1 - 2011/6
N2 - A number of groups have produced TES bolometers and other devices using dielectric membranes for thermal isolation in which excess heat capacity is reported. We have fabricated a series of TES devices using large area membranes and narrow legs for thermal isolation to study the scaling of intrinsic parameters like the heat capacity of the membrane. The devices are arranged on a single chip to ensure similarity of devices parameters (i.e., film thicknesses) and processing history. Measurements (non-multiplexed) of the current-voltage characteristic and complex impedance are made using a well-characterized, highly uniform, multichannel SQUID setup. We have developed model for non-ideal transition edge sensor performance that enables extraction of heat capacities and thermal conductances identified in the models.We report on the magnitude of excess heat capacity in the dielectric membrane and thermal conductance of the metal-to-dielectric interface in each of the designs.
AB - A number of groups have produced TES bolometers and other devices using dielectric membranes for thermal isolation in which excess heat capacity is reported. We have fabricated a series of TES devices using large area membranes and narrow legs for thermal isolation to study the scaling of intrinsic parameters like the heat capacity of the membrane. The devices are arranged on a single chip to ensure similarity of devices parameters (i.e., film thicknesses) and processing history. Measurements (non-multiplexed) of the current-voltage characteristic and complex impedance are made using a well-characterized, highly uniform, multichannel SQUID setup. We have developed model for non-ideal transition edge sensor performance that enables extraction of heat capacities and thermal conductances identified in the models.We report on the magnitude of excess heat capacity in the dielectric membrane and thermal conductance of the metal-to-dielectric interface in each of the designs.
KW - Bolomete
KW - Heat capacity
KW - Phonon
KW - Transition edge sensor
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U2 - 10.1109/TASC.2010.2097231
DO - 10.1109/TASC.2010.2097231
M3 - Article
AN - SCOPUS:79957968987
SN - 1051-8223
VL - 21
SP - 227
EP - 231
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3 PART 1
M1 - 5685277
ER -