Title:
超高感度レシオメトリック静電容量式膨張計および関連する方法
Document Type and Number:
Japanese Patent JP6388885
Kind Code:
B2
Abstract:
An ultrasensitive ratiometric capacitance dilatometer and related methods are described. The dilatometer provides a capacitance measurement based on a ratiometric capacitance, or the capacitance ratio measured between two or more parallel plate capacitors of the dilatometer. In this regard, an absolute capacity bridge is not required, and even more advantageously, the effects of adsorbed gas are greatly reduced compared to conventional dilatometers. The ratiometric capacitance dilatometer provides a symmetrical configuration, which reduces the effects of temperature gradients. Moreover, certain embodiments provide a “v-groove design”, wherein a first parallel plate capacitor forms an angle with a second parallel plate capacitor of the dilatometer along a key centerline of the dilatometer cell, which improves manufacturability due to simpler grinding, metalizing and assembly.
Inventors:
Simmons, Michael
Application Number:
JP2015560403A
Publication Date:
September 12, 2018
Filing Date:
March 07, 2014
Export Citation:
Assignee:
QUANTUM DESIGN INTERNATIONAL,INC.
International Classes:
G01N25/16
Domestic Patent References:
| JP2008039778A | ||||
| JP2013036980A |
Foreign References:
| WO2013072319A1 |
Other References:
J. J. Neumeier et. al,Capacitive-based dilatometer cell constructed of fused quartz for measuring the thermal expansion of solids,REVIEW OF SCIENTIFIC INSTRUMENTS,2008年,Vol. 79,033903
江間 健司,技術ノート(相転移点近傍の物理量の精密測定),応用物理,社団法人応用物理学会,1979年,第48巻,1084(64)
江間 健司,技術ノート(相転移点近傍の物理量の精密測定),応用物理,社団法人応用物理学会,1979年,第48巻,1084(64)
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Hironobu Onda
Atsushi Honda