Time filter

Source Type

New Bedford, MA, United States

Orava J.,University of Cambridge | Orava J.,University of Pardubice | Greer A.L.,University of Cambridge | Gholipour B.,University of Southampton | And 2 more authors.
Nature Materials | Year: 2012

Differential scanning calorimetry (DSC) is widely used to study the stability of amorphous solids, characterizing the kinetics of crystallization close to the glass-transition temperature T g. We apply ultrafast DSC to the phase-change material Ge 2Sb 2Te 5 (GST) and show that if the range of heating rates is extended to more than 10 4 K s -1, the analysis can cover a wider temperature range, up to the point where the crystal growth rate approaches its maximum. The growth rates that can be characterized are some four orders of magnitude higher than in conventional DSC, reaching values relevant for the application of GST as a data-storage medium. The kinetic coefficient for crystal growth has a strongly non-Arrhenius temperature dependence, revealing that supercooled liquid GST has a high fragility. Near T g there is evidence for decoupling of the crystal-growth kinetics from viscous flow, matching the behaviour for a fragile liquid suggested by studies on oxide and organic systems. © 2012 Macmillan Publishers Limited. All rights reserved.

Mettler Toledo Inc. | Date: 2014-07-21

Embodiments of the invention generally relate to weighing scale diagnostic methods employing a comparison of like component operating parameters. In certain embodiments, the difference between any two current operating parameter values may be compared against a maximum allowable difference, and/or the deviation of current operating parameters from a calculated measure of central tendency may be determined and compared against a maximum allowable deviation. Alternatively or additionally, a standard statistical test for outliers may be employed. An outlying difference or deviation may be indicative of a problem with the associated component. In other embodiments, the current operating parameters of like components may be compared against calibrated parameters and any deviation of the current parameter for a given component may be compared against the total deviation to determine the percentage of deviation attributable to that component.

Mettler Toledo Inc. | Date: 2013-02-01

Batch conversion systems and methods by which residual ingredients from a previous product batch can be used in a subsequent product batch, with the required amount of ingredients in the subsequent batch being adjusted accordingly.

Mettler Toledo Inc. | Date: 2014-05-21

Exemplary embodiments described herein are directed to conveyor belt tracking mechanisms with a single adjusting element and to conveyors having conveyor belts whose tracking may be adjusted in both directions using such conveyor belt tracking mechanisms. One exemplary conveyor belt tracking mechanism embodiment employs a pulley support yoke coupled to a specialized angular linkage having a linkage flexure pivot that translates linear motion into angular motion.

Mettler Toledo Inc. | Date: 2014-11-04

Systems and methods for remotely monitoring the rezero status of a weighing apparatus, such as a checkweigher. Remotely located interested parties may sign up for notifications related to the weighing apparatus rezero status, and the interested parties may be automatically electronically notified when certain status conditions occur. A hierarchy of notifications may be established such that not all interested parties will receive every notification. System and method embodiments may also operate to identify certain trends in rezero data and to resultantly predict future rezero faults.

Discover hidden collaborations