Dilatometer for chemically initiated reactions

High-pressure dilatometer

A high-pressure dilatometer capable of measuring volume changes of 2 X loo6 cm3 is described. Fractional volume changes of 1 part in lo4 can be measured over a temperature range of 30-90 “C, and a pressure range of 1 bar (0.1 MPa)-3 kbar (300 MPa). The dilatometer is constructed out of a commercial high-pressure valve and a compact home-built pressure sensor. The system was specially designed t...

Characterization of Chemically Modified Enzymes for Bioremediation Reactions

Versatile and compact capacitive dilatometer

We describe the design, construction, calibration, and operation of a relatively simple differential capacitive dilatometer suitable for measurements of thermal expansion and magnetostriction from 300 to below 1K with a low-temperature resolution of about 0.05Å. The design is characterized by an open architecture permitting measurements on small samples with a variety of shapes. Dilatometers of...

Simulation of Dilatometer Tests by Neural Networks

Rock rigidity may be experienced in a wide range depending on several factors, and different methods can be used to consider their load-deformation behaviors. In this context, dilatometer tests (DTs) can be applied to obtain the modulus of elasticity of rock masses; therefore, it is possible to evaluate in-situ stress-strain behavior of rock masses realistically. Nevertheless, the application o...

Self-powered microscale pumps based on analyte-initiated depolymerization reactions.

Microscale pumps that are simultaneously capable of turning “on” in response to specific analytes in solution and of providing precise control over flow rate will be needed for certain types of smart microand nanoscale devices. Access to these types of pumps, however, has remained limited. Two general approaches for designing microscale pumps have been proposed: 1) those that are turned on and ...