Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"thermal drift"”.
-
Development, thermal analysis, and verification of an inverted pendulum thrust stand
… inverted pendulum thrust stand. Thermal drift was investigated on the thrust stand with component level, sub-system level, and system level testing. Thermal drift data were analyzed and are discussed with recommended mitigation strategies. Relative error was calculated on the …
-
Optimal Parameter Values for Accurate and Repeatable Nanoindentation of Human Trabecular Bone
… determined a set of optimal parameter values for thermal drift correction time, dwell time, and loading rate that can be used to obtain accurate and repeatable material properties from human femoral trabecular bone through experimentation and statistical analysis. All testing was conducted using a …
-
A six-degree of freedom flexural positioning stage
… symmetry and planar geometry restricted thermal drift rates at start-up to 23nm and 4 [mu]tradians over 30 minutes and 0.1°C temperature change. The manipulator, built for $ 2000 (excluding electronics), was successfully tested in a fiber optic alignment application.
-
High Resolution Optical Tweezers for Biological Studies
… reactions take place—instrumental noise such as thermal drift often limits the resolution to a few nanometers. Such a resolution is insufficient to resolve, for example, the ångstrom-level, stepwise translocation of DNA-binding enzymes corresponding to distances between single basepairs of their …
-
Dynamic nanometer alignment for nanofabrication and metrology
… was developed to nullify the effects of thermal drift and mechanical disturbances during exposure. Over several hours the relative position of the mask and wafer was demonstrated to be locked to within [sigma]=1.4 nm.
-
Construction and performance of an inverted pendulum thrust balance
… thrust balance, the issues of calibration and thermal drift during use were also addressed. Once a means of correcting the undesired operational forces and thermal effects had been established, the balance displayed thrust measurement within a range of 0mN to 23mN with an uncertainties as low …
-
Scale effects in microindentation of ductile crystals
… of the test fixture, anisotropic deformations, thermal drift, and noise have been cited as areas where experimental error may play a role in the size effect. Another group of theories suggests that there are actual physical causes for the size effect. Some of the proposed physical causes of the …
-
Modelling aquifer thermal energy storage systems
Aquifer thermal energy storage systems can decarbonise space heating and cooling, provide large-scale long-term storage and buffer the seasonal mismatch in supply and demand. In the winter, the system provides a heat source by extracting warm water from a subsurface reservoir. The extracted fluid …
-
Astronomical Interferometry at Submillimetre Wavelengths
… the lengths of the baseline components, thermal drift in the fibre and other components, the deformation of the dishes under gravity, the contribution of the Earth's atmosphere and the complex passband. The techniques used to make these measurements on the JCMT -CSO Interferometer are …
-
Novel XYZ scanner-based radiation and scattering measurement techniques for antena diagnostics and imaging applications
… and strong positioning requirements. Thus, thermal drift and cable flexing are two of the main error sources in those frequency bands. Indirect off-axis holography can be used to prevent the effect of these errors and develop new efficient and robust phaseless techniques while allowing for …