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.
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Showing 1 to 20 of 72 for “"temperature sensitivity"”.
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Substrate dependance, temperature dependance and temperature sensitivity and resolution of doped-silicon microcantilevers
… thermal conductance, thermal time constant, and temperature-dependant adhesion force between and cantilever tip and substrates of silicon, quartz, and polyimide. The second objective is to utilize a heated microcantilever as a heater-thermometer. The experiments investigate the thermal …
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Heated atomic force microscope cantilever with high resistivity and improved temperature sensitivity for nanotopography sensing
… cm^-3 and 3 x 10^17 cm^-3. The HR cantilever temperature sensitivity on a 100 nm tall silicon grating improves by more than two times compared to the LR cantilever sensitivity in the range 100ºC – 300ºC. The HR cantilever achieves a sensitivity of 0.37 mV/nm at 300 ºC, compared to 0.15 mV/nm …
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Effects of temperature on wheat-pathogen interactions
… defence is not. Many wheat resistance genes are temperature sensitive and these were used as a starting point to investigate defence temperature sensitivity in wheat starting with yellow rust resistance gene Yr36, previously shown to be temperature-sensitive. The effect of temperature on …
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Co-deformation of an aluminum zinc alloy
… using strain rate jump tests to determine the temperature sensitivity, tensile tested to determine work hardening and the temperature sensitivity, wire drawn to study the effect of large plastic deformation and finally tension compression tested to determine internal stresses. The bulk …
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Novel applications of pulse pre-pump Brillouin Optical Time Domain Analysis for behavior evaluation of structures under thermal and mechanical loading
… overlays; (3) characterize the strain and temperature sensitivities of distributed fiber optic sensors at elevated temperatures; (4) develop a thermal annealing approach to enhance the thermal stability and temperature sensitivity of the distributed sensors; and (5) apply the distributed …
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Soil-atmosphere fluxes of CO2 and CH4 in annual and perennial cropping systems in southern Sweden
… to May 2025. Concurrent measurements of soil temperature and soil water content were also taken. CO2 fluxes exhibited large temporal variability, but low spatial variability, while CH4 fluxes exhibited large spatiotemporal variability. CO2 fluxes were found to have a positive exponential …
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The effects of fuel evaporation on engine knock
… the problem could be linked to an unusually high temperature sensitivity exhibited by the blended fuels, but the exact cause of this temperature sensitivity was not readily identified, and research efforts became diversified in attempts to make headway. Initial studies in the field of high-speed …
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Development of a CubeSat Instrument for Microgravity Particle Damper Performance Analysis
… vibration dissipation mechanisms. However, temperature sensitivity and material degradation limit the effectiveness of traditional damping techniques in space. Robust particle damping technology offers a potential solution, driving the need for microgravity characterization. A 1U cubesat …
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Combined Application of Density Functional Theory and Molecular Mechanics Sampling Techniques to study Chemical Systems, from Intramolecular Rearrangements to Polymerization Reactions
… methods and DFT are used to evaluate the temperature sensitivity of 19F chemical shifts in a library of organofluorine compounds screened for temperature sensing, and computations were used to successfully predict the chemical shift temperature sensitivity of these compounds, and finally …
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Dual-modality thermoacoustic and photoacoustic imaging
… TAT and PAT can be used in therapy for real-time temperature monitoring with high spatial resolution and high temperature sensitivity, which are both needed for safe and efficient thermotherapy. Using a tissue phantom, these noninvasive methods have been demonstrated to have a high temperature …
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On fuel selection in controlled auto-ignition engines : the link between intake conditions, chemical kinetics, and stratification
… predict when the high-load limit is reached. Temperature and fuel concentration stratification, and the degree that they can be used to relax the constraint on the highload limit, were then examined. The effectiveness of stratification was then related to the chemical kinetic behavior of …
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Fabrication and characterization of compound semiconductor nanostructures
… yield narrower spectral linewidths, and reduce temperature sensitivity in semiconductor lasers. This thesis reports the development and characterization of several fabrication techniques of compound semiconductor nanostructures on $\rm In\sb{0.53}Ga\sb{0.47}As/InP$ and $\rm …
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Particle Image Velocimetry Applications of Fluorescent Dye-Doped Particles
… summary of an experiment to characterize the temperature sensitivity of the KR620 dye is included. This experiment concluded that the KR620 particles did not exhibit sufficient temperature sensitivity to warrant further investigation at the time.
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Towards Single-Chip Nano-Systems
… A microelectrode array containing a single temperature sensor has been characterized and the versatility under dry/wet, and relaxed/strained conditions has been verified. On-chip instrumentation amplifier has been utilized to improve the temperature sensitivity of the device. While the …
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High-precision electron-spin sensing with ensembles of nitrogen-vacancy centers in diamond
… realization of a bulk diamond magnetic field and temperature sensor. The sensing is done using continuous-wave electron-spin resonance spectra of nitrogen-vacancy centers in diamond. Experiments were performed using a light-trapping diamond waveguide sample, with which we estimate to address 10¹³ …
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Design of integrated capacitive sensors for particulate matter detection
… its relative simplicity of implementation, high sensitivity, high resolution, low temperature sensitivity and low noise performance. To measure the capacitance variation of each pixel and convert it into a variable that can be a voltage, a current, a frequency or a pulse width, an electronic …
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Design and characterization of a low cost dual differential proving ring force sensor utilizing Hall-effect sensors
… to signal amplification instrumentation, high temperature sensitivity, and only moderate dynamic range. The goal of the research herein described was to design and test a low cost, high dynamic range force sensor. Hall-Effect sensors have high bandwidth (>100 kHz), a wide dynamic range, are low …
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Design of a MEMS-based optical accelerometer with large measurable range and high sensitivity
… suffer from a number of drawbacks, such as low sensitivity due to low signal-to-noise ratio (SNR), small dynamic range, high temperature sensitivity, etc. In this thesis, a MEMS-based optical accelerometer is designed and analyzed. The device can be fabricated on a silicon-on-insulator (SOI) …
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Model microfluidic platform prototyping : design and fabrication of a Polymerase Chain Reaction (PCR) chip
… single stranded DNA, and finally increasing the temperature to 70-75 °C for extension of the primers with thermostable DNA polymerase. The temperature sensitivity of the reaction requires precise temperature control and proper thermal isolation of the three temperature zones. In this thesis, the …
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