Details
| Originalsprache | Englisch |
|---|---|
| Qualifikation | Doctor rerum naturalium |
| Gradverleihende Hochschule | |
| Betreut von |
|
| Datum der Verleihung des Grades | 24 Juni 2020 |
| Erscheinungsort | Hannover |
| Publikationsstatus | Veröffentlicht - 2020 |
Abstract
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Hannover, 2020. 152 S.
Publikation: Qualifikations-/Studienabschlussarbeit › Dissertation
}
TY - BOOK
T1 - Yukawa Force Spectroscopy to Search for Violations of Newton’s Law of Gravity below 1 μm Distances
AU - Schmidt, Helena
N1 - Doctoral thesis
PY - 2020
Y1 - 2020
N2 - Gravity is well tested on several length scales, but some unified theories predict deviations in the region below 1 mm. In this thesis I will present a method to search for such deviations in the sub-micrometre length scale. Below 1 μm, the electrostatic and the Casimir force are stronger than the gravitational force by some magnitudes. To distinguish these forces, I have designed a new force measurement setup based on the frequency modulation AFM technique. Utilizing a quartz based parallelogram cantilever, it is feasible to measure these forces with sufficient accuracy for us to set new constraints for possible deviations of gravity. In this thesis I will present a new method of measuring such deviations of gravity, and show the initial results I have obtained using it. This will show that the measurement concept works, but that improvements are necessary before we can achieve optimum measurement uncertainty.
AB - Gravity is well tested on several length scales, but some unified theories predict deviations in the region below 1 mm. In this thesis I will present a method to search for such deviations in the sub-micrometre length scale. Below 1 μm, the electrostatic and the Casimir force are stronger than the gravitational force by some magnitudes. To distinguish these forces, I have designed a new force measurement setup based on the frequency modulation AFM technique. Utilizing a quartz based parallelogram cantilever, it is feasible to measure these forces with sufficient accuracy for us to set new constraints for possible deviations of gravity. In this thesis I will present a new method of measuring such deviations of gravity, and show the initial results I have obtained using it. This will show that the measurement concept works, but that improvements are necessary before we can achieve optimum measurement uncertainty.
U2 - 10.15488/9983
DO - 10.15488/9983
M3 - Doctoral thesis
CY - Hannover
ER -