Motivated by the recent discovery of superconductivity in Magic Angle Twisted Bilayer Graphene, we discuss preparatory work for STM measurements on micrometer-sized graphene flakes. We develop and...Show moreMotivated by the recent discovery of superconductivity in Magic Angle Twisted Bilayer Graphene, we discuss preparatory work for STM measurements on micrometer-sized graphene flakes. We develop and fabricate a dummy sample for testing capacitive navigation in any STM setup with an XY-stage. Furthermore, we calculate the effect of a biased STM tip on the charge distribution in a graphene bilayer. We also estimate the chemical potential shift in a gated graphene sample as a result of the probe tip. All results unambiguously suggest that the STM tip will strongly influence the electrical behavior of the graphene system.Show less
This thesis presents the characterization of a broadband radio frequency power detector, they key element of the detector being the Herotek DZM020BB diode. The detector has been developed to...Show moreThis thesis presents the characterization of a broadband radio frequency power detector, they key element of the detector being the Herotek DZM020BB diode. The detector has been developed to measure shotnoise signal orig- inating from a UHV low temperature STM tunnel junction. The detector provides fast measurement times of 1 sec while providing enough resolu- tion 0.06μVrms to distinguish between different noise voltages. This detec- tor has been compared to the Zurch MFLI lock in amplifier which measures the shotnoise with measuring times in the order of 10 seconds. Systematic effects in the detector have been studied and possible solutions were sug- gested to eliminate these effects.Show less
In this paper, I investigate the relationship between the marriage institution and political legitimacy in Saudi society from a feminist perspective. I argue that the inherent inequality between...Show moreIn this paper, I investigate the relationship between the marriage institution and political legitimacy in Saudi society from a feminist perspective. I argue that the inherent inequality between men and women embedded in the Ḥanbalī marriage contract and Najdī customs was utilized by the state in the 1932 Saudi-Wahhābī alliance to create a specific “Saudi patriarchy” designed to subjugate citizens. I further examine the durability of this patriarchy post-1932 and argue that the Saudi state and its ‘ulamā’ successfully continued to manipulate the institution of matrimony to monitor and control the sexuality of its subjects which effectively distracted some citizens from pursuing their political rights. After discussing the creation and application of Saudi patriarchy, I contend that such a system needs to be deconstructed through the reformulation of the Ḥanbalī marriage contract to eradicate the gender hierarchy embedded within it. This research also attempts to explore whether this social change that can create empowered Saudi identities can also lead to political reform.Show less
