For the experiment at ultra-high vacuum. 3. Driving mechanism. 2.

Rolling Contact Fatigue in Ultra High Vacuum

2 1 A ug 2 00 3 Building a 3 . 5 m prototype interferometer for the Q & A vacuum birefringence experiment and high precision ellipsometry

We have built and tested a 3.5 m high-finesse Fabry-Perot prototype inteferometer with a precision ellipsometer for the QED test and axion search (Q & A) experiment. We use X-pendulum-double-pendulum suspension designs and automatic control schemes developed by the gravitational-wave detection community. Verdet constant and Cotton-Mouton constant of the air are measured as a test. Double modula...

Multimodal magnetic resonance imaging at 3 T and challenges for application at ultra-high field

Multimodal neuroimaging opens up a unique window of opportunity for the investigation of function and structure of the brain. Each imaging method probes specific physiological processes or tissue structures with characteristic spatial and temporal resolutions, giving a filtered view on one or more brain processes of interest. The combination of different imaging modalities can overcome the limi...

A diamond-based scanning probe spin sensor operating at low temperature in ultra-high vacuum.

We present the design and performance of an ultra-high vacuum (UHV) low temperature scanning probe microscope employing the nitrogen-vacancy color center in diamond as an ultrasensitive magnetic field sensor. Using this center as an atomic-size scanning probe has enabled imaging of nanoscale magnetic fields and single spins under ambient conditions. In this article we describe an experimental s...

Ultra high resolution fMRI at ultra-high field

In this short review article I will summarize the path we took over the years towards increasing the spatial resolution of fMRI. To fully capitalize on the fMRI technique, a better understanding of the origin of the hemodynamic signals, and what factors are governing their spatial control is necessary. Here, I will briefly describe the studies and developments that ultimately led to our success...