73 citations · 317 across the 14 of their papers we have counts for
14 papers
Simulation of Axion-Induced Electromagnetic Signal Detection Using Plasmonic Metasurfaces and Diamond NV Centers
James L. Webb
The axion represents a strong candidate for weakly interacting dark matter. To date, high sensitivity lab based experiments and astrophysical observations have ruled out a substant…
Microscopic-scale recording of brain neuronal electrical activity using a diamond quantum sensor
Nikolaj Winther Hansen, James Luke Webb, Luca Troise +13
An important tool in the investigation of the early stages of neurodegenerative disease is the study of dissected living tissue from the brain of an animal model. Such investigatio…
Laser stimulation of muscle activity with simultaneous detection using a diamond colour centre biosensor
Luca Troise, Nikolaj Winther Hansen, Christoffer Olsson +13
The detection of physiological activity at the microscopic level is key for understanding the function of biosystems and relating this to physical structure. Current sensing method…
Investigation and comparison of measurement schemes in the low frequency biosensing regime using solid-state defect centers
Andreas F. L. Poulsen, James L. Webb, Kirstine Berg-Sørensen +2
Ensembles of solid state defects in diamond make promising quantum sensors with high sensitivity and spatiotemporal resolution. The inhomogeneous broadening and drive amplitude var…
High speed microcircuit and synthetic biosignal widefield imaging using nitrogen vacancies in diamond
James L. Webb, Luca Troise, Nikolaj W. Hansen +9
The ability to measure the passage of electrical current with high spatial and temporal resolution is vital for applications ranging from inspection of microscopic electronic circu…
Optimal control of a nitrogen-vacancy spin ensemble in diamond for sensing in the pulsed domain
Andreas F. L. Poulsen, Joshua D. Clement, James L. Webb +4
Defects in solid state materials provide an ideal, robust platform for quantum sensing. To deliver maximum sensitivity, a large ensemble of non-interacting defects hosting coherent…
Laser threshold magnetometry using green light absorption by diamond nitrogen vacancies in an external cavity laser
James L. Webb, Andreas F. L. Poulsen, Robert Staacke +4
Nitrogen vacancy (NV) centers in diamond have attracted considerable recent interest for use in quantum sensing, promising increased sensitivity for applications ranging from geoph…
Interplay of crystal thickness and in-plane anisotropy and evolution of quasi-one dimensional electronic character in ReSe
Lewis S. Hart, Surani M. Gunasekera, James L. Webb +4
We study the valence band structure of ReSe crystals with varying thickness down to a single layer using nanoscale angle-resolved photoemission spectroscopy and density funct…
Detection of biological signals from a live mammalian muscle using a diamond quantum sensor
James Luke Webb, Luca Troise, Nikolaj Winther Hansen +12
The ability to perform noninvasive, non-contact measurements of electric signals produced by action potentials is essential in biomedicine. A key method to do this is to remotely s…
Optimisation of a diamond nitrogen vacancy centre magnetometer for sensing of biological signals
James Webb, Luca Troise, Nikolaj W. Hansen +9
Sensing of signals from biological processes, such as action potential propagation in nerves, are essential for clinical diagnosis and basic understanding of physiology. Sensing ca…
Electronic bandstructure of ReS2 by high resolution angle resolved photoemission spectroscopy
James L. Webb, Lewis S. Hart, Daniel Wolverson +3
The rhenium-based transition metal dichalcogenides (TMDs) are atypical of the TMD family due to their highly anisotropic crystalline structure and are recognized as promising mater…
Electronic bandstructure and van der Waals coupling of ReSe2 revealed by high-resolution angle-resolved photoemission spectroscopy
Lewis S Hart, James L Webb, Sara Dale +6
ReSe2 and ReS2 are unusual compounds amongst the layered transition metal dichalcogenides as a result of their low symmetry, with a characteristic in-plane anisotropy due to in-pla…
Charge Imbalance and Crossed Andreev reflection in Py/Ta Devices
James Luke Webb, Bryan Hickey, Gavin Burnell
Crossed Andreev reflection in a lateral spin valve geometry device is an aspect of considerable recent interest, particularly with regards to Cooper pair splitting experiments to r…
A Numerical Model of Crossed Andreev Reflection and Charge Imbalance
James Luke Webb, Bryan Hickey, Gavin Burnell
We present a numerical model of local and nonlocal transport properties in a lateral spin valve structure consisting of two magnetic electrodes in contact with a third perpendicula…