Publications by authors named "O Brinza"
Article Synopsis
- Quantum sensors using solid state qubits, particularly those based on diamond colour centres, have shown exceptional sensitivity to magnetic fields, making them suitable for biological applications.
- This study successfully utilized a quantum sensor to non-invasively record electrical activity from neurons in living brain tissue, specifically tracking ionic currents in mouse axons.
- The passive and remote nature of this sensing technique allows for a new method to understand neuronal circuits and disease mechanisms, possibly leading to future advancements in imaging brain activity in live mammals.
Solid state spins have demonstrated significant potential in quantum sensing with applications including fundamental science, medical diagnostics and navigation. The quantum sensing schemes showing best performance under ambient conditions all utilize microwave or radio-frequency driving, which poses a significant limitation for miniaturization, energy efficiency, and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing.
View Article and Find Full Text PDFThe photo-induced enhanced Raman spectroscopy (PIERS) effect is a phenomenon taking place when plasmonic nanoparticles deposited on a semiconductor are illuminated by UV light prior to Raman measurement. Results from the literature show that the PIERS effect lasts for about an hour. The proposed mechanism for this effect is the creation of oxygen vacancies in the semiconductor that would create a path for charge transfer between the analyte and the nanoparticles.
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- The ability to measure electric signals from action potentials noninvasively is crucial in biomedicine, traditionally done using expensive superconducting detectors.
- Researchers propose using nitrogen vacancy centers in diamond as an alternative method to detect magnetic fields generated by these electrical signals in living tissue.
- They successfully demonstrated this technique with mouse muscle, achieving good sensitivity and signal recovery in an unshielded lab setting, paving the way for future improvements in monitoring electrical activity in biological samples.
Organic polymerization remains a limiting step in the preparation of organic-inorganic hybrid materials with a strong concentration of the inorganic component. In this work, a high-pressure-ramp process was applied to achieve pHEMA-TiO nanoparticulate solids with an unprecedentedly high concentration (12 mol l) of the inorganic component, which is four times higher than that obtained after radical polymerization induced thermally or by photons. The inorganic nanoparticles underwent morphological and structural changes with an increase of Ti concentration above 1.
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