Tootfinder

The tape recorder (or any recording and playback technology) remains one of the most important inventions in its philosophical implications in human history, imo. For the first time, we gained new access to sound as raw material: almost as pure phenomena, potentially unfiltered by description, notation, or the cultural identifiers that usually shape musical/sonic experience. (I don’t mean that tape recording gave us direct, unmediated access - whether such a thing is ever possible with any p…

Observation of dispersion anomalies by design
Mahmoud M. Samak, Osama R. Bilal
https://arxiv.org/abs/2505.22844 https://arxiv.org/pdf…

Observation of dispersion anomalies by design
Band structures encode electronic, optical, and acoustic properties of matter and can serve as an essential tool in material discovery and design. Dispersion anomalies -- sharp, non-standard features in the frequency-wavenumber relation -- have been historically correlated with phonon-electron coupling or long-range interaction. Through a combination of experimental, numerical, and analytical methods, we show how magnetic couplings can induce negative stiffness and sculpt dispersion relations t…

This https://arxiv.org/abs/2406.13598 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Cryogenic cesium iodide as a potential PET material
Total Body PET (TBPET) scanners have recently demonstrated the ability to significantly reduce both acquisition time and the administered radioactive dose, thanks to their increased sensitivity. However, their widespread adoption is limited by the high costs associated with the current available systems. Cesium iodide (CsI), though historically less favored for PET due to its lower stopping power and light yield compared to crystals like LYSO, shows remarkable improvement when operated at cryog…