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Palladium-Coated Laterally Vibrating Resonators (LVRs) for Hydrogen Sensing
Gaia Giubilei, Farah Ben Ayed, Yvonne Sautriot, Aurelio Venditti, Kun Zhang, Sila Deniz Calisgan, Pietro Simeoni, Zhenyun Qian, Matteo Rinaldi
https://arxiv.org/abs/2509.04511

Palladium-Coated Laterally Vibrating Resonators (LVRs) for Hydrogen Sensing
This work presents a novel hydrogen sensor based on 30% scandium-doped aluminum nitride (ScAlN) laterally vibrating resonators (LVRs) functionalized with a palladium (Pd) thin film. The micro-electro-mechanical system (MEMS) device operates by detecting shifts in resonant frequency resulting from hydrogen absorption in the Pd layer. The sensor demonstrates a high mechanical quality factor (Qm) of 820, an electromechanical coupling coefficient (kt2) of 3.18%, and an enhanced responsivity of 26 H…

Housing, food and energy security are “more important now than ever with climate change,”
Haíɫzaqv Hereditary Chief λšλíya sila, Frank Brown, says. 
“Housing is a human right.
It’s imperative we make some progress around ensuring people have adequate housing and that it’s appropriate for the threats that are coming.”
https://

Heiltsuk Nation is building for the climate crisis | The Narwhal
The B.C. First Nation is building energy efficient, affordable homes grounded in culture

Kinematical Lie algebras and symplectic symmetric spaces I: Lie algebraic aspects
Pierre Bieliavsky, Nicolas Boulanger
https://arxiv.org/abs/2508.10565 https://

Kinematical Lie algebras and symplectic symmetric spaces I: Lie algebraic aspects
We generalize the notion of kinematical Lie algebra introduced in physics for the classification of the various possible relativity algebras an isotropic spacetime can accommodate. We first give an elementary proof of the fact that such a generalized kinematical Lie algebra $\mathfrak{g}$ always carries a canonical structure of symplectic involutive Lie algebra (shortly ``siLa''). In other words, if $G$ is a connected Lie group admitting $\mathfrak{g}$ as Lie algebra, there always exists a Li…