Tootfinder

Phase Evolution and Substrate-Dependent Nucleation of Quartz GeO$_2$ Films Grown by MOCVD on r- and c-Plane Sapphires
Botong Li, Imteaz Rahaman, Hunter Ellis, Bobby G. Duersch, Kathy Anderson, Kai Fu
https://arxiv.org/abs/2506.09380

Phase Evolution and Substrate-Dependent Nucleation of Quartz GeO$_2$ Films Grown by MOCVD on r- and c-Plane Sapphires
Ultrawide-bandgap (UWBG) semiconductors, such as GeO$_2$, are gaining significant attention for their potential in high-performance applications, particularly in piezoelectric devices. Despite extensive research, a comprehensive understanding of the growth dynamics and phase evolution of GeO$_2$ films via metal-organic chemical vapor deposition (MOCVD) remains insufficient. In this study, we investigate the growth behavior and morphological evolution of GeO$_2$ thin films on r-plane and c-plane…

Quantifying sulfur speciation in magmatic-hydrothermal fluids
Gleb S. Pokrovski (GET)
https://arxiv.org/abs/2506.08598 https://arxiv.…

Quantifying sulfur speciation in magmatic-hydrothermal fluids
Quantitative knowledge of sulfur speciation in the fluid phase is key to understanding sulfur degassing from magmas and its transfer along with metals by fluids across the lithosphere. Farsang and Zajacz (1) recently reported new sulfur speciation data using Raman spectroscopy measurements on aqueous H$_2$SO$_4$-NaCl(-KCl) solutions trapped as synthetic fluid inclusions in quartz at 875$^\circ$C and 2 kbar under variable redox conditions. They interpreted the data by dominant SO$_{2(aq)}$ and H…

🇺🇦 #NowPlaying on KEXP's #DriveTime
Toro y Moi:
🎵 Rose Quartz (Instrumental)
#ToroyMoi
https://masterswami.bandcamp.com/track/toro-y-moi-rose-quartz-two-step-verified
https://open.spotify.com/track/4zhQpcdgO2OFUMRzcgSJu1

Silicate Sundogs: Probing the Effects of Grain Directionality in Exoplanet Observations
Elijah Mullens, Nikole K. Lewis
https://arxiv.org/abs/2508.01839 https://

Silicate Sundogs: Probing the Effects of Grain Directionality in Exoplanet Observations
Crystalline ice in Earth's atmosphere can produce spectacular phenomena due to orientation-dependent attenuation, such as sun dogs and halos, providing diagnostics of the external processes acting on the aerosol grains. Crystalline mineral aerosols, such as quartz (SiO$_2$) and enstatite/forsterite (MgSiO$_3$/Mg$_2$SiO$_4$), have long been predicted to form in hot Jupiter atmospheres with JWST MIRI LRS verifying the existence of crystalline quartz observationally. Due to the strong horizontal w…

Back to a digital
#WristCheck #Armitron

Stability criteria for hybrid linear systems with singular perturbations
Ihab Haidar (ENSEA, QUARTZ), Yacine Chitour (L2S), Jamal Daafouz (IUF, CRAN), Paolo Mason (L2S), Mario Sigalotti (LJLL)
https://arxiv.org/abs/2507.02446

Stability criteria for hybrid linear systems with singular perturbations
We study a class of singularly perturbed impulsive linear switched systems exhibiting switching between slow and fast dynamics. To analyze their behavior, we construct auxiliary switched systems evolving in a single time scale. The stability or instability of these auxiliary systems directly determines that of the original system in the regime of small singular perturbation parameters.

Since at this point everyone surely has seen
The Big OOPs: Anatomy of a Thirty-five-year Mistake
(and quartz, of course)
At its 2.5h & focus on game dev, it’s a bit difficult to generally recommend, but it's of course catnip to ME.
And this slide everyone should get framed.
We are not biologists. We don’t need to build taxonomies on what something IS. Focus on DOING, not BEING.
Almost every OOP intro gets this wrong.

Experimental Exclusion of Planetary Mass Primordial Black Hole Mergers
William M. Campbell, Leonardo Mariani, Michael E. Tobar, Maxim Goryachev
https://arxiv.org/abs/2506.03609

Experimental Exclusion of Planetary Mass Primordial Black Hole Mergers
The multi-mode acoustic gravitational wave experiment (MAGE) is a high-frequency gravitational wave detection experiment featuring cryogenic quartz bulk acoustic wave resonators operating as sensitive strain antennas in the MHz regime. After 61 days of non-continuous data collection, we present bounds on the observable merger rate density of primordial black hole binary systems of chirp mass $1.2\times10^{-4}M_\odot<\mathcal{M}<1.7\times10^{-9}M_\odot$. The maximum achieved limit on the merger …

Discharge dynamics in a cylindrical SDBD prototype reactor under ns-pulsed and sinusoidal AC operation
Konstantinos Giotis (HVL, ECE, LSPM), Dimitrios Stefas (LSPM), Yanis Agha (LSPM), Hans H\"oft (INP), Xavier Duten (LSPM), Panagiotis Svarnas (HVL, ECE), Guillaume Lombardi (LSPM), Kristaq Gazeli (LSPM)
https://arxiv.org/ab…

Discharge dynamics in a cylindrical SDBD prototype reactor under ns-pulsed and sinusoidal AC operation
We developed a prototype reactor generating surface dielectric barrier discharges (SDBDs) in ambient air, designed for consistent operation while preventing constructive material degradation. It features detachable stainless steel electrodes and quartz dielectric to ensure precise fabrication. The grounded electrode is fully immersed into transformer oil drastically suppressing undesired parasitic discharges. The device efficiently sustains ns-pulsed and AC discharges at 10 kHz, enabling fundam…

Verification of the Timing System for the X-ray Imaging and Spectroscopy Mission in the GPS Unsynchronized Mode
Megumi Shidatsu, Yukikatsu Terada, Takashi Kominato, So Kato, Ryohei Sato, Minami Sakama, Takumi Shioiri, Yugo Motogami, Yuuki Niida, Chulsoo Kang, Toshihiro Takagi, Taichi Nakamoto, Chikara Natsukari, Makoto S. Tashiro, Kenichi Toda, Hironori Maejima, Shin Watanabe, Ryo Iizuka, Rie Sato, Chris Baluta, Katsuhiro Hayashi, Tessei Yoshida, Shoji Ogawa, Yoshiaki Kanemaru, Kotaro Fukushima, Akio Hoshino, Hiromitsu Takahashi, Masayoshi Nobukawa, Tsunefumi Mizuno, Kazuhiro Nakazawa, Shinichiro Uno, Ken Ebisawa, Satoshi Eguchi, Satoru Katsuda, Aya Kubota, Naomi Ota, Atsushi Tanimoto, Yuichi Terashima, Yohko Tsuboi, Yuusuke Uchida, Hideki Uchiyama, Shigeo Yamauchi, Tomokage Yoneyama, Satoshi Yamada, Nagomi Uchida, Matt Holland, Michael Loewenstein, Tahir Yaqoob, Eric D. Miller, Robert S. Hill, Efrain C. Perez-Solis, Morgan D. Waddy, Mark Mekosh, Joseph B. Fox, Isabella S. Brewer, Emily Aldoretta, Koji Mukai, Kenji Hamaguchi, Francois Mernier, Anna Ogorzalek, Katja Pottschmidt, Mihoko Yukita
#toXiv_bot_toot

Stability characterization of impulsive linear switched systems
Yacine Chitour (L2S), Jamal Daafouz (IUF, CRAN), Ihab Haidar (ENSEA, QUARTZ), Paolo Mason (L2S), Mario Sigalotti (LJLL)
https://arxiv.org/abs/2507.02434

Stability characterization of impulsive linear switched systems
This paper addresses a class of impulsive systems defined by a mix of continuous-time and discrete-time switched linear dynamics. We first analyze a related class of weighted discrete time switched systems for which we establish two main stability results: a converse Lyapunov theorem and a Berger-Wang-type formula. These results are used to characterize the exponential stability of the considered class of systems via spectral and Lyapunov-based approaches, extending existing results in hybrid a…

A Berny green, flieger - type b style watch, with a green dial.
Yes, it looks similar to a certain Seiko with this dial color and the four o'clock crown but, that watch too steals 90 % of it's design from classic fliegers, so I'm ok with it. 😆
Plus it has a couple of things extra I wanted. Titanium case, sapphire crystal, no logo or extraneous text on the face (like classic fliegers) and it features a "mecha-quartz" (quartz accuracy but the second hand is m…

Phase Competition and Rutile Phase Stabilization of Growing GeO2 Films by MOCVD
Imteaz Rahaman, Botong Li, Hunter D. Ellis, Kathy Anderson, Feng Liu, Michael A. Scarpulla, Kai Fu
https://arxiv.org/abs/2507.22430

Phase Competition and Rutile Phase Stabilization of Growing GeO2 Films by MOCVD
Rutile germanium dioxide (r-GeO2) is an ultra-wide bandgap semiconductor with potential for ambipolar doping, making it a promising candidate for next-generation power electronics and optoelectronics. Growth of phase-pure r-GeO2 films by vapor phase techniques like metalorganic chemical vapor deposition (MOCVD) is challenging because of polymorphic competition from amorphous and quartz GeO2. Here, we introduce seed-driven stepwise crystallization (SDSC) as a segmented growth strategy for obtain…

Interfacial Entanglement-Induced Time-Dependent Solidification of Polymeric Fluids
Jaewon Shim (Seoul National University), Manhee Lee (Chungbuk National University), Wonho Jhe (Seoul National University)
https://arxiv.org/abs/2507.08559

Interfacial Entanglement-Induced Time-Dependent Solidification of Polymeric Fluids
The structure of polymers at solid interfaces evolves over time, but the corresponding changes in their rheological properties remain poorly understood. Here, using a home-built quartz tuning fork atomic force microscope-based nano-rheometer, we directly measure the time-dependent viscoelasticity of the interfacial fluid. The bottommost layer, closest to the substrate, undergoes solidification over 10 hours, exhibiting an approximately five-fold increase in storage modulus and a two-fold increa…

Design and Fabrication Of Multiplexed One-Port SAW Resonators On A Single Chip
Alexandre Westrelin (IEMN), Pierre Debavelear (ICAM), Mathieu Lefevbre (ICAM), Nour Abdallah (IEMN), Kamal Lmimouni (IEMN), Olivier Stienne (IEMN), Bilel Hafsi (IEMN)
https://arxiv.org/abs/2506.13788

Design and Fabrication Of Multiplexed One-Port SAW Resonators On A Single Chip
Shear horizontal surface acoustic wave (SH-SAW) sensors are considered as a viable option for label-free, sensitive, real-time, and cost-effective detection. In this paper, we present the design, the fabrication and the characterization of multiplexed SAW sensors based on a single chip SAW resonator. Operating near the industrial, scientific and medical (ISM) bands, resonators were microfabricated on 42.75{\textdegree} Y (ST) cut Quartz. This substrate was selected due to its traditional associ…

#WristCheck for an insanely good value watch. The brand is Militado and modelled on US field watches. It cost me $47.53🇺🇸 with all tax and delivery costs included. 38mm, with double domed, sapphire crystal ( AR coating), steel sand blasted case, screw down crown providing 200m water resistance and a Seiko VH31 movement with higher than average quartz accuracy plus 4 ticks per second hand …