Tootfinder

Terahertz source-on-a-chip with decade-long stability using layered superconductor elliptical microcavities
Mingqi Zhang, Shungo Nakagawa, Yuki Enomoto, Yoshihiko Kuzumi, Ryuta Kikuchi, Yuki Yamauchi, Toshiaki Hattori, Richard A. Klemm, Kazuo Kadowaki, Takanari Kashiwagi, Kaveh Delfanazari
https://arxiv.org/abs/2506.22811…

Terahertz source-on-a-chip with decade-long stability using layered superconductor elliptical microcavities
Coherent, continuous-wave, and electrically tunable chip-scale terahertz (THz) sources are critical for emerging applications in sensing, imaging, spectroscopy, communication, space and quantum technologies. Here, we demonstrate a robust source-on-a-chip THz emitter based on a layered high-temperature superconductor, engineered with an elliptical microcavity and capable of sustained coherent emission over an unprecedented operational lifetime exceeding 11 years. This compact THz source operates…

Under Pressure From Trump, UVA President Reportedly Resigns https://www.insidehighered.com/news/government/politics-elections/2025/06/27/university-virginia-president-resigns-after-trumps

University of Virginia President Resigns After Trump’s Demands
The move is a “major blow” to the independence of American institutions, one expert said.

Congratulations to Dr. Caleb Oladipo '88 S.T.M. on his election to the American Theological Society! https://news.campbell.edu/articles/oladipo-elected-to-prestigious-american-theological-society/

Oladipo elected to prestigious American Theological Society - News | Campbell University
Dr. Caleb O. Oladipo became just one of 100 active members in the American Theological Society — the nation’s oldest… More on this post

Scalable Etch-Free Transfer of Low-Dimensional Materials from Metal Films to Diverse Substrates
Kentaro Yumigeta (Department of Materials Science & Engineering, University of Arizona, Tucson, Arizona, USA), Muhammed Yusufoglu (Department of Materials Science & Engineering, University of Arizona, Tucson, Arizona, USA), Mamun Sarker (Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, USA), Rishi Raj (Department of Chemical Engineering and Materials Scienc…

Scalable Etch-Free Transfer of Low-Dimensional Materials from Metal Films to Diverse Substrates
Low-dimensional materials hold great promises for exploring emergent physical phenomena, nanoelectronics, and quantum technologies. Their synthesis often depends on catalytic metal films, from which the synthesized materials must be transferred to insulating substrates to enable device functionality and minimize interfacial interactions during quantum investigations. Conventional transfer methods, such as chemical etching or electrochemical delamination, degrade material quality, limit scalabil…

New York Democrats unveil their own mid-decade redistricting scheme, targeting future elections (NBC News)
https://www.nbcnews.com/politics/2026-election/new-york-democrats-unveil-decade-redistricting-scheme-targeting-future-rcna221811
http://www.memeorandum.com/250729/p134#a250729p134

On Bell's dynamical route to special relativity
Frederick W. Strauch
https://arxiv.org/abs/2506.23450 https://arxiv.org/pdf/2506.…

On Bell's dynamical route to special relativity
This paper develops the approach to special relativity put forward by John S. Bell. The classical dynamics of an electron orbiting a nucleus in uniform motion is solved analytically and compared to numerical simulations for an accelerated nucleus. The relativistic phenomena of length contraction and time dilation are shown to result from the electric and magnetic forces on the electron when its motion is analyzed in a single frame of reference. The relevance of these results for understanding t…

Elastic rigid rod in an expanding universe
Sim\~ao Correia, Jos\'e Nat\'ario, Jorge Drumond Silva
https://arxiv.org/abs/2507.21227 https://arxiv.or…

Elastic rigid rod in an expanding universe
We study the motion of a rigid elastic rod, initially set in its relaxed state along a spacelike geodesic, in an expanding Friedmann-Lemaître-Robertson-Walker universe. This leads to an initial boundary value problem (IBVP) for a nonlinear wave equation whose nonlinearity depends on a parameter $κ\geq 0$, related to the ratio between the rod's length and the cosmological scale. We show that if $κ$ is small enough then the solution to the IBVP is global in time and bounded, meaning that the r…

Series A, Episode 05 - The Web
AVON: Yes.
BLAKE: [V.O.] I need you on the flight deck.
AVON: I'm busy
BLAKE: [V.O.] Now, Avon.
[Flight deck of the Liberator.]
BLAKE: Zen, how are the repairs going?
https://blake.torpidity.net/m/105/20 B7B3

Blakes7Bot | Search
Companion site to the Blakes7Bot Twitter, Mastodon, and Bluesky accounts. Automated lines of Blakes 7 dialog. Includes a script search facility.

Post-compression of a Q-switched laser in a glass-rod multi-pass cell
Peer Biesterfeld (Leibniz University Hannover, Institute of Quantum Optics, Welfengarten 1, Hannover, Germany), Arthur Sch\"onberg (Deutsches Elektronen-Synchrotron DESY, Notkestra{\ss}e 85, 22607 Hamburg, Germany), Marc Seitz (Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestra{\ss}e 85, Hamburg, Germany), Nayla Jimenez (Deutsches Elektronen-Synchrotron DESY, Notkestra{…

Post-compression of a Q-switched laser in a glass-rod multi-pass cell
Q-switched lasers are compact, cost-effective, and highly pulse energy-scalable sources for nanosecond-scale laser pulses. The technology has been developed for many decades and is widely used in scientific, industrial and medical applications. However, their inherently narrow bandwidth imposes a lower limit on pulse duration - typically in the few-hundred-picosecond range - limiting the applicability of Q-switched technology in fields that require ultrafast laser pulses in the few-picosecond o…

Real-Space Chemistry on Quantum Computers: A Fault-Tolerant Algorithm with Adaptive Grids and Transcorrelated Extension
C\'esar Feniou, Christopher Cherfan, Julien Zylberman, Baptiste Claudon, Jean-Philip Piquemal, Emmanuel Giner
https://arxiv.org/abs/2507.20583

Real-Space Chemistry on Quantum Computers: A Fault-Tolerant Algorithm with Adaptive Grids and Transcorrelated Extension
First-quantized, real-space formulations of quantum chemistry on quantum computers are appealing: qubit count scales logarithmically with spatial resolution, and Coulomb operators achieve quadratic instead of quartic computational scaling of two-electron interactions. However, existing schemes employ uniform discretizations, so the resolution required to capture electron-nuclear cusps in high-density regions oversamples low-density regions, wasting computational resources. We address this by de…