Tootfinder

Wafer-thin, stretchy and strong as steel: could ‘miracle’ material graphene finally transform our world?
The material, discovered in 2004, was meant to be revolutionary. But only now is the technology coming of age
https://www.theguardian.com/science/2024/a<…

This https://arxiv.org/abs/2304.14064 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Evolution from quantum anomalous Hall insulator to heavy-fermion semimetal in magic-angle twisted bilayer graphene
The ground states of twisted bilayer graphene (TBG) at chiral and flat-band limit with integer fillings are known from exact solutions, while their dynamical and thermodynamical properties are revealed by unbiased quantum Monte Carlo (QMC) simulations. However, to elucidate experimental observations of correlated metallic, insulating and superconducting states and their transitions, investigations on realistic, or non-chiral cases are vital. Here we employ momentum-space QMC method to investiga…

Social revolution, a how-to by @… (i know, it's NOT a how-to, fool), i loved reading this and was happy the campfire metaphor was not taken to a place i feared, the pissing on the embers before moving to the next campground:
"Social movements have an uphill battle. You’ve survived the initial repression, then you’ve survived the constant one-two punch of repression and recuperation. You’ve survived splintering by refusing to let the more radical elements within your movement be isolated and picked off. You’ve become a full-fledged revolution, combining mass social movements with militant actors who are redistributing property and defending the gains of the revolution.
The final recuperative force generally comes from within the revolutionary movement itself: authoritarianism. It’s Boromir grabbing the ring of power, it’s the Bolsheviks declaring themselves in charge of a pluralistic movement and killing everyone who disagrees with them.
The purpose of a social revolution is to redistribute power horizontally, but there will always be people who say “yes, and I should be given all of the power so that I can better redistribute it,” rather than continuing to work from the bottom-up model that built the revolution in the first place."
#revolution #anarchism

Synthesis and Structural Analysis of Multilayered Graphene via Microwave Atmospheric Pressure Plasma
Waqas Iqbal, Najeeb-ur-Rehman, Niaz Wali
https://arxiv.org/abs/2403.03813

Synthesis and Structural Analysis of Multilayered Graphene via Microwave Atmospheric Pressure Plasma
This study reports the successful synthesis of multilayered graphene sheets via microwave atmospheric pressure plasma. This innovative approach streamlines and expedites graphene production and other carbon nanostructures, eliminating the need for catalysts, solvents, or complex processing conditions. Ethanol is directly injected into a microwave-generated argon plasma plume, leading to the formation of graphene. Raman spectroscopy revealed characteristic peaks (2D, G, and D bands) confirming g…

Ultrafast Optical Control of Exciton Diffusion in WSe$_2$/Graphene Heterostructures Revealed by Heterodyne Transient Grating Spectroscopy
Lukas Rieland, Julian Wagner, Robin Bernhardt, Tianyi Wang, Omar Abdul-Aziz, Philipp Stein, Eva Arianna Aurelia Pogna, Stefano Dal Conte, Giulio Cerullo, Hamoon Hedayat, Paul H. M. van Loosdrecht
https://

Ultrafast Optical Control of Exciton Diffusion in WSe$_2$/Graphene Heterostructures Revealed by Heterodyne Transient Grating Spectroscopy
Using heterodyne transient grating spectroscopy, we observe a significant enhancement of exciton diffusion within a monolayer WSe$_2$ stacked on top of graphene. We further demonstrate that the diffusion dynamics can be optically tuned on the ultrafast time scale (i.e. a few picoseconds) by altering the photoexcited charge carrier density in graphene. The results reveal that, on a time scale of a few picoseconds, the effective diffusion constant in the WSe$_2$/graphene heterostructure is approx…

Thermal transport in a 2D amorphous material
Yuxi Wang, Xingxing Zhang, Wujuan Yan, Nianjie Liang, Haiyu He, Xinwei Tao, Ang Li, Fuwei Yang, Buxuan Li, Te-Huan Liu, Jia Zhu, Wu Zhou, Wei Wang, Lin Zhou, Bai Song
https://arxiv.org/abs/2402.13471

Thermal transport in a 2D amorphous material
Two-dimensional (2D) crystals proved revolutionary soon after graphene was discovered in 2004. However, 2D amorphous materials only became accessible in 2020 and remain largely unexplored. In particular, the thermophysical properties of amorphous materials are of great interest upon transition from 3D to 2D. Here, we probe thermal transport in 2D amorphous carbon. A cross-plane thermal conductivity ($κ$) down to 0.079 $\rm{Wm}^{-1}K^{-1}$ is measured for van der Waals stacked multilayers at ro…

This https://arxiv.org/abs/2402.13471 has been replaced.
initial toot: https://mastoxiv.page/@a…

Thermal transport in a 2D amorphous material
Two-dimensional (2D) crystals proved revolutionary soon after graphene was discovered in 2004. However, 2D amorphous materials only became accessible in 2020 and remain largely unexplored. In particular, the thermophysical properties of amorphous materials are of great interest upon transition from 3D to 2D. Here, we probe thermal transport in 2D amorphous carbon. A cross-plane thermal conductivity ($κ$) down to 0.079 $\rm{Wm}^{-1}K^{-1}$ is measured for van der Waals stacked multilayers at ro…

This https://arxiv.org/abs/2402.13471 has been replaced.
initial toot: https://mastoxiv.page/@a…

Thermal transport in a 2D amorphous material
Two-dimensional (2D) crystals proved revolutionary soon after graphene was discovered in 2004. However, 2D amorphous materials only became accessible in 2020 and remain largely unexplored. In particular, the thermophysical properties of amorphous materials are of great interest upon transition from 3D to 2D. Here, we probe thermal transport in 2D amorphous carbon. A cross-plane thermal conductivity ($κ$) down to 0.079 $\rm{Wm}^{-1}K^{-1}$ is measured for van der Waals stacked multilayers at ro…

This https://arxiv.org/abs/2307.11054 has been replaced.
initial toot: https://mastoxiv.page/@a…

Physical properties of an Aperiodic monotile: Graphene-like features, chirality and zero-modes
The discovery of the Hat, an aperiodic monotile, has revealed novel mathematical aspects of aperiodic tilings. However, the physics of particles propagating in such a setting remains unexplored. In this work we study spectral and transport properties of a tight-binding model defined on the Hat. We find that (i) the spectral function displays striking similarities to that of graphene, including six-fold symmetry and Dirac-like features; (ii) unlike graphene, the monotile spectral function is chi…