Tootfinder

Singapore's Temasek cuts back on startup investments after the fund wrote down hundreds of millions of dollars on a spate of collapsed startups, including FTX (Financial Times)
https://www.ft.com/content/54594076-eea5-4c0d-946c-e05ba7038d3e

Singapore’s Temasek cuts back on start-up investments
State-owned $300bn fund says it is adopting a ‘more cautious approach’ on early-stage companies

@… Oui, je suis largement d’accord. Et les entreprises vont très tôt hausser les prix, donc les compétences culturelles seules ne suffiront bientôt plus…
Mais je crains quand même l’arrivée en force de cette génération Š l’uni.

@… Oui, je suis largement d’accord. Et les entreprises vont très tôt hausser les prix, donc les compétences culturelles seules ne suffiront bientôt plus…
Mais je crains quand même l’arrivée en force de cette génération Š l’uni.

(1/4) “When the day of Pentecost had come, they were all together in 1 place. And suddenly from heaven there came a sound like the rush of a violent wind, & it filled the entire house where they were sitting. Divided tongues, as of fire, appeared among them, & a tongue rested on each of them. All of them were filled with the Holy Spirit & began to speak in other languages, as the Spirit gave them ability. Now there were devout Jews from every nation under heaven living in Jerusal…

Investigating MAXI J1752$-$457 with NuSTAR in the aftermath of a superburst
Sean N. Pike, Hitoshi Negoro, Douglas Buisson, Benjamin Coughenour, Julian Gerber, Aarran W. Shaw, Mutsumi Sugizaki, John A. Tomsick
https://arxiv.org/abs/2506.05677

Investigating MAXI J1752$-$457 with NuSTAR in the aftermath of a superburst
We present two NuSTAR observations of the X-ray transient, MAXI J1752$-$457, following a superburst which was observed by MAXI/GSC in November, 2024. NuSTAR follow-up confirmed that MAXI J1752$-$457 is coincident with the previously observed Einstein Probe source, EP240809a. We performed a spectral analysis of the source during both NuSTAR observations, and we confirm that the hard X-ray spectra are consistent with the inclusion of a spherical blackbody component. At about 79 hours after the on…

Tunability of Robust Exciton-Trion Polaritons in Atomically Thin WS2 Monolayers
Xuguang Cao, Debao Zhang, Ji Zhou, Wanggui Ye, Changcheng Zheng, Kenji Watanabe, Takashi Taniguchi, Jiqiang Ning, Shijie Xu
https://arxiv.org/abs/2506.07030

Tunability of Robust Exciton-Trion Polaritons in Atomically Thin WS2 Monolayers
Herein, we present an experimental demonstration of the robust exciton-trion polaritons (ETPs) by measuring and simulating the resonance reflectance spectra of various configurational WS2 monolayers with different dielectric screenings. Moreover, the oscillator strength and decoherent behavior of such hybrid ETPs can be tuned via utilizing dielectric screening effect. The effect is attributed to the regulation of the Coulomb coupling between excitons and trions by changing the surrounding diele…

Twist-Angle-Controlled Anomalous Gating in Bilayer Graphene/BN Heterostructures
G. Maffione, L. S. Farrar, M. Kapfer, K. Watanabe, T. Taniguchi, H. Aubin, D. Mailly, R. Ribeiro-Palau
https://arxiv.org/abs/2506.05548

Twist-Angle-Controlled Anomalous Gating in Bilayer Graphene/BN Heterostructures
Anomalous gating effects-such as gate ineffectiveness and pronounced hysteresis-have been observed in graphene-based systems encapsulated in boron nitride (BN) and linked to a possible ferroelectric state. However, their origin, stability, and reproducibility remain under debate. Here, we present charge transport experiments in dual-gated, dynamically rotatable van der Waals heterostructures based on bilayer graphene encapsulated in BN. Remarkably, the angular degree of freedom acts as an ON/OF…

Polarized electroluminescence with magnetic spectral tuning in van der Waals magnet CrSBr
Yilei Wang, Shiqi Yang, Leyan Huang, Yuqia Ran, Pingfan Gu, Xinyue Huang, Kenji Watanabe, Takashi Taniguchi, Zuxin Chen, Yu Ye
https://arxiv.org/abs/2506.06734

Polarized electroluminescence with magnetic spectral tuning in van der Waals magnet CrSBr
Polarized wavelength-tunable electroluminescence (EL) represents a critical on-demand functionality for next-generation optoelectronics. While conventional van der Waals (vdW) EL devices offer discrete wavelength switching constrained by fixed emission states, we report a novel platform enabling continuous spectral tuning combined with intrinsically polarized emission. By leveraging exciton-assisted inelastic tunneling in the anisotropic magnet CrSBr, our devices achieve uniform EL with a near …

Optical Injection and Detection of Long-Lived Interlayer Excitons in van der Waals Heterostructures
Alperen T\"u\u{g}en, Anna M. Seiler, Kenji Watanabe, Takashi Taniguchi, Martin Kroner, Ata\c{c} \.Imamo\u{g}lu
https://arxiv.org/abs/2506.06098

Optical Injection and Detection of Long-Lived Interlayer Excitons in van der Waals Heterostructures
Interlayer excitons in semiconducting bilayers separated by insulating hBN layers constitute a promising platform for investigation of strongly correlated bosonic phases. Here, we report an optical method for the generation and characterization of long-lived interlayer excitons. We find confirmation of tightly bound interlayer excitons by measuring 1s and 2s intralayer excitons in each layer concurrently. Using a pump-probe technique, we find interlayer exciton lifetimes up to 8.8 $μ$s, increa…

Cavity-mediated exciton hopping in a dielectrically engineered polariton system
Lukas Husel, Farsane Tabataba-Vakili, Johannes Scherzer, Lukas Krelle, Ismail Bilgin, Samarth Vadia, Kenji Watanabe, Takashi Taniguchi, Iacopo Carusotto, Alexander H\"ogele
https://arxiv.org/abs/2506.05561…

Cavity-mediated exciton hopping in a dielectrically engineered polariton system
Exciton-polaritons - coherently hybridized states of excitons and photons - are instrumental for solid-state nonlinear optics and quantum simulations. To enable engineered polariton energy landscapes and interactions, local control over the particle-like states can be achieved by tuning the properties of the exciton constituent. Monolayer transition metal dichalcogenides stand out in this respect, as they readily allow for a deterministic, flexible and scalable control of excitons, and thus of …