Tootfinder

Enhanced intraband absorption in two-step photon upconversion solar cells with a double-tunnel-junction structure
Koichiro Matsuzawa, Shigeo Asahi, Takashi Kita
https://arxiv.org/abs/2509.04195

Enhanced intraband absorption in two-step photon upconversion solar cells with a double-tunnel-junction structure
Two-step photon upconversion solar cells (TPU-SCs) belong to the class of solar cells that in principle can exceed the Shockley--Queisser limit for single-junction solar cells. A TPU-SC basically consists of a wide-gap and a narrow-gap semiconductor layer, where intraband absorption of infrared (IR) photons by electrons accumulated at the conduction-band-edge discontinuity leads to an increase in the output current and voltage. This IR-induced upconversion process enables a better utilization o…

Passgenaue Dichtungsringe mit TPU drucken ist ja irgendwie auch ein Killerfeature von 3D-Druckern.
Hab am Wochenende vier verschiedene Ringe gedruckt und damit einer Wasserpumpe komplett dicht bekommen, was sie nichtmal nach dem Kauf war. Unser Regenwasserbehälter bekommt als nächstes noch eine, da dieser am Auslass auch Wasser verliert.
Und es gibt Modelle für allerlei hilfreichen flexiblen Krimskrams im Haushalt, der sonst einige € kostet.

Towards Employing FPGA and ASIP Acceleration to Enable Onboard AI/ML in Space Applications
Vasileios Leon, George Lentaris, Dimitrios Soudris, Simon Vellas, Mathieu Bernou
https://arxiv.org/abs/2506.12970

Towards Employing FPGA and ASIP Acceleration to Enable Onboard AI/ML in Space Applications
The success of AI/ML in terrestrial applications and the commercialization of space are now paving the way for the advent of AI/ML in satellites. However, the limited processing power of classical onboard processors drives the community towards extending the use of FPGAs in space with both rad-hard and Commercial-Off-The-Shelf devices. The increased performance of FPGAs can be complemented with VPU or TPU ASIP co-processors to further facilitate high-level AI development and in-flight reconfigu…