AI Article Synopsis
- When GM-APDs are used in space, they can get damaged by radiation, which makes them count more false signals (dark counts).
- Scientists found that heating them up (thermal annealing) can help fix some of the damage, and they did this using built-in coolers on the devices.
- They discovered that heating them up in short 10-minute bursts was really effective and that this method did much better than just room temperature annealing.
Article Abstract
When operating in space, on-board Silicon Geiger-Mode Avalanche Photodiodes (GM-APDs) are exposed to radiation damage that result in an increase in dark count rates. Thermal annealing has been found to mitigate the damage, although prior studies have largely focused on annealing following a single session of proton irradiation. This work reports that thermal annealing can be performed simply with the built-in thermo-electric coolers of the GM-APDs. Annealing was also done in 10 min intervals for a clearer view of the recovery curve. Mitigation of damage from repeated radiation was observed from the: (1) halving of the increase in dark count rates on average and (2) outperformance of room temperature annealing ( C) by 33 . Additionally, we show that heavy doses of radiation (21 krad) have a probability of causing Random Telegraph Signals in GM-APDs that can be suppressed by lowering the operating temperature.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11458804 | PMC |
| http://dx.doi.org/10.1038/s41598-024-72535-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Copper Oxidation-Induced Nanoscale Deformation of Electromechanical, Laminate Polymer/Graphene Thin Films during Thermal Annealing: Implications for Flexible, Transparent, and Conductive Electrodes.
ACS Appl Nano Mater
December 2024
Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States.
The transfer of large-area, continuous, chemical vapor deposition (CVD)-grown graphene without introducing defects remains a challenge for fabricating graphene-based electronics. Polymer thin films are commonly used as supports for transferring graphene, but they typically require thermal annealing before transfer. However, little work has been done to thoroughly investigate how thermal annealing affects the polymer/graphene thin film when directly annealed on the growth substrate.
View Article and Find Full Text PDFPersistent Toughness and Heat Triggered Plasticization in Polylactide Modified with Poly(ethylene oxide)--poly(butylene oxide).
ACS Macro Lett
January 2025
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Poly(lactide) (PLA) is a promising biodegradable polymer with potential applications in single-use packaging. However, its use is limited by brittleness, and its biodegradability is restricted to industrial compost conditions due in part to an elevated glass transition temperature (). We previously showed that addition of a poly(ethylene-oxide)--poly(butylene oxide) diblock copolymer (PEO-PBO) forms macrophase-separated rubbery domains in PLA that can impart significant toughness at only 5 wt %.
View Article and Find Full Text PDFCoO/CeO@C nanopetals derived Cobalt-Cerium Prussian blue with enhanced Dual-Enzyme mimetic activity for detection of ascorbic acid in rat brain during calm/ischemic processes.
Talanta
December 2024
Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, PR China.
In this study, we demonstrate that a highly efficient colorimetric sensor prepared from carbon-shielded Co-Ce Prussian blue analog (PBA) nanopetals (CoO/CeO@C) by green chemical deposition method and thermal annealing processes for detection of ascorbic acid (AA) in cerebral microdialysis fluids. The synthesized CoO/CeO@C showed high dual-mimetic activity, i.e.
View Article and Find Full Text PDFCross-alignment of silver nanowires network for efficient nanowelding.
Nanotechnology
December 2024
Taiyuan University of Technology, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China, Taiyuan, Shanxi , 030024, CHINA.
The performance of sliver nanowire (AgNWs) network flexible transparent electrodes is limited by large contact resistance, making it necessary to perform nanowelding to improve conductivity of the network. However, not all nanowire junctions can be welded. Our work indicates that the welding kinetics between nanowires depend on the crossing angle, with higher surface diffusion velocity prone to welding and fracture at nanowire junctions of crossing angles close to 90 degrees.
View Article and Find Full Text PDFStructural Repair of Reduced Graphene Oxide Promoted by Single-Layer Graphene.
Adv Sci (Weinh)
December 2024
Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China.
High-temperature graphitization of graphene oxide (GO) is a crucial step for enhancing interlayer stacking and repairing the in-plane defects of reduced graphene oxide (rGO) films. However, the fine control of the structural repair and reducing the energy consumption in thermal treatment remain challenges. In this study, ab-initio molecular dynamics simulations combined with experiments are used to investigate the structural evolution of rGO upon thermal annealing, with or without the presence of single-layer graphene (SLG).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!