Magnetoresistance and space Anders Persson ngstrm Space Technology
- Slides: 13
Magnetoresistance and space Anders Persson Ångström Space Technology Centre IRFU presentation A. Persson ver. 1. 0 16/5/11
Why magnetism and space? • • Jan Bergman Very common satellite instrument Attitude control Space plasma physics 0, 79 g 2 kg IRFU presentation A. Persson 2
Why small? • The Space Shuttle ~74 ton • A launch required – 2000 ton of fuel – 2. 9 billion SEK • A nanosatellite weighs <10 kg • A launch requires – 50 000 -100 000 SEK/kg – Piggy-back launches possible IRFU presentation A. Persson 3
How small? 87 nm 1 nm • 1 nm = 0, 00001 m • 1 atom ≈ 0, 1 -0, 2 nm IRFU presentation A. Persson 4
How small is small? • 1 µm = 1000 nm • Ø human hair ≈ 100 µm Kreussenglaskryssningsrobot IRFU presentation A. Persson 5
Isolation FIB Pattern the sensors ESCA How is it done? Contacts IRFU presentation A. Persson 6
Why is it difficult? • Patterning the sensors Redeposition Implantation IRFU presentation A. Persson 7
How did it go? • • Implantation – A study of the effects – Optimization of the process Redeposition – Stop the etch in the barrier – 5 -10 ggr more signal • Radiation – Equivalent to a Jupiter mission – No effects at all! IRFU presentation A. Persson 8
What’s next? • Vietnamese satellite F-1 • Weighs 1 kg • Launch during, 2012 IRFU presentation A. Persson 9
…and also 60 nm • Planar Hall effect senors • New type of sensor geometry • A complement at low frequencies IRFU presentation A. Persson 10
Promising performance Sensitivity Detection limit Scalability IRFU presentation A. Persson 11
The next generation • New optimized design • 100 p. THz-0. 5 @ 0. 1 Hz • 30 p. THz-0. 5 @ f>10 Hz IRFU presentation A. Persson 12
Tack! IRFU presentation A. Persson 13
