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Flexible Hybrid Integration Hall Angle Sensor Compatible with the CMOS Process

Overview
Journal Sensors (Basel)
Publisher MDPI
Specialty Biotechnology
Date 2025 Feb 13
PMID 39943565
Authors
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Abstract

Silicon-based Hall application-specific integrated circuit (ASIC) chips have become very successful, making them ideal for flexible electronic and sensor devices. In this study, we designed, simulated, and tested flexible hybrid integration angle sensors that can be made using complementary metal-oxide-semiconductor (CMOS) technology. These sensors are manufactured on a 100 µm-thick flexible polyimide (PI) membrane, which is suitable for large-scale production and has strong potential for industrial use. The Hall sensors have a sensitivity of 0.205 V/mT. Importantly, their sensitivity remains stable even after being bent to a minimum radius of 10 mm and after undergoing 100 bending cycles. The experiment shows that these flexible hybrid integration devices are promising as angle sensors.

References
1.
Yuan Y, Giri G, Ayzner A, Zoombelt A, Mannsfeld S, Chen J . Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method. Nat Commun. 2014; 5:3005. DOI: 10.1038/ncomms4005. View

2.
Yang H, Li S, Wu Y, Bao X, Xiang Z, Xie Y . Advances in Flexible Magnetosensitive Materials and Devices for Wearable Electronics. Adv Mater. 2024; 36(37):e2311996. DOI: 10.1002/adma.202311996. View

3.
Riem R, Raman J, Rombouts P . A 2 MS/s Full Bandwidth Hall System with Low Offset Enabled by Randomized Spinning. Sensors (Basel). 2022; 22(16). PMC: 9416114. DOI: 10.3390/s22166069. View

4.
Donolato M, Tollan C, Porro J, Berger A, Vavassori P . Flexible and stretchable polymers with embedded magnetic nanostructures. Adv Mater. 2012; 25(4):623-9. DOI: 10.1002/adma.201203072. View

5.
Hong W, Guo X, Zhang T, Mu S, Wu F, Yan Z . Flexible Strain Sensor Based on Nickel Microparticles/Carbon Black Microspheres/Polydimethylsiloxane Conductive Composites for Human Motion Detection. ACS Appl Mater Interfaces. 2024; 16(25):32702-32712. DOI: 10.1021/acsami.4c04830. View