Touchless Optical Finger Motion Tracking Based on 2D Nanosheets with Giant 
Moisture Responsiveness

Szendrei, K.; Ganter, P.; Sánchez-Sobrado, O.; Eger, R.; Kuhn, A.; Lotsch, B. V.

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Touchless Optical Finger Motion Tracking Based on 2D Nanosheets with Giant Moisture Responsiveness

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Eger, R.
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Lotsch, B. V.
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Szendrei, K., Ganter, P., Sánchez-Sobrado, O., Eger, R., Kuhn, A., & Lotsch, B. V. (2015). Touchless Optical Finger Motion Tracking Based on 2D Nanosheets with Giant Moisture Responsiveness. Advanced Materials, 27(41), 6341-6348.

Cite as: https://hdl.handle.net/21.11116/0000-000E-CA8A-3

Abstract

A new optical touchless positioning interface based on ultrasensitive humidity responsive 1D photonic crystals utilizing the giant moisture dependent swelling capacity of 2D phosphatoantimonate nano sheets is presented. The spatially confined, full spectral color change combined with reversible transparency switching induced by the humidity sheath of a human finger allows for real time, true color lateral finger motion tracking under touchless conditions.