Bio-compatible organic humidity sensor based on natural inner egg shell membrane with multilayer crosslinked fiber structure

Abstract

In this paper, we propose a novel bio-compatible organic humidity sensor based on natural inner egg shell membrane (IESM) with multilayer cross linked fiber structure that can be used as a substrate as well as a sensing active layer. To fabricate the proposed sensors, two different size inter digital electrodes (IDEs) with 10 mm × 4 mm for sensor 1 and 12 mm × 6 mm for sensor 2 are printed on the surface of the IESM through Fujifilm Dimatix DMP 3000 inkjet material printing setup, which have finger width of 100 μm and space of 100 μm. The fabricated sensors stably operates in a relative humidity (RH) range between 0% RH to 90% RH, and its output impedance and capacitance response are recorded at 1 kHz and 10 kHz. The response time (T res ) and recovery time (T rec ) of sensor 1 are detected as ~1.99 sec and ~8.76 sec, respectively and the T res and T rec of sensor 2 are recorded as ~2.32 sec and ~9.21 sec, respectively. As the IESM for the humidity sensor, the natural materials can be implemented in our daily life as they open a new gate way for bio-compatible devices.

Inner egg shell membrane based bio-compatible capacitive and piezoelectric function dominant self-powered pressure sensor array for smart electronic applications

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Printable Highly Stable and Superfast Humidity Sensor Based on Two Dimensional Molybdenum Diselenide

“…The graphene and ZnO composite sensor 53 is targeted as a wide range from 0 to 85% RH, but presented a mismatch in response and recovery times. In Table 1, the bio-compatible research works 54,55 have the advantage of wide application range, but they have a large difference in response and recovery times of approximately 11 and 4 times, respectively. A big difference in response time requires a complex control structure and restrict its usage for real time applications.…”

High-Performance Humidity Sensor Based on the Graphene Flower/Zinc Oxide Composite

“…Presently, researchers are primarily focused on improving the characteristics of the functional material in humidity sensors by experimenting with various advanced materials and composites of existing materials and, therefore, several types of materials, including ceramics, polymers, biowastes, metal oxides, 2D materials, and their composites have been employed in humidity sensors [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Primarily, metal oxides such as ZnO, SnO 2 , Fe 2 O 3 , CuO, and TiO 2 have been engaged in humidity sensing applications due to their unique electrochemical and electronic properties [ 15 , 16 , 17 , 18 ].…”