Fabrication of graphene-based sensor for exposure to different chemicals

Afzal, Usama; Amin, Muhammad Zahid; Arshad, Bilal; Afzal, Fatima; Maryam, Kanza; Zafar, Qayyum; Ahmad, Naveed; Ali, Nazakat; Firdous, Mashal

doi:10.1039/d2ra04776d

Cited by 1 publication

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“…So, the measurement of the humidity leads to the humidity detectors (Zhang et al , 2005; Kiasari et al , 2012). Different materials, especially organic semiconductors, have been used in the fabrication of hygrometers because of their remarkable electric and structural properties (Murtaza et al , 2010; Karimov et al , 2012; Afzal et al , 2022c). Nickel phthalocyanine (NiPc) is a well-known organic compound due to its hydrogenic properties.…”

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confidence: 99%

Use of highly sensitive nickel phthalocyanine based humidity sensor to explore the imprecise data analysis for robot body

Afzal,

Maryam,

Afzal

et al. 2023

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Purpose The purpose of this study is to fabricate a highly sensitive humidity sensor for observing the humidity effect on a robot’s body as an application of the Internet of Things. The sensor has been fabricated by depositing a thin sensing layer of nickel phthalocyanine (NiPc) between two silver electrodes. Design/methodology/approach The structure of the thin film was observed by X-ray diffraction, optical properties by UV Vis and surface morphology by scanning electron microscope. The capacitance and the resistance with respect to change in relative humidity from 0 to 100%RH have been measured by LCR meter at 1 kHz. Findings The sensor’s response time is 7.5 s and its recovery time is 3.7 s, with high sensitivity of 127,259 pF/%RH and 332.287 MΩ/%RH. The authors have also used a proposed sensor on a steel body and observed humidity values. The analysis of all measured values was performed through the classical and neutrosophic approaches. By comparing, the authors have observed that the neutrosophic approach is more efficient in analyzing the sensor data. Originality/value In this work, the authors will fabricate a capacitive and resistive-type humidity sensor using the thin film of NiPc. The structural, optical and morphological properties of NiPc thin film will be investigated with different characterization techniques. The electric properties, i.e. capacitance and resistance, will be measured at intervals with an LCR meter by changing relative humidity (%RH). Moreover, the measured data will be analyzed through different statistical approaches, as already used in [12].

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